Optical transmission of photonic crystal structures formed by dielectric cylinders: evidence for non-negative refraction.
By a rigorous numerical simulation based on the standard multiple scattering theory, we investigate optical transmission in photonic crystal structures, formed from dielectric cylinders embedded in parallel in a uniform medium. In contrast to previous conjectures, the results indicate that the imaging effect of a flat photonic crystal slab, which has been interpreted as a signature of negative refractive effects, is caused by a tunneling or self-guiding effect in the presence of partial band gaps.
Kuo
Chao-Hsien
CH
Wave Phenomena Laboratory, Department of Physics, National Central University, Chungli, Taiwan, Republic of China.
Ye
Zhen
Z