A Coherent Sweeping Light Source Enhanced by Fourier Domain Injection Locking

A technology of injection locking and frequency swept light source, applied in the field of frequency swept light source, it can solve the problem of phase continuity of linear frequency swept light source, etc., and achieve the effect of ensuring phase continuity characteristics

Active Publication Date: 2021-12-28
SUN YAT SEN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The present invention provides a coherent frequency-sweeping light source with enhanced injection locking in the Fourier domain to overcome the defect that the linear frequency-sweeping light source in the prior art cannot have phase continuity.

Method used

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  • A Coherent Sweeping Light Source Enhanced by Fourier Domain Injection Locking
  • A Coherent Sweeping Light Source Enhanced by Fourier Domain Injection Locking
  • A Coherent Sweeping Light Source Enhanced by Fourier Domain Injection Locking

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Embodiment 1

[0021] Such as figure 1 As shown, a Fourier-domain injection-locked enhanced coherent frequency-swept light source includes: a continuous laser 1, a first optical switch 2, an optical coupler 3, a frequency-shifting ring 4, an optical circulator 5, and an injection-locked unit 6, Optical output terminal 7; the continuous laser 1 is used as an initial input source, and its output terminal is connected to the second input terminal of the optical coupler 3 through the first optical switch 2; one end of the frequency shifting ring 4 is connected to the optical coupler 3 The first input end of the optical coupler, the other end is connected to the first output end of the optical coupler 3, the second output end of the optical coupler 3 is connected to the first port of the optical circulator 5, the first port of the optical circulator 5 The second port is connected to the injection locking unit 6, and the third port of the optical circulator 5 is connected to the optical output por...

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Abstract

The invention discloses a coherent frequency sweep light source enhanced by Fourier domain injection locking, comprising: a continuous laser (1), a first optical switch (2), an optical coupler (3), a frequency shifting ring (4), an optical ring Shaper (5), injection locking unit (6), optical output terminal (7); the continuous laser (1) is used as an initial input source, and its output terminal is connected to an optical coupler (3) through a first optical switch (2) ); one end of the frequency shift loop (4) is connected to the first input end of the optocoupler (3), and the other end is connected to the first output end of the optocoupler (3). The second output end of the coupler (3) is connected to the first port of the optical circulator (5), the second port of the optical circulator (5) is connected to the injection locking unit (6), the optical circulator (5) ) is connected to the optical output (7). The invention realizes the linear frequency sweep and ensures the phase continuity of the frequency sweep light source.

Description

technical field [0001] The present invention relates to the field of frequency-sweeping light sources, and more particularly, to a coherent frequency-sweeping light source with Fourier domain injection locking enhancement. Background technique [0002] The optical frequency output by the linear sweep light source changes with time, and it can realize the sweep output of optical wavelengths in a certain spectral range. It has a wide range of application requirements in the fields of optical communication, optical sensing, and optical detection. tomography, OCT), synthetic aperture radar (Synthetic Aperture Radar, SAR), optical sensing and other key technologies in various systems. It is usually required that the linear frequency sweep light source meet the requirements of fast speed, wide tuning range, narrow instantaneous line width, large output power and linear frequency sweep. There are many ways to realize linear sweeping light source, usually designed for some specific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/00
CPCH01S3/005
Inventor 易兴文潘竞顺李朝晖李凡王大伟
Owner SUN YAT SEN UNIV
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