Apparatus for transmitting optical signals from input optical waveguide to output optical waveguide (versions)

FIELD: physics.

SUBSTANCE: apparatus has two collimating units which can turn relative each other around an axis of rotation, and one optical element which compensates for rotation. A first power splitter receives input signals and splits said signals into at least two signals for transmission over at least two optical channels through the collimating units and the optical element compensating for rotation. After passing through the second collimating unit, the signals are combined into one signal in a second power splitter. A version of the apparatus has an optical attenuator which is connected to one component from the first collimating unit, the second collimating unit and the optical element compensating for rotation, or a gear which rotates the optical attenuator. In one of the versions, the attenuator is controlled by a controller.

EFFECT: minimisation of change in attenuation in a rotary joint during rotation, as well as provision for transmission of analogue optical signals which carry information encoded in the amplitude or level of the signal.

17 cl, 9 dwg

 

The technical field to which the invention relates.

The present invention relates to a device for transmitting optical signals between the elements can rotate relative to each other. Such a device provides simultaneous transmission of multiple optical signals on multiple channels. Proposed in the invention of the rotary connection is preferably used for the transmission of analog signals.

The level of technology

There are various transmission systems for transmitting digital optical signals between the elements can rotate relative to each other. Such systems are referred to as rotating joints or rotating connections.

In the patent US 5568578 described optical rotating connection for multiple channels, including the prism of Trust. Light enters from the first collimator to the second collimator, the optical path (light paths) between the collimators is compensating the rotation of the prism, which rotates at a speed or angular velocity, which is twice less than the speed of relative rotation of the collimators. Due to mechanical and optical tolerances attenuation changes as rotation. It depends on the relative angular position of the rotating and stationary components of the rotary connection. Such a variable attenuation leads to IZMENENIY level of the optical signal. Consequently hampered the transmission of analog signals that carry the information encoded in the amplitude. It doesn't matter for digital signals, for which you only have to pass the state of "zero" and "unit".

In EP 1476969 described a rotating device for data transmission, in which the light passed through many reflections on the groove with a mirror coating. The attenuation of the incident light varies greatly depending on the mutual angular position of the rotating and stationary parts of the device.

Disclosure of inventions

The present invention is to further improve the optical rotating connection for transmission of optical signals in such a way as to minimize changes of damping in rotating connection during rotation. Another goal is to create a rotating connection applicable for transmission of analog optical signals that carry the information encoded in the amplitude or signal level.

In accordance with the invention these problems are solved in the optical rotating connection device for transmitting optical signals from the input fiber to the output optical fiber that includes a first collimator unit, the second collimator unit, while the first and/or second collimator blocks set the go with the possibility of rotation relative to each other, and at least one compensating rotation of the optical element made of an optically transparent medium and located between the first collimator unit and the second collimator unit for transmitting light rays from the first collimator unit in the second collimator unit or Vice versa.

In the first embodiment, the claimed device also includes a first power divider, receiving signals from the input optical fiber and dividing them by at least two of the signal in two different first collimator of the first collimator unit and the second power divider, receiving signals from at least two of the second collimator to the second collimator unit, and second collimators correspond to the first collimators, and the power splitter combines the above-mentioned signals into one output signal from the output fiber. After passing the signal through the second collimator unit of the second power splitter combines the signals into one signal, which significantly reduced the changes, or vibrations, damping during rotation.

In the second embodiment, the claimed device also includes at least one optical attenuator connected to at least one component from among the first collimator unit, the second collimator unit and compens is regulating the rotation of the optical element, or gear leading optical attenuator in rotation at a speed in a predetermined relation to the speed of rotation between the collimator blocks.

In the third embodiment, the claimed device also includes at least one adjustable optical attenuator connected to the external side of the first collimator unit or the second collimator unit, and an optical attenuator is controlled by the controller generating control signals in such a way as to set the adjustable optical attenuator values, compensating changes of attenuation on the optical path between the first collimator unit and the second collimator block.

