Title :
Research and optimization of FBG apodization technic based on Double-exposure method
Author :
Xiong, Songsong ; Chen, Shuner ; Ran, Yang ; Liu, Wei Ping
Author_Institution :
Dept. of Electron. & Eng., Jinan Univ., Guangzhou, China
Abstract :
The reflection spectral influence of fiber Bragg gratings (FBG) caused by refractive index of DC component was analyzed. FBG with double exposure apodized by raised cosine beam, was found the best way to eliminate reflection sidelobe among three beams (raised-cosine, Gaussian and cosine beam).Through adjusting Full Width Half Maximum (FWHM) parameter in the best double-exposure apodising function, the optimal apodising function was obtained with its sidelobe suppression value 35dB.
Keywords :
Bragg gratings; optical fibres; optimisation; reflectivity; refractive index; DC; FBG apodization; Gaussian beam; cosine beam; double-exposure method; fiber Bragg gratings; optimization; raised-cosine beam; reflection sidelobe; reflection spectral influence; refractive index; Fiber gratings; Laser beams; Optical fiber theory; Reflection; Reflectivity; Refractive index; FBG; component; double-exposure; refractive index of DC; sidelobe suppression;
Conference_Titel :
Advances in Optoelectronics and Micro/Nano-Optics (AOM), 2010 OSA-IEEE-COS
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-8393-8
Electronic_ISBN :
978-1-4244-8392-1
DOI :
10.1109/AOM.2010.5713527
