title: High-quality-factor filter based on a photonic crystal ring resonator for wavelength division multiplexing applications.
abstract: We investigate the properties of ring resonators that are supported by a two-dimensional photonic crystal waveguide. The proposed structure composed of a photonic crystal ring resonator (PCRR) with four scatters can really function as a wavelength division multiplexer. The significance of the design is that the output waveguide is perpendicular to the ring resonator. We numerically demonstrate that the proposed four-channel PCRR device with 3 x 3 inner dielectric rods can provide a transmission efficiency larger than 92%, a quality factor higher than 3800, and crosstalk of less than -32 dB.
authors.affiliation: Electronic Engineering Department, National Kaohsiung University of Applied Sciences, Kaohsiung, 807, Taiwan. ydwu@cc.kuas.edu.tw
authors.forename: Yaw-Dong
authors.initials: YD
authors.lastname: Wu
authors.forename: Tien-Tsorng
authors.initials: TT
authors.lastname: Shih
authors.forename: Jian-Jang
authors.initials: JJ
authors.lastname: Lee