Device of full light network reusing segment shared protection

A shared protection and all-optical network technology, applied in the field of communication equipment, can solve problems affecting service transmission and poor service optical signal-to-noise ratio, and achieve the effect of ensuring optical power, low optical insertion loss, and low cost

Inactive Publication Date: 2004-10-20
徐州市贾汪区韵谨工贸有限公司
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Problems solved by technology

Devices to realize multiplex section protection in all-optical networks, such as figure 1 Shown: The optical layer multiplex section protection optical path connection device shown in the figure has certain shortcomings in protecting the route. From the perspective of the entire optical path power budget, the protected wavelength route must be amplified by a 2-stage optical amplifier inside a single node , so that after multi-level cascading, the service optical signal-to-noise ratio of the entire system will become very poor, affecting service transmission

Method used

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  • Device of full light network reusing segment shared protection
  • Device of full light network reusing segment shared protection
  • Device of full light network reusing segment shared protection

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with accompanying drawing:

[0031] Such as image 3 As shown, the device of the present invention includes four optical fiber amplifiers, four multiplexing and demultiplexing filters, four optical switches and four filters. During normal operation, the first optical fiber amplifier 101A sends the light to the first filter after amplifying the light. 105A, the first filter 105A divides the input light into two groups of wavelengths, one group is the working wavelength W, and the other group is the protection wavelength P, and the working wavelength W passes through the first optical switch 104A, the first and second multiplexer / demultiplexer filters 102A And 102B, the second optical switch 104B and the second filter 105B are output to the second optical fiber amplifier 101B; the protection wavelength P is connected with the third optical switch 104C, and then through the second attenuator 103B, the fourth...

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Abstract

The invention discloses a simple and small optical loss protection device including four amplifier of optical fiber with erbium being mixed into, four filters, four optical switches and four red and blue band filters. In normal operation, four multiplexing optical switches are straight through. Working wave in A direction through A directional input optical switch in low part of node, join/dividing filter, B directional output optical switch, red and blue band filters and B directional output. Protection wave of A directional input is connected to optical switch in B directional input, then, passing through attenuator and connecting to optical switch in A directional output, through red and blue band filters in B direction output, and B direction output. Working wave in B directional input has its path accordingly.

Description

technical field [0001] The invention relates to a communication device, more specifically to an optical fiber communication device. Background technique [0002] At present, the multiplex section sharing protection mechanism of the all-optical network is based on the multiplex section sharing protection in SDH technology, but the former implements protection switching on the optical layer (such as using an optical switch), while the latter implements protection switching on the electrical layer. For example, the function provided by the integrated circuit chip is used to realize the service protection switching of the electrical layer by using the unique signal frame structure of the SDH signal. In order to realize the shared protection of the multiplex section of the optical layer in the all-optical network, it is necessary to solve the problems of wavelength routing and optical power balance in the all-optical network. Devices to realize multiplex ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/39H04B10/032H04B10/25
Inventor 魏晓强叶兵
Owner 徐州市贾汪区韵谨工贸有限公司
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