CN1421718A - Optical switch - Google Patents

Abstract

The optical switch includes one or several light input assembly, several light output assemblies to receive the light signal transmitted by the light input assembly, one reflecting assembly to reflect the light signal transmitted by the light input assembly to the light outupt assemblies, one driver to drive the reflecting assembly, one fixing seat and one connector to connect the reflecting assembly and the driver. The optical switch of the present invention has high efficiency. Only one displacement vector is considered in solving the problem of loosened motor to result in disalignment.

Description

Photoswitch

Technical field

The invention relates to a kind of photoswitch, particularly carry out the photoswitch that light switches contraposition about a kind of light reflection subassembly that utilizes.

Background technology

Photoswitch (Optical Switch) is for making the light signal be switched to the device of purpose output port by an input port (Port).It has the function that switches light transmits route, to be used for switching signal source, reception terminal and trouble spot etc.Fiber optic switch is an assembly that optical communication is important, generally can be applicable to optical communication networking node light exchange connector (OpticalCross Connect, OXC), optical access multiplexer (Optical Add ﹠amp; Drop Multiplexer, full light exchcange core (Switch Core) technology of system such as OADM) is to finish functions such as error return (Restoration), exchange.

Main photoswitch is to utilize step motor machine powers such as (Step Motor) to come moving fiber at present, to change light path.Insert loss (Insert Loss) and cross-talk (Cross Talk) though it can reduce, it is bulky, be difficult for and other optical communication assembly integration, can't meet optical communication networking node processing efficient high speed, highly integrated demand gradually.

As shown in Figure 1, existing photoswitch 4 is the plane photoswitches more than one 1 pairs, and light output precision 42 is arranged on the semicircular arc seat stand, and light input module 41 is sent to the light signal that it transmitted in the light output assembly 42.As shown in Figure 2, another existing photoswitch 5 is the vertical-type photoswitches more than one 2 pairs, and light input module 51 transmission light signals are to light output precision 52.As shown in Figure 3, another existing photoswitch 6 is wheel type photoswitches, and light input module 61 its light signals of transmission are to light output precision 62.

Shown in Fig. 1,2 and 3, all use a drive unit (as step motor) among the figure, be positioned at the optical fiber that central authorities import with rotation, its optical fiber with the periphery is aligned.This kind photoswitch needs point-device drive unit, that is the tolerance variation of the X of this drive unit, Y, three sense of displacement of Z and Θ x, two angle directions of Θ y must be very little, just can keep the degree of accuracy that aligns between two optical fiber.This kind drive unit cost usually is very high and wayward, causes the increase of insertion loss or the energy variation of each delivery channel easily.So existing photoswitch has the problem of contraposition difficulty, and its adjustment also is not easy when producing.

Summary of the invention

In order to overcome the deficiencies in the prior art, the purpose of this invention is to provide the accurate photoswitch of a kind of simple structure and contraposition.

For reaching above-mentioned purpose, the invention provides a kind of photoswitch, comprise: more than one smooth input module; A plurality of smooth output precisions are in order to receive the light signal that this light input module is transmitted; One reflection subassembly, the light signal that this light input module can be transmitted reflexes in the light output assembly; And a driver, in order to driving this reflection subassembly, to reflect light signal that this light input module transmitted to the light output assembly.

In other words, photoswitch of the present invention, it comprises more than one smooth input module, a plurality of smooth output precision, a reflection subassembly, a driver, fixedly seat stand and a connector.Wherein, the driver drives reflection subassembly makes the reflection via reflection subassembly of light signal that the light input module transmitted, reaches in the defeated light output precision of institute's tendency to develop.

Compared with prior art, simple more good more because the optimal mode of photoswitch is a mechanism action, the repeatability that each channel switches just can be high.In the present invention, provide a kind of photoswitch, only need utilize single optical module, can reach same effect.And also only need to consider a motion vector that it is loosening and cause the problem of contraposition misalignment to solve motor.

Description of drawings

Below in conjunction with drawings and Examples the present invention is carried out in detail:

Fig. 1 is the schematic illustration of existing photoswitch;

Fig. 2 is the schematic illustration of existing another photoswitch;

Fig. 3 is the schematic illustration of existing another photoswitch;

Fig. 4 A is the front elevation of photoswitch of the present invention;

Fig. 4 B is the side view of the photoswitch shown in Fig. 4 A;

Fig. 5 A is the front elevation of another photoswitch of the present invention;

Fig. 5 B is the side view of the photoswitch shown in Fig. 5 A.

Symbol description among the figure:

1 photoswitch

11 smooth input modules

12 smooth output precisions

13 reflection subassemblies

14 drivers

15 fixing seat stands

16 connectors

17 arrangement of components platforms

21 Porro prisms

22 Dao Weishi prisms

23 catoptrons

4 photoswitches

41 smooth input modules

42 smooth output precisions

5 photoswitches

51 smooth input modules

52 smooth output precisions

6 photoswitches

61 smooth input modules

62 smooth output precisions

Embodiment

Hereinafter with reference to relevant drawings, a kind of photoswitch according to preferred embodiment of the present invention is described, wherein identical assembly will be illustrated with identical reference marks.

