Remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion

Abstract

The invention provides a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion. A same DFB laser light source is adopted to generate high-speed light millimeter waves and a remote high-frequency microwave oscillation source, so that phase noise can be effectively suppressed; the adopted DFB laser has the characteristics of narrow linewidth andhigh side mode rejection ratio, and can effectively suppress intensity noise; the remote high-frequency microwave oscillation source provided by the invention is novel in generation scheme, simple and feasible, and can effectively suppress noise. The method and the system can be used as an important reference for exploring and researching a high-bit-rate optical millimeter wave system, and can provide important support for deep research in the fields of microwave photonics, nonlinear optics, optical fiber communication, optical information processing, a new generation of information technology and the like.

Description

technical field [0001] The invention relates to a remote high-frequency microwave oscillation source system based on single-stage nonlinear spectrum expansion, which can be applied to the fields of microwave photonics, nonlinear optics, optical fiber communication, optical information processing, and new generation information technology. Background technique [0002] In recent years, various services such as big data, broadband streaming media, and 4G / 5G traffic have continued to increase rapidly, and the demand for high-speed and large-capacity wireless communication is increasing. In order to realize wireless broadband communication, the optical millimeter-wave communication technology Radio-over-Fiber (RoF), which combines optical fiber communication technology and high-frequency wireless access, was born as needed. At present, optical millimeter wave generation, transmission and reception technology, as a newly developed communication technology, has become one of the r...

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Problems solved by technology

[0004] The optical device generates light waves of different wavelengths to beat the frequency to generate an electric high-frequency local oscillator source. However, there is a large phase noise in this case; it can be seen that innovatively solve the problem of replacing the electric high-frequency local oscillator source and achieve high-speed It is the key to optical millimeter wave research

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