Modal-interference-based temperature sensing using plastic optical fibers: markedly enhanced sensitivity near glass-transition temperature

Goki Numata; Neisei Hayashi; Marie Tabaru; Yosuke Mizuno; Kentaro Nakamura

doi:10.1117/12.2184389

1 July 2015 Modal-interference-based temperature sensing using plastic optical fibers: markedly enhanced sensitivity near glass-transition temperature

Goki Numata, Neisei Hayashi, Marie Tabaru, Yosuke Mizuno, Kentaro Nakamura

Author Affiliations +

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 96552I (2015) https://doi.org/10.1117/12.2184389
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

We developed strain and temperature sensors based on multimode interference in perfluorinated graded-index (GI) plastic optical fibers, and investigate their sensing performance at 1300 nm. At room temperature, we achieve ultra-high sensitivities of strain and temperature of –112 pm/με and +49.8 nm/°C/m, the absolute value of which are approximately 7.2 and over 1800 times as large as those in silica GI multimode fibers, respectively. We also find that the temperature sensitivity is drastically enhanced with increasing temperature toward ~80 °C, where phase transition of core polymer partially occurs.

Citation Download Citation

Goki Numata, Neisei Hayashi, Marie Tabaru, Yosuke Mizuno, and Kentaro Nakamura "Modal-interference-based temperature sensing using plastic optical fibers: markedly enhanced sensitivity near glass-transition temperature", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96552I (1 July 2015); https://doi.org/10.1117/12.2184389

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