Femtosecond laser inscribed Bragg gratings in gold-coated fiber for space application

Qiaoni Wang; Yuanhong Yang; Jun He; Yiping Wang

doi:10.1117/12.2191975

28 September 2015 Femtosecond laser inscribed Bragg gratings in gold-coated fiber for space application

Qiaoni Wang, Yuanhong Yang, Jun He, Yiping Wang

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963460 (2015) https://doi.org/10.1117/12.2191975
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

We reported a Bragg grating inscribed in gold-coated fiber (FBG) by NIR femtosecond laser (fs) for space application. Gold coating can shield the FBG from ultraviolet radiation and oxygen atom erosion. Cryogenic test, high temperature test, and gamma irradiation test were carried out. The reflectivity of the H2-free FBG remained stable at ± 120 °C for 100 h or with 50.4 krad γ irradiation, and the central wavelength shifted within 5 pm and 1.6 pm respectively. Regeneration of the fs-FBG was observed in case the FBG was annealed at 800 °C for 5 h, and the remained 5% in reflectivity after 19 h. Such fs-FBGs inscribed in gold-coated fiber could be employed as high performance fiber sensors for space application.

Citation Download Citation

Qiaoni Wang, Yuanhong Yang, Jun He, and Yiping Wang "Femtosecond laser inscribed Bragg gratings in gold-coated fiber for space application", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963460 (28 September 2015); https://doi.org/10.1117/12.2191975

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