Cheong, Y.K. and Chong, W.Y. and Chong, S.S. and Lim, K.S. and Ahmad, Harith (2014) Regenerated Type-IIa Fibre Bragg Grating from a Ge–B codoped fibre via thermal activation. Optics & Laser Technology, 62. pp. 69-72. ISSN 0030-3992, DOI https://doi.org/10.1016/j.optlastec.2014.01.007.
Full text not available from this repository.Abstract
A Type-IIa Regenerated Fibre Bragg Grating (RFBG) was fabricated via a thermal activation process at 600 °C, from a saturated type-I Hydrogenated (Type-IH) seed grating, inscribed in a germanium–boron codoped (Ge–B) fibre. Rarely, dynamics of the induced index change featured a negative index grating, wherein blueshifts of Bragg wavelength were observed during a thermal regeneration process. The Type-IIa RFBG has been tested and verified to be temperature stable upon two different sensing temperature ranges, which are 100–600 °C and 600–1000 °C, separately. For the low temperature range, the RFBG showed no significant hysteresis and demonstrated an excellent repeatability, however, with non-linear temperature responses. For the high temperature range, the RFBG showed linear temperature responses with negligible fluctuations in grating stability. The simple regenerative mechanism opens up a new possibility of realizing low cost and yet highly reproducible and reliable grating-based sensors.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Fibre Bragg Grating; Thermal regeneration; High temperature sensing |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 26 Oct 2015 00:58 |
| Last Modified: | 11 Oct 2018 02:56 |
| URI: | http://eprints.um.edu.my/id/eprint/14300 |
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