Multimode optical fibers: interplay of absorption and radiation losses.
We present results for power transmitted when a typical multimode optical fiber is excited by a Lamber-tian source. Power attenuation is due to absorbing core and cladding materials and radiation loss due to reflections from the circular cross section. Radiation loss is responsible for a significant power reduction (20-25% for Lambertian source) over distances much less than those for which material absorption is important.
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