CN2522883Y - Moving reflector type photoswitch - Google Patents

Abstract

A moving reflective face-typed optical switch comprises an optical input device, an optical output device and an optical path converting device. The optical input/output device comprises a first optical input/output device and a second optical input/output device and each optical input/output device at least comprises a collimator and the optical input/output devices are arranged oppositely. The optical path converting device consists of a movable reflective device and a fixed reflective device. The movable reflective device is provided with two reflective faces which are respectively opposite to the first optical input device and the second optical input device, while the fixed reflective device is provided with at least one reflective face which is paralleled with and arranged oppositely to one of two reflective faces of the movable reflective device. The optical path converting can be realized through the movement of the movable reflective device between a first location and a second location, and two more reflections added mainly through the increase of one reflective face are employed to eliminate the effect caused by the distance between the two reflective faces on the beam collimating, thus lowering the loss of the switch.

Description

Mobile reflecting surface type photoswitch

[technical field]

The utility model is about a kind of photoswitch, and particularly about a kind of mobile reflecting surface type photoswitch, it has movable reflection unit and fixation reflex device, can realize the light path conversion by moving movable reflection unit.

[background technology]

Development along with the optical communication industry, photoswitch is changed device with logical operation as a kind of mutually to all signal paths in optical transmission line or the integrated optical circuit, in optical communication, use more and more widely, can be used for optical fiber telecommunications system, optical fiber network system, optical fiber measurement system and optical fiber sensing system, playing the light path transformation, is one of requisite optical module in the optical communication field.

According to the photoswitch principle of work, it can be divided into mechanical type photoswitch and on-mechanical type photoswitch two big classes.The mechanical type photoswitch is to utilize machinery, electromagnetic mode etc. that optical fiber or optical module are moved, thereby realizes the conversion of light beam between different output ports.Wherein research and develop time moving fiber type photoswitch early and mainly realize the light path conversion by moving fiber, but less because of fibre diameter, flexural deformation appears easily in frequent switch moving process, and cause the light signal loss bigger, influence the optical signal transmission quality.Moving optical assembly type photoswitch is another kind of mechanical type photoswitch, is to utilize electromechanical means to move or the rotary optical assembly, input light is connected with different output ports, thereby realized the light path conversion.It is low that this kind photoswitch inserts loss, generally is not more than 2dB; The isolation height is generally greater than 45dB; And be not subjected to polarization and wavelength affects.The optical module that is applicable to this kind photoswitch has catoptron, lens, prism and shield etc.

Present mobile reflecting surface type photoswitch is a kind of photoswitch comparatively commonly used, be the index path of mobile reflecting surface type photoswitch in the prior art as shown in Figure 1 and Figure 2, this kind photoswitch generally is to utilize to have two removable reflection units 170 immigrations of reflecting surface or shift out light path, makes the light beam of optical input device 130,150 inputs and different light output arrangement 140,160 collimations.

When photoswitch was in first state, reflection unit 170 was directly exported from first light output arrangement 140 by the light beam of first optical input device, 130 inputs not in light path; Light beam by 150 inputs of second optical input device is directly exported from second light output arrangement 160.

When photoswitch is in second state, reflection unit 170 moves into light path, be reflected after first reflecting surface, 171 reflections of device 170 by the light beam of first input media 130 input, through 160 outputs of second light output arrangement, be reflected after second reflecting surface, 172 reflections of device 170 by the light beam of second optical input device 150 input, through 140 outputs of first light output arrangement.

For above-mentioned light path, with regard to geometrical optics, have only above-mentioned two reflectings surface to be positioned at simultaneously on the intersection point of two input light paths, promptly first reflecting surface 171 and second reflecting surface 172 are in the same plane, just can realize ideal and the conversion of light path that loss is less.But according to the existing processes technology, need realize on certain base material because of reflecting coatings or reflecting surface, and this base material must have thickness, this just makes two reflectings surface can not be positioned at simultaneously on the two light path intersection points.So, when reflection unit 170 moved into light paths, state as shown in Figure 3 will appear, and will depart from and can not accurately collimate and enter first light output arrangement 140 by the light beam of second optical input device, 150 inputs, cause the photoswitch loss bigger.Even use the individual reflection face to realize the light path conversion, the light beam that does not plate reflecting surface one side can not make beam collimation enter default output terminal because of need reflection again behind superrefraction equally.Therefore, need a kind of mobile reflecting surface type photoswitch that the influence of two spacing of reflecting plane can be eliminated of design.

[summary of the invention]

The purpose of this utility model is to provide the mobile reflecting surface type photoswitch that a kind of processing procedure is simple, rational in infrastructure, loss is less.

