An investigation on temperature sensitivity of conductive carbon coated fiber Bragg grating

• Main Authors: Mohd Yusof, M. K., Jamaluddin, M.N.H., Muhammad, Farah Diana, Lim, Kok Sing, Ahmad, Harith, Zulkifli, Mohd Zamani
• Format: Article
• Published: Elsevier 2021
• Subjects: QC Physics
• Online Access: http://eprints.um.edu.my/36057/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126750514&doi=10.1016%2fj.rio.2021.100164&partnerID=40&md5=12aecbb691b9e27a1e591ca2ec993b8f; https://doi.org/10.1016/j.rio.2021.100164
• Institution: Universiti Malaya

We propose a conductive carbon coated fiber Bragg grating (FBG) temperature sensor for enhancing temperature sensitivity. The temperature sensitivity of the proposed sensor is effectively enhanced by approximately 4 times higher than those of the bare-type FBG sensors due to thermal expansion and physical stress possessed by the conductive carbon coating, with the operating temperature ranging from 40 °C to 260 °C. The proposed sensor is much more convenient to fabricate compared to other similarly coated FBG sensors, giving a leap advantage of easy reformation of the coating to fit various housings. This proposed sensor is significantly ideal for various applications such as optoelectronic circuit and waveguide temperature measurement. © 2021 The Authors