A m×n port roadm based on composite silicon-based liquid crystal and its control method

Abstract

The invention discloses an M*N port ROADM based on a composite silicon-based liquid crystal and a control method thereof. An M*N port reconfigurable optical add-drop multiplexer comprises an optical fiber collimator array which is formed by arranging M+N optical fiber collimators, a first Fourier transform optical lens, a volume grating, a second Fourier transform optical lens, a first silicon-based liquid crystal chip LCoS, a reflector, a second LCoS, and a thrid LCoS; the third LCoS generates +-1 order diffraction at the same time of conducting first azimuth coding, and the second LCoS and the third LCoS conduct second azimuth coding to achieve low loss interconnection of any wavelength path optical signals from any input port to any output port. According to the M*N port ROADM based on the composite silicon-based liquid crystal and the control method thereof, a non-blocking optical cross connection function of M*N ports can be achieved, the M*N port ROADM based on the composite silicon-based liquid crystal and the control method thereof have the advantages of being simple in structure, easy to achieve, and adjustable in pass-band performance; a flexible spectrum is supported, remote software control can be conducted, and the M*N port ROADM can be individually used as a node of an intelligent wavelength switched optical network.

Description

technical field [0001] The invention relates to an optical add-drop multiplexer, in particular to an M×N port reconfigurable optical add-drop multiplexer based on composite silicon-based liquid crystals and a control method thereof. Background technique [0002] The high port count M×N port reconfigurable optical add-drop multiplexer ROADM and multi-dimensional optical interconnection OXC equipment that can be remotely controlled by software and has multiple input and output ports are ideal for building intelligent software-defined reconfigurable optical networks. The key core components have extremely important application prospects and international market value, and have attracted extensive attention from major optical communication research institutions and device and equipment suppliers in the world. In recent years, the number of relevant research results and published patented technical solutions has shown a sharp upward trend, and the relevant core technical solution...

AI Technical Summary

Problems solved by technology

Among them, the fourth-generation ROADM developed by Huawei has the highest number of ports reported so far, but its internal optical system design is similar to the series connection of two 1×8WSSs, so it contains two sets of almost identical optical systems, resulting in the The number of optical components used is large, and the system composition is relatively complex

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