Micro-structured fiber interferometer as sensitive temperature sensor

F. C. Favero; M. Becker; R. Spittel; M. Rothhardt; J. Kobelke; H. Bartelt

doi:10.1007/s13320-013-0116-5

Photonic Sensors ›› 2012, Vol. 3 ›› Issue (3) : 208 -213. DOI: 10.1007/s13320-013-0116-5

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Micro-structured fiber interferometer as sensitive temperature sensor

F. C. Favero ¹¹¹⁶^,^a
, M. Becker ¹¹¹⁶
, R. Spittel ¹¹¹⁶
, M. Rothhardt ¹¹¹⁶
, J. Kobelke ¹¹¹⁶
, H. Bartelt ¹¹¹⁶

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Abstract

We report on a fast and sensitive temperature sensor using a micro-structured or photonic crystal fiber interferometer with a high germanium doped fiber core. The wavelength sensitivity for temperature variation was as high as Δλ/ΔT= 78 pm/°C up to 500 °C, which was 6 times more sensitive than the fiber Bragg grating temperature sensitivity of Δλ/ΔT= 13 pm/°C at 1550 nm. The sensor device was investigated concerning the sensitivity characteristics and response time.

Keywords

Micro-structured optical fiber / fiber interferometer / fiber temperature sensor

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F. C. Favero, M. Becker, R. Spittel, M. Rothhardt, J. Kobelke, H. Bartelt. Micro-structured fiber interferometer as sensitive temperature sensor. Photonic Sensors, 2012, 3(3): 208-213 DOI:10.1007/s13320-013-0116-5

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