CN2543081Y - Photoswitch - Google Patents

Abstract

An optical switch comprises an input device, an output device, a light path converting device an a driving device, wherein, the input device and the output device have the same structure, which both comprises an optical fiber base pin with a plurality of internally arranged fibers; the light path converting device comprises a first lens array and a second lens array. The input device transmits the input beam into the light path converting device; the driving device drives a lens of the first lens array and a special lens of the second array to be in the light path, the lens of the first lens array changes the input beam into that transmits along a special direction, for example, into beam which transmits along horizontal direction, the special lens of the second lens array then changes the direction of the light beam and transmits the light beam into the output device.

Description

Photoswitch

[technical field]

The utility model is about a kind of photoswitch, refers to a kind of mechanical optical switch that adopts lens to realize the light path conversion especially.

[background technology]

Photoswitch is a kind of each signal path in optical transmission line or the integrated optical circuit to be changed or the passive element of logical operation mutually, it is widely used in optical fiber telecommunications system, fiberoptical networking system, optical fiber measurement system and optical fiber sensing system etc., is one of optical element crucial in the optical communication field.

According to the principle of work of photoswitch, it can be divided into mechanical optical switch and non-mechanical optical switch two big classes.Mechanical optical switch is to utilize machinery, electromagnetic mode that optical fiber or optical element are moved, thereby realizes the switching of light beam between different port.Wherein, moving fiber type mechanical optical switch is realized the switching of light path by moving fiber, but because fibre diameter is little, occurs bending and deformation easily in moving process, and it is bigger to cause inserting loss, influences the transmission of light signal.Another kind of mechanical optical switch is a mobile optical element type photoswitch, and its input optical fibre and output optical fibre maintain static, and by the switching that the mobile optical element is reached light path, it is lower that this photoswitch inserts loss, generally is not more than 2dB; Isolation is higher, generally greater than 45dB; And not being subjected to the influence of wavelength and polarization, is to use comparatively general a kind of mechanical optical switch at present.

A kind of existing machinery formula photoswitch can be with reference to United States Patent (USP) the 5th, 420, and No. 946 (with reference to Fig. 1), it comprises an input media 610, a plurality of output unit 620 and a reflection unit 630.Wherein, this input media 610 comprises an input optical fibre 611 and a GRIN Lens 612, each output unit 620 also comprises an output optical fibre 621 and a GRIN Lens 622 respectively, reflection unit 630 is arranged in the central mounting hole 601 of stationary platform 600, the pedestal 632 that comprises a catoptron 631 and fixing catoptron, this pedestal 632 are offered a pilot hole 633 and are used for cooperating external driver device (figure does not show).This input media 610 is perpendicular to stationary platform 600, and with catoptron 631 in angle of 45 degrees, these a plurality of output units 620 are around 630 one-tenth radial arrangement of reflection unit.By external driver device, alternative rotary reflection device 630 makes input beam from 621 outputs of different output optical fibres.Because light path tool reversibility, this photoswitch also can select to make input light from the input of one of many output optical fibres 621, and transfer to input media 610.

But each output unit 620 of this existing photoswitch is discrete each other, makes that the complex structure of photoswitch is huge, and the adjustment process of input media 610 and a plurality of output unit 620 is very various.Secondly, because distance is restricted between input media 610 and a plurality of output unit 620, make the number that can not expand output unit 620 in a large number, and degree of accuracy has relatively high expectations, be difficult to adjustment, loss is bigger.Once more, this photoswitch can't expand the number of input media 610, just can't realize that also the input beam selectivity transfers to one of many output units from one of many input medias.

[summary of the invention]

The purpose of this utility model is to provide a kind of compact conformation can realize the photoswitch that multi-pass switches.

The purpose of this utility model is achieved in that provides a kind of photoswitch, and it comprises an input media, an output unit, an optical path switching device and a drive unit, and this optical path switching device is to place between input media and the output unit.This input media is identical with the output unit structure, includes the optical fiber contact pins of a built-in evenly distributed multifiber, and this optical fiber contact pins includes an axis, multifiber be uniformly distributed in this axis around.This optical path switching device comprises at least two lens arras, this drive unit comprises at least two oscillating decks, in order to this at least two lens arra of difference fixing, this drive unit drives this at least two oscillating decks swing, this at least two lens arra is had respectively in the light path of a certain lenses between input media and output unit, thereby selectivity transfer to a specific output optical fibre with input beam from an input optical fibre.

