Fibro-optical connector with thermoplastic glue and formfactor

FIELD: physics.

SUBSTANCE: fibro-optical connector arranged on optical fiber end has casing to be connected to LC socket and cartridge assembly comprising sleeve and ring. Cartridge assembly is filled with thermoplastic semi-crystalline glue. Thermoplastic material can be made on the base of polyamide with high melting temperature. Fibro-optical connector can comprise optical fiber fitted in cartridge with the help of said thermoplastic material. Position of said optical finer in said cartridge by heating and subsequent cooling.

EFFECT: fibro-optical connected can be easily fitted in-situ during short time intervals.

6 cl, 6 dwg

 

The technical field to which this invention

The present invention relates to fiber optic connectors.

Prototypes

Mechanical fiber optic connectors are used in communication systems. In recent years, widespread fiber-optic connectors with a small form factor (SFF). For example, in U.S. patent No. 5481634, 5719977, and 6318903 described fiber optic connectors LC type ("Lucent Connectors"). These fiber optic connectors are used to connect sections of fiber-optic cable and for connecting fiber optic cable to the active and passive components. The form factor of the LC connector is approximately 50% lower than other fiber optic connectors, such as ST, FC and SC.

However, commercially available connector type LC is not very well suited for installation in the field. Conventional adhesives include adhesives hot curing, anaerobic adhesives, the adhesives, the curing of which is performed by using ultraviolet radiation, as well as two-component epoxy and acrylic resins. For example, in the LC type connectors for holding the optical fiber in the ferrule of the connector is typically used epoxy (two part epoxy adhesives). For curing such adhesive materials required n is GREVENA for 10-15 minutes. After complete curing of the adhesive material of the optical fiber cannot be removed from the holder connector without destroying the optical fiber, which makes reinstalling the optical fiber in the ferrule impractical.

BRIEF description of the INVENTION

In accordance with the basic implementation of the present invention a fiber optic connector to a fiber optic cable includes a housing for attachment to the socket LC. The body of the connector is made of a polymeric material that does not deform when exposed to temperatures of at least 210°C. Fiber optic connector includes a host cage. Site holder includes a sleeve and ring. The host cage filled thermoplastic adhesive. thermoplastic material may be an adhesive material based on polyamide resins having a high melting point.

In accordance with another variant of realization of the present invention a fiber optic connector to a fiber optic cable includes a case made of a polymer material that does not deform when exposed to temperatures of at least 210°C. Fiber optic connector includes a host cage. Site holder includes a sleeve and ring. The host cage filled with adhesive, and having a high te is the temperature of melting.

In the above brief description of the invention not described all illustrated examples of implementation of the present invention. These examples of implementation of the present invention is described in more detail in the detailed description of the invention with reference to the following drawings.

BRIEF DESCRIPTION of DRAWINGS

The present invention will be described with reference to the following drawings:

Figure 1 shows a perspective image with a spatial separation of the parts of the connector type LC;

On figa and 2B shows the variations of the knot design ring-ring-sleeve, filled with the adhesive material.

Figure 3 shows a perspective image with a spatial separation of the parts of the connector type LC installed in the adapter to fill the connector with glue before the connection of the optical cable in the field.

Figure 4 shows a conventional connector type SC.

Figure 5 illustrates a typical connector type FC.

Because the invention may include various modifications and various forms, it will be described in detail with examples of possible implementations of the invention with reference to the drawings. However, it should be understood that the examples of implementation of the invention does not limit the scope of the present invention. On the contrary, these examples of implementation of this invention uses the tsya, to include all modifications and alternatives within the scope of the present invention, as described in the following claims.

DETAILED DESCRIPTION of EXAMPLES of IMPLEMENTATION of the INVENTION

The present invention relates to fiber-optic connector with a small form factor, suited for use with thermoplastic adhesives, and more specifically, a thermoplastic adhesive materials having a very high melting point, which are used for fixing the optical fiber, and insert the tip of the connector.

In accordance with an example implementation of the present invention a fiber optic connector to a fiber optic cable having a small form factor, or fiber-optic connector type LC, which is pre-filled thermoplastic adhesive. Fiber optic connectors using a thermoplastic adhesive material, very easy to install in the field. Used in connectors thermoplastic adhesive materials may include thermoplastic resin, for example, described in U.S. patent No. 4984865. In addition, used in the connector of thermoplastic adhesive may be a thermoplastic adhesive material having a very high melting point and is olitorius hard technical requirements Telcordia GR-326. In one embodiment of the invention provides reduced time of installation of the connector in the field. In another embodiment of the invention fiber optic connectors with a large value of the form factor may include a thermoplastic adhesive material having a very high melting point, and can be used at higher ambient temperatures.

Figure 1 shows a perspective image with a spatial separation of the components of the fiber optic connector 10. The connector 10 includes a housing 30 having a locking lever 32 and the axial or Central bore in which is inserted a node of the shroud 11. The housing 30 and the locking lever 32 are of the form, which allows you to insert the body of the connector into the socket LC type.

