Thermal Activation of Regenerated Grating in Hydrogenated Gallosilicate Fiber

Gunawardena, D.S. and Mat-Sharif, K.A. and Lai, M.H. and Lim, Kok Sing and Tamchek, N. and Omar, N.Y.M. and Emami, S.D. and Muhamad-Yasin, S.Z. and Zulkifli, M.I. and Yusoff, Z. and Yang, H.Z. and Abdul-Rashid, H.A. and Ahmad, Harith (2016) Thermal Activation of Regenerated Grating in Hydrogenated Gallosilicate Fiber. IEEE Sensors Journal, 16 (6). pp. 1659-1664. ISSN 1530-437X, DOI

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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
Funders: University of Malaya: Grant FRGS (FP002-2013B), Grant HIR UM.C/625/1/HIR/181, a/c no: J-21001-73860, and Grant UMRG (RG326-15AFR)
Uncontrolled Keywords: Gratings; Fiber gratings; Temperature sensors; Optical fibers; Annealing; Optical fiber sensors
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 11 Oct 2017 01:39
Last Modified: 11 Oct 2018 03:15

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