Open AccessThe temperature sensitivity of Sagnac loop interferometer based on polarization maintaining side-hole fiber
Author(s) -
Dae Seung Moon,
Bok Hyeon Kim,
Aoxiang Lin,
Greg Sun,
YoungGeun Han,
WonTaek Han,
Youngjoo Chung
Publication year - 2007
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.15.007962
Subject(s) - optics , birefringence , interferometry , materials science , polarization (electrochemistry) , fibre optic gyroscope , optical fiber , thermal expansion , sensitivity (control systems) , refractive index , physics , chemistry , metallurgy , electronic engineering , engineering
The temperature sensitivity of modal birefringence (dB/dT) of different types of polarization-maintaining fibers with side holes was measured using a Sagnac loop interferometer. The thermal expansion coefficient can be varied by controlling the amount of germanium doped in the core region. Using this method, dB/dT could be made higher (~10(-7)/ degrees C) than that of standard PMFs (~10(-8)/ degrees C) or comparable to that of standard PMFs (~10(-9)/ degrees C).