Strain sensing at the 10(-13) level, from the mHz to the kHz frequency range, is performed using a fiber Bragg-grating resonator interrogated by an optical-frequency-comb stabilized laser. The optical-comb synthesizer is a fs-pulsed fiber laser phase-locked to a quartz oscillator, which provides for a very high laser-frequency stability. The comb teeth span over the 1510-1580 nm spectral interval. Therefore, the OFS is also used as a coherent radiation source for fiber-loop cavity ring-down evanescent-wave spectroscopy of analytes diluted in liquid samples.
Optical-frequency-comb based interrogation of fiber resonators
Gagliardi G;Avino S;Salza M;Ferraro P;De Natale P
2011
Abstract
Strain sensing at the 10(-13) level, from the mHz to the kHz frequency range, is performed using a fiber Bragg-grating resonator interrogated by an optical-frequency-comb stabilized laser. The optical-comb synthesizer is a fs-pulsed fiber laser phase-locked to a quartz oscillator, which provides for a very high laser-frequency stability. The comb teeth span over the 1510-1580 nm spectral interval. Therefore, the OFS is also used as a coherent radiation source for fiber-loop cavity ring-down evanescent-wave spectroscopy of analytes diluted in liquid samples.File in questo prodotto:
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