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Opt Express. 2012 Jun 18;20(13):14705-13. doi: 10.1364/OE.20.014705.

Fiber-to-chip coupler designed using an optical transformation.

Author information

  • 1Department of Electrical Engineering and Computer Science, Vanderbilt University, 37235, USA. petr.markov@vanderbilt.edu

Abstract

An integrated silicon photonics coupler for fiber to waveguide conversion was designed employing a transformation optics approach. Quasi-conformal mapping was used to obtain achievable material properties, which were realized by a distorted hexagonal lattice of air holes in silicon. The coupler, measuring only 10 μm in length and fabricated with a single-step lithography process, exhibits a peak simulated transmission efficiency of nearly 100% for in-plane mode conversion and a factor of 5 improvement over butt coupling for fiber to waveguide mode conversion in experimental testing.

PMID:
22714531
[PubMed - indexed for MEDLINE]
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