Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer

Xingyu Zhang; Amir Hosseini; Harish Subbaraman; Jingdong Luo; Alex K.- Y. Jen; Chi-jui Chung; Hai Yan; Zeyu Pan; Robert L. Nelson; Ray T. Chen

doi:10.1117/12.2079686

3 April 2015 Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer

Xingyu Zhang, Amir Hosseini, Harish Subbaraman, Jingdong Luo, Alex K.- Y. Jen, Chi-jui Chung, Hai Yan, Zeyu Pan, Robert L. Nelson, Ray T. Chen

Author Affiliations +

Proceedings Volume 9368, Optical Interconnects XV; 93680K (2015) https://doi.org/10.1117/12.2079686
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

Silicon-organic hybrid integrated devices have emerging applications ranging from high-speed optical interconnects to photonic electromagnetic-field sensors. Silicon slot photonic crystal waveguides (PCWs) filled with electro-optic (EO) polymers combine the slow-light effect in PCWs with the high polarizability of EO polymers, which promises the realization of high-performance optical modulators. In this paper, a broadband, power-efficient, low-dispersion, and compact optical modulator based on an EO polymer filled silicon slot PCW is presented. A small voltage-length product of V_π×L=0.282V×mm is achieved, corresponding to an unprecedented record-high effective in-device EO coefficient (r₃₃) of 1230pm/V. Assisted by a backside gate voltage, the modulation response up to 50GHz is observed, with a 3-dB bandwidth of 15GHz, and the estimated energy consumption is 94.4fJ/bit at 10Gbit/s. Furthermore, lattice-shifted PCWs are utilized to enhance the optical bandwidth by a factor of ~10X over other modulators based on non-band-engineered PCWs and ring-resonators.

Citation Download Citation

Xingyu Zhang, Amir Hosseini, Harish Subbaraman, Jingdong Luo, Alex K.- Y. Jen, Chi-jui Chung, Hai Yan, Zeyu Pan, Robert L. Nelson, and Ray T. Chen "Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer", Proc. SPIE 9368, Optical Interconnects XV, 93680K (3 April 2015); https://doi.org/10.1117/12.2079686

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