CN2546895Y

CN2546895Y - Photoswitch

Info

Publication number: CN2546895Y
Application number: CN02226714U
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: 2002-04-06
Filing date: 2002-04-06
Publication date: 2003-04-23
Anticipated expiration: 2012-04-06

Abstract

The utility model relates to an optical switch comprising an input device, an output device, an optical path switch device and a driving device, wherein the input device comprises an optical fiber insertion pin with single built-in optical fiber, and a collimation lens; the output device comprises a multi-core optical fiber insertion pin with a plurality of built-in output optical fibers and a collimation lens; the optical path lens device comprises a plurality of prisms. The collimation lens of the input device collimates the input light beams and then transfers to the optical path switch device, the driving device drives one prism of the optical path switch device to be in the optical path, one prism of the optical path switch device deflects the light beams and then transfers to the output device, the collimation lens of the output device focuses the deflected light beams to one among a plurality of output optical fibers.

Description

Photoswitch

[technical field]

The utility model relates to a kind of photoswitch, relates in particular to a kind of mechanical optical switch, and this photoswitch adopts light path deviation element to realize the light path conversion.

[background technology]

Photoswitch is a kind of can the conversion mutually or the device of logical operation the light signal in optical transmission line or the integrated optical circuit, it is widely used in optical fiber telecommunications system, optical fiber network system, optical fiber measurement system and optical fiber sensing system etc., is one of the crucial optical device in optical communication field.

According to the principle of work of photoswitch, it can be divided into mechanical type and on-mechanical formula 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 output terminals.Wherein, moving fiber type mechanical optical switch is realized the switching of light path by moving fiber, but because of fibre diameter is little, easily produces flexural deformation 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, and by the switching of mobile optical element realization light path, it is lower that this kind 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 present comparatively a kind of mechanical optical switch of widespread usage.

A kind of existing machinery formula photoswitch sees also United States Patent (USP) the 5th, 420, and No. 946 (with reference to Fig. 1), it comprises a stationary platform 600, an input media 610, a plurality of output unit 620 and a reflection unit 630.Wherein, this stationary platform 600 is in order to fix this input media 610, output unit 620 and reflection unit 630, this input media 610 comprises an input optical fibre 611 and a GRIN Lens 612, 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 offer one in order to cooperate the external driver device pilot hole 633 of (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 roughly rounded to be arranged in around the reflection unit 630, adopts external driver device, and alternative rotary reflection device 630 makes input beam from 621 outputs of different output optical fibres.Because the light path tool reversibility of this photoswitch also can be selected to make input light from the input of one of a plurality of output optical fibres 621, and transfer to input media 610.

But this existing photoswitch has some defectives.At first, this photoswitch makes optical switch construction complexity, bulky because each output unit 620 is discrete each other, and input media 610 is very numerous and diverse with the adjustment process of a plurality of output units 620.Secondly, because each output unit 620 comprises an output optical fibre 621 and a GRIN Lens 622 respectively, make that this photoswitch cost is higher and the insertion loss is big, switching speed is low.

[utility model content]

The purpose of this utility model is to provide a kind of photoswitch, and this optical switch construction compactness, cost are low, and switching speed and other optical property are preferable.

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.Wherein, this input media comprises the optical fiber contact pins and collimation lens of a built-in single input optical fibre; This output unit comprises the multi-core optical fiber contact pins and collimation lens of built-in many output optical fibres; This optical path switching device comprises the prism combination of a plurality of prisms of a tool.The collimation lens of this input media is with the input beam collimation and transfer to optical path switching device, the prism that drive unit drives optical path switching device is arranged in light path, this prism is with this light beam deviation and transfer to output unit, and the light beam of the collimation lens of this output unit after with this deviation focuses to one of many output optical fibres.

Compare with existing photoswitch, the utlity model has following advantage: because of the output unit of the utility model photoswitch adopts a multi-core optical fiber contact pins and a collimation combination of lenses, can greatly reduce the quantity of collimation lens, make that optical switch construction is simple, volume is little, cost is low, and it is by selecting different prisms to realize that light path is switched, and is easy to adjustment, it is little to insert loss.

[description of drawings]

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

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

Fig. 3 is the sectional view of the utility model photoswitch.

Fig. 4 is another sectional view of the utility model photoswitch.

The light path synoptic diagram of Fig. 5 and Fig. 6 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 a built-in input optical fibre 101, output unit 200, an optical path switching device 300 and a drive unit 400 of many output optical fibres of a tool 201.This photoswitch 10 further comprises and is used for the base 500 of fixing said apparatus, and it comprises location-plate 502,503,504 and openings 505 that a substrate 501, three extends from substrate 501.During work, this optical path switching device 300 makes under drive unit 400 control from the beam Propagation of input optical fibre 101 one of root output optical fibre 201 at the most.

See also Fig. 3, this input media 100 is fixed on a location-plate 502 from substrate 501 extensions, it comprises the optical fiber contact pins 110 and first collimation lens 120 of a built-in input optical fibre 101, this first collimation lens 120 will be from the beam Propagation of input optical fibre 101 to optical path switching device 300, and this collimation lens 120 can adopt arbitrary lens with alignment function, as GRIN Lens, die casting lens etc.This optical fiber contact pins 110 roughly becomes cylindric, offer a through hole 111 that holds this input optical fibre 101 in it, the end of this input optical fibre 101 (not indicating) is concordant with an end face 112 of optical fiber contact pins 110, and for improving return loss, it is the dip plane of 6 degree to 8 degree that this end face 112 is ground into the inclination angle.In the present embodiment, this first collimation lens 120 is the die casting lens, and it roughly becomes cylindric, also is parallel to this inclined end face 112 through grinding with optical fiber contact pins 110 opposing end faces 121, and other end 122 is a non-spherical structure.This single fiber contact pin 110 and first collimation lens 120 are aimed at the back suit and are fixed in the quartz socket tube 130; and outside the outstanding quartz socket tube 130 of first collimation lens, 120 parts; for further protecting this input media 100, a sheathed metal sleeve 140 outside quartz socket tube 130.

This output unit 200 comprises the multi-core optical fiber contact pins 210 and second collimation lens 220 of built-in many input optical fibres 201, a through hole of accommodating many output optical fibres 201 (indicating) is offered in these multi-core optical fiber contact pins 210 inside, this second collimation lens 220 will focus to specific output optical fibre 201 from the light beam of optical path switching device 300, and this collimation lens can adopt arbitrary lens with alignment function, as GRIN Lens, die casting lens etc.This output unit 200 is fixed on the location-plate 503 that extends from substrate 501.

This optical path switching device 300 is between input media 100 and output unit 200, in the present embodiment, it comprises prism combination 301, this prism combination 301 comprises a plurality of prisms, it is the inclined-plane that each prism all has an end face, and the inclination angle of inclined plane difference of each prism makes light beam produce different deviations when different prisms transmits.In addition, also can adopt the prism of tool different refractivity to realize this effect.

Please cooperate with reference to figure 2 and Fig. 4, this drive unit 400 comprises that one cooperates the drive link 410 of optical path switching device 300 and the holding board 420 of fixed prism combination 301.This drive link 410 roughly becomes cylindric, and the one end is fixed on location-plate 504, and cooperates with external control device (figure does not show).This location-plate 504 forms from substrate 501 extensions, and it comprises the pilot hole 506 of this drive link 410 of a fixing.This holding board 420 roughly becomes rectangle, and the one end has a plurality of mounting holes 411 to be arranged in arc shaped to be used for accommodating this prism of Gu Na combination 301, and the other end has a pilot hole 421 that connects drive link 410.In addition, holding board 420 can be swung in the opening 505 of substrate 501, also can make location-plate 504 tool certain altitudes and without opening 505.

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 optical path switching device 300 subsequently, detect the optical property of each channel at last, if the result shows the intact then position of fixing each device of performance.

Please cooperate referring to figs. 2 and 5, be the light path synoptic diagram of the utility model photoswitch 10.Drive unit 400 drives holding board 420 swings, make a prism 3011 of prism combination 301 be arranged in light path, light beam from input optical fibre 101 is directional light through first collimation lens, 120 collimations, because refraction effect changes a light beam along the specific direction transmission into, this light beam is assembled to specific output optical fibre 2011 by second collimation lens 220 subsequently during by prism 3011.In the lump with reference to figure 6, drive unit 400 drives holding board 420 swings, make another prism 3012 of prism combination 301 be arranged in light path, light beam from input optical fibre 101 is directional light through first collimation lens, 120 collimations, because refraction effect changes a light beam along the specific direction transmission into, this light beam is assembled to another specific output optical fibre 2012 by second collimation lens 220 subsequently during by prism 3012.Equally, drive unit 400 drives holding boards 420 swings, can make other prism of prism combination 301 place light path, thereby is incident to different output optical fibre 201 after making light beam generation deviation from input optical fibre 101.Therefore, the utility model photoswitch 10 can be realized the conducting of input optical fibre 101 and different output optical fibres 201.

Claims

1. photoswitch, comprise an input media, one optical path switching device, one output unit and a drive unit, it is characterized in that this optical path switching device is between input media and output unit, and comprise that at least one prism makes up, this input media comprises the contact pin of a built-in single input optical fibre, this output unit comprises the multi-core optical fiber contact pins of built-in many output optical fibres, the driving of this drive unit makes the combination of this prism have a specific prism to be arranged in light path between input media and output unit, and this specific prism makes from the light beam generation deviation of input media and transfers to output unit.

2. photoswitch as claimed in claim 1 is characterized in that this input media further comprises collimation lens.

3. photoswitch as claimed in claim 2 is characterized in that this collimation lens is the die casting lens, and one end is an aspheric surface.

4. photoswitch as claimed in claim 1 is characterized in that this output unit further comprises collimation lens.

5. photoswitch as claimed in claim 4 is characterized in that this collimation lens is the die casting lens, and one end is an aspheric surface.

6. photoswitch as claimed in claim 1 is characterized in that this drive unit comprises at least one holding board and at least one drive link, and a side of holding board forms a mounting hole that is used for being connected drive link.

7. photoswitch as claimed in claim 6, the opposite side that it is characterized in that this holding board are offered the mounting hole that holds the combination of fixing prism of a plurality of arc shootings.

8. photoswitch as claimed in claim 6 is characterized in that this drive unit drives this holding board and swings in light path.

9. photoswitch as claimed in claim 1 is characterized in that further comprising a base, is used for fixing this input media, output unit, optical path switching device and drive unit.

10. photoswitch as claimed in claim 1 is characterized in that this multi-core optical fiber contact pins inside offers a through hole of accommodating many output optical fibres.