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Optical switch

An optical switch and optical fiber technology, applied in the field of optical fiber communication, can solve the problems of large size, high price and complex structure of optical switch devices, and achieve the effects of simple structure, fast switching speed and small product volume

Pending Publication Date: 2021-12-03
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For crystal-type optical switches, the switching speed is faster, but in half of the cases, the structure is more complicated and the price is higher; and the fiber output method is basically both ends of the fiber output, and the size of the optical switch device is relatively large.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] like figure 1 or image 3 , The present invention sequentially includes three fiber collimators, microlens 4, 5,1 prism / 4 plate 7 6,22.5 ° Faraday rotator and a mirror plate 8;

[0029] The three fiber collimator comprises three optical heads 1 are sequentially connected together, birefringent crystal 2 and the 1 / 2 wave plate 3 group; three optical fibers of the optical head 1 in three, wherein an input optical fiber end, the remaining two optical fiber light output end;

[0030] The quarter-wave plate 6 and the optical axis direction between the angle of Faraday rotation 22.5 ° 7 base sheet is 22.5 degrees, 22.5 ° Faraday rotator single sheet 7 times the optical signal passes through polarization rotation angle of 22.5 degrees ;

[0031] like figure 1 1x2 optical switch is unilateral, i.e., the optical switch between the ports a-> b and a-> c handover.

[0032] A port to port transmission b: the optical signal from the left upper end (a port) of optical head 1 by the thre...

Embodiment 2

[0036] like figure 2 , image 3 or Figure 4 , The present invention sequentially includes four fiber collimator micro-lens 4, a prism 5, 1 / 4-wave plate 7 6,22.5 ° Faraday rotator and a mirror plate 8;

[0037] The fiber collimator comprises four sequentially connected together in four-fiber head, the birefringent crystal 2 and the 1 / 2 wave plate group 3; four optical fibers of the four-fiber head, wherein two optical fiber light input end the remaining two optical fiber light output end;

[0038] The quarter-wave plate 6 and the optical axis direction between the angle of Faraday rotation 22.5 ° 7 base sheet is 22.5 degrees, 22.5 ° Faraday rotator single sheet 7 times the optical signal passes through polarization rotation angle of 22.5 degrees ;

[0039] In group 3 1 / 2 wave plate, the optical axis of the left four 1 / 2 wave plate in the horizontal direction or vertical direction, the horizontal axis and the right four half-wave plate direction of 45 °.

[0040] figure 2 2x2 optica...

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PUM

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Abstract

The invention discloses an optical switch. The optical switch comprises a three-fiber collimator, a micro lens, a prism, a 1 / 4 wave plate, a 22.5-degree Faraday rotating plate and a reflecting mirror which are sequentially distributed; the three-optical-fiber collimator comprises a three-optical-fiber head, a birefringent crystal and a 1 / 2 wave plate group which are connected together in sequence; in three optical fibers of the three-optical-fiber head, one optical fiber serves as an optical input end, and the other two optical fibers serve as optical output ends; the angle between the optical axis direction of the 1 / 4 wave plate and the bottom edge of the 22.5-degree Faraday rotating plate is 22.5 degrees, and the polarized light rotation angle of the 22.5-degree Faraday rotating plate to a single passing optical signal is 22.5 degrees; and signal light can be switched among different light output ends by changing the rotation direction of the polarization state of polarized light in the 22.5-degree Faraday rotating plate. The optical switch is a crystal type optical switch, and the switching speed is high; the structure of the optical switch is simple, and the cost of the optical switch is low; and single-side fiber output is realized, and the product size is small.

Description

Technical field [0001] The present invention relates to optical fiber communication, and in particular relates to an optical switch. Background technique [0002] For mechanical optical switches, switching speed is slow, and the ends are substantially slender, large volumes of the optical switch device. Crystal optical switch for switching speed, but the more complicated the higher the price of a half case of the structure; and a fiber embodiment also basically large, the volume of the optical switch device of fiber ends. Inventive content [0003] Object of the present invention to provide a quick one speed, small volumes of the optical switch. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] An optical switch, which in turn comprises three fiber collimators, a microlens, a prism, a 1 / 4-wave plate, 22.5 ° Faraday rotator and a mirror plate; [0006] The fiber collimator comprises three successively connected together...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/09
CPCG02F1/09
Inventor 吴砺徐云兵王宗源陈卫民蔡宏铭李阳
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD