End-face scattering loss in integrated-optical waveguides
- 1 December 1997
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 36 (34) , 9021-9024
- https://doi.org/10.1364/ao.36.009021
Abstract
An experimental technique to determine the end-face scattering loss in electro-optic polymer channel waveguides is presented. The technique combines the cut-back and the optimum end-fire coupling methods. A loss resulting from the scattering was a prominent source of waveguide coupling loss and was strongly dependent on the end-face roughness of the guiding and cladding layers induced by cleaving. With the use of our investigation methods, other losses could also be examined with ease and high reliability.Keywords
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