In accordance with an example implementation of the present invention the housing of the fiber optic connector 30 are molded or cast from a high temperature material, for example high-temperature polymeric material (plastic). High temperature polymeric material capable of withstanding temperatures up to 190°C. In the present example implementations of the present invention a high-temperature polymeric material capable of withstanding temperatures not lower than 210°C., and preferably in the range of from 210 to 270°C without the modify dimensions of the housing. Deformation of the connector housing may make it impossible to connect the connector to another connector or to other parts of the equipment. For example, can be used such high-temperature material, such as Ultem® XH 6050M manufactured by General Electric company, new York.

The connector 10 also includes the site of the shroud 14, the ring 12 and the sleeve 16. The ring 12 can be used as a flange to provide a stop for the spring 20 to the host chargers have a definite position in the housing 30. The yoke 14, which is used to hold therein the optical fiber may be made of ceramics, glass, plastic or metal. A more detailed description of the bushing 16 is presented below.

Optical fiber (not shown) may be inserted through the sleeve 16 so that the end of the optical fiber is a little out of 14, or is located in one plane with the end face of the holder 14. As will be described in detail below, in this example implementation of the present invention before connection of an optical fiber, the ferrule can be entered adhesive material with a high or very high melting temperature to complete the connection of optical fibers in the field or for other applications. After heating the connector on the installation location, the operator can insert the optical the fiber in the desired position. After stopping the heating of the optical fiber connector quickly (no more than 2 minutes) is fixed inside the casing. If you want to change the position of the optical fiber in the connector, the connector must be re-heated.

The connector 10 may also include an insert or body of the connector 25 for holding node of the shroud 11 and the spring in the housing of the connector 30. The body of the connector can move relative to the host cage and can be fixed with the outer casing of the connector 30. The crimp ring 40 provides additional support in the axial direction, and removing the mechanical stresses applied to the fiber-optic cable or to the sheath of the optical fiber. Can also be used sleeve 45 to prevent losses associated with bending fiber-optic cable.

On figa and 2B shows the various options for the design of the Assembly holder 11. In the shown figa is elongated sleeve 16' (length from 0.25 to 0.65 inches (from 6.2 to 15.1 mm)). The sleeve 16' is filled thermoplastic adhesive 50, which is located within the sleeve and within the shroud 14. As will be described in detail below, thermoplastic adhesive is heated to the melting temperature. The filling of thermoplastic adhesive runs through the end of the sleeve 55 by means of system introduction to the nl. An elongated sleeve 16' may be made of a material with high thermal conductivity, such as metal or a high temperature polymer. The use of an elongated sleeve 16' simplifies the process connection, and an elongated sleeve can withstand higher temperatures, when performing heat host the chargers on the installation location for insertion into the ferrule of the optical fiber fixing an optical fiber and communication. The sleeve 16' may be pressed on the ring, cage or can connect with a thread. In addition, the sleeve 16' and the ring 12 may be a single item, made by means of injection molding. In addition, a single item ring-sleeve may be machined from a suitable metal.

In the construction shown in figv, the sleeve consists of two parts, a short part 15 and the elongated end 17. A short portion of the sleeve 15 may be made of a material with high thermal conductivity, for example of metal or of a high temperature polymer, and may have a smaller length than the elongated sleeve 16'. Extended end 17 may be rigid or flexible. For example, on the short side of the sleeve 15 may be sealed tube made of a high temperature polymer such as a fluorocarbon resin, or of metal. The filling sleeve and clip thermoplas the ranks adhesive 50 can be performed through the end of the sleeve 55.

As mentioned above, the fiber optic connector type LC pre-filled thermoplastic adhesive. Filling glue is carried out by heating the glue with a high melting point and the correct amount of glue (from 0,000157 to 0,00024 cube inch (0,0026 to 0,0039 CC)) in the host cage. Usually the connector is introduced a quantity of molten adhesive to a small amount of glue out of the end of the clip. Then the hot melted adhesive material is cooled (for example, the node of the shroud is removed from the furnace), and the glue hardens. To connect the optical fibers in the field of fiber-optic connector type LC can be heated via an adapter for filling an adhesive material, for example via an adapter for filling an adhesive material 75, shown in figure 3. Adapter for charging the adhesive material is made of a material with high thermal conductivity. In this example implementation of the present invention in a fiber-optical connector type LC (10) seasoned a sufficient amount of thermoplastic adhesive, such as adhesive based on polyamide resins having a high melting point, or described here, the adhesive material with a very high melting point. Then filled with glue the adapter 75 is placed in a small furnace, the construction of which is well coordinated with the installation of adapter for the introduction of adhesive material. When oven is heated, heat is transferred through the adapter for the introduction of adhesive material on the yoke and sleeve connector LC. After reaching a certain temperature glue quickly melted or softened (approximately 60 seconds). After that, the optical fiber can be inserted into the sleeve of the connector 10. The optical fiber is inserted in the connector so that the end of the optical fiber is in one plane with the end face of the holder or extends beyond the end of the clip. After the optical fiber is inserted in the connector to the desired depth, the heating is terminated, the glue hardens, and the optical fiber is fixed in the connector. After that, the end surface of the optical fiber and the shell are polished to remove excess cured adhesive material.

