Fabrication of long-period fiber gratings by CO2 laser irradiations for high temperature applications

Tao Wei; John Montoya; Jian Zhang; Junhang Dong; Hai Xiao

doi:10.1117/12.731372

5 October 2007 Fabrication of long-period fiber gratings by CO₂ laser irradiations for high temperature applications

Tao Wei, John Montoya, Jian Zhang, Junhang Dong, Hai Xiao

Proceedings Volume 6757, Sensors for Harsh Environments III; 675708 (2007) https://doi.org/10.1117/12.731372
Event: Optics East, 2007, Boston, MA, United States

Abstract

We report in this paper the fabrication of high performance thermal LPFGs by point-by-point CO₂ laser irradiations. These thermal LPFGs have shown much better temperature tolerance and promised applications in high temperature harsh environments. The computer-controlled fabrication system with in situ signal monitoring capability is described. The fabricated LPFGs survived high temperatures up to 800°C. Long term stability test at 550°C for 200 hours indicated that thermal shock at a higher temperature could significantly reduce the drift.

Citation Download Citation

Tao Wei, John Montoya, Jian Zhang, Junhang Dong, and Hai Xiao "Fabrication of long-period fiber gratings by CO₂ laser irradiations for high temperature applications", Proc. SPIE 6757, Sensors for Harsh Environments III, 675708 (5 October 2007); https://doi.org/10.1117/12.731372

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