For realizing the utility model purpose, the utility model move reflecting surface type photoswitch comprise two optical input devices, two light output arrangements and place the input and output unit between optical path switching device, this optical path switching device comprises a movable reflection unit and a fixation reflex device, wherein movable reflection unit has two reflectings surface, can between two positions, move, the fixation reflex device has at least one reflecting surface, and parallel and relative with adjacent movable reflection unit reflecting surface.Each light input/output device stationkeeping, wherein first optical input device and first light output arrangement are staggered relatively, and second optical input device and second light output arrangement are staggered relatively.

Compared with prior art, the utlity model has following advantage: because of the utlity model has a movable reflection unit and a fixation reflex device, thereby eliminated prior art because of reflection unit thickness to influence that light path produced, and its manufacture process more easily realizes, in addition only need reflectivity properties because of its movable reflection unit and fixation reflex device, its geometric configuration is unrestricted, so this kind photoswitch cost is lower.

[description of drawings]

Fig. 1 is existing mobile reflecting surface type photoswitch at state light path synoptic diagram for the moment.

Fig. 2 is the existing light path synoptic diagram of mobile reflecting surface type photoswitch when state two.

Fig. 3 is the local enlarged diagram of Fig. 2.

Fig. 4 is the stereographic map of the utility model optical switch device.

Fig. 5 is the light path synoptic diagram of the movable reflection unit of the utility model photoswitch when being positioned at first state.

Fig. 6 is the light path synoptic diagram of the movable reflection unit of the utility model photoswitch when being positioned at second state.

[embodiment]

The utility model moves reflecting surface type photoswitch; as shown in Figure 4; comprise be used to import, first optical input device 30, first light output arrangement 40, second optical input device 50 and second light output arrangement 60 of output beam; and can between two positions, move movable reflection unit 70 and the fixation reflex device 80 that is used to change light path; housing 10 with corresponding protective; be used for fixing the pedestal 20 of each input/output device and fixation reflex device, and the drive unit 90 that has connecting rod 91.

Above-mentioned each light input and output unit 30,40,50,60 insert respective sleeve 32,42,52,62 by optical fiber 31,41,51,61 ends respectively, and form with corresponding collimating apparatus 33,43,53,63 linear collimations.Each input/output device stationkeeping, wherein first optical input device 30 and first light output arrangement 40 are staggered relatively, second optical input device 50 and second light output arrangement 60 are staggered relatively, and the line of the line of the first smooth input/ output device 30,40 and the second smooth input/ output device 50,60 is in a certain angle.

As Fig. 5 and shown in Figure 6, movable reflection unit 70 is done the time spent, can be driven that two positions moves time between first optical input device 30 and second optical input device 50 by the connecting rod 91 that links to each other with drive unit 90, forms first state and second state of this kind photoswitch.Movable reflection unit 70 has first reflecting surface 71 and second reflecting surface 72, and wherein first reflecting surface 71 is positioned at the intersection point place of first optical input device 30 and second optical input device, 50 input beams.Fixation reflex device 80 has at least one the 3rd reflecting surface 81, and it does the time spent, and second reflecting surface 72 that is adjacent in the 3rd reflecting surface 81 and the mobile reflection unit is parallel and relative.Above-mentioned first reflecting surface, 71, the second reflectings surface 72 and the 3rd reflecting surface 81 all can adopt highly reflective material zinc sulphide to be plated to.

Referring again to Fig. 4; the housing 10 that is used to accommodate each part mentioned above removes has the basis that is enough to accommodate each part mentioned above external; the optical fiber 31,41,51 and 61 that extends in the housing in order to protection is all arranged and first input/output device, 30,40 second input/output devices, 50,60 corresponding protectives 12,13,14,15 in four sides of housing 10.

When photoswitch is in first state, as shown in Figure 5, mobile reflection unit 70 is not in light path, then import direct second collimating apparatus 43 that enters first output unit 40 relative that collimates of incident light of first collimating apparatus 33 with it from first optical fiber 31 of first input media 30, and by 41 outputs of second optical fiber; The incident light that imports the 3rd collimating apparatus 53 from the 3rd optical fiber 51 of second input media 50 is collimation the 4th collimating apparatus 63 that enters second output unit 60 relative with it directly, and by 61 outputs of the 4th optical fiber.

