Mode-splitting cloning in birefringent fiber Bragg grating ring resonators

Year: 2016

Authors: Campanella C. E., Malara P., Campanella C. M., Giove F., Dunai M., Passaro V. M. N., Gagliardi G.

Autors Affiliation: OpSys SRLS, Via Matteotti 23, I-70023 Bari, Italy;
Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), via Campi Flegrei, 34—Comprensorio A. Olivetti, 80078 Pozzuoli, Italy;
Photonics Research Group, Dipartimento di Ingegneria Elettrica e dell’Informazione, Politecnico di Bari, Via E. Orabona n. 4, 70125 Bari, Italy

Abstract: In this Letter, we report the theoretical model and the experimental evidence of a mode-splitting cloning effect due to the resonant coupling between modes having different polarizations in weakly birefringent fiber Bragg grating (FBG) ring resonators. This modal coupling depends on the fiber birefringence and the FBG reflectivity. In the ideal case of the absence of birefringence, a single split-mode resonant structure can be observed in the resonator transmission spectrum due to the degeneracy removal of the two counter-propagating modes. In the presence of FBG birefringence, a secondary split doublet resulting in a clone of the initial one is generated. The described effect can be exploited for spectroscopic-sensing applications based on more complex split-mode dynamics. (C) 2016 Optical Society of America

Journal/Review: OPTICS LETTERS

Volume: 41 (12)      Pages from: 2672  to: 2675

KeyWords: Birefringence; Cloning; Optical resonators, Birefringent fiber bragg gratings; Experimental evidence; Fiber birefringence; Resonant couplings; Resonant structures; Spectroscopic sensing; Theoretical modeling; Transmission spectrums; Fiber Bragg gratings
DOI: 10.1364/OL.41.002672

Citations: 16
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