DocumentCode :
855025
Title :
Microchanneled Chirped Fiber Bragg Grating Formed by Femtosecond Laser-Aided Chemical Etching for Refractive Index and Temperature Measurements
Author :
Fu, Hongyan ; Zhou, Kaiming ; Saffari, Pouneh ; Mou, Chengbo ; Zhang, Lin ; He, Sailing ; Bennion, Ian
Volume :
20
Issue :
19
fYear :
2008
Firstpage :
1609
Lastpage :
1611
Abstract :
In this work, a microchanneled chirped fiber Bragg grating (MCFBG) is proposed and fabricated through the femtosecond laser-assisted chemical etching. The microchannel ( \\sim 550 \\mu m) gives access to the external index liquid, thus inducing refractive index (RI) sensitivity to the structure. In the experiment, the transmission bands induced by the reduced effective index in the microchannel region were used to sense the surrounding RI and temperature changes. The experimental results show good agreement with the theoretical analysis. The proposed MCFBG offers enhanced RI sensitivity without degrading the robustness of the device showing good application potential as bio-chemical sensors.
Keywords :
Biosensors; Chemical lasers; Degradation; Etching; Fiber lasers; Microchannel; Refractive index; Robustness; Temperature measurement; Temperature sensors; Femtosecond (fs) laser; fiber Bragg gratings (FBGs); fiber sensors; microchannel; refractive index (RI) sensor;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2008.2002727
Filename :
4620178
Link To Document :
بازگشت