Brief description of drawings

Further the invention without limiting the General inventive concept is described with examples of variants of its implementation and with reference to the drawings on which is shown:

figure 1 - General scheme proposed in the invention device,

figure 2 - the scheme is known from the prior art rotary connection

figure 3 - schematic side view of a prism of the first collimator,

figure 4 is a simplified front views of two different embodiments of optical attenuators,

figure 5 is another variant of the invention, comprising an adjustable attenuator.

figure 6 - d the natives variant of the invention, includes adjustable attenuator together with the control circuit power,

7 - rotatable connection, combined with two attenuators,

on Fig standard curves decay,

figure 9 is another variation of the embodiment of the invention, in which use is dependent on the wavelength of the power divider.

The implementation of the invention

Proposed in the invention of the optical rotary connection comprises at least two reflector unit mounted rotatably relative to each other around a certain axis. These collimator blocks are preferably collimators for beam formation of the transmitted light. However, they are not necessary can also be sources of light, such as lasers, light detectors, such as LEDs or other light guide elements, such as fiberglass. Each collimator is "outside" for communication with the light source and/or sotapanna using the first light guide 2 or the second optical fibers 5. The other side facing in the direction of compensating the rotation of the element, also referred to as "inner side". Between at least one first collimator unit and at least one second collimator unit mounted rotatably relative to the first collimator is Loka, the path (trajectory) of propagation of the optical signal for transmission of light. This optical path is also called a channel. This optical path is at least one compensating rotation element for display light coming from the first collimator unit, the second collimator unit and in the opposite direction regardless of the rotational motion between the two collimator blocks. Enclosure rotation element of this kind can be, for example, the prism of Trust or prism, Abbe-Koenig. Further to indicate compensatory rotation element of the overall configuration also uses the collective term "prism".

In this case, the term "collimator" means a guide or shape the beams of the element in the widest sense. The purpose of the collimator of this kind consists in the transformation of light entering the light guide, for example, by single-mode fiber fiber or even multimode optic fiber, the beam that can be directed through a compensating rotation of the element. This corresponds to the path of the beam in free space or in an optical medium, such as glass or oil. Similarly, by means of the collimator can be done to reverse the conversion, i.e. from the beam passing in rotating with the Association, in the light guide. Of course, the collimator provides conversion in both directions. Using the proposed invention the rotating joints can be transmitted signals, which is preferably a signal of a single-mode optical fibers, but also optical signals, in particular, of other fibers, hereinafter referred to as optic fibers, or combinations of different signals.

Proposed in the invention, the devices can operate predominantly in both directions, i.e. from the first collimator unit to the second collimator unit or Vice versa, as well as bidirectional. Next, to simplify the description can also be referred to the input side of the light input light, etc. it is Obvious that when the reverse transmission direction, these terms refer to the corresponding sides of the light output.

Prism or compensating the rotation of the optical elements according to the invention is made of optically transparent material, preferably glass. However, may be any other material depending on the wavelength used for transmission, such as, for example, silicon or germanium.

According to the first aspect of the invention, the first power divider is connected to the outer sides of at least the first two collimators of the first collimator unit and the second power splitter is connected to the current parties at least two second collimator to the second collimator unit. Also provided by the power divider, having only one first side and a lot of second parties. If the signal is applied to the first side, the divider divides it into multiple signals on the second side. The ratio of signal levels on the second side than the first side, which is also referred to as partition coefficients, given by the design of the attenuator. It is obvious that the total power on the other side may not exceed the capacity on the first side. The divider can also act applied to the second side signals, which are combined and served on the first side. For example, the light preferably enters through the fiber light guide from the light source to the first power splitter. In it distribute at least two ways to supply light in at least two of the first collimator. Power divider preferably evenly distributes the input of the optical power distribution of the light. In the case of the two ways of spreading light by the power splitter is preferably traditinally divider, resulting in its second side on both optical paths receive signals with attenuation of 3 dB compared with the first party. Thus, the power in each optical path is reduced by half compared to the power input to the power splitter. In the learn the four ways of propagation of light is preferably used shestidesyanniki power splitter which divides the incoming light into four identical path, the capacity of each of which is one quarter of the input power at its second side compared with the first party. The light from the first collimators through a compensating rotation of the optical element enters into the corresponding second collimators same pathways of light. Of them he comes in the second power divider, in which the path of light propagation are merged into a single path. The process described above for the transmission of light from the first second collimators collimators also applies to the transmission of light in the opposite direction. Of course, the system works in both directions, only if the optical path is reversed, and the collimators are insensitive to direction. If use is sensitive to the direction of the dividers, this should be considered when choosing the direction of signal transmission. In the present description, the optical path or channel includes a first collimator of the first collimator unit and the corresponding second collimator, the second collimator unit. The term "corresponding" refers to the collimators same optical path that optically connected to each other by means of a compensating rotation of the optical element. The present invention generally applicable in the optical rotating connect the developments of any type, provided they have at least two channels.

