CN2557966Y

CN2557966Y - Light switch

Info

Publication number: CN2557966Y
Application number: CN02226705U
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: 2003-06-25
Anticipated expiration: 2012-04-06

Abstract

Disclosed is an optical switch device which comprises an input unit, an output unit, an optical path switching unit and a drive unit, wherein the input unit includes a fiber stub internally provided with an input fiber, and a collimation lens; the output unit includes a multi-fiber stub internally provided with a plurality of output fibers, and a collimation lens; the optical path switching unit is positioned between the input and the output units, including a plurality of prisms held on an installation plate. In the structure, an input beam is collimated and transmitted to the optical path switching unit by the collimation lens of the input unit, the optical path switching unit is translated by the drive unit for ensuring a particular prism to be positioned in the optical path, and the input beams are deflected along a particular direction by the particular prism and then are focused to a particular output fiber through the collimation lens of the output unit.

Description

Optical switch device

[technical field]

The utility model relates to a kind of optical switch device, especially about a kind of mechanical optical switch device that adopts the mobile optical element to realize the light path conversion.

[background technology]

Photoswitch is a kind of each signal path in optical transmission line or the integrated optical circuit to be changed or the optical device of logical operation mutually, 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 crucial optical device in the optical communication field.

According to the principle of work of photoswitch, photoswitch can be divided into mechanical optical switch and non-mechanical optical switch two big classes usually.Mechanical optical switch utilization machinery, electromagnetic mode are moved optical fiber or optical element, thereby realize the light path selection of light beam between input and output port.Wherein, moving fiber type mechanical optical switch is realized the switching of light path by moving fiber, but because of fibre diameter is little, is easy to produce flexural deformation in the moving process, and it is bigger to cause inserting loss, influences optical signal transmission.Mobile optical element type photoswitch is another kind of mechanical optical switch, and its input end fiber and output terminal optical fiber maintain static, and by the switching that realizes light path of moving of optical element, it is lower that this optical switch device 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 device of widespread usage.

Consult Fig. 1, be United States Patent (USP) the 5th, 867, a kind of existing machinery formula optical switch device that is disclosed for No. 617, it comprises an input media 600, four output units 610, three refracting means 650, a control device 660 and holding unit 670.Wherein, this input media 600 comprises an input optical fibre 601 and an input optical fibre sleeve pipe 602, this input optical fibre sleeve pipe 602 is accommodated a GRIN Lens (figure does not show), each output unit 610 structure is identical, comprise an output optical fibre 611 and an output optical fibre sleeve pipe 612 respectively, this output optical fibre sleeve pipe 612 is set with a GRIN Lens (figure does not show), this holding unit 670 comprises a substrate 672 and a fixed part 671, this fixed part 671 is in order to fix this input media 600 and four output units 610, this three refracting means 650 can be the parallelogram prism, this control device 660 comprises three overarm arms 661, three drive parts 662 and a control circuit 663, wherein these three overarms arm, 661 1 ends (not indicating) join with three refracting means 650 respectively, by drive part 662 controls overarm arm 661 with matching, refracting means 650 feasible and that overarm arm 661 joins moves up and down, promptly control refracting means 650 and place light path or remove, thereby realize conversion light path from light path.

Yet, should have the following disadvantages by existing optical switch device: because each output unit 610 of this photoswitch is discrete each other, and each output unit 610 comprises that respectively an output optical fibre 611 and accommodates the ferrule 612 of GRIN Lens, makes that this optical switch device complex structure is huge, and cost is higher.Secondly, the control device 660 of this photoswitch comprises overarm arm 661 and the drive part 662 that cooperates each refracting means 650 respectively, when realizing the light path conversion, need by control circuit 663 control corresponding

driving parts

662 and 661 work of overarm arm, and work as output port more for a long time, light signal needs can realize the light path conversion through a plurality of prisms that its light path transfer process will be comparatively numerous and diverse, 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 compact conformation, be easy to realize the light path conversion, cost is low and switching speed and the preferable optical switch device of other optical property.

