title: Photonic crystal power-splitter based on directional coupling.
abstract: We propose a new power-splitting scheme in two-dimensional photonic crystals that can be applicable to photonic integrated circuits. The proposed power-splitting mechanism is analogous to that of conventional three-waveguide directional couplers, utilizing coupling between guided modes supported by line-defect waveguides. Through the analysis of dispersion curve and field patterns of modes, the position in propagation direction, where an input field is split into a two-folded image, is determined by simple mode analysis. Based on the calculated position, a photonic crystal power-splitter is designed and verified by finite-difference timedomain computation.
authors.forename: Insu
authors.initials: I
authors.lastname: Park
authors.forename: Hyun-Sik
authors.initials: HS
authors.lastname: Lee
authors.forename: Hyun-Jun
authors.initials: HJ
authors.lastname: Kim
authors.forename: Kyung-Mi
authors.initials: KM
authors.lastname: Moon
authors.forename: Seung-Gol
authors.initials: SG
authors.lastname: Lee
authors.forename: Beom-Hoan
authors.initials: BH
authors.lastname: O
authors.forename: Se-Geun
authors.initials: SG
authors.lastname: Park
authors.forename: El-Hang
authors.initials: el-H
authors.lastname: Lee