Fiber-to-chip coupler designed using an optical transformation | Zendy

Petr Markov | Zendy; Jason Valentine | Zendy; Sharon M. Weiss | Zendy

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Fiber-to-chip coupler designed using an optical transformation

Author(s) -

Petr Markov,

Jason Valentine,

Sharon M. Weiss

Publication year - 2012

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.014705

Subject(s) - optics , materials science , single mode optical fiber , lithography , optical fiber , waveguide , transformation optics , coupled mode theory , optoelectronics , refractive index , metamaterial , physics

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.

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