CN2546896Y

CN2546896Y - Mechanical optical converter

Info

Publication number: CN2546896Y
Application number: CN 02227290
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: 2002-04-27
Filing date: 2002-04-27
Publication date: 2003-04-23
Anticipated expiration: 2012-04-27

Abstract

The utility model relates to a mechanical optical switch device, which comprises an input end, an output end, a prism array and a driving device, the input end comprises an input optical fiber, an optical fiber insertion pin and a collimation lens, the optical fiber insertion pin accommodates and holds the input optical fiber, the collimation lens is used to collimate the signal inputted by the input optical fiber. The output end comprises a plurality of output optical fibers, a multi-core optical fiber holder and a collimation prism, the multi-core optical fiber holder accommodates and holds a plurality of output optical fibers, the collimation lens is used to focus the signal light to the output optical fiber, the prism array is arranged between the input end and the output end and is composed of a plurality of prisms. The driving device drives the prism array to perform flat movement so that the prisms assembled in the different direction are arranged in the optical path between the input end and the output end to realize the switching of optical path.

Description

The mechanical type optical converting device

[technical field]

The utility model is about a kind of mechanical type optical converting device, refers to a kind of mechanical type optical converting device of realizing the light path switching by the mobile optical element especially.

[background technology]

Optical converting device is a kind of signal path 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 optical converting device, it can be divided into on-mechanical formula optical converting device and mechanical type optical converting device two big classes.Wherein, on-mechanical formula optical converting device 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 in realizing that light is integrated and photoelectricity is integrated.Weak point is that its insertion loss is big, isolation is low, and technical requirement is higher, the manufacturing cost height.The mechanical type optical converting device is to utilize machinery, electromagnetic mode etc. that optical fiber or optical element are moved, thereby realizes the switching of light beam between different I/O ends.This class mechanical type optical converting device insertion loss is low, isolation is high, is present most widely used light path conversion equipment.

See also Fig. 1, United States Patent (USP) the 4th, 146, No. 856 announcement one moving fiber type mechanical type optical converting devices.This mechanical type optical converting device 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 two 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 on 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 on the ad-hoc location of the inner tubal wall (not indicating) of sleeve pipe 10, it has a through hole 125, support component 123 is positioned at the position of the contiguous support component 121 in end of magnetic conduction shell fragment 111, 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 separately fixed at 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 have 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 mechanical type optical converting device can be realized the switching of light path, weak point, it reaches the switching of light path by moving fiber 131, because of fibre diameter little, cause flexural deformation and its not to use the collimation lens collimated light beam easily in the frequent switch moving process, thereby the light signal loss is bigger, influences transmission quality.

See also Fig. 2, United States Patent (USP) the 5th, 420 discloses a kind of mobile optical element type mechanical type optical converting device No. 946.This mechanical type optical converting device 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, and this gradual index lens 142 is that light beam in order to collimation input optical fibre 141 inputs is to reflection unit 15.Reflection unit 15 comprises that a substrate 151, is located at the catoptron 152 in the substrate 151, and itself and through the light beam of gradual index lens 142 collimation 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.Output terminal 16 comprises output optical fibre 161 respectively, and each optical fiber 161 matches with a gradual index lens 162 respectively, and output terminal 16 is along the circumference stationary arrangement coaxial with hole 153 and gradual index lens 142.

The light beam of input optical fibre 141 inputs is input to catoptron 152 through gradual index lens 142 collimations, is coupled to different output terminal 16 after catoptron 152 reflections through rotating to diverse location, reaches the purpose that light path is switched.Weak point is the complex structure of this mechanical type optical converting device, each output terminal 16 necessary accurate distribution is around input end, the positioning accuracy request height of the anglec of rotation of reflection unit 15 when light path is switched, and each output terminal 16 includes a gradual index lens 162, make that this mechanical type optical converting device cost is higher, also be difficult to develop simultaneously to miniaturization.

Therefore, provide a kind of compact conformation, processing procedure is simple, and the mechanical type optical converting device 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 mechanical type optical converting device.

The purpose of this utility model is achieved in that provides a mechanical type optical converting device to comprise an input end, an output terminal, a prism array and a drive unit.This input end comprises an input optical fibre, an optical fiber contact pins and collimation lens, and this optical fiber contact pins is accommodated this input optical fibre of fixing, and this collimation lens is used for collimating the light signal of this input optical fibre input.This output terminal comprises many output optical fibres, a multi-core fiber holder and one and the collimation lens that is oppositely arranged of multi-core fiber holder, and this multi-core fiber holder is accommodated this multifiber of fixing, and this drive unit drives the conversion that the prism translation realizes light path.

