Fiber curvature sensor based on Mach-Zehnder interferometer using up-taper cascaded long-period grating

Zhang Sulei; Gong Huaping; Qian ZihengJin YongxingDong Xinyong

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Fiber curvature sensor based on Mach-Zehnder interferometer using up-taper cascaded long-period grating

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A novel fiber curvature sensor based on Mach-Zehnder interferometer using up-taper cascaded long-period grating is proposed. The variation of the sensor's curvature will change the phase difference of core mode and cladding mode in the sensor, and will finally induce a wavelength shift in the transmission spectrum. By monitoring the wavelength shift, a sensor for bending measurement is achieved. Experimental results show that the curvature sensitivity of the proposed sensor is as high as -12.555 nm/m(-1) in the curvature range of 0.706-3.444 m(-1). As the curvature increases, the dip wavelength has a blue shift. The curvature resolution of the proposed sensor is about 1.59 x 10(-3) m(-1). And the temperature effect is also investigated. (c) 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:246-248, 2016

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《Microwave and optical technology letters》 |2016年第1期|246-248|共3页
作者
Zhang Sulei; Gong Huaping; Qian ZihengJin YongxingDong Xinyong;
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作者单位

Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Peoples R China;

China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Peoples R China;

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原文格式 PDF
正文语种英语
中图分类光学;
关键词
optical fiber sensor; curvature sensor; Mach-Zehnder interferometer;

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Fiber curvature sensor based on Mach-Zehnder interferometer using up-taper cascaded long-period grating

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