title: Improved optical coupling in waveguide photodetectors incorporating a wedge-shaped input facet.
abstract: A simple method for improving the input coupling in uncleaved waveguide photodetectors is demonstrated. A wedge-shaped recess is incorporated into the input facet to reduce reflection. Over a range of device sizes and wedge shapes, mean quantum efficiency was increased by 16% relative to flat, uncleaved input facets.
authors.forename: G S
authors.initials: GS
authors.lastname: Kinsey
authors.forename: R
authors.initials: R
authors.lastname: Sidhu
authors.forename: A L
authors.initials: AL
authors.lastname: Holmes
authors.forename: J C
authors.initials: JC
authors.lastname: Campbell