Portable device for fixing connector to optical fibre
SUBSTANCE: inventive connector is configured to receive an optical fibre and further comprises: a connector housing, a fibre fastening member disposed in the connector housing, and a thermoformable material disposed around the fibre attaching member and mounted to receive the optical fibre between the fibre attaching member and the thermoformable material and for attaching the optical fibre to the fibre attachment member. Herewith the fibre optic connector for mechanical connecting to another fibre optic connector comprises an optical fibre having a bare end that has an end face and comprises a core and a shell surrounding the core, whereint the shell has a radius of curvature at the end face in the range from 0.4 mm to 4 mm.
EFFECT: high wear resistance with a sequence of joints and undocking.
29 cl, 69 dwg
FIELD: physics, optics.
SUBSTANCE: invention relates to an illumination device. The device comprises a light source and a lens placed in front of the light source. The lens is provided with a light input surface on the side facing the light source and a light output surface on the side away from the light source. The lens includes a certain number of strip elongated light guide elements connected to each other near the second ends and has light input surface and a light output surface. Light beams emitted by the light source are transmitted to the elongated light guide elements through total internal reflection.
EFFECT: lower detectable brightness owing to a larger light output surface compared to the light emitting surface.
9 cl, 12 dwg
SUBSTANCE: this fibre consists of a central waveguide rod of chalcogenide glass, microstructural waveguide shell of alternating plies of said glass and air gaps and second protective microstructural shell of multicomponent glass. Proposed method comprises pre-drawing of rods. Then, chalcogenide insert if formed by laying the rods of chalcogenide glass with appropriate air gaps. Then, outer support capillaries of multicomponent glass are fitted in thick-wall tube of multicomponent glass.
EFFECT: high nonlinearity.
5 cl, 2 dwg
SUBSTANCE: optical probing signal is entered into each fibre of the optical line. Each specified signal which passed through the respective fibre of the line is consistently read out and an optical fibre in the line is identified on the basis of the received signal. The probing signal for each fibre of the line has a unique sequence of optical impulses which characterizes the number of optical fibre in the line.
EFFECT: automation of the process of identification of optical fibres, improvement of reliability of identification of the ends of optical fibres irrespective of their number, arrangement and colour marking.
2 cl, 2 dwg, 1 tbl
SUBSTANCE: dry, deuterium-containing gases, for example dimethylsulphoxide D6 vapours, are introduced into a tube of a fibrous light guide workpiece. Alloying of precipitable layers of a glass core and envelope with small additions of deuterium is carried out both in the process of the layer precipitation and at high-temperature tube compression.
EFFECT: reduction of the light guide optical loss and mass loss of workpieces, reduction of thereof production process duration.
2 cl, 1 tbl
FIELD: physics, optics.
SUBSTANCE: invention relates to single-mode optical fibres having a low attenuation coefficient. The optical waveguide fibre includes a core and a cladding. The core includes an alpha-profile, where alpha (α) is greater than 2.5 and less than 3.0. The core and cladding provide the fibre with an attenuation coefficient of less than 0.331 dB/km at wavelength of 1310 nm, attenuation coefficient of less than 0.328 dB/km at wavelength of 1383 nm, attenuation coefficient of less than 0.270 dB/km at wavelength of 1410 nm and attenuation coefficient of less than 0.190 dB/km at wavelength of 1550 nm. Also provided is a method of producing the optical fibre.
EFFECT: reduced attenuation coefficient and bending loss.
5 cl, 8 dwg, 5 tbl
SUBSTANCE: invention relates to lighting devices. In a light-emitting device a light source has narrow or limited distribution of light intensity. The device is designed so that light from a source is emitted with a wider spatial distribution of light intensity through a peripheral surface at the light emission section designed as a funnel.
EFFECT: light-emitting device in addition contains a mixing section for the light radiated from the source.
13 cl, 8 dwg
SUBSTANCE: invention is related to a lighting facility with waveguide. The device comprises a waveguide element with the first and second outer surfaces and waveguide boundary. LED-based radiation source with optional collimating optical element is intended for radiation entry to the waveguide element through waveguide boundary. The first outer surface comprises structures for output of radiation from the waveguide element through the second outer surface. The device comprises a cavity with reflector in order to reflect radiation in the cavity in sideway direction from the second outer surface.
