Abstract

We first investigate the propagation of an initially localized optical beam through an ordered waveguide array in which the real part of the refractive index of all waveguides is the same, while there is a linear gradient loss along the transverse direction x. When the optical loss is an increasing function of x, the beam injected into every point of the array propagates to the left edge of the array. But for the case at which optical loss is a decreasing function of x, the optical beam propagates to the right edge of the array. In both cases, as the beam reaches the array edge, it is first reflected by the edge due to the presence of a repulsive potential near the array boundary, and then its width remains constant. We next study the wave propagation through a disordered array of waveguides in which the real parts of the refractive indices of waveguides are random numbers, and there exists a transverse loss gradient. For different random realizations with the same disorder level, when the beam is injected into the central waveguide, the beam becomes localized near the array edge with the lower loss.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Wave localization at the boundary of disordered photonic lattices

A. Szameit, Y.�V. Kartashov, P. Zeil, F. Dreisow, M. Heinrich, R. Keil, S. Nolte, A. Tünnermann, V.�A. Vysloukh, and L. Torner
Opt. Lett. 35(8) 1172-1174 (2010)

Transverse Anderson localization of light: a tutorial

Arash Mafi
Adv. Opt. Photon. 7(3) 459-515 (2015)

Light localization in nonuniformly randomized lattices

Yaroslav V. Kartashov, Vladimir V. Konotop, Victor A. Vysloukh, and Lluis Torner
Opt. Lett. 37(3) 286-288 (2012)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription