CN2546894Y

CN2546894Y - Mechanical photoswitch

Info

Publication number: CN2546894Y
Application number: CN02226545U
Authority: CN
Inventors: 周明宝
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2002-03-30
Filing date: 2002-03-30
Publication date: 2003-04-23
Anticipated expiration: 2012-03-30

Abstract

The utility model relates to a mechanical optical switch, which comprises an input end, an output end, an optical path switch device and a drive device, wherein, the input end and the output end have same structure and respectively comprise a plurality of optical fibers and an optical fiber insertion pin, the optical fiber insertion pin accommodates the said optical fibers. The optical path switch device is arranged between the input end and the output end and comprises two lens arrays. The utility model comprises two leans arrays, wherein the two lens arrays respectively comprise a plurality of different lens. The driving device drives lens array to perform flat movement so that different lens combination is arranged in the optical path between the input end and the output end to realize the switch of optical path, and the light beam inputted from one optical fiber of the input end is outputted by specific output optical fiber.

Description

Mechanical optical switch

[technical field]

The utility model relates to a kind of photoswitch, refers to a kind of mechanical optical switch especially, and this photoswitch utilizes the conversion of different combination of lensess realization light paths in the light path.

[background technology]

Photoswitch is a kind of various signal paths in optical transmission line or the integrated optical circuit to be changed optical passive component with logical operation mutually, it can be used in optical fiber telecommunications system, fiber optic network, optical fiber measurement system and the optical fiber sensing system, playing the light path conversion, is indispensable critical elements in the optical communication field.

According to the principle of work of photoswitch, it can be divided into non-mechanical optical switch and mechanical optical switch two big classes.Mechanical optical switch utilization machinery, electromagnetic mode etc. are moved optical fiber or optical element, thereby realize the switching of light beam between different output ports.Wherein, moving fiber type photoswitch is realized the switching of light path by moving fiber, but because of fibre diameter is little, occurs bending and deformation easily in the moving process, and it is bigger to cause inserting loss, influences optical signal transmission.The input end fiber and the output terminal optical fiber of mobile optical element type photoswitch maintain static, the switching of the mobile realization light path by optical element, it is lower that this photoswitch inserts loss, isolation is higher, and not being subjected to the influence of wavelength and polarization, is present comparatively a kind of mechanical optical switch of widespread usage.

Please refer to Fig. 1, it is a United States Patent (USP) the 5th, 420, a mobile optical element type photoswitch that is disclosed for No. 946.This photoswitch comprises an input end 610, a reflection unit 620 and a plurality of output terminal 600.Wherein input end 610 comprises an input optical fibre 611 and a GRIN Lens 612, above-mentioned a plurality of output terminal 600 also comprises an output optical fibre 601 and a GRIN Lens 602 respectively, reflection unit 620 comprises that a substrate 621, is located at the catoptron 622 of substrate, and this catoptron 622 is with through the light beam of GRIN Lens 612 collimations in angle of 45 degrees.These substrate 621 bottoms have one to cooperate to drive the hole 623 of these reflection unit 620 rotations with the connecting rod of driving mechanism (figure does not show), the central shaft conllinear of this hole 623 and GRIN Lens 612, and this reflection unit 620 can this central shaft be the axle rotation, these a plurality of output terminals 600 are roughly circular to be arranged in around the reflection unit 620, by external driver device (figure does not show), alternative rotary reflection device 620 makes input beam from 601 outputs of different output optical fibres.

Yet, this optical switch construction complexity, each output terminal 600 palpus accurate distribution is around input end 610, during the light path conversion degree of accuracy of reflection unit 620 anglecs of rotation is had relatively high expectations, be difficult for realizing the accurate aligning output of light beam, and, be difficult to develop to miniaturization owing to each element dispersed arrangement; Because of each output unit 600 comprises an output optical fibre 601 and a GRIN Lens 602 respectively, make that this photoswitch cost is higher, the insertion loss is big and switching speed is low again.

[utility model content]

The purpose of this utility model is to provide a kind of mechanical optical switch, and this mechanical optical switch switching speed is higher, inserts the low and compact conformation of loss, processing procedure is simple, cost is low.