In another example implementation of this invention, the adhesive material having a high melting point, or described here, the adhesive material with a very high melting temperature can be entered in other types of connectors for stranded fiber optic cables, for example in the connectors of type MU or MT.

Below is a description of a thermoplastic adhesive materials that are used in the examples considered, the implementation of this invention.

For example, in U.S. patent No. 4 984 865 op is Sana'a adhesive materials with high melting temperature. These adhesive materials with a high melting point can be used in the temperature range from 0 to 60°C, which complies with the requirements of the standard components of fiber optic cables TIA/EIA 568-B.3 used inside buildings (campuses and residential areas). Such adhesive materials soften at temperatures above 65°C, and upon reaching such temperatures may be entered optical fiber.

In other examples of implementation of the present invention can be used bonding materials having a higher melting temperature (adhesive materials with very high melting temperature). For use over a wide temperature range, for example in Central offices, or units located outdoors, the adhesive material should have a working temperature range from -40 to +85°C, in order to meet the requirements of standards Telcordia GR-326-CORE and GR-1435-CORE. It is believed that the adhesive material should have a glass transition temperature ("Tg")greater than the upper limit of the temperature range (epoxy glue). In addition, in practice it is proved that if Tg is within the range of working temperatures, it can lead to the disturbance of the optical characteristics of the connection due to nonlinear changes in the physical characteristics of the adhesive material and current is the input of an adhesive material, that can lead to the displacement of the optical fiber in the connector. However, when performing the following test samples was not observed such displacement of the optical fiber in the connector with sufficient creep resistance of these materials.

Examples of implementation of the present invention illustrate the use of fiber-optic connectors with a very high melting point, which can be used in various applications due to their high heat resistance and moisture resistance. This allows fast and easy connection of fiber-optic cables used outdoors. Adhesive materials with very high melting temperature can be used in fiber-optic connector type LC, as shown in figure 1. According to other variants of implementation of the present invention the adhesive materials with very high melting temperature can be used in fiber optic connectors, with a higher form factors, such as fiber-optic connector type SC (80) and FC (90) (shown respectively in figure 4 and 5), and fiber optic connectors ST type.

Adhesive materials with very high melting point may include polyamides and polyesters having a semicrystalline properties. For example, the R, adhesive materials with very high melting temperature can be selected from materials such as polyamide resin, Macromelt® (TPX-12-692, 6300, TPX-16-346 or TPX-16-192 manufactured by Henkel), or other similar polyamides (PA) production company Loctite or Hystol, polyetherimides or simple polyesters, including polyethylene terephthalate (PET), polybutylene terephthalate (RHT), or their copolymers (Dynapol S341 or Dynapol S341HV (RHT) production company Creanova or Vitel 4255 (RHT) production company Bostik). Physical properties of some adhesive materials with very high melting temperature are shown in table 1, where for comparison also presents the physical properties of adhesive materials with high melting temperature, such as those described in U.S. patent No. 4984865.

As can be seen from table 1, the adhesive materials with very high melting temperature is not limited to polyamides. These adhesive materials with very high melting point must have the following properties:

a) the viscosity in the molten state in the range of 1000-20000 CP in the temperature range from 210 to 250°C);

b) a shore hardness in the range of 50-85 at room temperature;

C) the content of crystalline phase in the adhesive material in the range of 15-35% to ensure stability of the adhesive material is a fiber-optic connectors;

g) the value of young's modulus not less than 1×107pounds per square inch in the temperature range fiber optic connector;

and

d) good polishing characteristics to ensure less smearing of the adhesive material and more precise control of the profile of the optical fiber/ferrule.

The shore hardness of the above materials greater than the shore hardness of the adhesive materials with high melting temperature based on polyamides and exceeds 60. For example, the shore hardness of the above adhesive materials with very high melting temperature is in the range from 50 to 57. In addition, used in the examples of implementation of the present invention the adhesive materials with very high melting temperature can be used in a wide range of operating temperatures, which greatly expands the range of their applications.

In accordance with one example implementation of the present invention the adhesive material with a very high melting point may be semi-crystalline structure and a glass transition temperature Tg within the range of operating temperatures. In addition to the appropriate thermal characteristics of adhesive materials with very high melting point used in the examples of implementation of the present invention can have improved characteristics polerowanie is compared with other adhesives, having a high melting point.

In addition, adhesive materials with very high melting point used in the examples of implementation of the present invention, can have very low levels of creep resistance. As a result of this requirement the amount of protrusion of the optical fiber beyond the end face of the connector can be reduced, allowing the use of more coarse polishing. For example, the amount of protrusion of the optical fiber beyond the end face of the connector for adhesive materials with a lower value of the melting temperature is in the range from 0.5 to 1.5 μm, which provides a relatively good optical contact. This range of protrusion of the optical fiber beyond the end face of the connector reduces the amount of polishing performed in the field. After the bead of molten material will be removed from the end of the connector may be depth during polishing.

