Demonstration of a passive subpicostrain fiber strain sensor

Jong H. Chow; David E. McClelland; Malcolm B. Gray; Ian C.M. Littler

doi:10.1364/OL.30.001923

Demonstration of a passive subpicostrain fiber strain sensor

Jong H. Chow, David E. McClelland, Malcolm B. Gray, Ian C.M. Littler

Research output: Contribution to journal › Article › peer-review

121 Citations (Scopus)

Abstract

We demonstrate a fiber Fabry–Perot (FFP) sensor that is capable of detecting subpicostrain signals, from 100 Hz and extending beyond 100 kHz, using the Pound–Drever–Hall (PDH) frequency locking technique. A low-power diode laser at 1550 nm is locked to a free-space reference cavity to suppress its free-running frequency noise, thereby stabilizing the laser. The stabilized laser is then used to interrogate a FFP sensor whose PDH error signal yields the instantaneous fiber strain.

Original language	English
Pages (from-to)	1923-1925
Number of pages	3
Journal	Optics Letters
Volume	30
Issue number	15
DOIs	https://doi.org/10.1364/OL.30.001923
Publication status	Published - 1 Aug 2005

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AB - We demonstrate a fiber Fabry–Perot (FFP) sensor that is capable of detecting subpicostrain signals, from 100 Hz and extending beyond 100 kHz, using the Pound–Drever–Hall (PDH) frequency locking technique. A low-power diode laser at 1550 nm is locked to a free-space reference cavity to suppress its free-running frequency noise, thereby stabilizing the laser. The stabilized laser is then used to interrogate a FFP sensor whose PDH error signal yields the instantaneous fiber strain.

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Demonstration of a passive subpicostrain fiber strain sensor

Abstract

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