The purpose of this utility model is achieved in that provides a kind of mechanical optical switch, and it comprises an input end, an output terminal, an optical path switching device and a drive unit.Wherein, this input end is identical with output end structure, includes a multifiber and an optical fiber contact pins, and this optical fiber contact pins is accommodated the above-mentioned multifiber of fixing.This optical path switching device comprises two lens arras between input end and output terminal, this two lens arra comprises a plurality of lens respectively.This drive unit drives the lens arra translation so that different combination of lenses places light path between input end and the output terminal to realize the switching of light path, makes light beam from the input of one of input end input optical fibre in specific output optical fibre output.

Compared with prior art, the utlity model has following advantage: because of photoswitch of the present utility model passes through two optical fiber contact pins many input optical fibres of fixing and Duo Gen output optical fibre respectively, and two lens arras can be realized collimation or focusing function when the deviation light beam, make input end and output terminal need not adopt collimation lens in addition, thereby make the photoswitch compact overall structure, be easy to realize miniaturization, and can reduce the production cost of photoswitch.Simultaneously, owing to can utilize the processing procedure of two optical fiber contact pins to realize the accurate aligning of input optical fibre and output optical fibre, thus can reduce accent than process.

[description of drawings]

Fig. 1 is the stereographic map of existing machinery formula photoswitch.

Fig. 2 is the stereographic map of the utility model mechanical optical switch.

Fig. 3 is the sectional view of the utility model mechanical optical switch.

Fig. 4 is another sectional view of the utility model mechanical optical switch.

Fig. 5 is the light path synoptic diagram of the utility model mechanical optical switch.

Fig. 6 is another light path synoptic diagram of the utility model mechanical optical switch.

[embodiment]

Please refer to Fig. 2, the utility model mechanical optical switch comprises an input end 100, an output terminal 200, an optical path switching device 300 and a drive unit 400.Wherein, input end 100 and output terminal 200 comprise many input optical fibres 110, many output optical fibres 210 respectively, and this optical path switching device 300 is between input end 100 and output terminal 200.This drive unit 400 drives optical path switching device 300, so that light signal transfers to one of many output optical fibres 210 from one of many input optical fibres 110.This photoswitch further comprises the base of a fixing said apparatus.

Please refer to Fig. 3, input end 100 comprises many input optical fibres 110, first optical fiber contact pins 120, inner sleeve 130 and outer tube 140.These many input optical fibres 110 in order to input optical signal to this mechanical optical switch.This first optical fiber contact pins 120 is accommodated these many input optical fibres 110 of fixing, the one end grinds to form the inclined-plane 150 of 6 to 8 degree to improve return loss, these first optical fiber contact pins, 120 inside are provided with a through hole 160, this through hole 160 is offered a tapered opening 170 near input end, many input optical fibres 110 can be interspersed in the through hole 160 of first optical fiber contact pins 120 by this tapered opening 170, and the end face of many input optical fibres 110 (indicate) and the inclined-plane 150 of first optical fiber contact pins 120 flush.These inner sleeve 130 sheathed first optical fiber contact pins 120, this outer tube 140 is sheathed on outside the inner sleeve 130, in order to accommodate this input end 100 of protection.

The structure of the structure of output terminal 200 and input end 100 is basic identical, and it comprises many output optical fibres 210, second optical fiber contact pins 220, inner sleeve 230 and outer tube 240.

Optical path switching device 300 is between input end 100 and output terminal 200, comprise first lens arra 310 and second lens arra 320, this first lens arra 310 and second lens arra 320 include a plurality of lens, and in the present embodiment, these a plurality of lens are the die casting lens.Yet, also can adopt the lens of other tool alignment function to substitute these die casting lens to realize the function of light path conversion.First lens arra 310 with the Beam Transformation of input end 100 input be one along the directional light of specific direction transmission to export second lens arra 320 to.A plurality of lens of this first lens arra 310 roughly become cylindric, and itself and first optical fiber contact pins, 120 opposing end faces 3101 are non-spherical structure, and other end 3102 is ground into the inclined-plane that the inclination angle differs in size.Second lens arra 320 makes to focus on behind the transmission direction generation deviation of the directional light of first lens arra 310 output and exports output terminal 200 to.A plurality of lens of this second lens arra 320 roughly become cylindric and second optical fiber contact pins, 220 opposing end faces 3201 are non-spherical structure, and other end 3202 is ground into the inclined-plane that the inclination angle differs in size.

