Radiation Effects on Fiber Bragg Grating Sensors Written in UV KrF Laser Process Condition
The Journal of the Korean Institute of Information and Communication Engineering(2016)
摘要
We studied the effect of Co 60 gamma-radiation on the FBGs by a variation of grating the fabrication parameters. The FBGs were fabricated in a different UV KrF laser intensity using the same boron co-doped photo-sensitive fiber and exposed to gamma-radiation up to a dose of 33.8 kGy. According to the experimental data and analysis results, We confirmed that the laser intensity for grating inscription has a highly effect on the radiation sensitivity of the FBGs and the radiation-induced Bragg wavelength shift by the change of laser process condition showed a difference more than about 30 %.
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