title: End-face scattering loss in integrated-optical waveguides.
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.
authors.forename: H M
authors.initials: HM
authors.lastname: Lee
authors.forename: M C
authors.initials: MC
authors.lastname: Oh
authors.forename: H
authors.initials: H
authors.lastname: Park
authors.forename: W Y
authors.initials: WY
authors.lastname: Hwang
authors.forename: J J
authors.initials: JJ
authors.lastname: Kim