CN2533482Y

CN2533482Y - Photoswitch device

Info

Publication number: CN2533482Y
Application number: CN 02226024
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: 2002-03-01
Filing date: 2002-03-01
Publication date: 2003-01-29
Anticipated expiration: 2012-03-01

Abstract

A optical switch device comprises an input end, an output end, two prism arrays, and a driving device; wherein, the input end comprises a plurality of input optical fibers, a multi-core optical fiber base pin, and a collimating lens; the multi-core optical fiber base pin accommodates and fixedly hold the plurality of input optical fibers, and the collimating lens is used to collimate the optical signals input by the plurality of input optical fibers; the output end comprises a plurality of output optical fibers, a multi-core optical fiber base pin, and a collimating lens; the multi-core optical fiber base pin accommodates and fixedly hold the plurality of output optical fibers, to which the collimating lens outputs the gathered optical signals; the two prism arrays are arranged between the input end and the output end, and each comprises a plurality of prisms. The driving device drives the prism arrays to make parallel move, which enables different prism combination to be arranged in the light paths between the input end and the output end to realize the switch among the light paths.

Description

Optical switch device

[technical field]

The utility model is about a kind of optical switch device, particularly realizes the optical switch device of light path conversion about a kind of mobile optical element.

[background technology]

Photoswitch is a kind of all signal paths in optical transmission line or the integrated optical circuit to be changed and the optical passive component 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, 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 on-mechanical type photoswitch and mechanical type photoswitch two big classes.Wherein, on-mechanical type photoswitch mainly relies on electrooptical effect, magneto-optic effect, acoustooptic effect and thermal effect to change waveguide index so that light path changes, and its switching time, short, volume was urinated integrated and photoelectricity is integrated in light.But it inserts, and loss is big, isolation is low, and technology is still immature, and manufacturing cost is higher.The mechanical type photoswitch is to utilize machinery, electromagnetic mode etc. that optical fiber or optical element are moved, thereby realizes the switching of light beam between different output ports.This type of photoswitch insertion loss is low, isolation is high, is present most widely used photoswitch.

Prior art as shown in Figure 1, it is a United States Patent (USP) the 4th, 146, a kind of moving fiber type photoswitch that is disclosed for 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 the both ends (not indicating) of sleeve pipe 10 respectively, its end (not indicating) that is positioned at sleeve pipe 10 overlaps, 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 131, 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.Optical fiber 131,133 in the different magnetic 124,126 of two magnetic conduction shell fragments, 111,112 tools 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 the inner tubal wall of support component 121, 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 against sleeve pipe 10.This photoswitch can be realized the switching of light path, but, because of it is the switching of reaching light path by moving fiber 131, and fibre diameter is little, flexural deformation appears easily in the frequent switch moving process, and it does not use the collimation lens collimated light beam, causes the light signal loss bigger, and then influences the optical signal transmission quality.

Another prior art as shown in Figure 2, it is a United States Patent (USP) the 5th, 420, a kind of mobile optical element type photoswitch that is disclosed for 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, this gradual index lens 142 in order to the light beam of collimation 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 itself 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 to drive this reflection unit 15 rotations, the input beam of input optical fibre 112 can be coupled to output terminal 16 when reflection unit 15 is rotated, the central shaft conllinear of 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 with a gradual index lens 162 respectively, and these a plurality of output terminals 16 are along the circumference stationary arrangement coaxial with hole 153 and gradual index lens 142.

The light beam of input optical fibre 141 inputs inputs to catoptron 152 through gradual index lens 142 collimations, can be coupled to different output terminals 16 after catoptron 152 reflections that rotate to diverse location, reaches the purpose that light path is switched.But, this kind 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 a plurality of output terminals 16 include multifiber 161 and gradual index lens 162, make that this photoswitch cost is higher, also be difficult to develop simultaneously to miniaturization.

In view of this, provide a kind of compact conformation, processing procedure is simple, and the photoswitch that cost is low is real to be necessary.

