期刊
OPTICS COMMUNICATIONS
卷 297, 期 -, 页码 7-11出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2013.01.063
关键词
Photonic crystal fiber; Mach-Zehnder interferometer; Strain sensor
类别
资金
- National Science Foundations of China [61275125]
- Shenzhen Science and Technology project [JC201005280473A, JC201104210019A, ZDSY20120612094753264]
- Shenzhen Key Laboratory of Sensor Technology Open Project [SST201201]
Mach-Zehnder interferometer strain sensors made from pieces of photonic crystal fiber spliced to standard single mode fibers are fabricated with different lengths. High strain sensitivity of 2.1 pm/mu epsilon at 1550 nm is achieved with the length of 45 mm. The interference is induced by the core mode and the high order core mode due to the special air hole structure of PCF, which is independent of the surrounding refractive index. The temperature sensitivity (similar to 13.24 pm/degrees C) is relatively low. This structure is good in avoiding cross sensitivity in strain measurement and is fabricated with a simple process and low cost. (C) 2013 Elsevier B.V. All rights reserved.
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