An additional improvement can be achieved through the use of more than two collimators on each side. With a larger number of collimators can be smoothly align any dependent position change of attenuation. The preferred number of collimators is 2, 3, and 4.

In one of the preferred embodiments of the invention the first and second collimators is chosen to ensure minimal changes in attenuation. If we assume that the collimators are evenly distributed around the circumference (360°) rotary connection (see figure 3), and the attenuation may be minimal in a certain position, which is referred to as position 0°, and on the opposite side in the position 180° attenuation can be maximum, the first collimator in position 0° is preferably used in cooperation with other first collimator in position 180°. The result is a relatively constant average attenuation.

In another embodiment of the invention, the first divider 41 of the power receiving an input signal on the first side, is used for dividing the input signal into multiple signals at its second side, and the separation factor for each path of light propagation regulate to ensure minimal changes in the sound output reduction is Oia throughout the device.

In one of the preferred embodiments of the invention, the separation factor of the attenuator is adjustable.

In another embodiment of the invention the number of channels can be increased through the use of the sealing system according to the wavelengths. In addition, the power divider may have a selective wavelength and thereby to divide the signal into multiple optical paths to minimize changes of damping in the device at each wavelength.

According to another features of the invention on the optical path between the first collimator unit and the second collimator unit is at least one optical attenuator. At least one attenuator can be installed on the first collimator unit, the second collimator unit, compensative rotation element, a gear transmission or electronic drive torque at least one optical attenuator depending on the relative (mutual) angular position of the first collimating unit and the second collimator unit. At least one attenuator preferably has the characteristics of attenuation, depending on the angular position. In addition, the attenuation may depend on the radial position. It is also possible dependence on a combination of both position the deposits. At least one attenuator preferably has a round shape. Characteristics of attenuation of the attenuator can be based on previous changes in attenuation or attenuation calculations. At least one optical attenuator can be installed or connected for rotation with the same angular position or with the same speed as the first collimator unit, the second collimator unit, compensating the rotation of the element.

In one of the preferred embodiments of the invention use at least one optical attenuator, which rotates with the same angular speed as the first collimator. Due to this, it is preferably associated with the first collimator. The attenuator can also be associated with the second collimator. It is located on the optical path between the first collimator unit and the second collimator unit. The attenuator preferably has depending on the position of the decay, compensating changes depending on the angle of rotation damping. In the example above, the attenuator may have a minimum attenuation position 180° and the maximum attenuation in position 0°.

In another preferred embodiment of the invention uses at least one optical attenuator, which rotates with the same angular / min net is translated or speed of movement, as a compensating rotation of the optical element. It is preferably connected with this compensates for the rotation of the optical element. Due to this, the attenuator can compensate for changes in attenuation due to deviations or symmetry of the prism and its mounting. As the prism rotates at half (half) speed, changes in attenuation due to prism and its mounting have the frequency or repetition rate through each of the second turnover of the collimators.

In most cases, the application of the collimator and the lens or the mount provided by mechanical tolerances. Due to this, the best results can be achieved using the first attenuator and/or the second attenuator associated with one of the collimators, and the third attenuator associated with the prism or its mount.

In another embodiment of the invention, the attenuator associated with gear, driven in rotation by rotating collimators relative to each other. This attenuator can rotate at any speed, depending on the specific change of attenuation. Its final drive ratio gear preferably is a multiple of, or equal to N speeds mutual rotation of the collimators, with N an integer. Instead of gears can be used in the motor, predpochtitelno stepper motor or other actuator. They can control the electronic controller, preferably a microcontroller.