EFFECT: development of compact-size and thin lighting facility, which may be suspended to the ceiling, ensuring lighting from the ceiling by means of lighting in upward direction and lighting of the specific are by means of lighting in downward direction.
15 cl, 27 dwg
SUBSTANCE: invention relates to a device for removal of a cover of an optic fibre. In device (11) for removal of the cover of the optic fibre for drawing of glass fibre (1a) from coating (1b) by cutting coating (1b) in part (31) for removal of the cover and movement of part (13) for retention of the optic fibre to the side from the main unit (12) of the device for removal of the cover in a heated state, part (31) for removal of the cover is provided with supporting element (43) of a heater, on which heater (42) is installed, supporting element (43) of the heater is arranged in a recessed receiving part formed in housing (12a), heat-insulating gap (55) is formed between recessed receiving part (51) and supporting element (43) of the heater, the side surface of supporting element (43) of the heater and the inner surface of side wall (51b) of recessed receiving part (51) come into contact with each other by means of side rib (61) made on supporting element (43) of the heater.
EFFECT: providing a possibility of removal of a coating without any water penetration and with lower traction force, which is required for removal of the coating.
4 cl, 15 dwg
SUBSTANCE: cartridge for an apparatus for welding optical fibres comprises a base in the form of a plate with a rectangular shape in plain view which is positioned on a working surface, on the front surface of said plate of which on the edges of the same oppositely lying sides there are upward protruding prism-shaped blocks with sockets for mounting rod electrodes which are inserted coaxially with pointed ends opposite each other over the central part of the plate between the blocks. The rod electrodes at the other ends have nodes for connecting to a power supply for arc welding. In the central part of the plate there is a working area with sockets in form of coaxial channels lying along an axis perpendicular to an axis which passes through the rod electrodes while crossing the latter in the arc welding area for positioning ends of the optical fibres to be welded in the arc welding area. The working area has two spaced-apart guides on which V-shaped channels are formed, which are laid in reciprocal grooves on the back side of the plate in the prism shape of the blocks with through-openings for inserting the rod electrodes, provided with units for movement thereof along said openings for adjusting the position of the pointed ends thereof relative to each other, passing through coaxial cavities. In each prism shape of the block there is a through-opening for holding a cup-shaped element with a fastening element for a rod electrode.
EFFECT: simple design, high efficiency and easy usage.
SUBSTANCE: fibre-optic guide is obtained by chemical deposition of quartz glass from a mixture of starting gaseous reagents. The optic guide has a core of undoped quartz glass with low content of chlorine in the glass of the core due to considerable excess of oxygen O2 relative to silicon tetrachloride SiCl4 during manufacture.
EFFECT: providing high radiation resistance of an optic guide in the near infrared range by suppressing radiation-induced light absorption.
32 cl, 7 dwg
SUBSTANCE: zirconium dioxide powder is mixed with temporary process binder. Injection moulding is carried out with a rod made of fluorocarbon-based material, which is removed together with the temporary process binder with further sintering.
EFFECT: reduced signal loss owing to simple achievement of coaxiality of capillary openings.
SUBSTANCE: fibre-optic socket has a housing with a centraliser, the centraliser being in form of a floating coupler, having an annular groove in the central part of the outer cylindrical surface, and opposite ends of the floating coupler have conical outer surfaces. The housing of the fibre-optic socket has an inner annular groove in which an additional fixing element is inserted, said element being located in the annular groove of the floating coupler. The floating coupler can be in form of a resilient collet element and has one or more elements; the fixing element of the floating coupler can be in form of an resilent split ring. Opposite ends of the resilient collet element have conical outer surfaces. The resilient collet element can have in the central part of the outer cylindrical surface a protrusion for fixation thereof in the annular groove of the housing of the fibre-optic socket.
EFFECT: high impact and vibration resistance of the fibre-optic socket while maintaining accuracy of accuracy of coupling ferules of convectors and simple design.
