Miniaturized fiber taper reflective interferometer for high temperature measurement

We present an ultra-small all-silica high temperature sensor based on a reflective Fabry-Perot modal interferometer (FPMI). Our FPMI is made of a micro-cavity (approximately 4.4 microm) directly fabricated into a fiber taper probe less than 10 mum in diameter. Its sensing head is a miniaturized sing...

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Veröffentlicht in:	Optics express 2010-06, Vol.18 (13), p.14245-14250
Hauptverfasser:	Kou, Jun-long, Feng, Jing, Ye, Liang, Xu, Fei, Lu, Yan-qing
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum Fiber Optic Technology - instrumentation Hot Temperature Interferometry - instrumentation Miniaturization - instrumentation Models, Theoretical Optical Fibers Silicon Dioxide
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creator	Kou, Jun-long Feng, Jing Ye, Liang Xu, Fei Lu, Yan-qing
description	We present an ultra-small all-silica high temperature sensor based on a reflective Fabry-Perot modal interferometer (FPMI). Our FPMI is made of a micro-cavity (approximately 4.4 microm) directly fabricated into a fiber taper probe less than 10 mum in diameter. Its sensing head is a miniaturized single mode-multimode fiber configuration without splicing. The sensing mechanism of FPMI is the interference among reflected fundamental mode and excited high-order modes at the end-faces. Its temperature sensitivity is approximately 20 pm/degrees C near the wavelength of 1550 nm. This kind of sensor can work in harsh environments with ultra-large temperature gradient, but takes up little space because of its unique geometry and small size.
doi_str_mv	10.1364/oe.18.014245
format	Article
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source	MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection
subjects	Aluminum Fiber Optic Technology - instrumentation Hot Temperature Interferometry - instrumentation Miniaturization - instrumentation Models, Theoretical Optical Fibers Silicon Dioxide
title	Miniaturized fiber taper reflective interferometer for high temperature measurement
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