Versatile all-fiber slow-light assisted sensor
Authors
Bravo, M.; Angulo Vinuesa, Xabier; Martín López, Sonia; López-Amo, M.; González Herráez, MiguelIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/26757DOI: 10.1117/12.2013183
ISSN: 0277-786X
ISBN: 978-081949405-4
Publisher
Society of Photo-Optical Instrumentation Engineers (SPIE)
Date
2013-02-03Funders
European Commission
Ministerio de Economía y Competitividad
Comunidad de Madrid
Ministerio de Ciencia e Innovación
Bibliographic citation
Proc. SPIE 8636, Advances in Slow and Fast Light VI, 86360K (2013).
Keywords
Slow light
Ring resonators
Group delay
Group index
Kerr effect
Project
info:eu-repo/grantAgreement/EC/FP7/307441/EU/U-FINE
info:eu-repo/grantAgreement/MINECO//TEC2012-37958-C02-01/ES/TECNOLOGIAS DE SEGURIDAD CIVIL BASADAS EN FIBRA OPTICA/
info:eu-repo/grantAgreement/MICINN//TEC2010-20224-C02-01/ES/TECNOLOGIAS PARA SENSORES DE FIBRA OPTICA I/
info:eu-repo/grantAgreement/CAM//S2009%2FESP1781/ES//FACTOTEM2
Document type
info:eu-repo/semantics/conferenceObject
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
http://dx.doi.org/10.1117/12.2013183Access rights
info:eu-repo/semantics/openAccess
Abstract
We present theoretical and experimental results on a slow-light assisted all-fiber configuration that can be used for
efficient sensing of a variety of parameters (pressure, displacement...). In particular, we report here a structure that can be
transformed into a slow-light assisted displacement sensor capable of sub-micrometric resolution values with a
potentially simple intensiometric measurement scheme. The basic element in the structure is a lossy ring resonator tuned
close to the critical coupling regime. In this working regime, the resonator transfer function displays extremely high
group delay values close to the resonances, and, accordingly, a large sensitivity to additional losses. A mechanic
transducer transforms displacement into small additional losses in the ring. This leads to strong variations in the log
transmission of the resonances, which are shown to scale with the group index. This scheme shows orders of magnitude
sensitivity enhancements over a conventional bending-loss configuration. We believe that this structure can be further
developed to provide large sensitivity enhancements to conventional intensiometric fiber sensors.
Files in this item
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Versatile_ all_ SPIE_ 2013.pdf | 510.8Kb |
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