CN203502622U

CN203502622U - 2*2 mechanical optical switch

Info

Publication number: CN203502622U
Application number: CN201320584813.0U
Authority: CN
Inventors: 姚凤岐
Original assignee: Guangxi Peace Jnc Electronics Technology Co Ltd
Current assignee: Guangxi Peace Jnc Electronics Technology Co Ltd
Priority date: 2013-09-23
Filing date: 2013-09-23
Publication date: 2014-03-26
Anticipated expiration: 2023-09-23

Abstract

The utility model relates to the field of optical devices, in particular to a 2*2 mechanical optical switch. The utility model comprises two four-fiber collimators. The glass prism can be freely inserted and left between two four-fiber collimators. At an off state, a first, second, fifth and sixth optical fiber beams are directly coupled to a seventh, eighth, third and fourth optical fiber beams respectively. At a insertion state, when the beam is offset by the glass prism, the first optical fiber is coupled to the third optical fiber and at the same time the first optical fiber from the second optical fiber is coupled to the fourth optical fiber; what is more, the fifth optical fiber is connected with the sixth optical fiber together, and the eighth optical fiber is connected with the seventh optical fiber together. The utility model only needs a shift optical component to guide the beam from one side to another to form a bypass status. Thus, the utility model can reduce the dimension of a fiber alignment and adjustment, to allow a greater tolerance of position and angle, therefore, the utility model can reduce the difficulty of packaging, and is particularly suitable for large-scale production.

Description

2 * 2 mechanical optical switches

Technical field

The optical device field that relates to of the present utility model, specifically 2 * 2 mechanical optical switches.

Background technology

Photoswitch is along selected optical fiber, to carry out a kind of device of communication for control light signal at fiber optic network.Desirable photoswitch needs low low, the good repeatability of optical insertion loss, long operation lifetime, little volume, and low cost.Light shutter device has become the important component part in the fiber optic network of today.

By mobile light-guide device, change the mechanical optical switch of light path, be widely used in present communication network.Its main cause is due to for other technology, and mechanical optical switch simple in structure is little to the distortion of passed light signal.For example, because present on-mechanical switching technique is the change based on light phase or polarization, so these technology just have the defect of polarization and wavelength dependence in itself, can cause larger distorted signals, and the increase along with the port number of new network system, the raising of modulating speed, it is more and more outstanding that the defect of these technology becomes.

In light shutter device, light signal or be all coupled in optical fiber, or fall with regard to total loss.Because the diameter of single-mode fiber only has 2 microns to 10 microns conventionally, and single-mode fiber to accept angle also quite little, so optical fiber is very large with the aligning difficulty of optical fiber.Because just depart from a little a little and can cause very large loss between optical fiber, so the accurate aligning of optical fiber and position maintenance are the main difficult technical in photoswitch.So the aligning of optical fiber and price and the reliability that package design has just determined mechanical optical switch.

In prior art, as Fig. 1 (publication number: US5742712A) provided the scheme that a kind of 2 * 2 mechanical light are opened.It is entered space free light path or left space free light path by mobile mirror, selects two kinds of switch situations.When mirror 20 is positioned at beyond light path, from the optical registration of optical fiber 22 to optical fiber 32, from the optical registration of optical fiber 30 to optical fiber 24.When mirror 20 is arranged in light path, from the optical registration of optical fiber 22 to optical fiber 24, simultaneously from the optical registration of optical fiber 30 to optical fiber 32.Because be the mode that adopts reflection, the light path that simultaneously reflects both sides realizes the intersection switching of light, is easy to occur deviation, and small imbalance in process of production and environment for use change all very sensitive.To production, service condition, require high.So existing 2 * 2 mechanical optical switches have reliability low, the defect that production cost is high.

Summary of the invention

The technical problems to be solved in the utility model is: solve in prior art, 2 * 2 mechanical optical switch reliabilities are low, the problem that production cost is high.

Concrete scheme of the present utility model is: a kind of 2 * 2 mechanical optical switches, is characterized in that:

1) comprise the first optical fiber group and the second optical fiber group, the first optical fiber group by glass capillary by the first optical fiber, the second optical fiber, the 5th optical fiber and six fibers along axially gathering together, the second optical fiber group by another root glass capillary by the 3rd optical fiber, the 4th optical fiber, the 7th optical fiber and the 8th optical fiber along axially gathering together;

2) in the first optical fiber group and the second optical fiber group the four fine collimating apparatuss by being located at respectively end mutually over against, the light beam of the first optical fiber, the second optical fiber, the 5th optical fiber and six fibers is directly coupled to respectively in the 7th optical fiber, the 8th optical fiber, the 3rd optical fiber and the 4th optical fiber;

3) between described four fine collimating apparatuss, be provided with the glass prism that can freely insert or leave, while inserting state, light beam is after described glass prism skew, from the first coupling fiber to the three optical fiber, simultaneously from the second coupling fiber to the four optical fiber;

4) described the 5th optical fiber and six fibers link together, and described the 8th optical fiber and the 7th optical fiber link together.

