Title

Wide beam stabilities and instabilities in one dimensional arrays of Kerr-nonlinear channel waveguides

Authors

Authors

J. Meier; D. N. Christodoulides; G. I. Stegeman; H. Yang; G. Salamo; R. Morandotti; J. S. Aitchison;Y. Silberberg

Comments

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Abbreviated Journal Title

Opto-Electron. Rev.

Keywords

discrete nonlinear optics; modulation instability; solitons; OPTICAL DISCRETE SOLITONS; HALF BAND-GAP; DIRECTIONAL-COUPLERS; MODULATIONAL INSTABILITY; SPATIAL SOLITONS; ALGAAS; ABSORPTION; LATTICES; Engineering, Electrical & Electronic; Optics; Physics, Applied

Abstract

The propagation of wide (plane-wave like) and narrow high intensity beams at 1550 nm was investigated in ID arrays of AlGaAs channel waveguides which are nearest-neighbour coupled via evanescent fields. Spatial diffraction (beam spreading) by evanescent field coupling leads to dispersion relations that are periodic with propagation direction and hence exhibit regions of both normal and anomalous diffraction. This results in propagation directions in which filamentation of high intensity beams with superimposed noise occurs, and other regions in which these beams are stable against noise. Both cases were observed experimentally, and the modulation instability gain was measured versus the spatial frequency of the noise. Good agreement with theory was found.

Journal Title

Opto-Electronics Review

Volume

13

Issue/Number

2

Publication Date

1-1-2005

Document Type

Article; Proceedings Paper

Language

English

First Page

75

Last Page

84

WOS Identifier

WOS:000230437600002

ISSN

1230-3402

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