CN2543079Y - Photoswitch combination - Google Patents

Abstract

An optical switch combination comprises an input end, an output end, a light path converting device and a driving device. The input end comprises an input fiber, a fiber capillary which is used to clamp the input fiber, and a first collimating lens which is used to collimate optical signals inputting from the input fiber. The output end comprises a plurality of output fibers and a clamping device which is used to clamp the plurality of output fibers. The light path converting device which is arranged between the input end and the output end comprises a plurality of a second collimating lenses and a connection plate which is used to clamp the plurality of second collimating lenses. The second collimating lens is provided with an inclined end. The driving device drives the light path converting device to rotate so as to arrange a special the second collimating lens on a light path between the input end and the output end and realize conversion among light paths.

Description

The photoswitch combination

[technical field]

The utility model relates to a kind of optics combination, refers to a kind of by switching the photoswitch combination to realize that light path is changed in light path of different lens especially.

[background technology]

Photoswitch is a kind of a plurality of signal paths in optical transmission line or the integrated optical circuit to be changed device with 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 is short, volume is little, and it is integrated integrated with photoelectricity to be convenient to light.Yet it inserts, and loss is big, isolation is low, and technology is still immature, and manufacturing cost is higher.Mechanical type photoswitch utilization machinery, electromagnetic mode etc. are moved optical fiber or optical element, thereby realize 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 sees also Fig. 1, and 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, support component 121 is fixed in the end of magnetic conduction shell fragment 112 and its end face (indicating) and the end of magnetic conduction shell fragment 112 and flushes, 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 126, three optical fiber 131 of a through hole, 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, yet it reaches the switching of light path by moving fiber 131, because of fibre diameter little, occur flexural deformation easily in the frequent switch moving process and it does not use the collimation lens collimated light beam, cause the light signal loss bigger, influence the optical signal transmission quality.

Another prior art sees also Fig. 2, and 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 610, a reflection unit 630 and a plurality of output terminal 620.Wherein, input end 610 comprises an input optical fibre 611 and a gradual index lens 612, and this gradual index lens 612 is used to collimate the light beam of input optical fibre 611 inputs to reflection unit 630.Reflection unit 630 comprises that a substrate 632, is located at the catoptron 631 of substrate 632, and itself and through the light beam of gradual index lens 612 collimations in angle of 45 degrees.These substrate 632 bottoms have one and can cooperate to drive the hole 633 that this reflection unit 630 rotates with the connecting rod (figure does not show) of driving mechanism, the input beam of input optical fibre 611 can be coupled to output terminal 620 when reflection unit 630 is rotated, the central shaft conllinear of this hole 633 and gradual index lens 612, and this reflection unit 630 can this central shaft be the axle rotation.A plurality of output terminals 620 comprise output optical fibre 621 respectively, and each optical fiber 621 matches with a gradual index lens 622 respectively, and these a plurality of output terminals 620 are along the circumference stationary arrangement coaxial with hole 633 and gradual index lens 612.

The light beam of input optical fibre 611 inputs inputs to catoptron 631 through gradual index lens 612 collimations, by being coupled to different output terminals 620 after catoptron 631 reflections that rotate to diverse location, reaches the purpose that light path is switched.But, this optical switch construction complexity, each output terminal 620 necessary accurate distribution is around input end 610, the accuracy requirement height of reflection unit 630 anglecs of rotation when light path is switched, and a plurality of output terminals 620 include output optical fibre 621 and gradual index lens 622, make that this photoswitch cost is higher, also be difficult to develop simultaneously to miniaturization.

[utility model content]

The purpose of this utility model be to provide a kind of compact conformation, processing procedure simple, be easy to realize miniaturization, can reduce the photoswitch combination of manufacturing cost simultaneously.

