Journal
OPTICS LETTERS
Volume 37, Issue 17, Pages 3483-3485Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.003483
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Funding
- Research Grants Council (RGC) General Research Fund (GRF) grant [416710]
- RGC Ph.D. Fellowship
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We propose and experimentally demonstrate a novel subwavelength grating coupler on silicon-on-insulator, for coupling to optical fibers with a wide optical bandwidth. Theoretical analysis and design optimization of the coupler are described. About 73 nm 1 dB bandwidth was experimentally demonstrated with -5.6 dB coupling efficiency. Better than -3.4 dB efficiency with 86 nm 1 dB bandwidth is predicted for these structures with optimized buried oxide thickness. (c) 2012 Optical Society of America
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