Compared with prior art, the utlity model has following advantage: this photoswitch adopts many optical fiber contact pins fixing I/O optical fiber, and utilize oscillating deck replace different lens in light path with switching-over light path, make that this optical switch construction is compacter, and can realize that multi-pass selects.

[description of drawings]

Fig. 1 is the stereographic map of existing photoswitch.

Fig. 2 is the stereographic map of the utility model photoswitch.

Fig. 3 is the sectional view of Fig. 2 along the III-III direction.

Fig. 4 is the sectional view of Fig. 2 along the IV-IV direction.

Fig. 5 is the right view of the input media of the utility model photoswitch.

Fig. 6 and Fig. 7 are the light path synoptic diagram of the utility model photoswitch.

[embodiment]

Seeing also Fig. 2, is the stereographic map of the utility model photoswitch.This photoswitch 10 comprises the input media 100 of many input optical fibres of a tool 110, output unit 200, an optical path switching device 300 and a drive unit 400 of many output optical fibres of a tool 210.This photoswitch 10 further comprises a base 500 in order to the fixing said apparatus, and it comprises a substrate 510.

Please consult Fig. 3 to Fig. 5 together; this input media 100 is fixed in a location-plate 520 from substrate 510 extensions; it comprises the optical fiber contact pins 120 of built-in five input optical fibres 110; these five input optical fibres 110 comprise the naked fine part (not indicating) of tool clad section (not indicating) and no covering; this optical fiber contact pins 120 roughly becomes cylindric; it comprises a holding parts 150; one axis 121 and a sleeve 122; this holding parts 150 is used for the tool clad section (indicate) of these five input optical fibres 110 of fixing; on the face of cylinder of this axis 121 (not indicating), evenly offer five V-type grooves 123; being used for locating the naked fine of these five input optical fibres 110 partly (indicates) and lives admittedly by viscose glue; so that five input optical fibres 110 be uniformly distributed in axis 121 around, sleeve 122 is used for protecting optical fiber 110 and makes this optical fiber contact pins 120 be convenient to cooperate with other elements installation.This optical fiber contact pins 120 is immobilizated in the quartz socket tube 130, for further protecting this input media 100, a sheathed metal sleeve 140 outside quartz socket tube 130.

This output unit 200 is identical with the structure of input media 100, the optical fiber contact pins 220 that comprises built-in five output optical fibres 210, this optical fiber contact pins 220 comprises a holding parts 250, an axis 221 and a sleeve 222, and these five output optical fibres 210 are fixed in the V-type groove 223.This output unit 200 is fixed in a location-plate 530 from substrate 510 extensions.Be not described in detail in this.

This optical path switching device 300 comprises one first lens arra 310 and one second lens arra 320 between input media 100 and output unit 200.Each lens all has the inclined-plane of an aspheric curve and a special angle.Under the driving of drive unit 400, wherein lens of this first lens arra 310 are arranged in light path, in order to will being the parallel beam of specific direction from the light beam deviation of input media 100, transfer to a wherein certain lenses of second lens arra 320 that is arranged in light path equally then, make this parallel beam that the particular fiber 210 of output unit 200 take place to transfer to after deviation also focuses on again.

This drive unit 400 comprises first drive link 410, first oscillating deck 420 that cooperates first lens arra 310 and second drive link 430, second oscillating deck 440 that cooperates second lens arra 320.This first drive link 410 roughly becomes cylindric, one end (not indicating) is immobilizated in a pilot hole 550 of a fixed block 540, and cooperate with an external control device (figure do not show), this fixed block 540 makes from substrate 510 extensions and forms, the other end of this first drive link 410 (not indicating) then links to each other with first oscillating deck 420, this first oscillating deck 420 can be in a groove 560 of substrate 510 serves as the axle swing with first drive link 410, it offers five mounting holes of arranging along camber line 421 at the other end of relative first drive link 410, in order to accommodate this first lens arra 310 of Gu Na.This first drive link 410 externally control device drives down, make this first oscillating deck, 420 swings, thereby a certain lenses that makes first lens arra 310 is in the light path between input media 100 and the output unit 200, and then will be the parallel beam of specific direction from the light beam deviation of input media 100, transfer to second lens arra 320 then.

