Fiber strain sensor based on a π-phase-shifted Bragg grating and the Pound-Drever-Hall technique

被引：138
|
作者：
Gatti, D. [1 ,2 ]
Galzerano, G. [1 ,2 ]
Janner, D. [3 ]
Longhi, S. [1 ,2 ]
Laporta, P. [1 ,2 ]
机构：
[1] Politecn Milan, CNR, Ist Foton & Nanotecnol, I-20133 Milan, Italy
[2] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy
[3] ICFO, Barcelona 08860, Spain
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 03期
关键词：
D O I：
10.1364/OE.16.001945
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fiber strain sensor based on a pi-phase-shifted Bragg grating and an extended cavity diode laser is proposed. Locking the laser frequency to grating resonance by the Pound-Drever-Hall technique results in a strain power spectral density S-epsilon(f) = (3 x 10(-19) f(-1) + 2.6 x 10(-23)) epsilon(2)/Hz in the Fourier frequency range from 1 kHz to 10 MHz (epsilon being the applied strain), corresponding to a minimum sensitivity of 5 p epsilon Hz(-1/2) for frequencies larger than 100 kHz. (C) 2008 Optical Society of America.
引用
收藏
页码：1945 / 1950
页数：6
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