title: Coupled-ring-resonator-based silicon modulator for enhanced performance.
abstract: A compact silicon coupled-ring modulator structure is proposed. Two rings are coupled to each other, and only one of these rings is actively driven and over-coupled to a waveguide, which enables high modulation speed. The resultant notch filter profile is steeper than that of the single ring and has exhibited a smaller resonance shift and lower driving electrical power. Simulation results include: (i) potentially 60-Gb/s non-return-to-zero (NRZ) data modulation and over 20-dB extinction ratio can be achieved by shifting the active ring by a 20 GHz resonance shift, (ii) the frequency chirp of the modulated signals can be adjusted by varying the coupling coefficient between the two rings, and (iii) dispersion tolerance at 0.5-dB power penalty is extended from 18 to 85 ps/nm, for a 40-Gb/s NRZ signal.
authors: Dept of Electrical Engineering, Univ of Southern California, Los Angeles, CA 90089, USA. yunchuli@usc.edu
authors: Yunchu
authors: Y
authors: Li
authors: Lin
authors: L
authors: Zhang
authors: Muping
authors: M
authors: Song
authors: Bo
authors: B
authors: Zhang
authors: Jeng-Yuan
authors: JY
authors: Yang
authors: Raymond G
authors: RG
authors: Beausoleil
authors: Alan E
authors: AE
authors: Willner
authors: P Daniel
authors: PD
authors: Dapkus
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008027:Light; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012825:Silicon / Q000737:chemistry*; D013685:Telecommunications / Q000295:instrumentation*; D014159:Transducers
chemical_list: D012825:Silicon