Wavelength choice photoswitch based on tunable micro-ring resonators

Abstract

The invention discloses a wavelength choice photoswitch based on tunable micro-ring resonators, wherein each tunable micro-ring resonator only acts on one specific wavelength, and each tunable micro-ring resonator enables the propagation direction of light with a specific wavelength entering the input end of the tunable micro-ring resonator to be unchanged or deviate so that light path switching can be achieved. The wavelength choice photoswitch comprises two tunable micro-ring resonator arrays, wherein the first tunable micro-ring resonator array is a one-dimensional array, the number of the tunable micro-ring resonators in the first tunable micro-ring resonator array is equal to the number of wavelengths contained in input optical signals, and the tunable micro-ring resonators in the first tunable micro-ring resonator array work independently to separate the input light signals one by one according to the wavelength; the second tunable micro-ring resonator array is a two-dimensional array, the number of lines of the two-dimensional array is equal to the number of output ports of the wavelength choice photoswitch, the number of columns of the two-dimensional array is equal to the number of wavelengths contained in the input optical signals, the two-dimensional tunable micro-ring resonator array works in a cooperative mode to recombine the optical signals, obtained after separation conducted by the one-dimensional array according to the wavelength, according to the wavelength freely, and then light is output through the output end of the wavelength choice photoswitch.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a wavelength selective optical switch based on a tunable microring resonator. Background technique [0002] Wavelength-Division Multiplexing (WDM, Wavelength-Division Multiplexing) optical fiber communication system has become the basic platform of modern high-speed broadband communication network. As the core equipment of the optical fiber communication system, the use of Reconfigurable Optical Add-Drop Multiplexer (ROADM, Reconfigurable Optical Add-Drop Multiplexer) brings more convenience for business development and lower operation cost to network operation. ROADM adds, drops and multiplexes signals in units of wavelengths in the optical domain. Because of its transparency, flexibility and scalability, it is increasingly favored by network operators. [0003] After years of development, the core components of ROADM equipment have undergone two generations...

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a wavelength-selective optical switch based on a tunable microring resonator, which can be used to solve the problems of existing wavelength-selective optical switches, such as large volume, high cost, poor stability, and difficult adjustment and control.

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