Please refer to Fig. 4 A and 4B, the photoswitch 1 of present embodiment comprises a smooth input module 11, a plurality of smooth output precision 12, a reflection subassembly 13, a driver 14, fixedly seat stand 15 and a connector 16.

Wherein, light output assembly 12 is in order to receive the light signal that light input module 11 is transmitted.In the present embodiment, this light input module 11 can be the optical fiber input module, and light output assembly 12 also can be the optical fiber output precision.

This reflection subassembly 13 reflexes to the light signal of this light input module 11 in the light output assembly 12.In the present embodiment, this reflection subassembly 13 can be a Porro prism (Porro Prism) 21 or Dao Weishi prism (Dove Prism) 22 or by orthogonal two assemblies that catoptron 23 is constituted.Porro prism 21 is a right angle and equilateral prism, and Dao Weishi prism 22 is Dove prisms.

This driver 14 is in order to driving this reflection subassembly 13, and it is fixed in one fixedly on the seat stand 15, by 14 of this drivers this reflection subassembly 13 is rotated.

This connector 16 is somebody's turn to do fixedly seat stand 15 and driver 14 in order to connect, and the power of this driver 14 is sent on this reflection subassembly 13, in order to do this reflection subassembly 13 of start.

Shown in Fig. 4 A, 4B, a directional ray that among the figure driver 14, connector 16 and reflection subassembly 13 is connected into is set at Y-axis, the directional ray that light input module 11 and light output precision 12 are connected into is set at X-axis, and is the Z axle perpendicular to the direction setting of X and Y-axis.Below all with this coordinate axis narration.

Shown in Fig. 4 A, light input module 11 is individually fixed on the arrangement of components platform 17 with light output assembly 12.Arrangement of components platform 17 is circular pedestals, and light input module 11 is arranged near the central point of arrangement of components platform 17 and for maintaining static; Light output assembly 12 be located on respectively light input module 11 around, its allocation position is shown in Fig. 5 B.Light signal in the light input module 11 via the reflection of reflection subassembly 13, is sent in the light output assembly 12.Utilize driver 14 rotary reflection assemblies 13, the light signal of light input module 11 is sent to respectively in the light output assembly 12 exactly, form the photoswitch more than 1 pair.

Because the reflection subassembly 13 in the present embodiment is that a Porro prism 21 or Dao Weishi prism 22 or are by orthogonal two assemblies that catoptron 23 is constituted, therefore it is in the scope of certain inclination, the output light signal that it reflects all is parallel to each other with input light signal.That is, when using photoswitch,, still can not influence the position of output light signal if driver 14 in Z and Y direction, produces the variation of displacement, the displacement that therefore can remove Z and Y direction changes.If when driver 14 produced the angle variable quantity of Θ x, Θ y direction, setting its value was 1 degree, then for the position of output light signal, only produced the displacement of about 0.001mm grade, so also can not consider the angle variable quantity of Θ x, Θ y direction.Though driver 14 has loosening easily problem, because input light signal is parallel with output light signal always, so can't cause the problem that aligns error.In motion vector, only need to consider the displacement of X-axis, the amount of shifting to of ascending the throne is one, makes the location of its photoswitch become more easy, also improves the output energy stability of photoswitch.

Please refer to Fig. 5 A and 5B again, this light input module 11 is two when above among the figure, and its characteristics and principle are identical with above-mentioned smooth input module.Driver 14 provides a power, and the fixedly reflection subassembly 13 of seat stand 15 is fixed in rotation, and the light signal of light input module 11 is sent in the light output assembly 12 photoswitch of formation multi-to-multi respectively exactly.

Photoswitch in the present embodiment is more than one 1 pairs and the switch of multi-to-multi, owing to only need to use single optical module, makes its structure become more simple.And because optical module of the present invention utilizes characteristics such as prism, therefore only noted a motion vector, made its adjustment when contraposition and production become more easy.

The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the protection domain of this patent its equivalent modifications of carrying out or change.

Claims (10)

1. photoswitch comprises:

More than one smooth input module;

A plurality of smooth output precisions are in order to receive the light signal that this light input module is transmitted;

One reflection subassembly, the light signal that this light input module can be transmitted reflexes in the light output assembly; And

One driver is in order to driving this reflection subassembly, to reflect light signal that this light input module transmitted to the light output assembly.

2. photoswitch according to claim 1 is characterized in that: this photoswitch also comprises a fixing seat stand, in order to fix this driver.

3. photoswitch according to claim 1 is characterized in that: this photoswitch also comprises a connector, in order to connect this reflection subassembly and this driver.

4. photoswitch according to claim 1 is characterized in that: this photoswitch also comprises an arrangement of components platform, and this light input module and light output assembly are disposed at respectively on this arrangement of components platform.

5. photoswitch according to claim 1 is characterized in that: this light input module is the optical fiber input module.

6. photoswitch according to claim 1 is characterized in that: the light output assembly is the optical fiber output precision.

7. photoswitch according to claim 1 is characterized in that: this reflection subassembly is a Porro prism.

8 photoswitches according to claim 1 is characterized in that: this reflection subassembly is one prestige formula prism.

9. photoswitch according to claim 1 is characterized in that: this reflection subassembly is formed by orthogonal two catoptrons.

10. photoswitch according to claim 1 is characterized in that: this driver is a motor.

Images