Experimental Technique To Characterize Macrobending Loss In Single Mode Fiber

An experimental technique of macrobending losses for a single mode fiber (SMF) withrndifferent radius of curvature is presented. Macrobending losses for SMF are investigatedrnexperimentally, showing that a tight bent of fiber has a significant impact on the powerrnloss. This experimental measurement suggests how this method is crucial to characterizernmacrobending at wavelength of interest even to calculate the power loss due to bending,rnto determine the spectral window at which the fiber can effectively operates, to predictrnthe bend loss for a higher wavelength from the trend of shorter wavelengths. This thesisrnwork also investigates the variation of the constants, CR and C , which depends on thernwaveguide dimension, with respect to shorter wavelengths using He-Ne laser andrnMercury Vapor Lamp sources of light that emits different wavelengths in the visible andrnultraviolet region of an optical spectrum using an optic beam launch method.rnCorresponding experimental tests are presented, which agree with the theoretical resultsrnthat show, the bent fiber at different bend radii has a significant influence on the total lossrnof the fiber.rnKey words: macrobending ; optic beam launch; optical spectrum; radius of curvature:rnSingle mode fiber: spectral window; power loss

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