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40†ù40 wave length no blocking optical switch

A non-blocking optical switch and electro-optical switch technology, which is applied in the field of optical fiber communication, can solve the problems of low integration of optical switches, high processing precision of birefringent crystals, and restrictions on large-scale development.

Inactive Publication Date: 2003-09-17
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical switch has high requirements on the processing precision of the birefringent crystal, and the integration degree of the optical switch is not high, which limits the development in the direction of large-scale

Method used

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  • 40†ù40 wave length no blocking optical switch
  • 40†ù40 wave length no blocking optical switch
  • 40†ù40 wave length no blocking optical switch

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Embodiment Construction

[0012] The specific implementation of the device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] figure 1 It is a schematic diagram of the overall structure of the 40×40 wavelength non-blocking optical switch 101 . Such as figure 1 As shown, the 40×40 wavelength non-blocking optical switch 101 of the present invention includes 4 input wavelength division multiplexing (WDM) optical signals (I 1 -I 4 ) and four output wavelength division multiplexed (WDM) optical signals (O 1 -O 4 ). Each input WDM optical signal I m (m=1, 2, 3, 4) carrying 10 wavelength-multiplexed channels (I m1 , I m2 ,..., I m10 ), where the optical signal I mn (n=1, 2, ..., 10) has a wavelength of λ n ; each output WDM optical signal O h (h=1, 2, 3, 4) also carry 10 wavelength-multiplexed channels (O h1 , O h2 ,...,O h10 ), where the optical signal O hn (n=1, 2, ..., 10) has a wavelength of λ n . The wavelength non-blocking...

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Abstract

A 40X40 optical switch without wavelength blocking is composed of 4 dual-doped lithium niobate crystals and 4 optical fibre couplers, all of which are linked by signal transmission optical fibres to form a wavelength routing module. An optical wave demultiplexer and a 10X4 electro-optical switch array are integrated on each crystal, resulting in 40 wavelength channels routing without blocking. Its advantages are simple structure, low insertion loss, high response speed, and no environmental interference.

Description

technical field [0001] The invention belongs to the field of optical fiber communication, in particular to a 40*40 wavelength non-blocking optical switch, which is suitable for optical communication all-optical cross-connection network of wavelength division multiplexing and optical switch system for optical path switching. Background technique [0002] As the optical transport network develops towards high speed and large capacity, the performance of the switching element as the core device of the system node becomes the key to determine the performance of the node and the network. Whether it is the structure of the network or the recovery under network failure, the intelligent control of the optical switch is required. Large-capacity, high-speed switching, transparent, and low-loss optical switches will play a more important role in the development of optical networks. [0003] Prior art [1] (see JOURNAL OF LIGHTWAVE TECHNOLOGY, Vol.16, No.4, APRIL 1998, P650-655) propose...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/26G02F1/03H04J14/02
Inventor 董前民刘立人刘德安祖继锋栾竹张娟宋哲
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI