Bridging the gap between optical fibers and silicon photonic integrated circuits
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- 13 January 2014
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 22 (2) , 1277-1286
- https://doi.org/10.1364/oe.22.001277
Abstract
We present a rigorous approach for designing a highly efficient coupling between single mode optical fibers and silicon nanophotonic waveguides based on diffractive gratings. The structures are fabricated on standard SOI wafers in a cost-effective CMOS process flow. The measured coupling efficiency reaches −1.08 dB and a record value of −0.62 dB in the 1550 nm telecommunication window using a uniform and a nonuniform grating, respectively, with a 1dB-bandwidth larger than 40 nm.Keywords
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