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Microwave signal generation method and system based on microcavity feedback locking laser

A microwave signal and generation method technology, applied in the field of microwave photonics, can solve the problems of difficult optical path and circuit control, complex circuit, difficult on-chip integration, etc., and achieve the effect of simple and easy implementation, high system integration, and cost reduction

Pending Publication Date: 2022-05-06
THE HONG KONG POLYTECHNIC UNIV SHENZHEN RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a microwave signal generation method and system based on a microcavity feedback-locked laser in view of the above-mentioned defects of the prior art, aiming at solving complex circuits based on photoelectric oscillation technology, difficult optical path and circuit control, High cost and difficult on-chip integration

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  • Microwave signal generation method and system based on microcavity feedback locking laser
  • Microwave signal generation method and system based on microcavity feedback locking laser
  • Microwave signal generation method and system based on microcavity feedback locking laser

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Embodiment 1

[0075] Based on the backscattered light of the microcavity or the reflected light of the end surface, and the optical injection-locked single-frequency laser matching the two resonant peaks of the microcavity, the method of generating microwave signals is mainly composed of a single-frequency laser, a coupler, and a microcavity, such as image 3 shown. In addition, the method of generating microwave signals based on the microcavity backscattered light or end-face reflected light and the optical injection-locked laser matching the two resonant peaks of the microcavity can also be composed of a single-chip integrated dual-wavelength laser and a resonant cavity, that is, a single-chip The output end of the integrated dual-wavelength laser is directly connected to the input end of the microcavity. In this embodiment, all devices may be on-chip integrated devices.

[0076] The light output by the two single-frequency lasers is combined by a coupler, and the combined light enters the...

Embodiment 2

[0078] The light output by the laser passes through the microcavity and is matched with the two resonant peaks of the microcavity. The optical feedback injection locking method to generate microwave signals is mainly composed of a single-frequency laser, a coupler, a circulator, and a microcavity, such as Figure 4 shown. In addition, the light output by the laser passes through the microcavity, and the light whose operating frequency matches the two resonant peaks of the microcavity will be feedback injection locked to generate microwave signals. The method can also be composed of a single-chip integrated dual-wavelength laser, circulator, and resonant cavity. That is, the output end of the single-chip integrated dual-wavelength laser is directly connected to the 2-port of the circulator. In this embodiment, all devices may be on-chip integrated devices.

[0079] After the two single-frequency lasers are combined by the coupler, the light is input from port 2 of the circulat...

Embodiment 3

[0081] Based on the backscattered light of the microcavity or the reflected light of the end surface, and the optical injection-locked laser matching the two resonant modes (TE mode and TM mode) of the microcavity, the method of generating microwave signals mainly consists of a single-frequency laser, a coupler, and a polarization controller. , microcavity structure, such as Figure 5 shown. In addition, the method of generating microwave signals based on the microcavity backscattered light or end-face reflected light and the optical injection-locked laser that matches the two resonant modes (TE mode and TM mode) of the microcavity can also be composed of a monolithic integrated dual-wavelength laser, A polarization controller and a resonant cavity are formed, that is, the output end of the monolithic integrated dual-wavelength laser is directly connected to the polarization controller. In this embodiment, all devices may be on-chip integrated devices.

[0082] After the two...

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Abstract

The invention discloses a microwave signal generation method and system based on a microcavity feedback locking laser, and the system comprises at least one laser which is used for outputting an optical signal, carrying out the locking and line width narrowing of the optical signal fed back to the laser, and obtaining a plurality of line width narrowed optical signals; the microcavity resonator is used for receiving an optical signal output by the laser, feeding back the optical signal matched with the resonant frequency of the laser to the laser, finally receiving a plurality of optical signals with narrowed line width output by the laser, and performing optical signal beat frequency at the output end of the microcavity resonator to obtain a high-frequency microwave signal; and the microcavity resonator is in optical communication connection with the laser. Microwave signals are generated in an all-optical mode, a large amount of cost is reduced, the scheme is simple and easy to implement, devices can be integrated on a chip, and the system integration degree is high.

Description

technical field [0001] The invention relates to the technical field of microwave photonics, in particular to a microwave signal generation method and system based on a microcavity feedback-locked laser. Background technique [0002] The frequency generated by traditional electronic technology is usually within GHz, and the frequency stability and noise characteristics in the higher frequency band deteriorate sharply, which cannot meet the development needs of modern electronic systems. The idea of ​​photoelectric oscillators to generate microwave signals can generate high-frequency microwave signals, which have the advantages of high stability, low noise, and tunability. However, optoelectronic oscillation technology (OEO) such as multi-loop resonator, injection-locked and phase-locked and ring resonator cavity realizes OEO. Its system structure is complicated and it is difficult to realize integration. It has very high requirements for optical path and circuit system, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/081H01S3/10H01S3/13H04B10/50
CPCH01S3/0813H01S3/10H01S3/1305H04B10/503
Inventor 黄冬梅王超李锋
Owner THE HONG KONG POLYTECHNIC UNIV SHENZHEN RES INST