The purpose of this utility model is achieved in that provides a kind of photoswitch combination, and it comprises an input end, an output terminal, a light path switching device and a drive unit.This input end comprises the optical fiber kapillary and one and first collimation lens of input optical fibre relative positioning of an input optical fibre, a fixing input optical fibre, and this first collimation lens is in order to the light signal of collimation from the input optical fibre input.This output terminal comprises the holder of many output optical fibres and many output optical fibres of a fixing.This holder comprises one first support component, first lasso, second lasso and second support component.Sheathed first support component of first lasso, this first support component is offered a plurality of grooves that hold many output optical fibres.Second support component is fixed on first support component by viscose glue, and it is sheathed within second lasso.This light path switching device is between input end and output terminal, and it comprises the web joint of a plurality of second collimation lenses and these a plurality of second collimation lenses of a fixing.This second collimation lens tool, one inclined end face.This drive unit drives light path switching device and rotates so that the second specific collimation lens places the light path between input end and the output terminal, realizes the switching of light path.

Compare with existing optical switch device, photoswitch of the present utility model combination is by many output optical fibres of a holder fixing, and compact conformation, processing procedure be simple, be easy to realize miniaturization can reduce manufacturing cost simultaneously.

[description of drawings]

Fig. 1 is the sectional view of prior art photoswitch.

Fig. 2 is the stereographic map of another prior art photoswitch.

Fig. 3 is the stereographic map of the utility model photoswitch combination.

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

Fig. 5 is the left view of the holder of the utility model photoswitch combination.

Fig. 6 is the right view of the holder of the utility model photoswitch combination.

Fig. 7 is the part light path synoptic diagram of the utility model photoswitch combination.

Fig. 8 is another part light path synoptic diagram of the utility model photoswitch combination.

[embodiment]

See also Fig. 3, the combination of the utility model photoswitch comprises that an input end 21, an output terminal 22, place light path switching device 23, a pedestal 24 and a drive unit 25 between input end 21 and the output terminal 22.

See also Fig. 4, input end 21 comprises an input optical fibre 211, optical fiber kapillary 212, first collimation lens 213, first inner sleeve 214 and first outer tube 216.This input optical fibre 211 makes up in order to input optical signal to this photoswitch.This optical fiber kapillary 212 is accommodated this input optical fibre 211 of fixing, and its inner face 2121 is ground into the dip plane that the inclination angle is 6 to 8 degree, to improve return loss.First collimation lens 213 is aimed at mutually with optical fiber kapillary 212, become directional light in order to light beam with input optical fibre 211 inputs, the inner face 2131 of its adjacent fiber kapillary 212 also is ground into the inclined-plane of 6 to 8 degree, and other end (not indicating) is non-spherical structure.In the present embodiment, this first collimation lens 213 is the lens of die casting formation.This first inner sleeve, 214 sheathed optical fiber kapillaries 212 and first collimation lens 213 are in order to the relative positioning optical fiber kapillary 212 and first collimation lens 213.These first outer tube, 216 sheathed first inner sleeves 214 are in order to accommodate this input end 21 of protection.

Output terminal 22 comprises many output optical fibres 221, a holder 222, one second inner sleeve 224 and one second outer tube 226.Many output optical fibres of these holder 222 fixings 221, it comprises one first circular support element 223, first lasso 225, second lasso 227 and the second circular support element 229.Consult Fig. 5 together, many equally distributed v-depressions 228 on the output optical fibre optical axis direction of the first circular support element, 223 tools.All peelled off for one section of many output optical fibres 221 and moulded cover (Jacket), become one section naked fibre (not indicating).The naked fibre of this section is immobilizated in respectively in the groove 228 of the first circular support element 223.First lasso, the 225 sheathed first circular support elements 223.Consult Fig. 6 together, the second circular support element 229 is by the viscose glue first circular support element 223 that is connected, and it is sheathed within second lasso 227.The not stripping of output optical fibre 221 is moulded the cover section and is immobilizated between the second circular support element 229 and the lasso 227.Second inner sleeve 224 is sheathed on outside the holder 222, and second outer tube 226 is sheathed on outside second inner sleeve 224.

