Abstract
Abstract
A strain-insensitive high-sensitivity temperature sensor based on multimode interference in a specialty fiber with a square core is developed and experimentally investigated. A 25 cm long square-core fiber is used as a multimode fiber (MMF) of a single-mode–multimode–single-mode structure and the temperature dependence of its transmitted spectrum is measured while the strain is applied continually from 0 to 500 με with steps of 100 με. The mean temperature sensitivity is −22.35 pm °C−1, which is ∼3.5 times higher than that of a standard MMF, and it is almost independent of strain with a small standard deviation of 0.44 pm °C−1.
Funder
Japan Society for the Promotion of Science KAKENHI
Yazaki Memorial Foundation for Science and Technology
Murata Science Foundation
Telecommunications Advancement Foundation
Takahashi Industrial and Economic Research Foundation
Konica Minolta Science and Technology Foundation
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
5 articles.
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