The purpose of this utility model is achieved in that provides a kind of optical switch device, 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 input optical fibre, this output unit comprises the many optical fiber contact pins and collimation lens of built-in many output optical fibres, this optical path switching device is between input media and output unit, it comprises a plurality of light path deviation elements that are retained on the installing plate, this light path deviation element can be prism, and this drive unit comprises the drive link that drives this optical path switching device.The collimation lens of input media transfers to optical path switching device with the input beam collimation, drive unit drives the optical path switching device translation makes a certain specific light path deviation element be arranged in light path, this specific light path deviation element along the specific direction deviation, and focuses to specific output optical fibre via the collimation lens of the output unit light beam after with this deviation with input beam.

Compare with existing optical switch device, the utlity model has following advantage: the utility model optical switch device adopts many optical fiber contact pins of built-in many output optical fibres and single collimation lens to constitute output unit, greatly reduce the number of collimation lens, thereby reduce cost and make overall optical switchgear compact conformation, and improve whole optical property.In addition, drive unit can be realized the adjusting operation of all deviation elements in the optical path switching device by a drive link drive installation plate translation, and the light path that realizes input optical fibre and specific output optical fibre is selected to need not to change via a plurality of prisms, it is simple and easy that light path is regulated operation, and the insertion loss is lower, switching speed is high.

[description of drawings]

Fig. 1 is the stereographic map of prior art optical switch device.

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

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

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

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

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

[embodiment]

Please refer to Fig. 2, is the stereographic map of the utility model optical switch device.This optical switch device 10 comprises the input media 100 of a tool input optical fibre 120, output unit 200, an optical path switching device 300 and a drive unit 400 of many output optical fibres of a tool 220.This optical switch device 10 further comprises the base 500 of a fixing said apparatus.During work, this optical path switching device 300 makes beam Propagation from input optical fibre 120 to a certain specific output optical fibre 220 under drive unit 400 control.

See also Fig. 3, this input media 100 is retained on a location-plate 520 that extends from the substrate 510 of base 500, it comprises the optical fiber contact pins 130 and die casting lens 110 of a built-in input optical fibre 120, these die casting lens 110 will be in order to will and transferring to optical path switching device 300 from the beam collimation of input optical fibre 120, certainly, also can adopt other lens, as alternative die casting lens 110 such as GRIN Lens with alignment function.This optical fiber contact pins 130 roughly becomes cylindric, offer a through hole 131 that holds input optical fibre 120 in it, the end of this input optical fibre 120 (not indicating) is concordant with an end face 132 of optical fiber contact pins 130, and for improving return loss, it is the dip plane of 6 degree to 8 degree that this end face 132 is ground into the inclination angle.These die casting lens 110 roughly become cylindric, and also through grinding to be parallel to this inclined end face 132, other end 112 is a non-spherical structure for itself and optical fiber contact pins 130 opposing end faces 111.This optical fiber contact pins 130 and die casting lens 110 are aimed at the back suits and are retained in the quartz socket tube 140, and the first die casting lens, 110 parts stretch out outside the quartz socket tube 140, are further this input media 100 of protection, a sheathed metal sleeve 150 outside quartz socket tube 140.

This output unit 200 comprises the many optical fiber contact pins 230 and die casting lens 210 of built-in many output optical fibres 220, a through hole 231 that holds these many output optical fibres 220 is offered in many optical fiber contact pins 230 inside, these die casting lens 210 will be in order to will focus to output unit 200 from the light beam of optical path switching device 300, and it also can adopt the lens of these effects of tool such as GRIN Lens to substitute die casting lens 210.This output unit 200 is fixed on a location-plate 530 from substrate 510 extensions.

