Research on frequency modulation character of the current driven DFB semiconductor laser

被引：7
|
作者：
Zhang, Jian [1 ,2 ]
Gao, Cunxiao [1 ]
Xue, Mingyuan [1 ,2 ]
Liu, Ruisheng [3 ]
机构：
[1] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100084, Peoples R China
[3] Shaanxi Normal Univ, Xian 710119, Shaanxi, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2019年 / 33卷 / 01期
基金：
中国国家自然科学基金;
关键词：
LFMCW; laser ranging; DFB laser;
D O I：
10.1142/S0217984918504225
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This paper presents a study on the issue of current-driven distributed feedback (DFB) semiconductor lasers (LD) experiencing nonlinear laser frequency variation in the course of linear frequency modulation. A theoretical model of the linear frequency modulation process of DFB semiconductor lasers is established. On this basis, the relationship between injection current and laser frequency is analyzed and a correction method has been put forward, to improve the linearity of the laser frequency variation. It was eventually verified that the proposed correction method can greatly improve the linearity of the linear frequency modulation (LFM) output laser signal.
引用
收藏
页数：12
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