The use of adhesive materials with very high melting temperature simplifies the process of polishing. For example, adhesive materials with very high melting point used in the examples of implementation of the present invention, the range of the protrusion of the optical fiber beyond the end face of the connector may be the same as for dragging the NGO-optic connectors, using adhesives based on epoxy resin (from +50 nm to -125 nm), as described in the standard Telcordia GR-326 (and THAT the connectors IEC). This protrusion of the optical fiber is actually "co-planar" (-125 nm is small embedding optical fibers) forming a spherical surface on the end face of the ceramic holder. As a result, the end face of the ceramic cage plays the role of a limiter when performing polishing. When using a suitable polishing material, such as lapping film SiO220 nm or fine lapping film of aluminum oxide, can be done a large number of moves polishing to remove scratches without exceeding the maximum penetration of optical fiber is equal to 125 nm. In addition, adhesive materials with very high melting temperature (after solidification) are quite solid materials, which can quickly be removed with polishing without chipping and peeling.

Thus, using an adhesive material with a very high melting point in a fiber optic connector with a small form factor simplifies the process of polishing and provides a more rapid removal of adhesive material (compared to conventional epoxy adhesives) in the field. Currently used hair is Onno-optic connectors with a small form factor, with ceramic ferrule, such as, for example, connector type LC or MU, have flat ends of small diameter (from 0.7 to 0.9 mm), arranged perpendicularly to the axis of the clip connector. In the polishing process using lapping film with the size of the abrasive from gross to subtle, which apply in the case of adhesive materials (solid) epoxy resin, the surface acquires a spherical shape, and the optical fiber protrudes from the end of the clip. When performing polishing in accordance with the requirements of the standard Telcordia GR-326 (and technical specifications for connectors IEC) difficult to control manually the position of the vertex (maximum 50 μm) using a conventional mandrel for polishing in the field. In addition, the radius of curvature of the polished end of the optical fiber can be less than 7 mm (minimum radius of curvature of the standard Telcordia GR-326 and specifications for connectors IEC) due to the fact that the protrusion of the conventional cartridge mandrel for polishing is too large, resulting in an end surface with a radius of curvature less than 3 mm, and the protrusion of the extreme points more than 80 μm.

In fiber optic connectors using adhesive materials with very high melting temperature can be used and other methods of polishing. For example, adhesive material with very high is some melting temperature can be removed in a single step process 2 μm Al 2O3Multimode or in a two step process SM using in the second step, the lapping film SiO220 nm. Ceramic ferrule may be pre-treated at the factory with the desired radius of curvature in the range of 8-15 mm offset vertices equal to 30 μm. Can be used for precise polishing mandrel, which is controlled by the protrusion of the clip from the bottom of the mandrel, which allows to obtain when performing polishing in the field of the desired radius of curvature and the protrusion of the top polished surface.

EXAMPLES AND TESTS

In the first test for determining operating characteristics of adhesive materials were prepared samples of adhesive materials with very high melting temperature (adhesive materials Dynapol). To verify the operating characteristics of adhesive materials with very high melting temperature Dynapol when used in the working conditions were made the following samples of fiber-optic cables: a few strands of multimode fiber-optic cables Siecor 62,5 (length 6 m) were prepared by Stripping the length of 1.25 inches to open the optical fiber made of Kevlar. The optical fiber of Kevlar were separated from each other to open the optical fiber covered with the buffer layer. The buffer layer would is removed from the optical fiber at a length of about 1.125, to open the glass optical fiber. The optical fiber was cleaned by wiping with a cloth moistened with isopropyl alcohol. After that, the optical fiber of Kevlar were truncated to the length of 0.25 inches and is evenly distributed around the buffer.

Filled with the adhesive material ST connector was placed in the oven (production company Kitco, located in stuitje, USA) and was heated to a temperature of about 265°C, which was melt adhesive material. Then released from the sheath of the optical fiber was inserted into the hole in the ceramic ferrule so that the end of the optical fiber protrudes from the end face of the holder, and the optical fiber of Kevlar and the sheath of the optical fiber included in the body of the connector and to come into contact with an adhesive material. Ball high temperature adhesive material on the end connector provides a lateral stop for the optical fibers during the cutting of the optical fiber. After that, the optical fiber was polished using a lapping film of aluminum oxide with the size of the abrasive particles of 2 μm (manufactured by 3M company, No. 60-6500-2346-2) at a certain length. After this was done polishing so that the end face of the optical fiber was in the same plane with the end face of the shroud. Polishing can also be performed so that the end of the opt is ical fiber protrudes from the end of the clip is approximately 1.5 μm. To determine the magnitude of the rearward end of the optical fiber after performing the polishing can be used interferometer (production company Direct Optical Research Corporation - DKORC ZX-1 Mini PMS).

Adhesive materials with very high melting temperature can be polished well as the temperature of local heating of the adhesive material with a very high melting temperature during the polishing process does not exceed the melting point of the adhesive material.

In the first test of the polishing was performed co-planar polishing using SC connector, filled with an adhesive material with a very high melting temperature, which was used in example implementations of the present invention. Table 2 presents the test results obtained on samples with coplanar polishing adhesive materials with very high melting temperature (the number of samples successfully passed the test/number of tested samples).

