Thermal Activation of Regenerated Grating in Hydrogenated Gallosilicate Fiber


Gunawardena, Dinusha Serandi and Mat Sharif, Khairul A. and Lai, Man Hong and Lim, Kok Sing and Tamchek, Nizam and Mohamad Omar, Nasr Yousef and Emami, Siamak Dawazdah and Muhamad Yasin, Shahrin Zen and Zulkifli, Mohd Imran and Yusoff, Zulfadzli and Yang, Hang Zhou and Abdul Rashid, Hairul Azhar and Ahmad, Harith (2016) Thermal Activation of Regenerated Grating in Hydrogenated Gallosilicate Fiber. IEEE Sensors Journal, 16 (6). pp. 1659-1664. ISSN 1530-437X

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The thermal regeneration of fiber Bragg gratings inscribed on hydrogenated gallosilicate optical fiber, fabricated using a modified chemical vapor deposition (MCVD) technique followed by a solution doping process, is demonstrated for the first time. A type-I seed grating is thermally regenerated and the evolution of the grating reflectivity in a temperature range between 25 °C and 720 °C is investigated. Temperature responses of 15.2 pm/°C and 15.0 pm/°C are obtained during heating and cooling processes of the regenerated grating (RG), respectively, when performing thermal calibration over a temperature range of 25 °C-750 °C and vice versa. Gallosilicate-based RGs are potential candidates as high-temperature resistant gratings in rare-earth-doped fiber, since they provide high photosensitivity and thermal sustainability with the involvement of a single dopant with a concentration as low as 5 wt%.

Item Type: Article
Uncontrolled Keywords: Optical fiber sensors, temperature sensors, Bragg gratings, optical fiber devices
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA1501-1820 Applied optics. Photonics
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 20 Nov 2017 12:51
Last Modified: 10 Sep 2021 07:57


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