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

Optics Express
Yunchu LiP Daniel Dapkus

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.

References

Dec 13, 2007·Optics Letters·A YarivA Scherer
Jun 11, 2008·Optics Express·Qianfan XuRaymond G Beausoleil
Sep 3, 2007·Optics Express·Lin ZhangAlan E Willner
Oct 1, 2007·Optics Express·Sasikanth ManipatruniMichal Lipson

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Citations

Oct 1, 2008·Optics Express·Wesley D Sacher, Joyce K S Poon
May 22, 2009·Applied Optics·Thomas Yong Long AngMee Koy Chin
Dec 10, 2014·Optics Letters·Hui YuJoris Van Campenhout
Jul 10, 2012·Optics Express·Yingtao HuJinzhong Yu
Dec 18, 2009·Optics Letters·Wesley D Sacher, Joyce K S Poon
Jun 13, 2014·Optics Express·Xiangdong LiYidong Huang

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