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A high port number wavelength selective switch

A wavelength selective switch and port technology, applied in the coupling of optical waveguides, instruments, optical guides, etc., can solve problems such as increasing the overall cost of the system and failing to meet the requirements of the rapid development of ROADM systems.

Active Publication Date: 2019-12-31
GUANGXUN SCI & TECH WUHAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is necessary to realize more than 20 ports, it is usually necessary to cascade multiple WSS devices, but this cascading method will increase the complexity of the networking structure of the ROADM system, and will also increase the overall cost of the system, which cannot meet the ROADM requirements. Rapid System Development Requirements

Method used

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  • A high port number wavelength selective switch
  • A high port number wavelength selective switch
  • A high port number wavelength selective switch

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0043] The principle of the traditional WSS optical path based on LCOS technology is as follows: figure 1 and figure 2 as shown, figure 1 is a schematic diagram of the principle of the optical switching plane, figure 2 It is a schematic diagram of the principle of the sub-wavelength plane. The optical signal enters the WSS optical system from the input part 1 of the array collimator, and after passing through the polarization conversion unit 3, the optical signal changes from random polarized light to linearly polarized light; shape, and incident on the diffraction grating 5, the light of...

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Abstract

The invention relates to a high-port-number wavelength selection switch. The switch comprises an input optical path part, an output optical path part and an optical path deflection part; the optical path deflection part comprises at least two cascade LCOS chips, a light spot conversion system is disposed between each two adjacent LCOS chips, and the light spot conversion systems achieve consistency of light spots of the cascade LCOS chips; and each light spot conversion system comprises three column lenses sequentially disposed along an optical path, wherein the column lenses at two ends of the optical path form a double-lens 4f system mode so that wavelength-division plane light spot conversion is achieved, and light switching plane light spot conversion is achieved through the column lens locating at the middle of the optical path. An appropriate solution scheme can be provided for research and development of a high-port WSS device through cascading of the multiple LCOS chips.

Description

technical field [0001] The invention relates to an optical communication device, in particular to a wavelength selection switch, in particular to a wavelength selection switch with a high port number and a flexible and adjustable frequency interval. The invention belongs to the field of optical fiber communication. Background technique [0002] Reconfigurable Optical Add / Drop Multiplexer (Reconfigurable Optical Add / Drop Multiplexer, hereinafter referred to as ROADM) is a key network node of an intelligent optical network, which supports adding and dropping or blocking of arbitrary wavelength services, and can realize communication services through remote control of software Arbitrary expansion, with great flexibility. A wavelength selective switch (Wavelength Selective Switch, hereinafter referred to as WSS) is a core photonic device that constitutes a ROADM node, which can realize arbitrary transmission and switching of any wavelength to multiple directions. In the network...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/293G02B6/32
CPCG02B6/29311G02B6/2938G02B6/32
Inventor 袁志林杨睿杨柳宋丽丹郭金平王凡唐丽红马雨虹
Owner GUANGXUN SCI & TECH WUHAN