Title :
A Bandwidth-Tuning Device Based on Polymer-Packaged Fiber Bragg Grating
Author :
Jiang, Biqiang ; Zhao, Jianlin ; Qin, Chuan ; Fan, Fan ; Huang, Zhao
Author_Institution :
Key Lab. of Space Appl. Phys. & Chem., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
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.
Keywords :
Bragg gratings; finite element analysis; optical fibre filters; optical polymers; spectral line broadening; FBG reflection spectrum; bandwidth-tuning device; linear spectral broadening; polymer-filled rigid cylinder; polymer-packaged fiber Bragg grating; pressure 0.8 MPa; pressure-induced axial strain gradient; rigorous finite-element method; transfer matrix method; Bandwidth; Chirp; Fiber gratings; Polymers; Reflection; Strain; Fiber Bragg grating (FBG); polymer-packaged; sensor; spectral broadening; tunable filter;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2158813
