title: Quadrature phase detector using two-mode waveguides.
abstract: We present a novel design for quadrature phase detection utilizing two-mode optical waveguides for optical interferometric systems. A pair of interferometric signals having quadrature optical phase information can be obtained from the near-field and far-field patterns of a two-mode waveguide output. The operational principle is based on a pi/2 differential phase shift between two modal beams occurring during their transition from near-field to far-field radiation patterns.
authors.forename: S Y
authors.initials: SY
authors.lastname: Huang
authors.forename: H G
authors.initials: HG
authors.lastname: Park
authors.forename: B Y
authors.initials: BY
authors.lastname: Kim