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Proceedings Paper

Design of a high-birefringence two-core photonic crystal fiber for simultaneous measurement of pressure and temperature
Author(s): Chuang Wu; Zi-Wei Feng; Bai-Ou Guan; Hwa-Yaw Tam
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Paper Abstract

We propose and design a high-birefringence two-core photonic crystal fiber for simultaneous measurement of pressure and temperature. One core is centered, while the other is off-center. Both cores are made non-circular by properly modifying the sizes of some air-holes surrounding them. This introduces geometric modal birefringence to the fiber. When a broadband light launches into the centered core and transmits for a few centimeters, the output spectrum is sinusoid-like due to the intermodal coupling of the supermodes guided by the two cores. For x-polarized input light, we find it has a pressure sensitivity of 21.7 pm/MPa and a temperature sensitivity of 11.6 pm/C; for y-polarized input light, we find it has a pressure sensitivity of 18.0 pm/MPa and a temperature sensitivity of 10.7 pm/C. Hence, simultaneous measurement of pressure and temperature can be achieved by using a matrix method.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965528 (1 July 2015); doi: 10.1117/12.2182354
Show Author Affiliations
Chuang Wu, Jinan Univ. (China)
Zi-Wei Feng, Jinan Univ. (China)
Bai-Ou Guan, Jinan Univ. (China)
Hwa-Yaw Tam, Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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