CN2560959Y

CN2560959Y - Mechanical photoswitch

Info

Publication number: CN2560959Y
Application number: CN 02227289
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: 2002-04-27
Filing date: 2002-04-27
Publication date: 2003-07-16
Anticipated expiration: 2012-04-27

Abstract

The utility model provides a mechanical optical switch, which comprises an input terminal, an output terminal, an optical path switch device and a driving device. The input terminal comprises a plurality of input fibers, a fixed multi-fibers needle for input fibers. The output terminal comprises a plurality of output fibers and a fixed multi-fibers needle for output fibers. The optical path switch device is arranged between the input terminal and the output terminal, which comprises a plurality of lenses and two retaining plates for the lenses. The driving device drives the optical path switch parallel moving, in order to arrange different lenses on the optical path between the input terminal and the output terminal and realize the optical path switch.

Description

Mechanical optical switch

[technical field]

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

[background technology]

Photoswitch is a kind of many signal paths in optical transmission line or the integrated optical circuit to be changed and the device of 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, play the light path conversion, it is an indispensable critical elements in the optical communication field.

According to the principle of work of photoswitch, it can be divided into on-mechanical type photoswitch and mechanical type photoswitch two big classes.Wherein, the mechanical type photoswitch is to utilize modes such as machinery, electromagnetism that optical fiber or optical element are moved, thereby realizes the switching of light beam between different output terminals.This type of photoswitch insertion loss is low, isolation is high, is present most widely used photoswitch.

See also Fig. 1, United States Patent (USP) the 4th, 146 discloses a kind of moving fiber type photoswitch No. 856.This photoswitch comprises a sleeve pipe 10, two magnetic conduction shell fragments 111 and 112, three support components 121 and 122 and 123, three optical fiber 131 and 132 and 133.This magnetic conduction shell fragment 111,112 pass and are fixed in two ends (not indicating) of sleeve pipe 10 respectively, and this two magnetic conductions shell fragment 111, overlap mutually 112 ends (not indicating) that are positioned at sleeve pipe 10, end and end face (not indicating) that support component 121 is fixed in magnetic conduction shell fragment 112 flush with the end of magnetic conduction shell fragment 112, its inside has a through hole 124, support component 122 is fixed in the ad-hoc location of the inner tubal wall (not indicating) of sleeve pipe 10, it has a through hole 125, the end that support component 123 is positioned at magnetic conduction shell fragment 111 is adjacent to the position of support component 121, it also has a through hole 126, three optical fiber 131,132 and 133 end and one end (not the indicating) of passing sleeve pipe 10 are individually fixed in support component 121,122 and 123 through hole 124, in 125 and 126.When two magnetic conduction shell fragments, 111,112 tools difference magnetic, two magnetic conduction shell fragments 111,112 mutually against, the optical fiber 131,133 that is arranged in the through hole 124,126 of support component 121,123 is aimed at mutually, when two magnetic conduction shell fragments, 111,112 tool same magnetic, two magnetic conduction shell fragments 111,112 repel mutually, cause support component 121 against tube wall, be arranged in the optical fiber 131,132 of the through hole 124,125 of support component 121,122 this moment and aim at mutually.This photoswitch can be realized the switching of light path, and still, it, occurs aligning mistake easily in the frequent switch moving process, and cause the light signal loss bigger because fibre diameter is little by the switching of moving fiber 131 realization light paths, influences the optical signal transmission quality.

See also Fig. 2, United States Patent (USP) the 5th, 420 discloses a kind of mobile optical element type photoswitch No. 946.This photoswitch comprises an input end 14, a reflection unit 15 and a plurality of output terminal 16.Wherein, input end 14 comprises an input optical fibre 141 and a gradual index lens 142, and this gradual index lens 142 is to be used for beam collimation with input optical fibre 141 input to reflection unit 15.Reflection unit 15 comprises that a substrate 151, is located at the catoptron 152 of substrate 151, and it and through the light beam of gradual index lens 142 collimations in angle of 45 degrees.These substrate 151 bottoms have a hole 153, it can cooperate with the connecting rod (figure does not show) of driving mechanism, rotate to drive this reflection unit 15, the input beam of input optical fibre 141 can be coupled to output terminal 16 when reflection unit 15 is rotated, the central shaft conllinear of the axis in this hole 153 and gradual index lens 142, and this reflection unit 15 can this central shaft be the axle rotation.A plurality of output terminals 16 comprise output optical fibre 161 respectively, and each optical fiber 161 matches this a plurality of output terminals 16 edges specified circumference stationary arrangement coaxial with gradual index lens 142 central shafts respectively with a gradual index lens 162.

