Fiber-optic sensor array based on Sagnac interferometer with stable phase bias

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We propose and experimentally demonstrate a novel fiber sensor array based on Sagnac interferometer with very simple electronic signal processing. A stable quadrature phase bias was obtained using a phase modulator, and polarization-induced signal fading was suppressed by using a depolarizer and a broad-band source, Phase sensitivity of about 4.0 mu rad(rms)/root Hz at 5 kHz was obtained using a two-sensor array.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2001-02
Language
English
Article Type
Article
Keywords

DEMODULATION; SCHEME

Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.13, no.2, pp.148 - 150

ISSN
1041-1135
URI
http://hdl.handle.net/10203/19861
Appears in Collection
PH-Journal Papers(저널논문)
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