Design of a high-birefringence two-core photonic crystal fiber for simultaneous measurement of pressure and temperature

Chuang Wu; Zi-Wei Feng; Bai-Ou Guan; Hwa-Yaw Tam

doi:10.1117/12.2182354

1 July 2015 Design of a high-birefringence two-core photonic crystal fiber for simultaneous measurement of pressure and temperature

Chuang Wu, Zi-Wei Feng, Bai-Ou Guan, Hwa-Yaw Tam

Author Affiliations +

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965528 (2015) https://doi.org/10.1117/12.2182354
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

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.

Citation Download Citation

Chuang Wu, Zi-Wei Feng, Bai-Ou Guan, and Hwa-Yaw Tam "Design of a high-birefringence two-core photonic crystal fiber for simultaneous measurement of pressure and temperature", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965528 (1 July 2015); https://doi.org/10.1117/12.2182354

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