Interrogation of fiber Bragg-grating resonators by polarization-spectroscopy laser-frequency locking

Anno: 2007

Autori: Gagliardi G., De Nicola S., Ferraro P., De Natale P.

Affiliazione autori: CNR – Istituto Nazionale di Ottica Applicata and European Laboratory for Non-Linear Spectroscopy (LENS), Comprensorio “A. Olivetti”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
CNR – Istituto di Cibernetica “E. Caianiello”, Comprensorio “A. Olivetti”, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Abstract: We report on an optically-based technique that provides an efficient way to track static and dynamic strain by locking the frequency of a diode laser to a fiber Bragg-grating Fabry-Perot cavity. For this purpose, a suitable optical frequency discriminator is generated exploiting the fiber natural birefringence and that resulting from the gratings inscription process. In our scheme, a polarization analyzer detects dispersive-shaped signals centered on the cavity resonances without need for additional optical elements in the resonator or any laser-modulation technique. This method prevents degradation of the resonator quality and maintains the configuration relatively simple, demonstrating static and dynamic mechanical sensing below the picostrain level.

Giornale/Rivista: OPTICS EXPRESS

Volume: 15 (7)      Da Pagina: 3715  A: 3728

Parole chiavi: Birefringence; Cavity resonators; Fiber Bragg gratings; Light modulation; Light polarization; Semiconductor lasers, Laser frequency locking; Mechanical sensing; Optical frequency discriminators; Polarization analyzers, Optical resonators
DOI: 10.1364/OE.15.003715

Citazioni: 22
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-09-15
Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
Link per visualizzare la scheda su IsiWeb: Clicca qui
Link per visualizzare la citazioni su IsiWeb: Clicca qui