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13 March 2015 Low-loss mode converter for coupling light into slotted photonic crystal waveguide
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Proceedings Volume 9368, Optical Interconnects XV; 936807 (2015)
Event: SPIE OPTO, 2015, San Francisco, California, United States
We design, fabricate and experimentally demonstrate a highly efficient adiabatic mode converter for coupling light into a silicon slot waveguide with a slot width as large as 320nm. This strip-to-slot mode converter is optimized to provide a measured insertion loss as low as 0.08dB. Our mode converter provides 0.1dB lower loss compared to a conventional V-shape mode converter. This mode converter is used to couple light into and out of a 320nm slot photonic crystal waveguide, and it is experimentally shown to improve the coupling efficiency up to 3.5dB compared to the V-shape mode converter, over the slow-light wavelength region.
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Xingyu Zhang, Harish Subbaraman, Amir Hosseini, Zeyu Pan, Hai Yan, Chi-jui Chung, and Ray T. Chen "Low-loss mode converter for coupling light into slotted photonic crystal waveguide", Proc. SPIE 9368, Optical Interconnects XV, 936807 (13 March 2015);

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