title: Extremely small multimode-interference coupled triangular resonator with sharp angle of incidence.
abstract: Novel triangular ring resonators combining extremely small multimode-interference (MMI) coupler, low loss total internal reflection (TIR) mirrors, and semiconductor optical amplifiers are reported for the first time. The MMI length of 90 microm is among the shortest reported. The incidence angle of the TIR mirror inside the resonator is 22 degrees. A free-spectral range of approximately 2 nm is observed near 1550 nm along with an on-off ratio of 17 dB. The triangular resonators with a sharp angle are very attractive components due to their promise of compact size and high levels of integration. Therefore, large numbers of resonators can be integrated on a chip to increase functionality in future optical wavelength division multiplexing system.
authors.affiliation: Microwave and Lightwave Telecommunications Lab., School of Electrical and Electronics Engineering, Chung-Ang University, Dongjak-ku, Seoul, 156-756, Korea.
authors.forename: Doo Gun
authors.initials: DG
authors.lastname: Kim
authors.forename: Geum-Yoon
authors.initials: GY
authors.lastname: Oh
authors.forename: Woon-Kyung
authors.initials: WK
authors.lastname: Choi
authors.forename: Hyo Jin
authors.initials: HJ
authors.lastname: Kim
authors.forename: Seon Hoon
authors.initials: SH
authors.lastname: Kim
authors.forename: Hyun Chul
authors.initials: HC
authors.lastname: Ki
authors.forename: Sang-Taek
authors.initials: ST
authors.lastname: Kim
authors.forename: Hang Ju
authors.initials: HJ
authors.lastname: Ko
authors.forename: Tae Un
authors.initials: TU
authors.lastname: Kim
authors.forename: Myoung Hak
authors.initials: MH
authors.lastname: Yang
authors.forename: Hwe Jong
authors.initials: HJ
authors.lastname: Kim
authors.forename: Jong Chang
authors.initials: JC
authors.lastname: Yi
authors.forename: Youngchul
authors.initials: Y
authors.lastname: Chung
authors.forename: Nadir
authors.initials: N
authors.lastname: Dagli
authors.forename: Young-Wan
authors.initials: YW
authors.lastname: Choi
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008027:Light; D008904:Miniaturization; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D012666:Semiconductors; D018511:Systems Integration; D014732:Vibration