Abstract— The transmission and the reflection of Fiber Bragg grating (FBG) are calculated theoretically under ocean. The nonlinear effects appear on the reflectivity and the transmitivity of traveling signals. A full study for the performance of the nine apodization profiles for the FBG under the effect of temperature, pressure and water depth are investigated. Then, schedules have been done for the optimum values for the reflectivity of all types, selecting the appropriate profile which is the Sinc one giving about 99% reflectivity for the grating.
Keywords— FBG, Transmission, Reflectivity.
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