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Mechenical-optical switch

An optical switch and mechanical technology, applied in the direction of coupling of optical waveguides, can solve the problems of increased switch cost, large switch size, inconvenient optical communication system integration, etc., and achieve the effects of improved production efficiency, low insertion loss, and simple and reasonable structure.

Inactive Publication Date: 2002-02-27
上海上诠光纤通信设备有限公司
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  • Abstract
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Problems solved by technology

In this invention, since a prism must be located between two self-focusing lenses when the prism is moved out of the optical path, the distance between the two self-focusing lenses is relatively wide, resulting in a large size of the entire switch, which cannot meet the Modern communication systems require smaller and smaller switch sizes; secondly, in this invention, each prism needs to be coated with high-reflection film on two right-angled surfaces, which increases the cost of the switch; in addition, in this invention, the input end of the optical signal The and output terminals are located on both sides of the switch, which is not convenient for the integration of the switch in the optical communication system

Method used

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Embodiment Construction

[0028] structure as above and figure 1 , 2 , 3, 4, 5, and 6. Wherein the relay 11 is single pole double throw, the rated voltage is 5 volts, and the rated current is 40 mA. Both the movable prism 6 and the fixed prism 7 are isosceles right-angle total reflection prisms made of K9 glass, and the inclined surfaces are coated with an anti-reflection film. The mechanical optical switches with the above structures 1×2 and 2×2 are put into practical use. It is used in the optical add / drop module (OADM) of the optical communication system. The characteristic dimensions of the optical switch structure of the present invention are 45 millimeters in length, 18 millimeters in width, and 14 millimeters in height. Typical specifications are: switching time is 8 milliseconds, insertion loss is less than 0.6 decibels (dB), switching repeatability ± 0.03 dB, echo The loss is greater than 62dB, and the expected service life is 107 times. These data fully demonstrate that the optical switc...

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Abstract

The present invention relates to a mechanical optical switch which is mainly used in optical communication system, optical fibre network system, optical fibre measurement system or instrument and optical signal exchange in optical fibre sensing system. Said invention incldues fixed prism and collimator gripper directed at oblique plane of fixed prism. All the two outgoing collimators and one incoming collimator or two incoming collimators are mutually parallelly placed in same collimator gripper along central axis. It also possesses a movable prism, said movable prism is controlled by relay, and can be moved into or moved out of the optical circuit. The movable prism and fixed prism are isosceles rectangular total reflection prism, and the oblique plane is incident face of light, and saidincident face is coated with anti-reflection film, and two rectangular plane are reflecting plane, and two rectangular crest lines of movable prism and fixed prism are mutually perpendicular in the optical circuit. Its switching time is short, and its typical switching time can be 6 ms.

Description

Technical field: [0001] The invention relates to a mechanical optical switch, which is mainly used in the exchange of optical signals in optical communication systems, optical fiber network systems, optical fiber measurement systems or instruments, and optical fiber sensing systems. Background technique: [0002] In the optical fiber network system, the transmission of information is realized through the transmission of optical signals in the optical fiber. Although the transmission of optical signals in optical fibers has some similarities with the transmission of electrical signals in metal wires, it is well known that switching optical signals from an input fiber to a different output fiber is faster than switching an electrical signal through an electronic switch. Much harder. [0003] When the electrical signal is transmitted in the metal wire, it can be very easily connected, but the optical signal must have very precise coupling from the input fiber to the output fib...

Claims

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Application Information

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IPC IPC(8): G02B6/34
Inventor 谢虎钱玉彬陈海荣黄立天
Owner 上海上诠光纤通信设备有限公司
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