Consult Fig. 2 together, this optical path switching device 300 comprises a prism array 310 and an installing plate 320 between input media 100 and output unit 200.This prism array 310 is retained on the installing plate 320, comprise a plurality of prisms (not indicating), with so that produce deviation and transfer to specific output optical fibre 220 from the light beam of input media 100, these a plurality of prisms have an inclined end face 3101, and the inclination angle difference of the inclined end face 3101 of different prisms, and other light path deviation element also can be applicable to the utility model.Installing plate 320 is roughly rectangular, a plurality of mounting holes 321 and a bossing 322 are arranged on it, wherein mounting hole 321 is in order to holding prism array 310, and 322 of this bossings match with a groove 541 on the fixed block 540 that substrate 510 extends, in order to fixed light path conversion equipment 300.

Consult Fig. 4, this drive unit 400 comprises two drive links 410 and the mounting base 420 thereof that cooperates optical path switching device 300.This two drive link 410 roughly becomes cylindric, and one end 411 is retained on a corresponding mounting base 420 respectively, and cooperates with an external control device (figure does not show), and 412 of the other ends are connected installing plate 320 therebetween.

During work, the external control device drives drive link 410 motions, thereby make installing plate 320 translations, a specific prism in the prism array 310 that is retained on the installing plate 320 is in the light path between input media 100 and the output unit 200, and this specific prism transfers to output unit 200 after making light beam deviation from input media 100.

Please cooperate with reference to figure 4 and Fig. 5,320 translations of drive unit 400 drive installation plates, make a prism 311 of prism array 310 be arranged in light path, light beam from input optical fibre 120 is directional light through die casting lens 110 collimations, be incident to die casting lens 210 by prism 311 backs because refraction effect changes a parallel beam along the specific direction transmission into, this light beam converges to specific output optical fibre 221 via die casting lens 210 subsequently.

Consult Fig. 6 together, 320 translations of drive unit 400 drive installation plates are regulated prism array 310 and are made another prism 312 be arranged in light path, and at this moment, input beam to corresponding output optical fibre 222, is realized the light path conversion via prism 312 deviations.

Be appreciated that the utility model optical switch device 10 can realize the conducting light paths of input optical fibre 120 and one of many output optical fibres 220.Because light path is reversible, light signal also can transfer to input media 100 from arbitrary output optical fibre 220 of output unit 200.

Claims

1. optical switch device, comprise an input media, one output unit, one optical path switching device and a drive unit, this optical path switching device comprises a plurality of prisms, it is characterized in that this input media comprises the optical fiber contact pins of a built-in input optical fibre, this output unit comprises many optical fiber contact pins of built-in many output optical fibres, this optical path switching device is between input media and output unit, this drive unit drives the optical path switching device translation, make in the light path of a certain specific prism between input media and output unit, thereby selectivity transfers to a specific output optical fibre with input beam from input optical fibre.

2. optical switch device as claimed in claim 1 is characterized in that this input media further comprises one in order to will be from the beam collimation of the input optical fibre collimation lens to optical path switching device.

3. optical switch device as claimed in claim 1 is characterized in that this output unit further comprises one in order to will focus to the collimation lens of one of many output optical fibres from the light beam of optical path switching device.

4. optical switch device as claimed in claim 2 is characterized in that this collimation lens is the die casting lens, and one end is an aspheric surface.

5. optical switch device as claimed in claim 1 is characterized in that this optical path switching device further comprises the installing plate of a plurality of prisms of a fixing.

6. optical switch device as claimed in claim 5 is characterized in that offering on this installing plate the mounting hole of a plurality of that be arranged in parallel, fixing prisms.

7. optical switch device as claimed in claim 1 is characterized in that this drive unit comprises the drive link in order to this optical path switching device of transmission.

8. optical switch device as claimed in claim 1, it further comprises the base of this input media of a fixing, output unit, optical path switching device and drive unit.

9. optical switch device as claimed in claim 1 is characterized in that these a plurality of prism one end faces are the dip plane, and the inclination angle difference of the inclined end face of different prisms.

10. optical switch device as claimed in claim 1, the many optical fiber contact pins inside that it is characterized in that this output unit are offered a through hole that holds many output optical fibres.