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Proceedings Paper

Optical-frequency-comb stabilised lasers for interrogation of fibre-resonator strain sensors
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Paper Abstract

Quasi-static and dynamic strain sensing is performed by means of a fibre Bragg-grating resonator based on an optical-frequency-comb stabilised laser. The comb synthesizer, centred around 1560 nm, is a fs-pulsed fibre laser, which is phase-locked to an ultra-stable quartz oscillator, serving as an optical reference to minimise laser-frequency and phase noise both in the long and short-term operation. Detection limits in the order of a few pεRMS/√Hz, in the Hz and sub-Hz range, are demonstrated, while a sub- pε sensitivity is expected at higher frequencies in the acoustic range.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033N (5 October 2009); doi: 10.1117/12.835199
Show Author Affiliations
Gianluca Gagliardi, Istituto Nazionale di Ottica Applicata, CNR (Italy)
Mario Salza, Istituto Nazionale di Ottica Applicata, CNR (Italy)
Pietro Ferraro, Istituto Nazionale di Ottica Applicata, CNR (Italy)
Paolo De Natale, Istituto Nazionale di Ottica Applicata, CNR (Italy)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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