Ultra-high-speed coherent optical signal polarization demultiplexing and wavelength conversion system and control method

Abstract

The invention provides an ultrahigh-speed coherent optical signal polarization demultiplexing and wavelength conversion system and a control method. An optical filter is connected with a polarizationcontroller; a tunable laser is connected with a polarization beam combiner; the polarization controller is connected with a polarization maintaining optical fiber coupler; the polarization beam combiner is connected with the polarization maintaining optical fiber coupler; the polarization-maintaining optical fiber coupler is connected with a polarization-maintaining optical amplifier, the polarization-maintaining optical amplifier is connected with a polarization-maintaining high nonlinear optical fiber, the polarization-maintaining high nonlinear optical fiber is connected with a wavelength division demultiplexer, each output port of the wavelength division demultiplexer is connected with a coherent detector, the coherent detector is connected with an ADC, and the ADC is connected with adigital signal processing unit. According to the invention, polarization demultiplexing and wavelength conversion functions can be realized at the same time, processing and exchange of ultra-high-speed optical signals can be realized, and compatibility of multiple modulation systems can be realized.

Description

technical field [0001] The invention relates to the field of ultra-high-speed coherent optical communication, in particular to the simultaneous realization of polarization separation and wavelength conversion of polarization multiplexing signals in optical communication. Background technique [0002] With the continuous advancement of social informatization, the germination and development of emerging services such as ultra-high-definition video, virtual reality, cloud computing, and the Internet of Things have sharply increased demand for bandwidth. Business needs drive technological progress. The single-channel capacity of optical transmission has been increased from 10Gbit to 100Gbit. The next-generation ultra-100G optical transmission system is also brewing breakthroughs. At present, the long-distance transmission of the backbone network adopts high-order coherent modulation and polarization multiplexing to improve the channel. Capacity, such as DP-QPSK, DP-16QAM and oth...

AI Technical Summary

Problems solved by technology

The present invention overcomes the problem that the existing technology cannot simultaneously demultiplex and switch ultra-high-speed coherent polarization multiplexing signals, and innovatively provides a method for simultaneously realizing polarization demultiplexing and wavelength conversion of ultra-high-speed coherent optical signals, which solves the problem of optical -The ultra-high-speed optical signal processing and switching problems caused by the bottleneck of the electrical conversion rate provide a reliable guarantee for the transmission and switching of ultra-high-speed coherent polarization multiplexing signals in the backbone network and access network

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