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A fiber Bragg grating sensor demodulation technique using a polarization maintaining fiber loop mirror

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4 Author(s)
Seunghwan Chung ; Sch. of Electr. Eng., Seoul Nat. Univ., South Korea ; Jungho Kim ; Bong-Ahn Yu ; Byoungho Lee

We propose and experimentally demonstrate a simple, passive, and self-referencing wavelength shift detection scheme for use in fiber Bragg grating sensing systems. The demodulation system is based on the interference between two modes in a polarization maintaining fiber loop mirror. Although it involves the use of an interference technique, it is stable compared with other conventional interference demodulators.

Published in:

IEEE Photonics Technology Letters  (Volume:13 ,  Issue: 12 )