RT info:eu-repo/semantics/conferenceObject
T1 Versatile all-fiber slow-light assisted sensor
A1 Bravo, M.
A1 Angulo Vinuesa, Xabier
A1 Martín López, Sonia
A1 López-Amo, M.
A1 González Herráez, Miguel
K1 Slow light
K1 Ring resonators
K1 Group delay
K1 Group index
K1 Kerr effect
K1 Ciencias tecnológicas
K1 Electrónica
K1 Technology
K1 Electronics
AB We present theoretical and experimental results on a slow-light assisted all-fiber configuration that can be used forefficient sensing of a variety of parameters (pressure, displacement...). In particular, we report here a structure that can betransformed into a slow-light assisted displacement sensor capable of sub-micrometric resolution values with apotentially simple intensiometric measurement scheme. The basic element in the structure is a lossy ring resonator tunedclose to the critical coupling regime. In this working regime, the resonator transfer function displays extremely highgroup delay values close to the resonances, and, accordingly, a large sensitivity to additional losses. A mechanictransducer transforms displacement into small additional losses in the ring. This leads to strong variations in the logtransmission of the resonances, which are shown to scale with the group index. This scheme shows orders of magnitudesensitivity enhancements over a conventional bending-loss configuration. We believe that this structure can be furtherdeveloped to provide large sensitivity enhancements to conventional intensiometric fiber sensors.
PB Society of Photo-Optical Instrumentation Engineers (SPIE)
SN 978-081949405-4
SN 0277-786X
YR 2013
FD 2013-02-03
LK http://hdl.handle.net/10017/26757
UL http://hdl.handle.net/10017/26757
LA eng
NO European Commission
DS MINDS@UW
RD 01-may-2024