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Proceedings Paper

Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer
Author(s): 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
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Paper 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 Vπ×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.

Paper Details

Date Published: 3 April 2015
PDF: 12 pages
Proc. SPIE 9368, Optical Interconnects XV, 93680K (3 April 2015); doi: 10.1117/12.2079686
Show Author Affiliations
Xingyu Zhang, The Univ. of Texas at Austin (United States)
Amir Hosseini, Omega Optics, Inc. (United States)
Harish Subbaraman, Omega Optics, Inc. (United States)
Jingdong Luo, Univ. of Washington (United States)
Alex K.- Y. Jen, Univ. of Washington (United States)
Chi-jui Chung, The Univ. of Texas at Austin (United States)
Hai Yan, The Univ. of Texas at Austin (United States)
Zeyu Pan, The Univ. of Texas at Austin (United States)
Robert L. Nelson, Air Force Research Lab. (United States)
Ray T. Chen, The Univ. of Texas at Austin (United States)
Omega Optics, Inc. (United States)


Published in SPIE Proceedings Vol. 9368:
Optical Interconnects XV
Henning Schröder; Ray T. Chen, Editor(s)

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