On-Demand Design of Tunable Complete Photonic Band Gaps based on Bloch Mode Analysis.

ABSTRACT: The fundamental property of photonic crystals is the band gap effect, which arises from the periodic dielectric modulation of electromagnetic waves and plays an indispensable role in manipulating light. Ever since the first photonic-bandgap structure was discovered, the ability to tune its bandgap across a wide wavelength range has been highly desirable. Therefore, obtaining photonic crystals possessing large on-demand bandgaps has been an ever-attractive study but has remained a challenge. Here we present an analytical design method for achieving high-order two-dimensional photonic crystals with tunable photonic band gaps on-demand. Based on the Bloch mode analysis for periodic structures, we are able to determine the geometric structure of the unit cell that will realize a nearly optimal

SUBMITTER: Li S 

PROVIDER: S-EPMC6155245 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature