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A Bandwidth-Tuning Device Based on Polymer-Packaged Fiber Bragg Grating

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5 Author(s)
Biqiang Jiang ; Key Lab. of Space Appl. Phys. & Chem., Northwestern Polytech. Univ., Xi''an, China ; Zhao, Jianlin ; Chuan Qin ; Fan Fan
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A novel bandwidth-tuning method based on polymer-packaged fiber Bragg grating (FBG) is proposed and experimentally demonstrated. A FBG is embedded along the central axis in a polymer-filled rigid cylinder. The pressure-induced axial strain gradient along the FBG is calculated by using rigorous finite-element method (FEM). The corresponding broadening of the FBG reflection spectrum was numerically simulated using a transfer matrix method and experimentally analyzed. A linear spectral broadening up to 3.12 nm for a pressure of 0.8 MPa was observed.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 17 )