Open AccessAll-solid photonic band gap fiber based distributed fiber optic pressure sensor
Author(s) -
Wenhui Ding,
Yi Jiang
Publication year - 2012
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.20.014054
Subject(s) - photonic crystal fiber , materials science , cladding (metalworking) , optics , fiber optic sensor , optical fiber , fusion splicing , polarization maintaining optical fiber , single mode optical fiber , graded index fiber , interferometry , plastic optical fiber , optoelectronics , pressure sensor , dispersion shifted fiber , physics , metallurgy , thermodynamics
A novel distributed fiber optic pressure sensor based on an all-solid photonic band gap fiber is proposed and experimentally demonstrated. The sensor is fabricated by splicing a piece of the photonic crystal fiber (PCF) with a single-mode fiber (SMF), and the free end face of the PCF is filmed with a reflectivity of 99%. The cladding mode is excited at the fiber splice, resulting in the interference between the cladding mode and the core mode. The pressure position can be located by measuring the phase difference of the interferometer, and the pressure can be interrogated by measuring the height of the valley in the white-light optical spectrum. The experimental results show that the pressure and its position along the PCF can be simultaneously interrogated.