Ultra sensitive NH[formula omitted] gas detection using microfiber Bragg Grating.
- Resource Type
- Article
- Authors
- Fu, Haiwei; Zhang, Jingle; Ding, Jijun; Wang, Qiqi; Li, Huidong; Shao, Min; Liu, Yinggang; Liu, Qingpeng; Zhang, Min; Zhu, Yi; Yang, Chong
- Source
- Optics Communications. Nov2018, Vol. 427, p331-334. 4p.
- Subject
- *GAS detectors
*MICROFIBER optical sensors
*BRAGG gratings
*FIBER optics
*OPTICAL interference
- Language
- ISSN
- 0030-4018
In this paper, a microfiber Bragg grating (MFBG) is proposed and performed to detect ammonia gas directly with high sensitivity. The sensor is fabricated by etching Fiber Bragg grating (FBG) inscribed in a single mode photosensitive optical fiber. The response of the sensor for ammonia gas detection is studied by experiments. The result shows that the MFBG central wavelength red-shift occurs as the ammonia gas concentration increase. The experimental concentration detection sensitivity is about 171 pm/(mg/L) in range of 21.84–43.68 mg/L. And the sensor is insensitive for several possible interfering volatile organic compounds. [ABSTRACT FROM AUTHOR]