According to additional features of the invention at least one optical attenuator is connected at least with the outer side of the at least one collimator. With the outer side of the first collimator unit or the second collimator unit is preferably connected to one attenuator. At least one collimator is controlled by an electronic controller that sets the attenuation of the at least one collimator. The attenuation can be adjusted depending on the mutual angular position of the first collimating unit and the second collimator unit. For this purpose the sensor position or angle, transmitting the electronic controller a signal representing mentioned angular position. Alternatively, the controller transmits a signal representing the value of attenuation or amplitude of the signal. The value of attenuation can be determined by measuring the optical attenuation in the path of the optical signal. The value of the amplitude can be determined by measuring the transmitted optical power sensor power using the power splitter can be connected with by passing the optical signal. In addition, the controller may have a control circuit to the second constant is the overall attenuation. May not necessarily be a source of optical power to generate the reference signal, which is fed to the audio signal path. In this case, the power sensor can be directly connected to signal paths in addition to the power splitter.

Figure 1 schematically shows the cross section of the device according to the invention. Optical rotary connection according to the invention includes a first collimator unit with the first collimator 1 for connecting the first optical fiber 2 and the second collimator unit with the second collimator 4 for connecting the second optical fibers 5. The second collimator 4 is mounted for rotation relative to the first collimator 1 around the axis 6A, 6b of the rotation. For greater clarity, the axis 6 of rotation in this case is indicated by two lines 6A and 6b direct and not shown passes through a rotating connection. In the path of rays between the first collimator 1 and the second collimator 4 is a compensating rotation element 3 to compensate for the rotational motion. In this example, a compensating rotation element is a prism of Trust. Light entering the prism is refracted due to refraction in the direction of the longer sides, where it is refracted back onto the prism due to the total reflection and is refracted by the repeated refraction in the direction is, parallel to the axis of rotation of the prism. Thus, the beams at the output of the compensating rotation of the element are parallel rays. In addition, shows the first optical attenuator 11, attached to the first collimator unit 1, the second optical attenuator 12 is attached to the second collimator unit 4, and the third optical attenuator 13, attached to the body 10 of the prism. In the case of a prism is placed compensating rotation element such as a prism of Trust. The body of the prism itself is not significant for the invention. In this case, it is shown for illustration purposes only. According to the invention need at least one of these optical attenuators. Of course, there may be provided several attenuators. Preferably, at least one attenuator was attached to at least one of the collimator blocks, and additional attenuator was attached at least to one side of the prism.

Figure 2 shows the rotating compound known from the prior art. The way the rays are illustrated three optical paths 7, 8, 9.

Figure 3 shows a side view of the prism of the first collimator unit 1, and the angular position of 0° at the top, 270° right, 180° down 90° to the left.

Figure 4 shows a simplified front views of two different options to implement the Oia optical attenuators 11. The rest of the attenuators may look the same way. The attenuator has a locally varying attenuation. The density of the lines corresponds to the distribution of dark (which attenuation) of a substance in the body of the attenuator. The left attenuator has a small attenuation in the center, which increases with distance from the center, which corresponds to a darker area. This attenuator can be compensated depending on the radius of error, providing a stronger attenuation in the collimators away from the center compared to the collimators located near the center. Right attenuator has the least attenuation in the center, the stronger the attenuation of the upper and lower attenuation below. This attenuator can compensate for angle independent errors. Of course, attenuators both types can be used in combination.

Figure 5 shows another variant embodiment of the invention, in which the external adjustable attenuator 21. This attenuator controls the control signal 23 supplied by the angle sensor and the controller 22. The angle sensor and the controller 22 generates based on the location signal, which controls the attenuator 21 so that the signal at the output of the attenuator had a constant not depending on the position damping. Due to this, if the attenuation of the optical path rotating inside the Osia connection 20 is small, the attenuator 21 is to increase the attenuation. Otherwise, if the attenuation of the optical path inside the rotating connection 20 is strong, the attenuator 21 to reduce the attenuation. Alternatively, an adjustable attenuator 21 can be placed at any point on the optical path in a rotating connection 20 or on the other side rotational coupling 20. Values depend on the angle attenuation preferably pre-calculated or determined during manufacturing and by any method calibration and preferably stored in the table memory or microcontroller.