When photoswitch is in second state, as shown in Figure 6, the mobile reflection unit 70 that links to each other with connecting rod 91 moves into light path under the drive of drive unit 90, the 3rd reflecting surface 81 of fixation reflex device 80 is parallel and relative with second reflecting surface 72 of movable reflection unit 70 at this moment.The size of fixation reflex device 80 is by 30,40,50,60 angle decisions of each input/output device, its size can not influence the collimation of light path, the light beam that imports first collimating apparatus 33 from first optical fiber 31 of first optical input device 30 is moved first reflecting surface, 71 reflections of reflection unit 70, the 4th collimating apparatus 63 that collimation enters second light output arrangement 60, and by 61 outputs of the 4th optical fiber; The light beam that imports the 3rd collimating apparatus 53 from the 3rd optical fiber 51 of second input media 50 is moved the second reflection coatings, 72 reflections of reflection unit 70, the 3rd reflecting surface 81 through fixation reflex device 80 reflects again, second reflecting surface 72 through mobile reflection unit 70 reflects again, collimate the collimating apparatus 43 that enters first light output arrangement 40 at last, and from 41 outputs of second optical fiber.

Simultaneously, the utility model photoswitch can adopt following steps to make:

Earlier movable reflection unit is inserted light path, adjust first optical input device 30 and second light output arrangement 60 and fixed, make of first reflecting surface 71 reflections of the light beam of first optical input device, 30 inputs through movable reflection unit 70, and through the 60 collimation outputs of second light output arrangement;

Shift out movable reflection unit 70, adjust the position of first light output arrangement 40 and second optical input device 50, the light beam of first optical input device, 30 inputs can directly be exported from first light output arrangement, 40 collimations, and the light beam of second optical input device, 50 inputs can be directly from the 60 collimation outputs of second light output arrangement;

Again movable reflection unit 70 is moved into light path, insert the origin-location, adjust fixation reflex device 80 positions, the light beam that makes the input of second optical input device 50 is exported through first light output arrangement collimation after the 3rd reflecting surface triple reflection of second reflecting surface 72 of movable reflection unit 70 and fixation reflex device 80.

In addition, the utility model photoswitch also can have other to change design.As: change fixation reflex device 80 and be movable fixture, the 3rd reflecting surface 81 of fixation reflex device 80 and first reflecting surface 71 of movable reflection unit 70, second reflecting surface 72 are on same substrate, move into or shift out light path simultaneously, eliminate the purpose that first reflecting surface and second spacing of reflecting plane influence light path realize to utilize many reflectings surface.

The manufacture process of the utility model photoswitch more easily realizes, and wherein movable reflection unit and fixation reflex device only need reflectivity properties, and its geometric configuration is unrestricted, so this kind photoswitch cost is lower.

Claims (10)

1. mobile reflecting surface type photoswitch, it comprises at least one optical input device that is used for input optical signal to photoswitch, with at least one light output arrangement that is used for from photoswitch output light signal, it is characterized in that: this moves reflecting surface type photoswitch and further comprises at least one reflection unit, it includes first reflecting surface, second reflecting surface and the 3rd reflecting surface, when each reflecting surface is in an ad-hoc location, light signal imports the light output device from this optical input device input after second reflecting surface and the reflection of the 3rd reflecting surface.

2. mobile reflecting surface type photoswitch according to claim 1, it is characterized in that: wherein this first reflecting surface, second reflecting surface and the 3rd reflecting surface are parallel to each other.

3. mobile reflecting surface type photoswitch according to claim 1, it is characterized in that: wherein this reflection unit further comprises movable reflection unit and fixation reflex device.

4. mobile reflecting surface type photoswitch according to claim 3, it is characterized in that: wherein this first reflecting surface and second reflecting surface are relatively arranged on this movable reflection unit.

5. mobile reflecting surface type photoswitch according to claim 4, it is characterized in that: wherein the 3rd reflecting surface is arranged at this fixation reflex device, and relative with this second reflecting surface.

6. mobile reflecting surface type photoswitch according to claim 5, it is characterized in that: wherein this first reflecting surface, second reflecting surface and the 3rd reflecting surface are parallel to each other.

7. mobile reflecting surface type photoswitch according to claim 1, it is characterized in that: wherein this optical input device and light output device comprise first optical input device, first light output arrangement, second optical input device and second light output arrangement respectively, and each light input and output unit comprise at least one collimating apparatus.

8. mobile reflecting surface type photoswitch according to claim 7, it is characterized in that: wherein this first optical input device and first light output arrangement are staggered relatively, and this second optical input device and second light output arrangement are staggered relatively.

9. mobile reflecting surface type photoswitch according to claim 7, it is characterized in that: wherein this first reflecting surface is positioned on the intersection point of first optical input device and the second optical input device input beam.

10. mobile reflecting surface type photoswitch according to claim 1 is characterized in that: wherein the light beam imported of this optical input device is exported through light output arrangement after second reflecting surface and the 3rd reflecting surface triple reflection.

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