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Sensors (Basel). 2007 Nov 26;7(11):2970-2983. doi: 10.3390/s7112970.

Recent Advances in High-Birefringence Fiber Loop Mirror Sensors.

Author information

1
INESC Porto, Unidade de Optoelectrónica e Sistemas Electrónicos, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal. ofrazao@inescporto.pt.
2
INESC Porto, Unidade de Optoelectrónica e Sistemas Electrónicos, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal. jmb@uma.pt.
3
INESC Porto, Unidade de Optoelectrónica e Sistemas Electrónicos, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal. josantos@fc.up.pt.

Abstract

Recent advances in devices and applications of high-birefringence fiber loopmirror sensors are addressed. In optical sensing, these devices may be used as strain andtemperature sensors, in a separate or in a simultaneous measurement. Other describedapplications include: refractive index measurement, optical filters for interrogate gratingsstructures and chemical etching control. The paper analyses and compares different types ofhigh-birefringence fiber loop mirror sensors using conventional and microstructured opticalfibers. Some configurations are presented for simultaneous measurement of physicalparameters when combined with others optical devices, for example with a long periodgrating.

KEYWORDS:

fiber loop mirror; high-birefringence fiber.; optical fiber sensors

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