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Forward Brillouin Scattering Spectroscopy in Optical Fibers with Whispering-Gallery Modes

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Forward Brillouin Scattering Spectroscopy in Optical Fibers with Whispering-Gallery Modes

dc.contributor.author	Sánchez Domínguez, Luis Alberto
dc.contributor.author	Delgado-Pinar, Martina
dc.contributor.author	Díez Cremades, Antonio
dc.contributor.author	Andrés, Miguel V.
dc.date.accessioned	2023-10-19T06:26:48Z
dc.date.available	2023-10-19T06:26:48Z
dc.date.issued	2023
dc.identifier.citation	Sánchez Domínguez, Luis Alberto Delgado-Pinar, Martina Díez Cremades, Antonio Andrés, Miguel V. 2023 Forward Brillouin Scattering Spectroscopy in Optical Fibers with Whispering-Gallery Modes Advanced Optical Materials 2023 1 10
dc.identifier.uri	https://hdl.handle.net/10550/90485
dc.description.abstract	Opto-mechanical interactions in different photonic platforms as optical fibers and optical microresonators are raising great attention, and new exciting achievements have been reported in the last few years. Transverse acoustic mode resonances (TAMRs) in optical fibers -which can be excited optically via electrostriction and generate forward Brillouin scattering (FBS)- are being promoted as the physical mechanism for new fiber-sensing concepts. Here, the study reports a novel approach to detect and characterize opto-excited TAMRs of an optical fiber based on the interplay with optical surface wave resonances, i.e., optical whispering-gallery mode (WGM) resonances. TAMRs induce perturbations in the geometry and the dielectric permittivity of the fiber over the entire cross-section. It is shown that these perturbations couple the acoustic with the optical resonances and affect WGMs in a noticeable way. The study proposes and demonstrates the use of WGMs for probing opto-excited TAMRs in optical fibers. This probing technique provides the narrowest linewidths ever reported for the TAMRs and demonstrates an optimum efficiency for the detection of low-order TAMRs. The interplay between sensitivity, bandwidth, and Q factor of the WGM resonance is discussed.
dc.language.iso	eng
dc.relation.ispartof	Advanced Optical Materials, 2023, vol. 2023, p. 1-10
dc.subject	Materials
dc.subject	Òptica
dc.title	Forward Brillouin Scattering Spectroscopy in Optical Fibers with Whispering-Gallery Modes
dc.type	journal article
dc.date.updated	2023-10-19T06:26:48Z
dc.identifier.doi	10.1002/adom.202301629
dc.identifier.idgrec	161451
dc.rights.accessRights	open access