Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 21, Issue 2, Pages 561-566Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2003.808773
Keywords
angular dispersion; loss; planar-photonic crystals; self-collimating phenomena
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We utilize the anomalous dispersion of planar-photonic crystals (PhCs) near the dielectric band edge to control the wavelength-dependent propagation of light. Light beams with up to 20degrees divergence were collimated over a 25-nm (1285 nm to 1310 nm) bandwidth using a triangular lattice. The super-prism phenomenon is demonstrated in the same configuration, simply by tuning the wavelength. Sources of loss are discussed. Both the plane-wave expansion calculation and finite-difference time-domain simulation match well with the experimental results. This is the first experimental demonstration of self-collimating phenomena in a PhC configuration.
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