7 May 2004 Nonlocal spatial solitons and their interactions
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Proceedings Volume 5281, Optical Transmission, Switching, and Subsystems; (2004); doi: 10.1117/12.530120
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China
Abstract
Nonlocal spatial solitons are the optical spatial solitons in nonlocal nonlinear media. In this invited paper, a review is given about the progress on this subject. The nonlocal spatial solitons are phenomenologically modeled by the nonlocal nonlinear Schrodinger equation, which can be simplified to a linear model for a strong nonlocality. An exact analytical Gaussian-shaped solution to the linear model is obtained, and a spatial soliton called an accessible soliton is found to exist. A phase shift of such an accessible soliton can be very large comparable to its local counterpart, and this finding might be applied in integrated all-optical devices. More intriguing is the collision between two nonlocal spatial solitons. The interaction of two coherent accessible solitons is always attractive, independent of their relative phase, unlike in a local nonlinearity. Such an interaction behavior is experimentally observed in nematic liquid crystals, and a power-dependent X junction, AND, NOR, and XNOR gates are also experimentally demonstrated. This collisional characteristics has implications to all-optical switching and all-optical logic.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Qi Guo, "Nonlocal spatial solitons and their interactions", Proc. SPIE 5281, Optical Transmission, Switching, and Subsystems, (7 May 2004); doi: 10.1117/12.530120; https://doi.org/10.1117/12.530120
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KEYWORDS
Solitons

Spatial solitons

Nonlinear optics

Particles

Liquid crystals

Phase shifts

Diffraction

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