NDLI: Crosstalk Reduction and Demodulation Stability Promotion in Inline Fiber Fabry–Pérot Sensor Array Using Phase Generated Carrier Scheme

Content Provider	IEEE Xplore Digital Library
Author	Jiang, P. Ma, L. Wang, W. Hu, Z. Hu, Y.
Copyright Year	1983
Abstract	An inline time-division multiplexing (TDM) fiber Fabry–Pérot sensor array based on the low-reflectivity fiber Bragg gratings (FBGs) is promising for lots of sensing applications. The intrinsic multireflection (MR) between the FBGs with the same Bragg wavelength is a serious problem, which induces crosstalk and generates false detection information. Furthermore, the amplitude of the demodulated signal cannot reach a stable state due to the MR. Here, we presented a full theoretical demonstration of the MR-induced crosstalk fluctuation and demodulation instability, where the phase generated carrier method was used as the interrogation scheme. An interference synthesis method was presented to reduce the MR-induced crosstalk and to promote the demodulation stability simultaneously. The experimental results showed that a crosstalk reduction of 18 dB and a demodulation stability promotion of 1.42 dB could be achieved with the FBG reflectivity of 5%. The principle of the method can be extended to the array with more TDM channels.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1006
Ending Page	1014
Page Count	9
File Size	1024253
File Format	PDF
ISSN	07338724
Volume Number	34
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Crosstalk Arrays Demodulation Time division multiplexing Fiber gratings multiple reflections fiber Bragg grating inline fiber Fabry-Perot interference synthesis
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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