Optical-frequency-comb based interrogation of fiber resonators
| Autor: | M. Salza, M. Fabian, Pietro Ferraro, Saverio Avino, P. De Natale, G. Gagliardi |
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| Rok vydání: | 2011 |
| Předmět: |
laser frequency locking
Optical fiber Materials science optical fiber resonator business.industry Physics::Optics Polarization-maintaining optical fiber Laser fiber Bragg grating optical frequency comb law.invention Resonator Optics Fiber Bragg grating law Fiber optic sensor Fiber laser Dispersion-shifted fiber Physics::Atomic Physics strain sensors business |
| Zdroj: | 21st International Conference on Optical Fiber Sensors, pp. 77531I–77531I, Ottawa, CANADA, MAY 15-19, 2011 info:cnr-pdr/source/autori:Gagliardi G. [ 1 ] ; Avino S. [ 1 ] ; Fabian M. [ 2 ] ; Salza M. [ 1 ] ; Ferraro P. [ 1 ] ; De Natale P. [ 1 ]/congresso_nome:21st International Conference on Optical Fiber Sensors/congresso_luogo:Ottawa, CANADA/congresso_data:MAY 15-19, 2011/anno:2011/pagina_da:77531I/pagina_a:77531I/intervallo_pagine:77531I–77531I |
| ISSN: | 0277-786X |
| Popis: | 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. Keywords: strain sensors, fiber Bragg grating, laser frequency locking, optical fiber resonator, optical frequency comb, evanescent wave spectrosc opy, cavity ring-down. 1. INTRODUCTION In the last decade, the invention of optical frequency-comb synthesizers (OFCS) has allowed unprecedented accuracy and precision in spectroscopy experiments as well as measurements of fundamental physical constants 1,2 . Originally devised for metrological applications, OFCSs have recently been proposed as infrared light sources for broadband, high-sensitivity molecular spectroscopy |
| Databáze: | OpenAIRE |
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