Open AccessOptically compensated polarization reciprocity in interferometric fiber-optic gyroscopes
Author(s) -
Zinan Wang,
Yi Yang,
Ping Lu,
Chenglong Liu,
Dong Liang Zhao,
Chao Peng,
Zhenrong Zhang,
Zhengbin Li
Publication year - 2014
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.22.004908
Subject(s) - optics , interferometry , polarization (electrochemistry) , gyroscope , optical fiber , reciprocity (cultural anthropology) , physics , fiber optic sensor , sagnac effect , materials science , psychology , social psychology , chemistry , quantum mechanics
Polarization reciprocity is studied both theoretically and experimentally in an optically compensated configuration of interferometric fiber optic gyroscope (IFOG). In conventional IFOGs based on the minimal scheme, the output port of the coil coupler cannot be used mainly because of its polarization nonreciprocity (PN), and thus it is usually called the "nonreciprocal port". We show that the PN errors at the nonreciprocal port are effectively eliminated by optical compensation. With this unique property, the optically compensated IFOG can possess two low-PN ports for rotation sensing at the same time. From another perspective, one port IFOGs are possible to be constructed with less structural complexity.