TABLE 2
Thermal cycleRelative humidityStepped heating
-10-+60°C -40-+80°C40°C/95% 4 days75°C/95% 4 days60-l20°C
Dynapol S3945/55/55/55/54/5
Dynapol S3615/55/55/55/55/5

These samples were subjected to the following test: thermal cycle-10-+60°C, holding for 4 days at a relative humidity of 95% and a temperature of 40°C, thermal cycle-10-+60°C, holding for 4 days at a relative humidity of 95% and a temperature of 75°C, and finally stepped heating of 60-120°C. Climatic tests, the results of which are presented in table 2, were performed sequentially on the same connectors. As follows from table 2, all samples were exposed to thermal cycles and humidity, successfully tested, which meets the requirements of TIA/EIA 568-B.3, Telcordia GR-326 and even exceeded the requirements of GR-326, since the tests were performed at temperatures up to 120°C.

In the second test of the standard polishing tool for polishing connector type LC, which usually helps to make boime 0.8 mm, was modified so that the mandrel could be only 0.3 mm Polishing was performed using the polishing pad 70 Dur (stand A)made of elastomer, which is located under lapping film. The radius of curvature of the polished surface of the tested images were maintained at a level of from 7.5 to 11 mm, and the offset of the peaks was maintained at the level of 10 to 35 mm, the Radius of curvature could be regulated by using a slightly higher stand Durometer or by changing the protrusion of the clip from the base of the polishing mandrels.

In another test performance were prepared samples of adhesives with very high melting temperature (in this test we used the materials manufactured by Henkel). For testing the operating characteristics of the adhesive Henkel 12-692, 15 pairs of connectors SM SC/UPC were subjected to full environmental tests in accordance with the requirements of the standard Telcordia GR-326. All connectors SM SC/UPC was introduced adhesive with a very high melting point, and all of the optical fibers were introduced into the connectors, as described above. All the samples were successfully tested on the optical characteristics (change loss of not more than 0.3 dB, and a reflection of not less than 55 dB).

In another test performance was tested seven pairs of connectors of the type LC, C is executed by adhesive with a very high melting point. In this case, was used adhesives with very high melting temperature manufactured by Henkel, and the optical fiber was introduced into the connectors, as described above. All the samples have successfully passed the acceptance tests Telcordia GR-326. We used the same temperature ranges, but a smaller duration of trials for faster results.

This invention is not limited to the above-described examples of the invention and should be construed as covering all aspects of the invention described in the following claims. This invention covers various modifications, equivalent processes, as well as different designs, which can be applied to this invention and which are obvious to a person skilled in the art. The purpose of the claims is included in the invention of these modifications and variations of the structures.

1. Fiber optic connector mounted on the end of the optical fiber, which includes:
the body that provides the connection to the socket type LC, made of a polymer material that does not deform when exposed to temperatures of at least 210°C, and
site holder comprising a sleeve and ring, inside of which is introduced in advance floor is a crystalline thermoplastic adhesive material, preferably the material based on polyamide with a high melting point.

2. Fiber optic connector according to claim 1, characterized in that it contains a thermoplastic adhesive material with a very high melting point, preferably a thermoplastic adhesive material with a very high melting temperature, which has a viscosity in the molten state in the range of 1 to 20 PA·s in the temperature range from 200 to 250°C. and a young's modulus which exceeds 0,6896·1011PA within operating temperatures from -40 to +85°C.

3. Fiber optic connector according to claim 1, characterized in that it contains a thermoplastic adhesive material, the content of crystalline phase which is in the range from 15 to 35%.

4. Fiber optic connector according to claim,1, wherein the inside is a polymeric material that does not deform when exposed to temperatures of at least 210°C. and which also includes an optical fiber fixed in the holder using the specified thermoplastic adhesive having a working temperature range from -40 to +85°C.

5. Fiber optic connector according to claim 1, characterized in that the sleeve includes an elongated tube made of a material with high thermal conductivity.

6. Fiber optic connector according to claim 1, characterized in that it also includes all the I optical fiber, secured in the holder with the specified thermoplastic adhesive, while the position of the optical fiber in the ferrule may be modified by heating and subsequent cooling of the shroud.



 

Same patents:

FIELD: physics.

SUBSTANCE: optical connection element and a connector are designed such that they can be made using a forming method with allowance of not less than 1000 nm. The said components also have sealing rings and sleeves. The sealing ring may consist of two identical halves which are forged and gathered together. Alternatively, the sealing rings may be designed such that, they can be made through moulding or a combination of forging and moulding methods. A pair of sealing rings which hold one or more optical fibres is joined using a high-precision split sleeve without additional aligning tools.

EFFECT: easier making a connection element without reduction of accuracy of joining optical fibres.

16 cl, 43 dwg

FIELD: physics; optics.

SUBSTANCE: connector consists of two opposite hollow half-couplings inside of which there are connected optical fibre sections. On butt-ends of the optical fibre sections there are optical multilayer transformers which provide matched non-reflection transition from the optical fibre medium with refraction index nof>1 to air medium (n0=1) of a gap with size of 1-2000 the medium wavelength of the signal transmitted through the optical fibre (λ0) formed by between the outer layers of the opposite optical transformers.

EFFECT: lower power loss level at the joint in the given wavelength range.

4 cl, 8 dwg

FIELD: optoelectronics.