Figure 6 shows an additional variant embodiment of the invention. The optical signal in a rotating connection 20 through one of the first optical fibers 2 and coming out through one of the second optical fibers 5, passes through the divider 25 power. The divider 25 power introduces preferably a small part of the optical power at the first output signal 26, which is supplied to the power meter and the controller 24. This small part of the power is preferably 10% or less of the total optical power. The rest of the power through the second output signal 27 is served in adjustable attenuator 21. The power meter and controller 2 measures the power output and generates the control signal 23 to configure the PE meiramy attenuator 21 thus, to the average output power of the signal was constant. To simplify implementation options, illustrated in figure 5 and 6, shown from the outside of the rotating connection 20. Of course, they can be integrated into the housing of the rotating connection.

7 shows a rotating connection in combination with two dividers 41 and 42 of the power. The first divider 41 divides the input power signal in the input line 14, preferably two of the same signal on two of the first optical fibers 2 are served in a swivel connection 20. Output signals emerging from the rotating connection, two of the second optical fibers 5 are received in facing the divider 42 power, which unites them and gives in output line 43.

On Fig shows the standard curves attenuation variant implementation, shown in Fig.7. The dividers 41 and 42 of the power are regdelvalue factors, which means that the input signal is divided into two identical output signal on both outputs. Curve 30 represents the attenuation of the first optical path and the curve 31 represents the attenuation of a different optical path through the rotating connection 20. Curve 33 represents the output signal in the optical fiber 43. Due to the combination of two opposite attenuation characteristics of the resulting attenuation characteristic has a gentle curve with a very small reject the s. On the bottom axis from left to right shows a scale of the angle of rotation. A value of 1.0 corresponds to a full rotation, and a value of 2.0 corresponds to two complete revolutions. On the left axis upwards delayed attenuation in decibels (dB).

Figure 9 shows another variant embodiment of the invention, in which use is dependent on the wavelength of the power divider. In the three parts of figure 9 shows the flow of signals on the three waves of various lengths. In every part of the illustrated left side shown in Fig.7. a variant implementation of the improved divider 41 of the power. This power splitter has one input on the first side and three exits on the other side. Similar power divider is located on the other side of the rotating connection for combining signals coming from the rotating connection. They may be the divider 42 power, shown in Fig.7, although in this case it is not shown for simplification. In this embodiment, the signal containing three different wavelengths, is fed into the input fiber 40. Depending on the wavelength of the signal is spread over different optical paths of the rotating connection. In the first part of figure 9 (top) signal with the first wavelength is directed along optical paths of the first optical fibers 2A and 2b, indicated by arrows 44. In the second part of figure 9 (middle) signals from steroidlike waves sent by the three optical paths of the first optical fibers 2A, 2b and 2C, indicated by arrows 45. Finally, in the third part of figure 9 (bottom) signals with the third wavelength is directed through the two optical paths of the first optical fibers 2A and 2C, indicated by arrows 46. This alternative implementation is only an example. According to the invention may choose any combination of pathways of light of any wavelength. You can also choose different ways for different groups of wavelengths or ranges of wavelengths.

1. A device for transmitting optical signals from the input fiber to the output fiber, which includes:
the first collimator unit containing at least two collimator,
the second collimator unit containing at least two collimator,
the first and/or second collimator blocks mounted for rotation relative to each other,
at least one compensating rotation of the optical element made of the first optically transparent medium and located between the first collimator unit and the second collimator unit for transmission of light rays between the first collimator unit and the second collimator unit,
the first power divider, receiving signals from the input optical fiber and dividing them by at least two of the signal in two different first collimator of the first collimator unit, and
the second power divider is STI, receiving signals from at least two of the second collimator to the second collimator unit, and second collimators correspond to the first collimators, and the power splitter combines the above-mentioned signals into one output signal from the output fiber.

2. The device according to claim 1, characterized in that the first collimator unit contains two collimator and the second collimator unit contains two collimator.

3. The device according to claim 1, characterized in that in order to ensure minimal changes in attenuation during the rotation of a select group of the first and second collimators collimators.

4. The device according to claim 2, characterized in that in order to ensure minimal changes in attenuation during the rotation of a select group of the first and second collimators collimators.

