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Proceedings Paper

Low-loss mode converter for coupling light into slotted photonic crystal waveguide
Author(s): Xingyu Zhang; Harish Subbaraman; Amir Hosseini; Zeyu Pan; Hai Yan; Chi-jui Chung; Ray T. Chen
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Paper Abstract

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.

Paper Details

Date Published: 13 March 2015
PDF: 13 pages
Proc. SPIE 9368, Optical Interconnects XV, 936807 (13 March 2015); doi: 10.1117/12.2076499
Show Author Affiliations
Xingyu Zhang, The Univ. of Texas at Austin (United States)
Harish Subbaraman, Omega Optics, Inc. (United States)
Amir Hosseini, Omega Optics, Inc. (United States)
Zeyu Pan, The Univ. of Texas at Austin (United States)
Hai Yan, The Univ. of Texas at Austin (United States)
Chi-jui Chung, The Univ. of Texas at Austin (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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