期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 30, 期 7, 页码 931-937出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2011.2177959
关键词
Gyroscopes; photonic-bandgap fibers; resonant fiber-optic gyroscope; RFOG
资金
- Litton Systems, Inc. of Northrop Grumman Corporation
Air-core photonic bandgap fibers (PBFs) have great potential for the resonant fiber-optic gyroscope (RFOG), because they reduce both the Kerr-induced drift and the thermal polarization instability. We experimentally studied an open-loop RFOG in which a 20-m resonant loop of 7-cell air-core fiber is closed by connecting the air-core fiber to a conventional single-mode fiber directional coupler. We measured a random walk of 0.055 degrees/s(1/2) and a long-term drift with a standard deviation of 0.5 degrees/s and a peak-to-peak variation of 2.5 degrees/s over 1 hour. We discuss the sources of error in this RFOG and identify areas for future improvement. We project that with straightforward improvements, tactical-grade performance should be possible.
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