5. The device according to claim 1, characterized in that the first power splitter is traditinally divider, which divides the received signal into two signals with the same power level.

6. The device according to claim 1, characterized in that the first power divider is adjustable partition coefficients for dividing the received signal into multiple signals, all signals have levels that are optimized to provide minimum attenuation changes when you rotate the device.

7. Device according to any one of the preceding paragraphs, characterized in that the number of channels is increased due to the use of the sealing system according to the wavelengths, and power splitters have a selective wavelength and divide the signals on the plurality of optical paths to minimize changes of damping in the device at each wavelength.

8. A device for transmitting optical signals from the input fiber to the output fiber, which includes:
the first collimator unit containing at least one collimator,
the second collimator unit containing at least one collimator,
the first and/or second collimator blocks mounted for rotation relative to each other,
at least one compensating rotation of the optical element made of the first optically transparent medium and located between the first collimator unit and the second collimator unit for transmission of light rays between the first collimator unit and the second collimator unit, and
at least one optical attenuator connected to at least one component from among the first collimator unit, the second collimator unit and the compensating rotation of the optical element, or gear, causing the optical attenuator in the rotation speed in a given ratio to the rotational speed between the collimator blocks.

9. The device according to claim 8, in which at meredin optical attenuator is located along the optical axis between the first collimator unit and the second collimator block.

10. The device according to claim 8, characterized in that at least one optical attenuator has a disk shape, and the attenuation varies in the radial, axial or circumferential direction.

11. The device according to claim 9, characterized in that at least one optical attenuator has a disk shape, and the attenuation varies in the radial, axial or circumferential direction.

12. Device according to any one of p-11, characterized in that it has one optical attenuator connected to the first or second collimator unit in such a way as to rotate together with it.

13. Device according to any one of p-11, characterized in that it has one optical attenuator, coupled with a compensating rotation of the optical element in such a way as to rotate together with it.

14. The device according to item 12, wherein there is a single optical attenuator, coupled with a compensating optical rotation element so as to rotate together with it.

15. A device for transmitting optical signals from the input fiber to the output fiber, which includes:
the first collimator unit containing at least one collimator,
the second collimator unit containing at least one collimator,
the first and/or second collimator blocks mounted for rotation relative activities is but one another,
at least one compensating rotation of the optical element made of the first optically transparent medium and located between the first collimator unit and the second collimator unit for transmission of light rays between the first collimator unit and the second collimator unit,
at least one adjustable optical attenuator connected to the external side of the first collimator unit or the second collimator unit,
moreover, the optical attenuator is controlled by the controller generating control signals in such a way as to set the adjustable optical attenuator values, compensating changes of attenuation on the optical path between the first collimator unit and the second collimator block.

16. The device according to item 15, wherein the controller receives signals from the position sensor or speed sensor, coding rotational movement between the first and second collimator blocks.

17. The device according to item 15 or 16, characterized in that at least one collimator unit through a beam splitter connected to the optical power meter for measuring optical power of the signal passing through the at least one collimator unit, and the power meter transmits the measured optical signal power control is ERU, and the controller controls the adjustable optical attenuator in such a way as to maintain the optical power of the signal at a constant level.



 

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4 cl, 1 dwg

FIELD: physics.

SUBSTANCE: fibre-optic connector has first and second half couplings for sealing first and second sections of optical fibre on whose butt ends there are first and second pairs of step-up and step-down optical multi-layer transformers. There is an air gap between the outer layers of the first and second pairs of optical multi-layer transformers. Layers of the first and second pairs of optical multi-layer transformers are made from materials with different refraction indices and are measured from outer layers of step-down transformers of the first and second pairs of optical multi-layer transformers adjacent to the air gap towards the butt ends joined to optical fibre sections. Thickness of each layer is equal to a quarter of the medium wave Xo of the signal transmitted over the optical fibre and the number of layers is selected based on conditions given in the formula of invention.

EFFECT: lower level of power loss arising due to insufficiently close contact or welded joint at the position of the joint and wider range of apparatus for this purpose.

4 cl, 7 dwg

FIELD: physics.

