title: Directional-coupler power divider by two-step K(+)-ion exchange.
abstract: A directional-coupler power divider by two-step K(+)-ion exchange is proposed and investigated experimentally after some preliminary design calculations. Coupling has been achieved with significant dimensional relaxation. Measurements were also made on the power-dividing and the extinction ratios. With a thin dielectric cladding over the coupling region, a fine tuning is feasible.
authors.forename: G L
authors.initials: GL
authors.lastname: Yip
authors.forename: J
authors.initials: J
authors.lastname: Finak