Please consult Fig. 4 once more, this light path switching device 23 places between input end 21 and the output terminal 22, and it comprises the web joint 232 of a plurality of second collimation lenses 231 and these a plurality of second collimation lenses 231 of fixing.These a plurality of second collimation lenses 231 are circular arc and are arranged in web joint 232 1 ends, in the present embodiment, these a plurality of second collimation lenses 231 are lens that die casting forms, and the end face 2311 of its contiguous input end 21 all is formed the same tilt angle, and other end (not indicating) is non-spherical structure.Web joint 232 other ends are connected with drive unit 25 (as shown in Figure 3).During use, drive web joint 232 by drive unit 25 and rotate, to switch the second different collimation lenses 231.Its end face 2311 was put the angle difference when these a plurality of second collimation lenses 231 placed light path, made to be coupled into different output optical fibre 221 from the directional light of first collimation lens, 213 outputs.

Please consult Fig. 3 once more, drive unit 25 comprises a drive link 251 and a support 252, and this drive link 251 roughly becomes cylindric, and an end (not indicating) and web joint 232 join, the other end then is contained in this support 252, and is connected in an external control device (figure does not show).

Pedestal 24 comprises a base 242 and two sway braces 244.This two sway brace 244 is positioned at the both sides of light path switching device 23, respectively fixing input end 21 and output terminal 22.This base 242 is provided with an opening 246, and web joint 232 can rotate in opening 246.

See also Fig. 3 and Fig. 7, make a certain lenses 2312 of a plurality of second collimation lenses 231 place light path by drive unit 25, the light signal of input becomes parallel beam through first collimation lens 213, and is incident to lens 2312, is coupled into a wherein optical fiber 2211 of many output optical fibres 221.Consult Fig. 8 together, by drive unit 25 drivings web joint 232 is rotated, another lens 2313 of light path switching device 23 are inserted light path, because that lens 2313 and the inclined end face 2311 of lens 2312 are put angle is different, input optical signal will transfer to another output optical fibre 2212.The utility model utilizes the swing of web joint 232 and makes different second collimation lens, 231 incision light paths, because when these a plurality of second collimation lenses 231 place light path, it is put angle and has nothing in common with each other, and makes light path cut different output optical fibres 221, thereby realizes the function that light path is switched.

Be appreciated that by the second different collimation lens 231 of drive unit 25 drive end face tilt angles and also can reach same effect.

Claims (9)

1. photoswitch combination, it comprises the input end of a tool one input optical fibre, the output terminal of many output optical fibres of one tool, one light path switching device and a drive unit, it is characterized in that: this output terminal comprises the holder of many output optical fibres of a fixing, this holder further comprises one first support component and one first lasso, sheathed first support component of this first lasso wherein, first support component is offered a plurality of grooves that hold many output optical fibres, this light path switching device is between input media and output unit, comprise a plurality of lens, this drive unit is connected with light path switching device, the driving light path switching device rotates, and therefore lens in a plurality of lens insert in the light path between input end and the output terminal.

2. photoswitch combination according to claim 1 is characterized in that this input end comprises the optical fiber kapillary and one first collimation lens of a fixing input optical fibre.

3. photoswitch according to claim 1 combination is characterized in that this a plurality of lens one end slope equal angular, and its inclined end face to put angle neither identical.

4. photoswitch combination according to claim 1 is characterized in that these a plurality of lens one end faces form an angle of inclination, and the angle of inclination difference of different lens.

5. photoswitch combination according to claim 1 is characterized in that this light path switching device further comprises a plate, and these a plurality of lens are circular arc and are laid in web joint one end, and this web joint other end connects drive unit.

6. photoswitch combination according to claim 1 is characterized in that it further comprises a pedestal, and this pedestal comprises a base and two sway braces, wherein this two sway braces difference fixing input ends and output terminal.

7. photoswitch combination according to claim 1, the holder that it is characterized in that this output terminal further comprises one second lasso and one second circular support element, the second circular support element is by viscose glue first support component that is connected, and it is sheathed on second lasso.

8. photoswitch combination according to claim 7, it is characterized in that output optical fibre one end is naked fibre, the naked fibre of this section is immobilizated in respectively between the groove and first lasso of first support component, and the remainder of output optical fibre is immobilizated between the second circular support assembly and second lasso.

9. photoswitch combination according to claim 1, the groove that it is characterized in that first support component is a V-shaped groove.

Images