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Colorless Grating Couplers Realized By Interleaving Dispersion Engineered Subwavelength Structures

Xiaochuan Xu,Harish Subbaraman,David Kwong,John Covey,Amir Hosseini,Ray T. Chen

Optics letters（2013）

Cited 41|Views1
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Abstract
A wideband grating coupler based on interleaving dispersion engineered subwavelength structures has been proposed and experimentally demonstrated. The fabricated device shows a coupling efficiency of 5.1dB and a 1dB bandwidth of 70 nm.
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Key words
diffraction gratings,interleaving dispersion engineered subwavelength structures,optical couplers,colorless grating couplers,wideband grating coupler,optical dispersion,coupling efficiency
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