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Radiation Vulnerability of Fiber Bragg Gratings in Harsh Environments

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Academic year: 2021

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Figure

Fig. 1. Transmission spectra of the FBGs. To have a clearer graph, their zero amplitude lines were shifted by 5 dB.
Fig. 3 reports the RIA values recorded some months after irra- irra-diation with the OTDR at 1550 nm
Fig. 5. Radiation-induced changes for the fs-FBG written in the F-doped fiber: (a) the Bragg wavelength decreases with dose; (b) the peak FWHM (continuous black line) and amplitude (dotted red line) initially increase and then decrease.
TABLE II R ADIATION -I NDUCED E RROR

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