| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Analysis and Measurement of the Displacement Sensor Based on an Up-tapered Mach–Zehnder Interferometer |
| WEN Xiao-Dong1, NING Ti-Gang1**, YOU Hai-Dong1,2, KANG Ze-Xin1, LI Jing1, LI Chao1, FENG Ting1, YU Shao-Wei1, JIAN Wei1 |
1Key Lab of All Optical Network and Advanced Telecommunication Network of Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044
2Science and Information College, Qingdao Agricultural University, Qingdao 266109
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| Cite this article: |
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WEN Xiao-Dong, NING Ti-Gang, YOU Hai-Dong et al 2014 Chin. Phys. Lett. 31 034203 |
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Abstract A displacement sensor based on an up-tapered Mach–Zehnder interferometer (MZI) is proposed and demonstrated experimentally. For this purpose, a fiber MZI is fabricated by using a commercial fusion splicer. Then the transmission spectra of the sensors with different middle fiber lengths are measured by bending the MZIs with different movements of the moving stage. The maximum sensitivity of 2.457 nm/mm is achieved while the shifting of the moving stage changes from 3 mm to 3.5 mm. Note that this kind of up-taper configuration is strong in strength, easy to fabricate and low in cost.
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Received: 29 September 2013
Published: 28 February 2014
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| PACS: |
42.81.Pa
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(Sensors, gyros)
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42.81.Ht
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(Gradient-index (GRIN) fiber devices)
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42.79.Ci
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(Filters, zone plates, and polarizers)
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