High-precision narrow laser linewidth measurement based on coherent envelope demodulation

被引：15
|
作者：
He, Yixiong [1 ]
Hu, Shuling [1 ]
Liang, Shuang [1 ]
Li, Yiyue [1 ]
机构：
[1] Beihang Univ, Sch Instrumentat & Optoelect Engn, Beijing 100191, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2019年 / 50卷
关键词：
Linewidth measurement; Self-heterodyne interferometry; Demodulation; NOISE;
D O I：
10.1016/j.yofte.2019.03.024
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a novel method for high-precision narrow laser linewidth measurement through demodulating the coherent envelope of the short delayed self-heterodyne interferometry spectrum. Our method based on short delayed self-heterodyne interferometry can ignore the influence of Gaussian broadening induced by 1/f frequency noise and eventually obtain the strict Lorentzian spectrum and the corresponding linewidth. The feasibility of the method has been verified via theoretical analysis, simulation, and experimentation. Compared to the conventional linewidth measurement method, the linewidth measured by our method is more accurate, especially in the field of narrow linewidth measurement.
引用
收藏
页码：200 / 205
页数：6
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