Effect of two annealing processes on the thermal regeneration of fiber Bragg gratings in hydrogenated standard optical fibers

Lu, Kai and Yang, Hangzhou and Lim, Kok Sing and Ahmad, Harith and Zhang, Pan and Tian, Qin and Ding, Xiangzi and Qiao, Xueguang (2018) Effect of two annealing processes on the thermal regeneration of fiber Bragg gratings in hydrogenated standard optical fibers. Applied Optics, 57 (24). pp. 6971-6975. ISSN 1559-128X

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Official URL: https://doi.org/10.1364/AO.57.006971

Abstract

In this work, we demonstrate the thermal regeneration of fiber Bragg gratings written in the hydrogenated standard communication optical fibers by two annealing processes. The first annealing process is done at an intermediate temperature (500°C, 700°C, and 900°C) for a specific period of time before cooling down to room temperature. The second annealing is at 1000°C in which the thermal regeneration is attained. The experimental results show that the regenerated gratings that are preannealed at 700°C have charted a reflectivity larger than 65%. They have higher thermal stability compared to that of the standard annealing process. Meanwhile the difference in temperature sensitivity is very small. The temperature sensitivities of regenerated gratings, which have undergone only two annealing processes, are 16.1 pm/°C and 15.8 pm/°C, respectively.

Item Type: Article
Uncontrolled Keywords: Annealing process; Intermediate temperatures; Regenerated grating; Temperature sensitivity; Thermal regeneration
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 29 May 2019 03:35
Last Modified: 29 May 2019 03:35
URI: http://eprints.um.edu.my/id/eprint/21383

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