Further, described glass prism is to control by mechanical relay.

For further improving the reliability of photoswitch, described optical fiber adopts the optical fiber of low bend loss.

The utility model it adopted the mode reflecting to realize the switching coupling of light.Compare 2 * 2 traditional photoswitches and adopt the light path that a mobile optical element reflects both sides simultaneously to reach intersection situation, the utility model can reduce the dimension that optical fiber align regulates, and allows larger position and angle tolerance.Compact optical element, lowers the requirement to optical fiber align, so mechanical optical switch of the present utility model has fabulous stability and durability in the intersection switch application of two optical fiber to two optical fiber.Because mechanical optical switch of the present utility model can reduce the regulating step of optical fiber align and larger fabrication tolerance, it is well suited for the large-scale production for low price.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of 2 * 2 mechanical optical switches in prior art.

Fig. 2 mechanical optical switch schematic diagram of the present utility model.

Fig. 3 is another state (glass prism insertion) schematic diagram of Fig. 2.

Fig. 4 is the original wiring diagram of the utility model mechanical optical switch.

Fig. 5 the utility model 2 * 2 cross light switch wire connection figure.

Fig. 6 is an embodiment of the present utility model.

In figure: 1 ~ 8-first ~ eight optical fiber; 9-first collimator; 10-the second collimating apparatus; 9A glass capillary; 9B-lens; 10A-glass capillary; 10B-lens; 11-glass prism.

Embodiment

As shown in Figure 2 and Figure 3: 2 * 2 mechanical optical switches,

1) comprise the first optical fiber group and the second optical fiber group, the first optical fiber group by glass capillary 9A by the first optical fiber 1, the second optical fiber 2, the 5th optical fiber 5 and six fibers 6 along axially gathering together, the second optical fiber group by another root glass capillary 10A by the 3rd optical fiber 3, the 4th optical fiber 4, the 7th optical fiber 7 and the 8th optical fiber 8 along axially gathering together;

2) the first optical fiber group and the second optical fiber group by be located at respectively four fine collimating apparatus first collimators 9 of end and the second collimating apparatus 10 mutually over against, the light beam of the first optical fiber 1, the second optical fiber 2, the 5th optical fiber 5 and six fibers 6 is directly coupled to respectively in the 7th optical fiber 7, the 8th optical fiber 8, the 3rd optical fiber 3 and the 4th optical fiber 4;

3) between the lens 9B of first collimator 9 and the lens 10B of the second collimating apparatus 10, be provided with the glass prism 11 that can freely insert or leave, during insertion state, light beam is after glass prism 11 refraction skews, from the first optical fiber 1, be coupled to the 3rd optical fiber 3, from the second optical fiber 2, be coupled to the 4th optical fiber, simultaneously as shown in Fig. 4 solid line connects.

4) as shown in Figure 5, the 5th optical fiber 5 and six fibers 6 link together, and the 8th optical fiber 8 and the 7th optical fiber 7 link together.In figure, solid line is connected to the state that glass prism 11 leaves, and now the first optical fiber 1 communicates with the second optical fiber 2 and the 3rd optical fiber 3 communicates with the 4th optical fiber 4; Dotted line is connected to the state that glass prism 11 inserts, and now the first optical fiber 1 communicates with the 3rd optical fiber 3 and the second optical fiber 2 communicates with the 4th optical fiber 4.

Fig. 6 is the sterogram after the present embodiment assembling.The glass prism 11 of the present embodiment is to control by mechanical relay.

The optical fiber of the present embodiment adopts the optical fiber of low bend loss.

Claims

1.2 * 2 mechanical optical switches, is characterized in that:

4) described the 5th optical fiber and six fibers are to link together, and described the 8th optical fiber is to link together with the 7th optical fiber.

2. according to 2 * 2 mechanical optical switches described in claim 1, it is characterized in that: described glass prism is to control by mechanical relay.

3. according to 2 * 2 mechanical optical switches described in claim 1, it is characterized in that: described each optical fiber adopts the optical fiber of low bend loss.