[summary of the invention]

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

For realizing the utility model purpose, the utility model optical switch device comprises an input end, an output terminal, two prisms array and a drive unit.This input end comprises many input optical fibres, a multi-core optical fiber contact pins and collimation lens, and this multi-core optical fiber contact pins is accommodated these many input optical fibres of fixing, and this collimation lens is in order to the light signal of these many input optical fibre inputs of collimation.This output terminal comprises many output optical fibres, a multi-core optical fiber contact pins and collimation lens, and this multi-core optical fiber contact pins is accommodated fixing this many output optical fibres, and this collimation lens is in order to converging light signal these many output optical fibres extremely.This two prisms array is between input end and output terminal, and it comprises a plurality of prisms respectively.This drive unit drives the prism array translation so that the combination of different prism places the switching of the light path realization light path between input end and the output terminal.

Compared to prior art, the utlity model has following advantage: because of photoswitch of the present utility model passes through an optical fiber contact pins fixing multifiber, and this multifiber is shared collimation lens, and compact conformation, processing procedure be simple, be easy to realize miniaturization, can reduce the production cost of photoswitch simultaneously.

[description of drawings]

Fig. 1 is the diagrammatic cross-section of prior art photoswitch.

Fig. 2 is the schematic perspective view of another prior art photoswitch.

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

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

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

Fig. 6 and Fig. 7 are the part light path synoptic diagram of the utility model optical switch device.

[embodiment]

See also Fig. 3, Fig. 4 and Fig. 5, optical switch device of the present utility model comprises an input end 21, an output terminal 22, two

prisms array

23 and 24, a prism holder 25, a base 26 and a drive unit 27.

Input end 21 comprises multifiber 211, multi-core optical fiber contact pins 212, collimation lens 213, inner sleeve 214 and outer tube 215.This multifiber 211 in order to input optical signal to this optical switch device.This multi-core optical fiber contact pins 212 is accommodated this multifiber 211 of fixing, the one end grinds to form the inclined-plane (not indicating) of 6 to 8 degree to improve return loss, inside has a through hole (not indicating), and through hole has tapered opening (not indicating) with respect to the other end on the inclined-plane of multi-core optical fiber contact pins 212, multifiber 211 can be interspersed in the through hole of multi-core optical fiber contact pins 212 by this opening, and the end face of multifiber 211 flushes with the inclined-plane of multi-core optical fiber contact pins 212.Collimation lens 213 is aimed in order to collimate the light beam of many input optical fibres 211 inputs mutually with multi-core optical fiber contact pins 212, and the end face of its contiguous multi-core optical fiber contact pins 212 (not indicating) also grinds to form the inclined-plane of 6 to 8 degree to improve return loss.These inner sleeve 214 sheathed multi-core optical fiber contact pins 212 and collimation lenses 213 are in order to relative positioning multi-core optical fiber contact pins 212 and collimation lens 213.This outer tube 215 is sheathed on outside the inner sleeve 214, in order to accommodate this input end 21 of protection.

Output terminal 22 comprises multifiber 221, multi-core optical fiber contact pins 222, collimation lens 223, inner sleeve 224 and outer tube 225, and its structure and input end 21 are basic identical, are not described in detail in this.

Prism array

23 and 24 constitutes by a plurality of prisms, it is between input end 21 and output terminal 22, by the different prism combination change input ends 21 of two

prisms array

23,24 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 inputs to output terminal 22.

Prism holder 25 comprises first prism table 251 and second prism table 252, and this first prism table 251 and second prism table 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 prism holder 25 in order to install and fix

prism array

23 and 24, and these slide block 254 cross sections are trapezoidal, and the base of adjacent prisms holder 25 (not indicating) is shorter.

Base 26 comprises a body 260, two first mount pads 261, two second mount pads 262.This two 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 two second mount pad 262 is parallel to first mount pad 261 and be arranged in parallel, and a gathering sill 2621 is offered in its opposite flank, and the cross section of this gathering sill 2621 is identical with the cross section of the slide block 254 of prism holder 25, to match with the slide block 254 of prism holder 25.

Drive unit 27 comprises two driving arrangements 271 and four connecting links 272, four connecting links are connected to the both sides and two driving arrangements 271 of first prism table 251 and second prism table 252, slide along the gathering sill 2621 of second mount pad 262 to drive first prism table 251 and second prism table 252, thus

prism array

23 and 24 different prisms are made up place light path with switching-over light path between different I/O optical fiber.

