Scientific Results

Investigating the resonance spectrum of optical frequency combs in fiber-optic cavities

Year: 2013

Authors: Avino S., Giorgini A., Malara P., Gagliardi G., De Natale P.

Autors Affiliation: Consiglio Nazionale delle Ricerche – Istituto Nazionale di Ottica (INO), Comprensorio “A. Olivetti”, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy

Abstract: We report a detailed theoretical and experimental study of fiber-optic cavities under broadband excitation by mode-locked laser combs. We calculate the effects of fiber dispersion on the cavity transmission. For any integer ratio between the comb repetition rate and cavity free spectral range, the theoretical resonant output spectrum exhibits a narrow group of resonant teeth, surrounded by minor, unevenly spaced resonances. Also, the central resonance can be rapidly and precisely tuned over the entire comb span by only acting on its repetition rate. Experimental observations are provided by a single-mode fiber ring and a telecom-wavelength comb laser. The resulting spectral pattern agrees very well with our theoretical prediction, allowing a thorough characterization of the cavity dispersion and opening new perspectives for comb spectroscopy in dielectric resonators. (C) 2013 Optical Society of America

Journal/Review: OPTICS EXPRESS

Volume: 21 (11)      Pages from: 13785  to: 13793

More Information: The authors acknowledge partial support from Italian Ministry for Education, University and Research (MIUR) in the framework of FIRB RBFR10Q0PT_001 \”DROPS\” and PON PON01_01209 \”BACKOP\” projects.
KeyWords: Dielectric devices; Single mode fibers, Broadband excitation; Experimental observation; Free spectral range; Mode-locked laser; Optical frequency combs; Resonance spectrum; Spectral patterns; Theoretical and experimental, Dispersion (waves)
DOI: 10.1364/OE.21.013785

Citations: 1
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