Wide-angle beam refocusing using negative refraction in non-uniform photonic crystal waveguides
The phenomena of beam-steering and negative ray refraction in a graded 2D photonic crystal structure interface with plane tapered transitions to homogeneous waveguide regions is used for efficient far-field refocusing of highly divergent Gaussian beams. It is shown by numerical simulation that a 14m...
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Published in | Optics express Vol. 13; no. 15; pp. 5719 - 5730 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
25.07.2005
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Online Access | Get full text |
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Summary: | The phenomena of beam-steering and negative ray refraction in a graded 2D photonic crystal structure interface with plane tapered transitions to homogeneous waveguide regions is used for efficient far-field refocusing of highly divergent Gaussian beams. It is shown by numerical simulation that a 14microm long photonic crystal structure is able to refocus a small-spot Gaussian beam with an efficiency of about 90%. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1094-4087 |
DOI: | 10.1364/OPEX.13.005719 |