Coherent optical communication system based microcavity optical soliton crystal frequency comb

Abstract

The invention belongs to the technical field of coherent optical communication systems, and provides a coherent optical communication system based on a microcavity optical soliton crystal frequency comb for solving the problems of high laser cost, and poor consistency of local oscillator light and signal light frequency in the existing coherent optical communication system technology. According tothe coherent optical communication system provided by the invention, an optical soliton crystal frequency comb is used as a light source of the communication system at a transmitting end, dozens or more optical carriers can be generated at the same time, thereby reducing the demand for the narrow linewidth laser at the transmitting end of the coherent optical communication system, and compared with the traditional coherent optical communication system, the cost is greatly reduced; another optical soliton crystal frequency comb source is used for providing a local oscillator light signal for acoherent optical demodulator at a receiving end, and the two optical soliton crystal frequency comb sources in the system use the light signal emitted by the same laser as the pumping light, becausethe local oscillator light and the optical carrier signal have approximately the same frequency, so the consistency is good, the coherence is good, the emission wavelength of the laser does not need to be accurately controlled, and the performance requirements of the system for the laser is reduced.

Description

technical field [0001] The invention belongs to the technical field of coherent optical communication systems, and relates to an ultra-high-capacity parallel coherent optical communication system, in particular to a parallel coherent optical communication system that uses an optical frequency comb source to generate The microcavity optical soliton crystal frequency comb of the pump light is used as the optical signal carrier and the coherent optical communication system for demodulating the local oscillator light. Background technique [0002] In the field of optical communication, higher receiving sensitivity, larger bandwidth, longer transmission distance and lower energy consumption are the eternal goals of optical communication systems. With the explosive growth of information volume, coherent optical communication systems Its advantages of high spectrum utilization and sensitivity have been rapidly commercialized. In coherent optical communication, the frequency stabil...

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Problems solved by technology

[0005] Based on the above background, the present invention provides a coherent optical communication system based on a microcavity optical soliton crystal frequency comb, which uses a pump light to simultaneously generate an optical carrier and local oscillator light with the same frequency and polarization, aiming to solve the problem of existing coherent optical In the communication system technology, the cost of the laser is high, and the frequency consistency between the local oscillator light and the signal light is poor

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