Fabrication and characterization of a highly temperature sensitive device based on nematic liquid crystal-filled photonic crystal fiber

• Main Authors: Wolinski, Tomasz R., Hu, Dora Juan Juan, Lim, Jun Long, Cui, Ying, Milenko, Karolina, Wang, Yixin, Shum, Perry Ping
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/98987; http://hdl.handle.net/10220/13461
• Institution: Nanyang Technological University

We report on the fabrication and characterization of a highly sensitive temperature sensor by selectively filling the nematic liquid crystal (NLC) 6CHBT into a single void within the photonic crystal fiber (PCF) structure. The temperature response of the device is experimentally characterized, showing good linearity, repeatability, and sensitivity at around -3.90 nm/°C within the temperature range from 44°C to 53°C. The mode properties of the device are theoretically investigated, confirming the mode coupling principle and the temperature sensitivity of the device.