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Title: Resurgent regenerated fiber bragg gratings and thermal annealing techniques for ultra-high temperature sensing beyond 1400 degrees C
Authors: Gunawardena, DS 
Law, OK 
Liu, Z 
Zhong, XX
Ho, YT 
Tam, HY 
Issue Date: 2020
Source: Optics express, 30 Mar. 2020, v. 28, no. 7, p. 10595-10608
Abstract: We report for the first time the resurgence of regenerated fiber Bragg gratings (RFBGs) useful for ultra-high temperature measurements exceeding 1400 degrees C. A detailed study of the dynamics associated with grating regeneration in six-hole microstructured optical fibers (SHMOFs) and single mode fibers (SMFs) was conducted. Rapid heating and rapid cooling techniques appeared to have a significant impact on the thermal sustainability of the RFBGs in both types of optical fibers reaching temperature regimes exceeding 1400 degrees C. The presence of air holes sheds new light in understanding the thermal response of RFBGs and the stresses associated with them, which governs the variation in the Bragg wavelength.
Publisher: Optical Society of America
Journal: Optics express 
EISSN: 1094-4087
DOI: 10.1364/OE.375421
Rights: © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (
Journal © 2020
The Author(s) agree that all copies of the Work made under any of the above rights shall prominently include the following copyright notice: “© 2020 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.”
The following publication Dinusha Serandi Gunawardena, On kit Law, Zhengyong Liu, Xiaoxuan Zhong, Yuk-Ting Ho, and Hwa-Yaw Tam, "Resurgent regenerated fiber Bragg gratings and thermal annealing techniques for ultra-high temperature sensing beyond 1400°C," Opt. Express 28, 10595-10608 (2020) is available at
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