SUBSTANCE: proposed connector assembly comprises connector (10) made from material with shape memory and having casing (16), connector channel (22) running from first end (18) to second end (20) and having multiple pins (24, 26), first and second flanges (34), and connector socket consisting of four parts (38) that make, when assembled, a connector chamber. Two of aforesaid assembled parts make first end, the other two parts make the connector socket second end, both parts being arranged to allow applying expanding force to connector (10) and flanges, fitted inside aforesaid chamber, by axially rotating connector socket first end relative to second end. In compliance with second version, every aforesaid end has a hole and passage through channel between said hole and connector chamber, while connector assembly additionally comprises needle (54) to be inserted through said hole, to expand aforesaid channel on inserting said needle through said channel.

EFFECT: simple and fast mounting, good signal passage between optical fibers.

3 cl, 12 dwg

FIELD: physics.

SUBSTANCE: fibre-optic connector for mechanical splicing of first and second optical fibres with removed coatings has a case which is divided into sections which are arranged such that, optical fibres can be clamped. The case has at least three independently opening main clamping sections, with dimensions which allow for directly clamping the naked part of the first and second optical fibres, and at least one additional independently opening clamping section with dimensions which allow for clamping the coated part of one of the optical fibres. Clamping sections are made such that, the first optical fibre can be clamped by the first main clamping section independent of the second optical fibre, making it possible to clamp the first optical fibre from rotation and axial displacement relative the case of the connector, so as to essentially leave untouched the next clamping or unclamping of the second fibre. The second of the three main clamping sections can only clamp the second fibre, and the third can only clamp the first and second fibres at the same time.

EFFECT: simple design.

20 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: proposed multifunctional socket coupler and multifunctional coupling plug assembly contains the socket coupler base (11) and the socket coupler polymeric protective cover (21) with electric connection throughholes (151a, 151b) and the fibre throughhole (131, 131a, 131b) distanced from the electric connection throughholes (151a, 151b). It also contains a guide element (23, 91, 93) designed to provide for the optical fibre (61) cleared end reception and positioning in a pre-defined relationship to the fibre throughhole (131) and a clamping element (71, 83) for the optical fibre (61) reversive clamping with the fibre end in a pre-defined relationship to the fibre throughhole (131). The above socket coupler polymeric protective cover (21) is designed to enable axial and transverse direction of the optical fibre.

EFFECT: fabrication of a multifunctional socket coupler and multifunctional coupling plug assembly characterised by cost-efficiency of manufacture, installation simplicity and fitness for flexible (multifunctional) applications.

22 cl, 6 dwg

FIELD: physics, communication.

SUBSTANCE: invention is related to device for seizure and splicing of optic fibers. Device comprises part that has hingedly joined the first and second elements. Part has seizure area, which includes the first and second seizing parts, which are located on the first and second internal surfaces of every element. Part additionally comprises the first and second areas of compression along length of seizure area. Device for seizure and splicing of optic fibers additionally comprises tip arranged with the possibility of engagement with part for selective actuation of the first compression area independently on actuation of the second compression area.

EFFECT: seizure and splicing may be performed with multiple areas of seizure/splicing, which provides for different level of action that might be transmitted to optic fiber located in certain zone and in certain place, according to sequence of splicing.

8 cl, 8 dwg

FIELD: physics, optics.

SUBSTANCE: invention concerns fibre optics and optronics. It can be applied to linking of groups of fiber-optical cables among themselves. In the socket the centralisers are executed from an elastic material. One of edges of a gash of every centraliser is fixed in a socket material. On other edge from each leg of a tip there are salients. From each leg of the fiber-optical socket the slider is available. There are holdfasts of an open standing of the socket. At centre of each of the socket legs, there are the buttons relieving a holdfast. Each fiber-optical plug has the mobile lattice of squeezing of springs or an elastic material for plug tips springing. In each plug there is a lever. There is a device of fixing of a lattice. Vacuities of the centralisers densely sweep plug tips. Thus moves a slider, fixing a plug in the socket and voiding the mobile lattice for travel. The elastic material creates necessary effort of squeezing of end faces of tips.

EFFECT: simplification of linking and socket release, the small sizes of a socket at linking of major number of fibrils, pinch of accuracy of alignment and making of necessary clamping effort of end faces of fibrils on each pair of joined light guides, possibility of installation of optical fibrils in fiber-optical plugs in field requirements that allows to refuse application in fiber-optical networks of patch-panels.

2 cl, 8 dwg

FIELD: connection of optical fibers.

SUBSTANCE: connector used for connecting two optical fibers has longitudinal case. Case has first end and second end. Case is provided with channel for fiber, which channel goes along axis from mentioned first end of case to mentioned second end of case. Case is made for reception of mentioned ends of two optical fibers. Case is divided to multiplicity of fingers, which fingers go in longitudinal direction in any end of first and second ends of case. Fingers in first end of case are shifted along circle for preset value from fingers at second end of case. Fingers at first end of case overlap at axial direction fingers at second end for preset value. At least some of fingers have parts in form of harmonicas, where fingers are divided to multiplicity of harmonica-shaped fingers which go in lateral direction. Case is made to be brought into open position to contain mentioned optical fibers in channel for fibers. Case is also made for deformation uniformly after it is brought into mentioned open position. As a result, case is made for perform of sequence which consists in centering of mentioned optical fibers, compression of mentioned optical fibers one against other and clamp of mentioned optical fibers to fix those fibers at preset position. Case is made for application of first stresses in that site of channel for fiber where mentioned optical fibers make contact one with other. Case is also made for application of second stresses close to first and second ends. Mentioned second stresses exceed essentially mentioned first stresses.

