Journal
IEEE PHOTONICS JOURNAL
Volume 4, Issue 1, Pages 114-118Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOT.2011.2180708
Keywords
Photonic crystal fiber (PCF); strain sensor; interferometer; temperature-insensitive; intensity modulated
Funding
- National Basic Research Program of China (973 Program) [2010CB327804]
- National Natural Science Foundation of China [60807021]
- Zhejiang Provincial Natural Science Foundation of China [R1080087]
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In this paper, a novel strain sensor is proposed and demonstrated by employing a modified photonic crystal fiber (PCF)-based Mach-Zehnder interferometer, in which a collapsed region is introduced at the middle point of the PCF to improve the extinction ratio. Experimental results show that this proposed structure has a high sensitivity of 11.22 dB/m epsilon over a range of 1.28 m epsilon and high-temperature stability.
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