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Design of a single-multimode-single-mode filter demodulator for fiber Bragg grating sensors assisted by mode observation

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Abstract

We propose a simple analysis of a single-multimode-single-mode fiber (SMSMF) filter by observing the excited modes in multimode fiber (MMF). The method is used to design a SMSMF filter demodu lator for fiber Bragg grating sensors, and a corresponding demodulation system is created. The static and dynamic measurements based on the system are given to prove the feasibility of the intensity demodulator.

© 2009 Optical Society of America

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