中国激光, 2011, 38 (6): 0601002, 网络出版: 2011-05-26
Ultrafast Laser Fabrication of Novel Fiber Mach-Zehnder Interferometer Sensors and Its Cost-Effective Alternative Manufacturing Methods
Ultrafast Laser Fabrication of Novel Fiber Mach-Zehnder Interferometer Sensors and Its Cost-Effective Alternative Manufacturing Methods
摘要
Abstract
The recent progresses of fiber sensor fabrication in our group are reviewed. Novel inline fiber Mach-Zehnder interferometer (MZI) sensors with various structures are proposed and manufactured by femtosecond laser fabrication and fusion splicing for high-quality sensing of refractivity-sensitive parameters such as temperature, concentration, humidity, pressure, stress and strain: a) for an MZI sensor with a trench on a single-mode fiber, the refractive index (RI) sensitivity of acetone vapor is about 104 nm/RIU (refractive index unit) and the temperature sensitivity is 51.5 pm/℃ from 200 to 875 ℃; b) For an MZI consisting of two micro-air-cavities, the sensitivity is 501.5 nm/RIU and the detection limit is 1.994×10-6 RIU at the refractive index of 1.4; c) to reduce the fabrication cost, a new fusion-splicing based method is proposed to fabricate MZI sensors; the sensitivity is 664.57 nm/RIU with a detection limit of 1.5×10-6 RIU and its cost is tens of times cheaper than those of commercialized long period fiber Gratings; Also, 5×10-5 acetone vapors are successfully detected by the MZI sensors coated with zeolite thin films.
, , , , , , , , . Ultrafast Laser Fabrication of Novel Fiber Mach-Zehnder Interferometer Sensors and Its Cost-Effective Alternative Manufacturing Methods[J]. 中国激光, 2011, 38(6): 0601002. Wang Sumei, Jiang Lan, Li Benye, Zhao Longjiang, Yang Jinpeng, Wang Mengmeng, Xiao Hai, Lu Yongfeng, Hai-Lung Tsai. Ultrafast Laser Fabrication of Novel Fiber Mach-Zehnder Interferometer Sensors and Its Cost-Effective Alternative Manufacturing Methods[J]. Chinese Journal of Lasers, 2011, 38(6): 0601002.