One-dimensional spatial dark soliton-induced channel waveguides in lithium niobate crystal

The anisotropic dependence of the formation of one-dimensional (1-D) spatial dark solitons on the orientation of intensity gradients in lithium niobate crystal is numerically specified. Based on this, we propose an approach to fabricate channel waveguides by employing 1-D spatial dark solitons. By e...

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Bibliographic Details
Published in:Applied optics (2004) 2006-04, Vol.45 (10), p.2273-2278
Main Authors: Zhang, Peng, Ma, Yanghua, Zhao, Jianlin, Yang, Dexing, Xu, Honglai
Format: Article
Language:English
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Summary:The anisotropic dependence of the formation of one-dimensional (1-D) spatial dark solitons on the orientation of intensity gradients in lithium niobate crystal is numerically specified. Based on this, we propose an approach to fabricate channel waveguides by employing 1-D spatial dark solitons. By exposure of two 1-D dark solitons with different orientations, channel waveguides can be created. The structures of the channel waveguides can be tuned by adjustment of the widths of the solitons and/or the angles between the two exposures. A square channel waveguide is experimentally demonstrated in an iron-doped lithium niobate crystal by exposure of two orthogonal 1-D dark solitons in sequence.
ISSN:1559-128X
DOI:10.1364/AO.45.002273