Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6888278 | Optical Fiber Technology | 2018 | 5 Pages |
Abstract
Hollow-core photonic bandgap fibers (HC-PBFs) are suitable for spaceborne fiber optical gyroscopes owing to their excellent environmental adaptability. However, hundreds of small holes full of air at one atmosphere of pressure can make the HC-PBF sensitive to external atmospheric pressure. In this study, we investigated the phase sensitivity of the fundamental mode to external atmospheric pressure for the HC-PBF, and the experimental result indicates that the phase sensitivity is approximately 1.6â¯Ãâ¯10â5â¯ppm/Pa, which is mostly contributed by the change in the pressure-induced length. Through the choice of coating, the phase sensitivity to external atmospheric pressure can be reduced by about a factor of five compared to current HC-PBFs, and the excellent temperature performance can be maintained at the same time.
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Authors
Xiaobin Xu, Yangqian Liu, Fuyu Gao, Ningfang Song,