A dual-polarization MIMO demodulation chip and optimization method for multi-dimensional optical fiber communication

Abstract

The application discloses a kind of dual-polarization MIMO demodulation chips and optimization methods for multi-dimensional optical fiber communication.Tunable laser is used to generate incident light beam, MEMS switch controls the incidence of light beam, polarization controller controls the polarization state of incident light, N×N silicon-based optical MIMO chip is used to demultiplex optical mode, photodetector is used to detect the light intensity of each signal, analog-to-digital converter is used to convert the optical signal obtained by detection into electrical signal, single-chip microcomputer is used to analyze the detected signal and optimize the voltage of multi-channel voltage source, multi-channel voltage source controls the dual-polarization thermo-optic phase shifter on N×N optical MIMO chip, so as to realize the demodulation of signal.At the same time, the application also discloses an optimization method of dual-polarization thermo-optic phase shifter and a simulation method of dual-polarization 3dB adiabatic coupler.The chip has the characteristics of dual-polarization, large bandwidth, high robustness, low loss, high integration and simple manufacturing.

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