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

  Articoli su Riviste JCR/ISI  (anno 2009)

Autori:  Gagliardi G., Salza M., Ferraro P., De Natale P

Affiliazione Autori:  CNR, Istituto Nazionale di Ottica Applicata (INOA), Compl. A. Olivetti, via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy

Riassunto:  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. © 2009 SPIE.

Rivista/Giornale:  PROCEEDINGS OF SPIE
Volume n.:  7503      Pagine da: 75033N  a: 75033N
Ulteriori informazioni:  ISSN: 0277786X ISBN: 978-081947814-6 DOI: 10.1117/12.835199


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