SUBSTANCE: fibro-optical connector comprises first and second half-couplings to receive first and second sections of optical fiber. First and second pairs of step-down optical multilayer transformers are arranged on end faces of said sections. Air gap is arranged between outer layers of said first and second pairs of said transformers. Layers of first and second pairs of aforesaid transformers are made from materials with differing indices of reflection and are counted from outer layers of aforesaid transformers in direction of the end faces of connected sections of optical fiber. Thickness of every layer makes one fourth of average signal wave λ0 transmitted over optical fiber, while the number of layers is selected subject to conditions covered by invention claim.

EFFECT: reduced power loss, expanded performances.

4 cl, 9 dwg

FIELD: physics; optics.

SUBSTANCE: invention relates to devices for splitting optical fibres, specifically to manual portable instruments. The mechanism for breaking optical fibres contains apparatus for breaking fibres and one or more clamping elements which can clamp an optical fibre at one end, which should be cut off, and apply a pulling force so as to stretch the fibre when breaking it. The mechanism is designed such that, the clamping element(s) can also push the broken part of the fibre using devices which enable the clamping element(s) to continue applying a pulling force to the cut off part of the fibre after breaking. The clamping element or each clamping element releases the cut off part when moving the cut off part of the fibre.

EFFECT: high quality joining and reliability of fibres.

11 cl, 15 dwg

FIELD: electrical engineering .

SUBSTANCE: device for introduction of laser emission in fibre, which contains optical single-mode or multimode fibres equipped with microlenses that are shaped of transparent materials, differs because microlenses are made of optical glass, refractive exponent of which is higher than the refractive exponent of light conducting thread of fibre, in the shape of sphere that embraces light conducting thread at the end of fibre, and the end surface of fibre is made in the form of polished cylindrical surface, besides, axis of cylindrical surface intersects with fibre axis and is perpendicular to fibre axis.

EFFECT: increases coefficient of emission introduction and reduces dependency of introduction coefficient on misalignment.

5 cl, 5 dwg

FIELD: the invention refers to the mode of manufacturing lens in the shape of peaks on the end-faces of single-mode and multi-mode optical fibers.

SUBSTANCE: the manufacturing mode is in plotting drops of polymerized substance on the end-face plane of the fiber, radiation of the plotted drop with a source of light for realization light photo polymerization. At that before exposure they choose one or several desired modes subjecting the optical fiber to mechanical strains, at the stages of plotting the drop and radiation they execute control and management of the form and the sizes of the peak, before the radiation stage they hold out the mixture at the given temperature for achieving viscosity of the mixture which allows to get the needed height of the drop, regulate duration of exposure and/or intensity of the light for regulating the end radius of the curvature of the peak.

EFFECT: provides possibility to get peaks of different heights and different radiuses on the end-face planes of the optical fibers and also provides possibility to control the indicated parameters of the peaks in time of their manufacturing.

26 cl, 13 dwg

Optical element // 2213987
The invention relates to optoelectronics and can be used in the processing of optical information from the optical fiber measuring networks

Optical isolator // 2204155

Beam expander // 2183337
The invention relates to integrated optics and can be used as an extender optical beam propagating in the optical waveguide, collimating or selectivity of the element in different integrated-optical elements and circuits, with the creation of tunable filters for frequency seals signals in fiber-optic communication systems

FIELD: the invention refers to the mode of manufacturing lens in the shape of peaks on the end-faces of single-mode and multi-mode optical fibers.

SUBSTANCE: the manufacturing mode is in plotting drops of polymerized substance on the end-face plane of the fiber, radiation of the plotted drop with a source of light for realization light photo polymerization. At that before exposure they choose one or several desired modes subjecting the optical fiber to mechanical strains, at the stages of plotting the drop and radiation they execute control and management of the form and the sizes of the peak, before the radiation stage they hold out the mixture at the given temperature for achieving viscosity of the mixture which allows to get the needed height of the drop, regulate duration of exposure and/or intensity of the light for regulating the end radius of the curvature of the peak.

EFFECT: provides possibility to get peaks of different heights and different radiuses on the end-face planes of the optical fibers and also provides possibility to control the indicated parameters of the peaks in time of their manufacturing.

26 cl, 13 dwg

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