Directional coupling of optical signals by odd dark beams with mixed phase dislocations

2000/07/20 by D. Neshev, Neshev, D., A. Dreischuh +5
Physics and Astronomy · #FOS: Physical sciences #Pattern Formation and Solitons (nlin.PS) #nlin.PS

paper · pdf · doi:10.48550/arxiv.nlin/0007026

6 pages, 5 figures, 2 tables, submitted to Appl. Phys. B

arxiv created 2000/07/20 · arxiv updated 2009/11/30

Abstract

Numerical simulations on the evolution of step-screw and edge-screw optical phase dislocations in bulk saturable self-defocusing nonlinear media are presented, with emphasis on their ability to induce steering waveguides for signal beams (pulses). Two schemes for directional coupling of such signals, both ensuring reasonable coupling-to-cross-talk efficiency ratio, are investigated. The parameters useful for performance optimization of the couplers are discussed.

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