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Attenuation in planar optical waveguides: Comparison of theory and experiment

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2 Author(s)
Ames, G. ; Institute of Optics,University of Rochester,NY ; Hall, Dennis G.

Experimental measurements of the guided-wave attenuation and surface roughness for three Corning 7059 glass waveguides were compared to the predictions of a surface-scattering theory. The attenuation coefficient was calculated by means of a first-order boundary-perturbation theory, and was used to examine the role of the various parameters in determining guided-wave attenuation. The comparison to experiment shows that the measured level of surface roughness is insufficient to account for the measured TE0attenuation, a fact that suggests that scattering by refractive-index fluctuations in the volume of these waveguides dominates.

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Quantum Electronics, IEEE Journal of  (Volume:19 ,  Issue: 5 )