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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 17 — Aug. 18, 2008
  • pp: 13342–13348

Coupled-ring-resonator-based silicon modulator for enhanced performance

Yunchu Li, Lin Zhang, Muping Song, Bo Zhang, Jeng-Yuan Yang, Raymond G. Beausoleil, Alan E. Willner, and P. Daniel Dapkus  »View Author Affiliations

Optics Express, Vol. 16, Issue 17, pp. 13342-13348 (2008)

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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. Simulations show that: (i) potentially 60-Gb/s non-return-to-zero (NRZ) data modulation with 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.

© 2008 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(130.0130) Integrated optics : Integrated optics
(200.4650) Optics in computing : Optical interconnects
(230.4110) Optical devices : Modulators

ToC Category:
Integrated Optics

Original Manuscript: July 7, 2008
Revised Manuscript: August 6, 2008
Manuscript Accepted: August 8, 2008
Published: August 14, 2008

Yunchu Li, Lin Zhang, Muping Song, Bo Zhang, Jeng-Yuan Yang, Raymond G. Beausoleil, Alan E. Willner, and P. Daniel Dapkus, "Coupled-ring-resonator-based silicon modulator for enhanced performance," Opt. Express 16, 13342-13348 (2008)

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