EFFECT: higher efficiency of connection; simplicity of usage; good passage of signal among optical fibers.

4 cl, 10 dwg

FIELD: sleeve for installation of plug connectors therein.

SUBSTANCE: the sleeve contains mobile cover, engaged with barrel aperture. In first position the intersection laps over the barrel aperture. On insertion of plug connector it moves to second position. Intersection frees the barrel aperture. Intersection contains curved metallic flat spring. The flat spring in first position is unloaded. The curve of the flat spring is selected in such a way, that the tip of plug connector never comes into contact with flat spring at any moment of concatenation process. The flat spring is positioned tangentially to side surface of connecting part. Two wings are positioned adjacently to the side surface, by means of which wings the intersection is connected to internal surfaces of connecting part body.

EFFECT: creation of sleeve having small outward size, which prevents harmful laser radiation from exiting and does not have high manufacturing costs.

6 cl, 8 dwg

FIELD: instruments.

SUBSTANCE: method comprises connecting first fiber (20) with first specially oriented key member (4), setting key member (4) into holder (29) that receives the key member only when it is specially oriented, cutting fiber (20) at a given angle with respect to holder (29) to form a sloping face (24) of the fiber, removing the key member from the holder, setting the key member into housing (2) of the device for joining that receives the key member only when it is specially oriented so that sloping surface (24) of the fiber is in a given radial position with respect to the housing of the device. The operations are repeated for second fiber (21) and second key member (5).

EFFECT: enhanced precision of connecting.

13 cl, 6 dwg

FIELD: optics.

SUBSTANCE: device has two fixing devices for receiving two single pin connectors with forming of one duplex pin connector. Fixing means are made so that they envelope at least partially the pin body and means for protecting cable from bends, to be subject to placement in socket of pin connector. Fixing means is made in form of C-shaped socket, to which rectangular socket is adjacent, practically having L-like shape. On upper side of device an arc-shaped element can be placed, which in fixed position of simplex pin connectors envelopes their contacts.

EFFECT: higher efficiency.

2 cl, 6 dwg

Light guide // 2248023

FIELD: fiber-optic communications.

SUBSTANCE: device has body and elements for pressurization of light guide. In hollow of body pressurizing element is inserted, in form of resilient compactor vulcanized on optic cable with glue previously applied to vulcanization area and made with conic outer surface at one end, contacting with body, and at other end pressing nut is mounted. Between guiding elements of guide and body compacting rings are placed.

EFFECT: reliable operation under pressure up to P = 14,7106/Pa and under loads of up to 500g.

2 cl, 2 dwg

FIELD: engineering of connecting devices for fiber-glass connectors.

SUBSTANCE: device contains front panel 2,4,202 and simplex or two-channel connecting sleeve 1,1',1'',201,207, made with possible insertion into front panel 2,4,202 and with possible disengagement from front portion side, and containing connecting sleeves, which are made with possible blocking in front panel 2,4,202 by means of blocking springs 14,14',14'',214. Besides pin sockets 21,41 for inserting connecting sleeves, front panel 2,4,202 has apertures 22,23,45,46 made in several positions on its front portion for disengaging connecting sleeves, which have flanges 12,121,212,212' for positioning on frontal portion of front panel 2,4,202, and blocking spring 14,14',14'',214 for hooking to front panel 2,4,202 behind the latter.

EFFECT: simplified construction of device.

2 cl, 14 dwg

FIELD: instruments.

SUBSTANCE: method comprises connecting first fiber (20) with first specially oriented key member (4), setting key member (4) into holder (29) that receives the key member only when it is specially oriented, cutting fiber (20) at a given angle with respect to holder (29) to form a sloping face (24) of the fiber, removing the key member from the holder, setting the key member into housing (2) of the device for joining that receives the key member only when it is specially oriented so that sloping surface (24) of the fiber is in a given radial position with respect to the housing of the device. The operations are repeated for second fiber (21) and second key member (5).

EFFECT: enhanced precision of connecting.

13 cl, 6 dwg

FIELD: sleeve for installation of plug connectors therein.

SUBSTANCE: the sleeve contains mobile cover, engaged with barrel aperture. In first position the intersection laps over the barrel aperture. On insertion of plug connector it moves to second position. Intersection frees the barrel aperture. Intersection contains curved metallic flat spring. The flat spring in first position is unloaded. The curve of the flat spring is selected in such a way, that the tip of plug connector never comes into contact with flat spring at any moment of concatenation process. The flat spring is positioned tangentially to side surface of connecting part. Two wings are positioned adjacently to the side surface, by means of which wings the intersection is connected to internal surfaces of connecting part body.

