Fast and wide tuning range wavelength-swept fiber laser based on dispersion tuning and its application to dynamic FBG sensing

被引：102
|
作者：
Nakazaki, Yuichi [1 ]
Yamashita, Shinji [1 ]
机构：
[1] Univ Tokyo, Dept Elect Engn, Bunkyo Ku, Tokyo 1138656, Japan
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 10期
关键词：
OPTICAL COHERENCE TOMOGRAPHY; GRATING SENSOR SYSTEM; RING LASER;
D O I：
10.1364/OE.17.008310
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a wavelength-swept fiber laser with high speed and wide tuning range, and its application to fiber sensors. The laser is based on the dispersion tuning technique, which does not require any optical tunable filter in the laser cavity. By directly modulating the semiconductor amplifier and adjusting the dispersion in the cavity, a wide wavelength tuning range of 178.7 nm and a fast tuning rate of over 200 kHz are obtained. The wavelength-swept laser source is applied to a dynamic fiber Bragg grating sensing system. Dynamic measurement of a 150 Hz sinusoidal strain is demonstrated with a measuring speed as fast as 40 kHz. (C) 2009 Optical Society of America
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页码：8310 / 8318
页数：9
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