The light beam of input optical fibre 141 inputs inputs to catoptron 152 through gradual index lens 142 collimations, by being coupled to different output terminals 16 after catoptron 152 reflections that rotate to diverse location, realizes the purpose that light path is switched.But, this optical switch construction complexity, each output terminal 16 necessary accurate distribution is around input end, the accuracy requirement height of reflection unit 15 anglecs of rotation when light path is switched, and its each output terminal 16 all has gradual index lens 162, make that this photoswitch cost is higher, also be difficult to simultaneously, and can not realize the function of many inputs many outputs to the miniaturization development.

[summary of the invention]

The purpose of this utility model is to provide a kind of mechanical optical switch, its compact conformation, and processing procedure is simple and cost is low.

The purpose of this utility model is achieved in that provides a kind of mechanical optical switch to comprise an input end, an output terminal, a light path switching device and a drive unit.This input end comprises many optical fiber contact pins of many input optical fibres and a fixing input optical fibre.This output terminal comprises many optical fiber contact pins of many output optical fibres and a fixing output optical fibre.This light path switching device is between input end and output terminal, and it comprises the holding board of a plurality of lens and two these a plurality of lens of fixing, and each lens all has an aspheric curve.This drive unit drives the light path switching device translation so that different lens place the light path between input end and the output terminal, realizes the switching of light path.

Compare with existing machinery formula photoswitch, the utility model adopts the fixing of optical fiber contact pins more than a multifiber, and realize collimation and light path handoff functionality by two lens arras, its compact conformation, processing procedure be simple, be easy to realize miniaturization, simultaneously the production cost of photoswitch can be reduced, and switching-over light path between many input ends and the many output terminals can be implemented in.

[description of drawings]

Fig. 1 is the diagrammatic cross-section of existing photoswitch.

Fig. 2 is the schematic perspective view of another existing photoswitch.

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

Fig. 4 is the diagrammatic cross-section of the utility model mechanical optical switch.

Fig. 5 is another diagrammatic cross-section of the utility model mechanical optical switch.

Fig. 6 A is many optical fiber contact pins section enlarged diagram of the utility model mechanical optical switch.

Fig. 6 B is another section enlarged diagram of many optical fiber contact pins of the utility model mechanical optical switch.

Fig. 7 A is the part light path synoptic diagram of the utility model mechanical optical switch.

Fig. 7 B is another part light path synoptic diagram of the utility model mechanical optical switch.

[embodiment]

See also Fig. 3 to Fig. 6 B, the utility model mechanical optical switch comprises an input end 21, an output terminal 22, a light path switching device 23, a holder 25, a base 26 and a drive unit 27.

Input end 21 comprises many optical fiber contact pins 212, inner sleeve 213 and the outer tube 214 of many input optical fibres 211, fixing input optical fibre 211.This multifiber 211 in order to input optical signal to this mechanical optical switch.These many optical fiber contact pins 212 comprise an inner core 2122, an overcoat 2123 and a fixing end 2121, and this multifiber 211 is uniformly distributed between inner core 2122 and the overcoat 2123, and is anchored on inner core 2122.For reaching preferable fastening and locating effect, can make the equally distributed groove 2125 of multiple tracks (as V-type groove etc.) on inner core 2122 surfaces, in order to the end of accurate location multifiber 211.These inner sleeve 213 sheathed these many optical fiber contact pins 212 are in order to fastening many optical fiber contact pins 212.This outer tube 214 is sheathed on outside the inner sleeve 213, in order to accommodate this input end 21 of protection.

Output terminal 22 comprises many optical fiber contact pins 222, inner sleeve 223 and the outer tube 224 of many output optical fibres 221, fixing output optical fibre 221, and its structure and input end 21 are basic identical, are not described in detail in this.

Light path switching device 23 comprises two lens arras 231,232, and it is by a plurality of lens formations and between input end 21 and output terminal 22.Wherein, these a plurality of lens all have the optics end face 50 of a special angle, in order to change the direction of propagation by the light beam of this optics end face 50, by the different combination of lensess change input ends 21 of two lens arras and the light path between the output terminal 22, and make the arbitrary optical fiber 221 of the optical signal transmission of input end 21 any optical fiber 211 inputs to output terminal 22.Simultaneously, each all further comprises an aspheric curve 70 these a plurality of lens, and it is used to collimation or converges many incident or the outgoing beams that input or output optical fiber 211 (221).

Lens holder 25 comprises first lens mount 251 and second lens mount 252, and this first lens mount 251 and second lens mount 252 include a plurality of mounting holes 253 and a slide block 254.These a plurality of mounting holes 253 are positioned at the top of lens holder 25 in order to install and fix

lens arra

231 and 232, and these slide block 254 cross sections are trapezoidal, and the base of contiguous lens holder 25 (not indicating) is shorter.

Base 26 comprises a body 260,2 first mount pads 261 and 2 second mount pads 262.This 2 first mount pad 261 be arranged in parallel, and its top relative position is equipped with a mounting hole (indicating) so that aligning input end 21 and output terminal 22 to be installed.This 2 second mount pad 262 is parallel to first mount pad 261, and a gathering sill 2621 is offered in its opposite flank, and the cross section of the slide block 254 of the cross section of this gathering sill 2621 and lens holder 25 is identical, to match with the slide block 254 of lens holder 25.