EFFECT: creation of sleeve having small outward size, which prevents harmful laser radiation from exiting and does not have high manufacturing costs.

6 cl, 8 dwg

FIELD: connection of optical fibers.

SUBSTANCE: connector used for connecting two optical fibers has longitudinal case. Case has first end and second end. Case is provided with channel for fiber, which channel goes along axis from mentioned first end of case to mentioned second end of case. Case is made for reception of mentioned ends of two optical fibers. Case is divided to multiplicity of fingers, which fingers go in longitudinal direction in any end of first and second ends of case. Fingers in first end of case are shifted along circle for preset value from fingers at second end of case. Fingers at first end of case overlap at axial direction fingers at second end for preset value. At least some of fingers have parts in form of harmonicas, where fingers are divided to multiplicity of harmonica-shaped fingers which go in lateral direction. Case is made to be brought into open position to contain mentioned optical fibers in channel for fibers. Case is also made for deformation uniformly after it is brought into mentioned open position. As a result, case is made for perform of sequence which consists in centering of mentioned optical fibers, compression of mentioned optical fibers one against other and clamp of mentioned optical fibers to fix those fibers at preset position. Case is made for application of first stresses in that site of channel for fiber where mentioned optical fibers make contact one with other. Case is also made for application of second stresses close to first and second ends. Mentioned second stresses exceed essentially mentioned first stresses.

EFFECT: higher efficiency of connection; simplicity of usage; good passage of signal among optical fibers.

4 cl, 10 dwg

FIELD: physics, optics.

SUBSTANCE: invention concerns fibre optics and optronics. It can be applied to linking of groups of fiber-optical cables among themselves. In the socket the centralisers are executed from an elastic material. One of edges of a gash of every centraliser is fixed in a socket material. On other edge from each leg of a tip there are salients. From each leg of the fiber-optical socket the slider is available. There are holdfasts of an open standing of the socket. At centre of each of the socket legs, there are the buttons relieving a holdfast. Each fiber-optical plug has the mobile lattice of squeezing of springs or an elastic material for plug tips springing. In each plug there is a lever. There is a device of fixing of a lattice. Vacuities of the centralisers densely sweep plug tips. Thus moves a slider, fixing a plug in the socket and voiding the mobile lattice for travel. The elastic material creates necessary effort of squeezing of end faces of tips.

EFFECT: simplification of linking and socket release, the small sizes of a socket at linking of major number of fibrils, pinch of accuracy of alignment and making of necessary clamping effort of end faces of fibrils on each pair of joined light guides, possibility of installation of optical fibrils in fiber-optical plugs in field requirements that allows to refuse application in fiber-optical networks of patch-panels.

2 cl, 8 dwg

FIELD: physics, communication.

SUBSTANCE: invention is related to device for seizure and splicing of optic fibers. Device comprises part that has hingedly joined the first and second elements. Part has seizure area, which includes the first and second seizing parts, which are located on the first and second internal surfaces of every element. Part additionally comprises the first and second areas of compression along length of seizure area. Device for seizure and splicing of optic fibers additionally comprises tip arranged with the possibility of engagement with part for selective actuation of the first compression area independently on actuation of the second compression area.

EFFECT: seizure and splicing may be performed with multiple areas of seizure/splicing, which provides for different level of action that might be transmitted to optic fiber located in certain zone and in certain place, according to sequence of splicing.

8 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: proposed multifunctional socket coupler and multifunctional coupling plug assembly contains the socket coupler base (11) and the socket coupler polymeric protective cover (21) with electric connection throughholes (151a, 151b) and the fibre throughhole (131, 131a, 131b) distanced from the electric connection throughholes (151a, 151b). It also contains a guide element (23, 91, 93) designed to provide for the optical fibre (61) cleared end reception and positioning in a pre-defined relationship to the fibre throughhole (131) and a clamping element (71, 83) for the optical fibre (61) reversive clamping with the fibre end in a pre-defined relationship to the fibre throughhole (131). The above socket coupler polymeric protective cover (21) is designed to enable axial and transverse direction of the optical fibre.

EFFECT: fabrication of a multifunctional socket coupler and multifunctional coupling plug assembly characterised by cost-efficiency of manufacture, installation simplicity and fitness for flexible (multifunctional) applications.

22 cl, 6 dwg

FIELD: physics.

SUBSTANCE: fibre-optic connector for mechanical splicing of first and second optical fibres with removed coatings has a case which is divided into sections which are arranged such that, optical fibres can be clamped. The case has at least three independently opening main clamping sections, with dimensions which allow for directly clamping the naked part of the first and second optical fibres, and at least one additional independently opening clamping section with dimensions which allow for clamping the coated part of one of the optical fibres. Clamping sections are made such that, the first optical fibre can be clamped by the first main clamping section independent of the second optical fibre, making it possible to clamp the first optical fibre from rotation and axial displacement relative the case of the connector, so as to essentially leave untouched the next clamping or unclamping of the second fibre. The second of the three main clamping sections can only clamp the second fibre, and the third can only clamp the first and second fibres at the same time.

EFFECT: simple design.

20 cl, 11 dwg

Up!