Heterodyne detection applied to a fiber Bragg grating-based sensor using a directly modulated distributed feedback laser

被引：11
|
作者：
Kuroda, Keiji [1 ]
机构：
[1] Kitasato Univ, Sch Sci, Dept Phys, Sagamihara, Kanagawa 2520373, Japan
来源：
OPTICS LETTERS | 2021年 / 46卷 / 16期
关键词：
TIME-DIVISION; SYSTEM; RAMAN; REMOTE; AMPLIFIER; NETWORK;
D O I：
10.1364/OL.432915
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The heterodyne detection technique is applied to a fiber Bragg grating (FBG)-based sensor. Specifically, a directly modulated distributed feedback laser array is used as a frequency scanning light source. Weak reflections from the FBG are recorded as a beat signal with a high signal-to-noise ratio using heterodyne detection. A reflection signal is clearly observed from the FBG with a reflectivity of 1% located at 60 km from the detection port. (C) 2021 Optical Society of America
引用
收藏
页码：3985 / 3988
页数：4
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