Drive unit 27 comprises two driving arrangements 271 and four connecting links 272, four connecting links 272 are connected to the both sides and two driving arrangements 271 of first lens mount 251 and second lens mount 252, to drive gathering sill 2621 slips of first lens mount 251 and second lens mount 252 along second mount pad 262, thereby make lens arra 231 place light path with 232 different combination of lensess, with switching-over light path between different I/O optical fiber.

See also Fig. 7 A, the light signal of an optical fiber 2111 inputs of input optical fibre 211, aspheric curve 70 through lens 2311 of lens arra 231 is refracted as parallel beam 31, because of the end of optical fiber not on the optical axis of this

lens arra

231 and 232, so parallel beam 31 becomes a small angle with optical axis, the optics end face 50 of the special angle of scioptics 2311 is the parallel beam 30 parallel with optical axis with the refraction of optical beam, parallel beam 30 is refracted as the parallel beam 41 that becomes a specific minute angle with optical axis once more through the optics end face 50 of the special angle of lens 2321 of lens arra 232, and the parallel beam 41 of specific direction reflects post-concentrations to output optical fibre 2211 through the aspheric curve 70 of lens 2321.Another lens 2322 that drive lens arra 232 by drive unit place light path, see also Fig. 7 B, parallel beam 30 is refracted as the parallel beam 42 that becomes another specific minute angle with optical axis through the optics end face 50 of the special angle of lens 2322, and the parallel beam 42 of this specific direction reflects post-concentrations to another root output optical fibre 2212 through the aspheric curve 70 of lens 2322.

Be appreciated that the different lens that drive lens arra 232 by drive unit 27 place light path, can transfer to the input optical signal of optical fiber 211 the different output optical fibres of output terminal 22.Equally, the different lens that drive lens arra 231 by drive unit 27 place light path, and the optical signal transmission that different input optical fibres can be imported is to the output optical fibre of output terminal 22.So this mechanical optical switch can input to the light signal of the arbitrary input optical fibres input of input end 21 arbitrary output optical fibre of output terminal 22, because of light path reversible, so but its also reverse transfer.

Claims

1. mechanical optical switch, it comprises: an input end, one output terminal and a drive unit, it is characterized in that this input end comprises many optical fiber contact pins of many input optical fibres and these many input optical fibres of fixing, this output terminal comprises many optical fiber contact pins of many output optical fibres and a fixing input optical fibre, these many optical fiber contact pins further comprise an inner core and an overcoat, these many input or output optical fiber and are uniformly distributed between this inner core and this overcoat, and be anchored on this inner core, this mechanical optical switch further comprises two lens arras, this two lens arra is between input end and output terminal, it comprises a plurality of lens respectively, and this drive unit drives two lens mounts and moves and make the different combination of lensess of two lens arras place light path between input end and the output terminal to realize the switching of light path.

2. mechanical optical switch as claimed in claim 1 is characterized in that this input end further comprises an inner sleeve and an outer tube, and many optical fiber contact pins of sheathed this fixing input optical fibre of this inner sleeve, this outer tube are sheathed on the inner sleeve outside.

3. mechanical optical switch as claimed in claim 1 is characterized in that this output terminal further comprises an inner sleeve and an outer tube, and many optical fiber contact pins of sheathed this fixing input optical fibre of this inner sleeve, this outer tube are sheathed on the inner sleeve outside.

4. mechanical optical switch as claimed in claim 1 is characterized in that these a plurality of lens comprise further that all one inputs or outputs the aspheric curve of light signal in order to collimation.

5. mechanical optical switch as claimed in claim 4 is characterized in that each lens end relative with aspheric curve is the optics end face of a special angle.

6. mechanical optical switch as claimed in claim 1 is characterized in that this mechanical optical switch further comprises a base, and this base comprises 2 first mount pads and 2 second mount pads.

7. mechanical optical switch as claimed in claim 6, it is characterized in that this 2 first mount pad be arranged in parallel and its on have a mounting hole respectively, this 2 second mount pad is between first mount pad and be parallel to the first mount pad setting, and its opposed inside face has a gathering sill respectively.

8. mechanical optical switch as claimed in claim 7, it is characterized in that this mechanical optical switch further comprises a lens holder, this lens holder comprises two lens mounts, it all has a plurality of mounting holes in order to two lens arras to be installed, and this two lens mounts bottom has a slide block, and its cross section is identical with the gathering sill cross section of second mount pad and cooperate with gathering sill.

9. mechanical optical switch as claimed in claim 8 is characterized in that this drive unit further comprises two driving arrangements and four connecting links, and this four connecting link connects two lens mounts and two driving arrangements respectively.

10. mechanical optical switch as claimed in claim 9 is characterized in that two driving arrangements can drive two lens mounts respectively to diverse location by four connecting links.