Journal
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
Volume 23, Issue 2, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2016.2627181
Keywords
Fiber loop mirror; optical fiber sensor; point temperature sensor; ultrahigh sensitivity
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Funding
- Energy Market Authority of Singapore [NRF2013EWT-EIRP001-006]
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An ultrahigh sensitivity point temperature sensor is presented by inserting a section of low birefringence photonic crystal fiber (LB-PCF) inside the fiber loop mirror structure. The sensor head is configured by applying a mechanical lateral force on the LB-PCF, whose birefringence is sensitive to environmental temperature change due to stress optic effect. The sensor has the merits of simple and robust structure. Experiment shows only the small sensor head is sensitive to temperature change while the guiding PCF is insensitive to environmental temperature, so it can be used as a point temperature sensor. The proposed sensor has a linear response to the temperature change with an ultrahigh temperature sensitivity of 30.33 nm/degrees C.
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