The structure of this second drive link 430 and second oscillating deck 440 is identical with the structure of first drive link 410 and first oscillating deck 420, under externally control device drives, lens that drive second lens arra 320 are arranged in light path, thereby make from the light beam generation deviation of first lens arra 310 and transfer to the specific output optical fibre 210 of output unit 200 after focusing on.

During assembling, at first drive unit 400 is installed at base 500, fixing behind the relative position of adjustment input media 100 and output unit 200 again, assemble first lens arra 310 and second lens arra 320 subsequently successively, detect the optical property of each passage at last, if the result shows the intact then position of fixing each device of performance.

Please cooperate and consult Fig. 6, be the light path synoptic diagram of the utility model photoswitch.Drive unit 400 drives oscillating deck 420,440 swings, make wherein lens 311 of first lens arra 310 and wherein lens 321 of second lens arra 320 be arranged in light path, from many input optical fibres 110 wherein the light beam of an input optical fibre 111 be refracted as parallel beam through the aspheric curve of lens 311 (indicating), this parallel beam be the parallel beam that transmits along specific direction through end face (the indicating) deviation of the tool special angle of lens 311 again, be incident to lens 321 then, deviation takes place through the end face (not indicating) of lens 321 tool special angles in its transmission direction, after the aspheric curve of lens 321 (not indicating) converges to specific output optical fibre 211.Please consult Fig. 7 together,, make another lens 322 of second lens arra 320 be arranged in light path, thereby make light beam in lens 322, change the deviation direction, focus to another output optical fibre 212 by 440 swings of drive unit 400 control oscillating decks.Equally,, can make the other lenses of first lens arra 310 place light path, thereby be incident to output unit 200 after making light beam generation deviation from different input optical fibres 110 by 420 swings of drive unit 400 control oscillating decks.Therefore, this photoswitch 10 can be realized the conducting between different input optical fibres 110 and the output optical fibre 210.

Claims (10)

1. photoswitch, it comprises an input media, one output unit, one optical path switching device and a drive unit, this optical path switching device is to place between input media and the output unit, it is characterized in that this input media comprises the contact pin of many input optical fibres of tool, this output unit comprises the contact pin of many output optical fibres of tool, the contact pin of this input media and output unit comprises an axis respectively, many input optical fibres and output optical fibre be uniformly distributed in this axis around, this photoelectric conversion device comprises at least two lens arras, this drive unit comprises at least two oscillating decks, in order to this at least two lens arra of difference fixing, this drive unit drives this at least two oscillating decks swing, this at least two lens arra is had respectively in the light path of a certain lenses between input media and output unit, thereby selectivity transfer to a specific output optical fibre with input beam from an input optical fibre.

2. photoswitch as claimed in claim 1, the axis that it is characterized in that the input media contact pin is cylindrical, and its surface offers a plurality of V-type grooves, and input optical fibre places this V-type groove and fixes by viscose glue.

3. photoswitch as claimed in claim 1, the axis that it is characterized in that the output unit contact pin is cylindrical, and its surface offers a plurality of V-type grooves, and output optical fibre places this V-type groove and fixes by viscose glue.

4. photoswitch as claimed in claim 1 is characterized in that wherein an end of each lens all has an aspheric curve.

5. photoswitch as claimed in claim 4 is characterized in that a end that wherein each lens is relative with aspheric curve all has the inclined-plane of a special angle.

6. photoswitch as claimed in claim 1 is characterized in that this drive unit comprises at least two drive links, a be connected end of oscillating deck of drive link.

7. photoswitch as claimed in claim 6 is characterized in that the other end of this oscillating deck is offered a plurality of mounting holes of taking in respective lens.

8. photoswitch as claimed in claim 7 is characterized in that this oscillating deck can be the axle swing by drive link.

9. photoswitch as claimed in claim 1 is characterized in that it further comprises a base, and input media, output unit and drive unit all are installed on the base.

10. photoswitch as claimed in claim 9 is characterized in that this base has a substrate, offers a groove on the substrate, and oscillating deck can be swung in groove.

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