Compared with prior art, the following advantage of this mechanical type optical converting device tool: the one, by a multi-core fiber holder fixing multifiber, and this multifiber shares collimation lens, thereby compact conformation, is easy to realize miniaturization; The 2nd, between two collimation lenses, carry out light path and switch, reduced the aligning difficulty, make the alignment precision of whole device greatly improve, processing procedure is simple simultaneously, has reduced production cost.

[description of drawings]

Fig. 1 is the diagrammatic cross-section of existing machinery formula optical converting device.

Fig. 2 is the stereographic map of another existing machinery formula optical converting device.

Fig. 3 is the stereographic map of the utility model mechanical type optical converting device.

Fig. 4 is the sectional view of Fig. 3 along the IV direction.

Fig. 5 is the sectional view of Fig. 3 along the V direction.

Fig. 6 A is the left view of the multi-core fiber holder of the utility model mechanical type optical converting device.

Fig. 6 B is the sectional view of the multi-core fiber holder of the utility model mechanical type optical converting device.

Fig. 6 C is the right view of the multi-core fiber holder of the utility model mechanical type optical converting device.

Fig. 7 and Fig. 8 are the part light path synoptic diagram of the utility model mechanical type optical converting device.

[embodiment]

See also Fig. 3, Fig. 6 A to 6C, the utility model mechanical type optical converting device comprises an input end 21, an output terminal 22, a prism array 23, a prism holder 25, a base 26 and a drive unit 27.

Input end 21 comprises an input optical fibre 211, optical fiber contact pins 212, collimation lens 213, inner sleeve 214 and outer tube 215.This input optical fibre 211 is used for input optical signal to this mechanical type optical converting device.This optical fiber contact pins 212 is accommodated this input optical fibre 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 optical fiber contact pins 212, the end of optical fiber 211 can be imported in the through hole of optical fiber contact pins 212 via this tapered opening, and the end face of optical fiber 211 flushes with the inclined-plane of optical fiber contact pins 212.Collimation lens 213 and optical fiber contact pins 212 aimed at the light beams that are used for collimating input optical fibre 211 inputs mutually, the end face of its adjacent fiber contact pin 212 also grind to form with contact pin 212 6 to 8 degree inclined-planes in the same way with raising return loss.The solid optical fiber contact pins 212 of this inner sleeve 214 covers and collimation lens 213 are used for the relative position of positioning optical waveguides contact pin 212 and collimation lens 213.This outer tube 215 is fixed in outside the inner sleeve 214, is used for accommodating and protects this input end 21.

Prism holder 25 comprises a prism holding board 251, and this prism holding board 251 has a plurality of mounting holes 252 that conllinear arranges and one and a plurality of mounting hole 252 parallel guide rod 253.Top and each mounting hole 252 that these a plurality of mounting holes 252 are positioned at prism holding board 251 all have a shoulder (not icon), be used for installing respectively and fixed prism 23, these guide rod 253 cross sections are trapezoidal, and its side that contacts with prism holding board 251 (not indicating) is narrower.Prism array 23 is made of the prism of a plurality of different directions assemblings, wherein, each prism all has a face 2311 and an inclined-plane 2312 perpendicular to optical axis, prism array 23 is between input end 21 and output terminal 22, place light path and change the path of light path between input end 21 and the output terminal 22 via the prism of the different directions in the prism array 23 assembling, and the flashlight that input end 21 is imported transfers to the different fiber 221 of output terminal 22.

Output terminal 22 comprises a multi-core fiber holder 222, multifiber 221, collimation lens 223, an inner sleeve 224, an outer tube 225 and how fine tail part protection frame 226, and wherein multifiber 221 all has an exposed end 2211; This multi-core fiber holder 222 comprises a fixing-holding rack 2220 and an outer fixing pipe 2222 in one, should be evenly distributed with a plurality of grooves 2221 in interior fixing-holding rack 2220 peripheries, the exposed end 2211 of multifiber 221 places respectively in this groove 2221, in being set in, outer fixing pipe 2222 outside the fixing-holding rack 2220, is used for accommodating and protecting the exposed end 2211 of this multifiber 221; Should how fine tail part protection frame 226 be ends of fixing-holding rack 2220 in being fixed in by modes such as viscose glues; sleeve column 2261 and outer sleeve 2262 in it comprises; the non-exposed part 2212 of

interior sleeve column

2261 and 2262 fixing multifibers 221 of outer sleeve; the integral installation distribution structure and the input end of output terminal 22 are basic identical, are not described in detail in this.

