期刊
SENSORS AND ACTUATORS A-PHYSICAL
卷 272, 期 -, 页码 23-27出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2018.01.055
关键词
Microstructured optical fiber; Hollow optical fiber; Optical fiber sensor; In-fiber integrated
资金
- National Natural Science Foundation of China (NSFC) [11574061, 61405043, 61377085, 61290314, 61535004, 61307005, 61227013, U1231201]
- Postdoctoral Science Foundation of China [2014M551217]
- Natural Science Foundation of Heilongjiang Province [F201405]
- Fundamental Research Funds for the Central Universities
We demonstrate an in-fiber integrated highly-sensitive gas pressure sensor based on a special designed hollow eccentric twin-core optical fiber (HTCF). In this design, the core in the hole and the core in the annular cladding of the HTCF are separately used as sensing arm and reference arm. Then, in-fiber gas pressure detection can be first realized in the long hole of the HTCF. The experimental results show that the sensor exhibits a gas pressure sensitivity of 0.42 nm/bar, with low temperature sensitivity of -51 pm/degrees, and a maximum bending sensitivity of 98 pm/mu m. Comparing with traditional optical fiber gas pressure sensors, this device first realizes in-fiber gas pressure detecting through the special designed optical fiber with a compact size which can be easily connected and integrated in practical applications. (C) 2018 Elsevier B.V. All rights reserved.
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