Experimental Technique to characterize Macrobending Loss in Single Mode Fiber
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Date
2010-06
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Addis Ababa Universty
Abstract
An experimental technique of macrobending losses for a single mode fiber (SMF) with
different radius of curvature is presented. Macrobending losses for SMF are investigated
experimentally, showing that a tight bent of fiber has a significant impact on the power
loss. This experimental measurement suggests how this method is crucial to characterize
macrobending at wavelength of interest even to calculate the power loss due to bending,
to determine the spectral window at which the fiber can effectively operates, to predict
the bend loss for a higher wavelength from the trend of shorter wavelengths. This thesis
work also investigates the variation of the constants, CR and C , which depends on the
waveguide dimension, with respect to shorter wavelengths using He-Ne laser and
Mercury Vapor Lamp sources of light that emits different wavelengths in the visible and
ultraviolet region of an optical spectrum using an optic beam launch method.
Corresponding experimental tests are presented, which agree with the theoretical results
that show, the bent fiber at different bend radii has a significant influence on the total loss
of the fiber.
Key words: macrobending ; optic beam launch; optical spectrum; radius of curvature:
Single mode fiber: spectral window; power loss
Description
Keywords
Macrobending, Optic beam launch, Optical spectrum, Radius of curvature, Single mode fiber, Spectral window, Power loss