Open AccessHigh-temperature sensor based on suspended-core microstructured optical fiber
Author(s) -
Huaiyin Su,
Yundong Zhang,
Kai Ma,
Yijun Zhao,
Jinfang Wang
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.020156
Subject(s) - fusion splicing , materials science , multi mode optical fiber , optics , cladding (metalworking) , optical fiber , fabrication , fiber optic sensor , plastic clad silica fiber , interferometry , temperature measurement , photonic crystal fiber , core (optical fiber) , hard clad silica optical fiber , optoelectronics , wavelength , plastic optical fiber , physics , medicine , alternative medicine , pathology , quantum mechanics , metallurgy
We propose a high-temperature sensor based on a suspended-core microstructured optical fiber (SCMF). The sensor is constructed by fusion splicing a piece of SCMF between two sections of multimode fibers (MMFs) which act as light beam couplers. The multimode interference is formed by the air cladding modes and the silica core modes in the SCMF. Fast Fourier transform is adapted to filtering the raw transmission spectra of the MMF-SCMF-MMF structure. The wavelength shift of the dominant spatial frequency is monitored as the temperature varies from 50 °C to 800 °C. The sensitivities of 31.6 pm/°C and 51.6 pm/°C in the temperature range of 50 °C-450 °C and 450 °C-800 °C are respectively achieved. Taking advantage of the compact size, good stability and repeatability, easy fabrication, and low cost, this proposed high-temperature sensor has an applicable value.