Open AccessOrientation-dependant inclinometer based on intermodal coupling of two-LP-modes in a polarization-maintaining photonic crystal fiber
Author(s) -
Qiangzhou Rong,
Xueguang Qiao,
Tuan Guo,
Hangzhou Yang,
Yu Du,
Dan Su,
Ruohui Wang,
Dingyi Feng,
Manli Hu,
Zhouming Feng
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.017576
Subject(s) - photonic crystal fiber , optics , materials science , polarization (electrochemistry) , polarization maintaining optical fiber , offset (computer science) , optical fiber , physics , fiber optic sensor , chemistry , computer science , programming language
A reflective optic-fiber orientation-dependant inclinometer, in which a short piece of polarization-maintaining photonic crystal fiber (PM-PCF) is spliced with a lead-in single mode fiber (SMF) without any offset, is proposed and experimentally demonstrated. The hollow holes within the PM-PCF are partly collapsed due to the directional arc-heating splicing and couple two linearly polarized (LP) modes into the downstream PM-PCF. Then two LP-modes are reflected at the end face of PM-PCF and recoupled back into the lead-in SMF again via the collapsed splicing cross section. A well-defined interference pattern is obtained as the result of polarized modes interference. Both orientation and sensitivity of bending is determined unambiguously with this compact PM-PCF configuration.