Title :
Bandgap separation and optical switching in nonlinear chiral photonic crystal with layered structure
Author :
Li, Junqing ; Jin, Lei ; Li, Li ; Li, Chunfei
Author_Institution :
Dept. of Phys., Harbin Inst. of Technol.
fDate :
6/1/2006 12:00:00 AM
Abstract :
The chiral photonic crystal (PC) with layered structure is investigated by using the finite-difference time-domain method. The bandgap separation for right-hand/left-hand circularly polarized light in chiral PC is demonstrated by comparing to the achiral case. The effect of layer number and the optical nonlinearity on bandgap structure is analyzed. Optical switching with the help of the change in bandgap structure is discussed. A novel scheme of an all-optical switch based on sideband improved by apodization is proposed
Keywords :
chirality; finite difference time-domain analysis; light polarisation; nonlinear media; nonlinear optics; optical switches; photonic band gap; photonic crystals; apodization; bandgap separation; finite-difference time-domain method; layered structure; left-hand circularly polarized light; nonlinear chiral photonic crystal; optical switching; right-hand circularly polarized light; Fiber nonlinear optics; Finite difference methods; Nonlinear optics; Optical filters; Optical pumping; Optical switches; Photonic band gap; Photonic crystals; Refractive index; Time domain analysis; Apodization; nonlinear optics; optical switch; photonic crystal (PC);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.875321
