Broadband optical frequency comb generating system based on phase lock control

Abstract

Provided is a broadband optical frequency comb generating system based on phase lock control. The broadband optical frequency comb generating system comprises a narrow linewidth laser, optical splitters, a FP cavity electro-optic phase modulator, a first photoelectric detector, a second photoelectric detector, a bias Tree, a referential microwave signal and a point phase lock controlling module. A connection in the sequence of the optical splitter, the FP cavity electro-optic phase modulator, the optical splitter, the first photoelectric detector, the second photoelectric detector, the bias Tree, the referential microwave signal and the point phase lock controlling module is established. An input end of a phase lock controlling device is connected with an output end of the referential microwave signal, and an output end of the phase lock controlling device is connected with an input port a of the bias Tree. According to the broadband optical frequency comb scheme generated on the basis of an electric phase lock control method, the difficulties in the aspects such as the bandwidth, the weight, the volume and the electromagnetic compatibility in the traditional method are solved.

Description

technical field [0001] The invention belongs to the field of microwave photonics, in particular to a broadband optical frequency comb generation system based on phase-locked control. Background technique [0002] In order to realize the connection between microwave frequency and optical frequency, people have proposed a frequency chain scheme very early. The main idea is to convert optical frequency to microwave frequency through nonlinear frequency conversion and other means. Due to the complex technical process and low nonlinear efficiency of this scheme, scientists did not build such a device until the end of the 20th century after more than ten years of hard work. However, the huge volume structure of the frequency chain and the accumulated errors caused by multiple conversions determine the complexity and uncertainty of measuring optical frequency with it. In 2005, the Nobel Prize winner proposed the concept of optical frequency comb, which is also a new concept for ma...

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Problems solved by technology

However, these methods are unstable and require high-frequency microwave sources

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