Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-07-01

Journal: APPLIED PHYSICS B-LASERS AND OPTICS

Included Journals: EI、SCIE

Volume: 116

Issue: 1

Page Number: 21-26

ISSN: 0946-2171

Abstract: A core-mode Fabry-Perot (FP) interferometer is constructed by using a dual-core photonic crystal fiber (DCPCF). The FP cavity is formed by a single piece of DCPCF, which can also serve as a direct sensing probe without any additional components. We theoretically and experimentally studied its temperature responses in the range of 40-480 A degrees C. The temperature sensitivity is 13 pm/A degrees C which matches the theoretical results. Since the temperature sensitivity of the proposed sensor is independent on cavity length, precise control of the length of FP cavity or photonic crystal fiber is not required. The sensor size can be as short as 100-200 mu m, and its fabrication only involves splicing and cleaving, which make the sensor production very cost-effective. The proposed FP interferometric sensor based on a DCPCF can find applications in high-temperature measurement especially those that need accurate point measurement with high sensitivity.