Losses in diffused optical waveguides |
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Authors: | I Savatinova P Simova L Tsonev |
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Institution: | (1) Institute of Solid State Physics, Bulgarian Academy of Sciences, BG-1113 Sofia, Bulgaria |
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Abstract: | It has been shown that the attenuation characteristics of TE modes in diffused waveguides are different from those of a conventional
slab. A simple semiempirical analysis is performed on the base of a ray-optics picture assuming a parabolic index distribution.
Analytical expressions for surface scattering and volume loss are derived. The analysis precisely describes the modal loss
behaviour of Ag+ ion-exchanged waveguides in glass (new results) and Nb diffused waveguides in LiTaO3 (data reported by other authors). |
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Keywords: | 42 82 77 20 78 60 |
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