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Your search keyword '"Jiahao Fang"' showing total 3 results
Start Over Author "Jiahao Fang" Journal 2019 18th international conference on optical communications and networks (icocn)
3 results on '"Jiahao Fang"'

1. Cascaded TCF with WO3 film based Mach–Zehnder interferometer for hydrogen sensing

Author

Sun Zhiqiang, Changyu Shen, Tingting Lang, Chunliu Zhao, Zeyi Ding, Liu Shuyi, Jiahao Fang, Hongchen Chen, Chong Zhang, and Jiaqi Gong

Subjects
Imagination, Materials science, Chemical substance, Hydrogen, business.industry, media_common.quotation_subject, chemistry.chemical_element, Mach–Zehnder interferometer, law.invention, chemistry, Magazine, law, Optoelectronics, Hydrogen concentration, business, Science, technology and society, Sensitivity (electronics), media_common
Abstract

A hydrogen gas sensor based on cascaded TCF with WO 3 film was demonstrated to monitoring the hydrogen concentration. By detecting spectral shifts, the proposed sensor showed a high sensitivity of 2.074444 dB/% under the hydrogen concentration of 0.00% to 1.32%.

Published
2019

2. Peanut-type fiber based hydrogen sensor coated by PDMS covered with WO3/SiO2

Author

Changyu Shen, Liu Shuyi, Chong Zhang, Jing Yu, Chunliu Zhao, Tingting Lang, and Jiahao Fang

Subjects
Interferometry, Optical fiber, Materials science, law, Fiber, Linear correlation, Composite material, Hydrogen sensor, law.invention
Abstract

A hydrogen sensor based on a peanut-type fiber coated with a film of PDMS covered with WO 3 /SiO 2 hybird powder was proposed. Mach-Zehnder interferometer is composed of two peanut-type structures and a single-mode optical fiber. Two peanut-type surfaces were coated with PDMS films coated with WO 3 /SIO 2 powder. The proposed sensor has the sensitivity of 0.47db/% with a linear correlation of 98.3% in the concentration range of 0% - 0.901%.

Published
2019

3. Optical fiber temperature sensor based on Mach-Zehnder interferometer coated with a film of PDMS

Author

Jiahao Fang, Chong Zhang, Liu Shuyi, Yike Xiao, Xiaoling Cao, Jingting Yang, Jing Yu, Huitong Deng, Jiaqi Gong, Changyu Shen, Zeyi Ding, and Yutong Hou

Subjects
Materials science, Optical fiber, business.industry, Single-mode optical fiber, Linearity, 02 engineering and technology, Atmospheric temperature range, Mach–Zehnder interferometer, 01 natural sciences, Finite element method, law.invention, 010309 optics, Interferometry, 020210 optoelectronics & photonics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Optoelectronics, business, Sensitivity (electronics)
Abstract

An optical fiber temperature sensor by using a Mach-Zehner interferometer coated with a film of PDMS was proposed. The Mach-Zehner interferometer is made up of two Bowknot Type Tapers (BTTs) and a single mode fiber. The surface of the two BTTs was coated with a film of PDMS. The energy distribution of the two BTTs was simulated by using the finite element means. The proposed sensor structure has a linearity correlation of 98.46% in temperature responses. Temperature detection sensitivity of 0.1957nm/ °C was obtained under the temperature range from 40 °C to 120°C, which is about 10 times of the similar sensors with a sensitivity of tens pm/ °C.

Published
2019

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