Title :
Characteristics of refractive index sensor based on adjusting gap fiber Bragg grating
Author :
Changyu Shen ; Chuan Zhong ; Li, Ke ; Zhou, Wenjun
Author_Institution :
Inst. of Optoelectron. Technol., China Jiliang Univ., Hangzhou, China
Abstract :
A refractive index sensor based on adjusting gap fiber Bragg grating was designed. Spectral characteristics of gap FBG are analyzed based on the coupled-mode theory with the transfer matrix method. As the refractive index of the media in the gap increased, the peak wavelength has a red-shift. Through measuring the reflectivity of the side band, the refractive index of media in the gap can be obtained.
Keywords :
Bragg gratings; coupled mode analysis; refractive index; adjusting gap fiber Bragg grating; coupled-mode theory; refractive index sensor; spectral characteristics; transfer matrix method; Fiber gratings; Gratings; Media; Optical fiber sensors; Reflectivity; Refractive index; Gap fiber Bragg Grating; Refractive index sensor;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2010 Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-7111-9
DOI :
10.1109/ACP.2010.5682716
