Optical-frequency-comb based interrogation of fiber resonators

被引:0
|
作者
Gagliardi, G. [1 ]
Avino, S. [1 ]
Fabian, M. [2 ]
Salza, M. [1 ]
Ferraro, P.
De Natale, P. [1 ]
机构
[1] CNR INO, Via Campi Flegrei 34, I-80078 Naples, Italy
[2] Univ Limerick, Fiber Opt Mat Res Program, Dept Elect & Comp Engn, Limerick, Ireland
关键词
strain sensors; fiber Bragg grating; laser frequency locking; optical fiber resonator; optical frequency comb; evanescent wave spectroscopy; cavity ring-down;
D O I
10.1117/12.885911
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Strain sensing at the 10(-13) level, from the mHz to the kHz frequency range, is performed using a fiber Bragg-grating resonator interrogated by an optical-frequency-comb stabilized laser. The optical-comb synthesizer is a fs-pulsed fiber laser phase-locked to a quartz oscillator, which provides for a very high laser-frequency stability. The comb teeth span over the 1510-1580 nm spectral interval. Therefore, the OFS is also used as a coherent radiation source for fiber-loop cavity ring-down evanescent-wave spectroscopy of analytes diluted in liquid samples.
引用
收藏
页数:4
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