Ultrafast Laser Fabrication of Novel Fiber Mach-Zehnder Interferometer Sensors and Its Cost-Effective Alternative Manufacturing Methods

Wang Sumei; Jiang Lan; Li Benye; Zhao Longjiang; Yang Jinpeng; Wang Mengmeng; Xiao Hai; Lu Yongfeng; Hai-Lung Tsai

doi:doi:10.3788/cjl201138.0601002

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

论文大纲

Wang Sumei ¹Jiang Lan ¹Li Benye ¹Zhao Longjiang ¹Yang Jinpeng ¹Wang Mengmeng ¹Xiao Hai ²Lu Yongfeng ³Hai-Lung Tsai ⁴

作者单位

¹ School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

² Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA

³ Department of Electrical Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0511, USA

⁴ Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA

sensors novel fiber Mach-Zehnder interferometer femtosecond laser micromachining fusion splicing

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.

参考文献

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, , , , , , , , . 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.

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