6 cl, 8 dwg
SUBSTANCE: fibre-optic connector for use together with a fibre-optic adapter has a connector housing, having an end which forms a pluggable section. A casing unit is placed inside the housing. A sealing element is placed around the outer side of the housing of the connector to form a seal between the housing of the connector and the adapter. The fibre-optic connector also has first and second separated means of fastening the fibre-optic connector inside the fibre-optic adapter. The housing has a main part which stretches from the far end to the near end, and a cover. A channel passes through the housing of the connector.
EFFECT: compact design, which enables to achieve high packaging density.
13 cl, 23 dwg
SUBSTANCE: assembly of a mounting support and a fibre-optic connector adapter are mounted on a support, wherein the adapter has an axis for placing the connector and at least one lateral mounting projection on one of its sides. The mounting support has vertical walls passing upwards from the support on both sides of the said adapter, the wall elements of which define mounting slots adapted to receive said mounting projections of the adapter. The slots are formed to allow movement of the adapter between a first position in which the adapter is supported with its axis at an acute angle to the support, and a working position in which the adapter is supported essentially parallel to the support. The wall elements define, in the slots, shoulders on which the mounting projections of the adapter are supported. There is a resilient vertical wall element on the shoulder to removably support the mounting projection.
EFFECT: simple design of the assembly.
3 cl, 6 dwg
FIELD: machine building.
SUBSTANCE: proposed optical connector comprises case and coupling fixed in said case. Case may be connected with seat. Said coupling comprises rotary head and main part. Rotary head can house ferule and be connected to coupling main part front end to turn relative to coupling main part front end at lateral pull preset force applied to connector and/or optical fiber.
EFFECT: perfected connector.
15 cl, 18 dwg
SUBSTANCE: connector for a fibre-optic cable or connection of switching cords comprises a body, an adapter for an optical connector, a holder for an adapter and a facility to release stresses in a cable or a cord attached to a body. The holder may be integral with the body or be fixed on it or in it, and provides for limited displacement along the adapter axis inside the holder. The value of axial shift is more than the value of shift from bending deformation of the body, which is caused in the place of fixation of the facility for release of stresses by means of manual withdrawal of a cable or a cord from the body.
EFFECT: reduced effect of body deformation as a result of pulling along an axis caused by any type of applied stress on a cable or a cord, release of stresses from a cable inside a slot.
5 cl, 8 dwg
SUBSTANCE: device has outer body made from an elastically deformable material, a cylindrical guide having a front portion attached in the rear portion of the outer body and a rear portion protruding from the rear portion of the outer body. A cable adapter extends through the cylindrical guide. An elongated floating ferrule extends through the front portion of the outer body. The ferrule is connected to a ferrule holder movably mounted in said outer body. A support means rests on the first shoulders of the outer body, and a helical spring provided between the front portion of the cylindrical guide and the support means of the ferrule holder. The cable adapter is mounted so as to float within the cylindrical guide.
EFFECT: improved contact.
12 cl, 2 dwg
FIELD: instrument making.
SUBSTANCE: device comprises a tight body in the form of a sleeve, at end covers of which there are assemblies of power closing of armoured winding and assemblies of cable sealing. Inside the tight body there are cassettes installed to lay optic fibres and areas of their welding and end bending couplings. Additionally in the body there are compensators of optic fibres movements made in the form of optic fibre loops placed in protective jackets. Modules of optic fibres contain sections in the form of rings attached to each other. The tight body is equipped with a protector made in the form of two jackets that cover the sleeve of the tight body with a gap and rigidly fixed with it by one end.
EFFECT: increased reliability of coupling for underwater fibre-optic cables with a central module.
2 cl, 6 dwg
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
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: device relates to optic fiber articles, such as cables, splitters, connectors etc. Device for removing polymer shell of optic fiber includes heating element, filtre, electromagnetic valve and gas flow switch, gas flow channel passing through them, drawing mechanism. Heating element is connected to gas flow switch and made in the form of at least two spirals with capillary quartz tubes for gas flow transit, connected to gas flow switch. Outlet ends of tubes are oriented towards optic fiber at different sides, and optic fiber is fanned by gas flow at gas flow direction switch rate of 15-30 times per second.
EFFECT: improved quality of removing polymer shell of optic fiber without damage to fiber.
4 cl, 2 dwg