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Optics Letters

Optics Letters


  • Vol. 30, Iss. 15 — Aug. 1, 2005
  • pp: 1923–1925

Demonstration of a passive subpicostrain fiber strain sensor

Jong H. Chow, David E. McClelland, Malcolm B. Gray, and Ian C. M. Littler  »View Author Affiliations

Optics Letters, Vol. 30, Issue 15, pp. 1923-1925 (2005)

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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.

© 2005 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry

Jong H. Chow, David E. McClelland, Malcolm B. Gray, and Ian C. M. Littler, "Demonstration of a passive subpicostrain fiber strain sensor," Opt. Lett. 30, 1923-1925 (2005)

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