Base 26 comprises a body 260,2 first mount pads 261 and one second mount pad 262.This 2 first mount pad 261 be arranged in parallel, and its top relative position is equipped with a mounting hole (indicate) and is used for installing and aims at input end 21 and output terminal 22.Second mount pad 262 and first mount pad 261 be arranged in parallel, and a gathering sill 2622 is offered in the one side, and the cross section of the guide rod 253 of the cross section of this gathering sill 2622 and prism holding board 251 is identical, are convenient to match with the guide rod 253 of prism holding board 251.

Drive unit 27 comprises a driving arrangement 271 and two connecting links 272, this two connecting link 272 connects prism holding board 251 and driving arrangement 271 respectively, to drive of gathering sill 2622 slips of prism holding board 251 along second mount pad 262, thereby make the prism of the different directions assembling of prism array 23 place light path, switching-over light path between the different output terminals of optical fiber 221.

See also Fig. 7 and Fig. 8, the input optical signal of input optical fibre 211, be parallel beam 30 through collimation lens 213 collimations, parallel beam 30 reflects the directional light 31 directive collimation lenses 223 that become a small angle with optical axis through prism 231, enters an optical fiber of output optical fibre 221 after collimation lens 223 is assembled.Drive via drive unit and to make the prism 232 of other direction assembling place light path, make light beam 30 reflect into the parallel beam 32 of other direction, after collimation lens 223 is assembled, enter another output optical fibre 221 through prism 232.

Be appreciated that the prism that drives the different directions assembling of prism arrays 23 via drive unit 27 places light path, the prism of this different directions assembling can switch to the input optical signal of optical fiber 211 the different output optical fibres 221 of output terminal 22.Therefore, this mechanical type optical converting device can be input to the light signal of input end 21 inputs arbitrary output optical fibre of output terminal 22, because of the light path light path has reversibility, so it also can reverse transfer.

Claims

1. mechanical type optical converting device, it comprises: an input end, an output terminal and a drive unit, this input end comprises an input optical fibre and an optical fiber contact pins and collimation lens, this optical fiber contact pins is accommodated this input optical fibre of fixing, and this collimation lens is in order to collimate the flashlight of this input optical fibre input; It is characterized in that: this output terminal comprises many output optical fibres, a multi-core fiber holder and one and the collimation lens that is oppositely arranged of multi-core fiber holder, this multi-core fiber holder is accommodated this multifiber of fixing, and this drive unit drives the conversion that the prism translation realizes light path.

2. mechanical type optical converting device as claimed in claim 1, it is characterized in that it further comprises a base, this base comprises 2 first mount pads and one second mount pad, and wherein this second mount pad is parallel to the first mount pad setting and between 2 first mount pads.

3. mechanical type optical converting device as claimed in claim 1, it is characterized in that it further comprises a prism holder, this prism holder comprises a prism holding board, all offers a plurality ofly so that the prism mounting hole to be installed on it, and this prism places this mounting hole respectively.

4. mechanical type optical converting device as claimed in claim 1 is characterized in that this input end further comprises an inner sleeve and an outer tube, solid optical fiber contact pins of this inner sleeve cover and collimation lens, and this outer tube is sheathed on side outside the inner sleeve.

5. mechanical type optical converting device as claimed in claim 1 is characterized in that this output terminal further comprises an inner sleeve and an outer tube, solid multi-core fiber holder of this inner sleeve cover and collimation lens, and this outer tube is sheathed on the inner sleeve outside.

6. mechanical type optical converting device as claimed in claim 2 is characterized in that this 2 first mount pad opposing parallel setting, and its top all has the input end of installation and output terminal one through hole.

7. mechanical type optical converting device as claimed in claim 3 is characterized in that this second mount pad assembling prism holder, and places between two collimation lenses of input end and output terminal.

8. mechanical type optical converting device as claimed in claim 1 is characterized in that this drive unit further comprises a driving arrangement and two connecting links, and this driving arrangement drives the prism holding board in diverse location via two connecting links.

9. mechanical type optical converting device as claimed in claim 1 is characterized in that this multi-core fiber holder comprises a fixing-holding rack and an outer fixing pipe in one, and this outer fixing pipe is fixed in the outside of fixing-holding rack in this.

10. mechanical type optical converting device as claimed in claim 9 is characterized in that offering a plurality of grooves on the fixing-holding rack in this, holds this multifiber respectively.