Please referring again to Fig. 2, this optical path switching device 300 further comprises the first lens holding board 301 and the second lens holding board 302, this first lens holding board 301 comprises a plurality of cylindrical mounting holes 305, be used for installing and fixing first lens arra 310, this first lens holding board 301 also comprises a slide block 303, the cross section of this slide block 303 is trapezoidal, and the base that is connected with lens holding board 301 (not indicating) is shorter.The structure of this second lens holding board 302 is identical with the structure of the first lens holding board 301, also comprises a plurality of mounting holes 304 that are used for installing second lens arra 320.

Drive unit 400 comprises two fixing pieces 410 and four connecting links 420.Connecting link 420 1 ends are immobilizated in this fixing piece 410, and link to each other respectively with external control device (figure does not show), the other end then connects the first and second lens holding boards 301,302 respectively and moves to drive this first and second lens holding board 301,302, thus make first and second lens arras 310,320 have respectively a certain lenses between input end 100 and output terminal 200 with the conversion light path.

Base 500 comprises a base plate 510, two detent mechanisms 520 and two fixators 530.The top relative position of this two detent mechanism 520 is offered one respectively and is used for installing the mounting hole (not indicating) of aiming at input end 100 and output terminal 200.This two fixator 530 is between two detent mechanisms 520, equal tool one chute 531 (please refer to Fig. 4) of one side, this chute 531 matches with the slide block 303 of the first and second lens holding boards 301,302, realizes the parallel mobile of the first and second lens holding boards 301,302 under the effect of drive unit 400.

Please cooperate with reference to Fig. 2 and Fig. 5, drive unit 400 drives 301,302 translations of the first and second lens holding boards, make lens 311 of first lens arra 310 and lens 321 of second lens arra 320 place light path, change one behind the light beam scioptics 311 from input optical fibre 111 into along the directional light 3 of specific direction transmission and be incident to lens 321, these lens 321 make these light beam 3 transmission direction generation deviations and focus on and export specific output optical fibre 211 to.Please cooperate with reference to Fig. 6, the translation by the drive unit 400 controls second lens holding board 302 makes another lens 322 of second lens arra 320 be arranged in light path, thereby makes light beam 3 focus on another particular fiber 212 that exports output optical fibre 210 to.Be appreciated that by drive unit 400 to drive 301 translations of the first lens holding board, make other lens of first lens arra 310 be arranged in light path, can make from the light beam generation deviation of different input optical fibres 110 and be focused into to be incident upon in the output optical fibre 210.Therefore, this mechanical optical switch can be realized the conducting of different input optical fibres 110 and output optical fibre 210.

Claims

1. mechanical optical switch, comprise an input end, an output terminal, an optical path switching device and a drive unit, it is characterized in that: this input end and output terminal include an optical fiber contact pins with multifiber, this optical path switching device is between input end and output terminal, comprise that two have the lens arra of a plurality of lens, this drive unit drives two lens arra translations so that this two lens arra has a certain lenses to place light path between input end and the output terminal to realize the switching of light path respectively.

2. mechanical optical switch as claimed in claim 1 is characterized in that: this optical path switching device further comprises the two lens holding boards that this two lens arra is installed.

3. mechanical optical switch as claimed in claim 2 is characterized in that: this two lens holding board is all offered the mounting hole of a plurality of installation lens, and all has a slide block.

4. mechanical optical switch as claimed in claim 1 is characterized in that: this drive unit further comprises in order to connect four connecting links of optical path switching device.

5. mechanical optical switch as claimed in claim 1 is characterized in that: it further comprises a base in order to fixing input end, output terminal, optical path switching device and drive unit.

6. mechanical optical switch as claimed in claim 1 is characterized in that: these a plurality of lens comprise at least one die casting lens.

7. mechanical optical switch as claimed in claim 6 is characterized in that: this at least one die casting lens one end face is the dip plane, and the other end is a non-spherical structure.

8. mechanical optical switch as claimed in claim 1 is characterized in that: the optical fiber contact pins of this input end and output terminal all offers one in order to hold the through hole of multifiber.

9. mechanical optical switch as claimed in claim 1 is characterized in that: the arrangement that is in line of a plurality of lens of this two lens arra.