title: Performance evaluation of a bigrating as a beam splitter.
abstract: The design of a bigrating for use as a beam splitter is presented. It is based on a rigorous formulation of plane-wave scattering by a bigrating that is composed of two individual gratings oriented in different directions. Numerical results are carried out to optimize the design of a bigrating to perform 1 x 4 beam splitting in two dimensions and to examine its fabrication and operation tolerances. It is found that a bigrating can be designed to perform two functions: beam splitting and polarization purification.
authors.forename: R B
authors.initials: RB
authors.lastname: Hwang
authors.forename: S T
authors.initials: ST
authors.lastname: Peng