期刊
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
卷 62, 期 4, 页码 575-580出版社
KOREAN PHYSICAL SOC
DOI: 10.3938/jkps.62.575
关键词
Hydrogen sensor; Optical fiber sensor; Polarization-maintaining fiber; Polarization-diversity loop
资金
- Basic Science Research Program through National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010- 0022872]
- R&D Project for Safety and Convenience Parts for Transportation Vehicles through Dongnam Leading Industry Office
- Ministry of Knowledge Economy [R0000811]
- Korea Evaluation Institute of Industrial Technology (KEIT) [R0000811] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2010-0022872] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, we have demonstrated a fiber-optic hydrogen sensor using a polarization-diversity loop interferometer composed of a polarization beam splitter, two quarter-wave plates, and a polarization-maintaining fiber coated with palladium whose thickness was similar to 400 nm. One dip in the output interference spectrum of the proposed sensor, chosen as a sensor indicator, was observed to spectrally shift with increasing hydrogen concentration. At a hydrogen concentration of 4%, the sensing indicator showed a wavelength shift of similar to 2.48 nm. The response time of the proposed sensor was measured as 10-12.5 s and did not show significant dependence on the hydrogen concentration except for a hydrogen concentration of 4%. In particular, compared with other hydrogen sensors based on side-polished fibers or fiber gratings, the proposed sensor is much more durable because UV illumination or physical/chemical etching process is not necessary for the optical fiber and thus is highly resistant to external stress applied on a transverse axis of an optical fiber.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据