A Wavelength Division Multiplexing Optical Receiver System Based on Microring Resonator

Abstract

The invention relates to a wavelength division multiplexing optical receiver system based on a micro-ring resonator, so as to solve the problems of large integration size, high power consumption and polarization sensitivity of the optical receiver in the current wavelength division multiplexing technology. The system includes an optical coupler and n optical receiving channels, where n is the number of optical signals of different wavelengths in the fiber, n≥1; the optical coupler is a two-dimensional orthogonal grating coupler or an edge coupler; the optical receiving channel includes a micro-ring Resonator filter, detector and transimpedance amplifier; microring resonator filter consists of two cascaded microring resonators, each microring resonator filter is a wavelength filtering out channel, and the radius of the microring resonator is equal to The relationship between the wavelength of the filtered optical signal is: mλ m =2πrn eff , where m is the resonance order, λ m is the resonance wavelength of the mth order, r is the radius of the microring resonator, n eff is the effective refractive index of the microring resonator; the detector is used to convert the optical signal into an electrical signal, which is amplified by a transimpedance amplifier and then output.

Description

technical field [0001] The invention relates to a wavelength division multiplexing optical receiver, in particular to a wavelength division multiplexing optical receiver system based on a micro-ring resonator. Background technique [0002] With the improvement of the quality of life, the popularization of personal terminal equipment, the rapid growth of the communication data of the huge network user group, the demand for expanding the capacity of the communication system in modern society is more and more urgent. Among various means of expanding optical interconnection and optical communication, wavelength division multiplexing (WDM) technology can improve the efficiency of signal transmission, and at the same time, it is very convenient to expand channels in existing optical fiber channels to add new services, which has attracted people's attention. [0003] The optical wavelength division multiplexing technology multiplexes the light of different wavelengths through the m...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of large integrated size, large power consumption and polarization sensitivity of optical receivers in the current wavelength division multiplexing technology, and propose a wavelength division multiplexing optical receiver system based on microring resonators, integrated While realizing the function of wavelength division multiplexing optical receiver, it has the advantages of insensitivity to polarization, high sensitivity, large bandwidth, low power consumption and simple structure

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