Authors

R. El-Ganainy; A. Eisfeld; M. Levy;D. N. Christodoulides

Comments

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"This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in the linked citation and may be found originally at Applied Physics Letters."

Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

WAVE-GUIDE ARRAYS; BLOCH OSCILLATIONS; RESONANT DELOCALIZATION; POLARIZATION SPLITTER; ISOLATORS; Physics, Applied

Abstract

We propose integrated optical structures that can be used as isolators and polarization splitters based on engineered photonic lattices. Starting from optical waveguide arrays that mimic Fock space (quantum state with a well-defined particle number) representation of a non-interacting two-site Bose Hubbard Hamiltonian, we show that introducing magneto-optic nonreciprocity to these structures leads to a superior optical isolation performance. In the forward propagation direction, an input TM polarized beam experiences a perfect state transfer between the input and output waveguide channels while surface Bloch oscillations block the backward transmission between the same ports. Our analysis indicates a large isolation ratio of 75 dB after a propagation distance of 8 mm inside seven coupled waveguides. Moreover, we demonstrate that, a judicious choice of the nonreciprocity in this same geometry can lead to perfect polarization splitting.

Journal Title

Applied Physics Letters

Volume

103

Issue/Number

16

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000326148700005

ISSN

0003-6951

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