See also Fig. 6, the light signal of one optical fiber, 2111 inputs of input optical fibre 211, be parallel beam 31 through collimation lens 213 collimations, because of the end of optical fiber 2111 not on the optical axis of collimation lens 213, so parallel beam 31 becomes a small angle with optical axis, prism 231 by prism array 23 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 a prism 241 of prism array 24, and the parallel beam 41 of specific direction is assembled to output optical fibre 2211 through collimation lens 223.Another prism 242 that drives prism array 24 by drive unit 27 places light path, see also Fig. 7, parallel beam 30 is refracted as the parallel beam 42 that becomes another specific minute angle with optical axis through prism 242, and the parallel beam 42 of this specific direction is assembled to output optical fibre 2212 through collimation lens 223.

Be appreciated that the different prisms that drive prism array 24 by drive unit 27 place light path the input optical signal of optical fiber 211 can be transferred to the different output optical fibres of output terminal 22.Equally, the different prisms that drive prism arrays 23 by drive unit 27 place the light path can be with the optical signal transmission of the different input optical fibres inputs output optical fibre to output terminal 22.So this optical switch device can input to the light signal of the arbitrary input optical fibres input of input port 21 arbitrary output optical fibre of output port 22, because of light path reversible, so but its also reverse transfer.

Claims

1. optical switch device, it comprises an input end and an output terminal, it is characterized in that: this input end comprises many input optical fibres and a multi-core optical fiber contact pins and collimation lens, this multi-core optical fiber contact pins is accommodated these many input optical fibres of fixing, this collimation lens is in order to collimate the light signal of these many input optical fibre inputs, this output terminal comprises many output optical fibres and a multi-core optical fiber contact pins and collimation lens, this multi-core optical fiber contact pins is accommodated these many output optical fibres of fixing, this collimation lens in order to the converging light signal to these many output optical fibres, in addition, this optical switch device further comprises a two prisms array and a drive unit, wherein this two prisms array is between input end and output terminal, it comprises a plurality of prisms respectively, and the different prisms that this drive unit drives the two prisms array make up the switching that the light path that places between input end and the output terminal realizes light path.

2. optical switch device according to claim 1; it is characterized in that: wherein this input end further comprises an inner sleeve and an outer tube; sheathed multi-core optical fiber contact pins of this inner sleeve and collimation lens, this outer tube are sheathed on the inner sleeve outside to accommodate this input end of protection.

3. optical switch device according to claim 1; it is characterized in that: wherein this output terminal further comprises an inner sleeve and an outer tube; sheathed multi-core optical fiber contact pins of this inner sleeve and collimation lens, this outer tube are sheathed on the inner sleeve outside to accommodate this output terminal of protection.

4. optical switch device according to claim 1 is characterized in that: it further comprises a prism holder, and this prism holder comprises digonous microscope base, all offers a plurality of mounting holes on it so that a plurality of prisms to be installed.

5. optical switch device according to claim 4 is characterized in that: it further comprises a base, and this base comprises two first mount pads and two second mount pads.

6. optical switch device according to claim 5 is characterized in that: wherein this two first mount pad opposing parallel is provided with, and its top all has a through hole so that input end and output terminal to be installed.

7. optical switch device according to claim 5 is characterized in that: wherein this two second mount pad is parallel to the first mount pad setting and between two first mount pads.

8. optical switch device according to claim 7 is characterized in that: wherein two second mount pad opposed inside faces have a gathering sill respectively.

9. optical switch device according to claim 8 is characterized in that: wherein the relative outside of digonous microscope base has a slide block respectively, and its cross section is identical with the gathering sill cross section of second mount pad matches with the gathering sill with second mount pad.

10. optical switch device according to claim 9 is characterized in that: wherein this drive unit further comprises two driving arrangements and four connecting links, and this four connecting link connects digonous microscope base and two driving arrangements respectively.

11. optical switch device according to claim 9 is characterized in that: wherein two driving arrangements can drive digonous microscope base respectively in diverse location by four connecting links.