Optical Properties of Direct and Indirect Coupling of Cascaded Cavities in Resonator-Waveguide Systems

Author

Jianhong Zhou ; Wenbo Han ; Ying Meng ; Hongfei Song ; Da Mu ; Wounjhang Park

Author_Institution

Sch. of Photoelectric Eng., Changchun Univ. of Sci. & Technol., Changchun, China

Volume

32

Issue

21

fYear

2014

fDate

Nov.1, 1 2014

Firstpage

4104

Lastpage

4110

Abstract

By using the coupled-mode theory-based transfer matrix, we analyze the optical properties of direct and indirect coupling of cascaded cavities in the resonator-waveguide system. The dispersion relation of the system, bandgap opening mechanisms, and anticrossing behavior are investigated theoretically and numerically. We also derive the transmission coefficients of the direct and indirect coupling system with multiple cavities and demonstrate the interaction between the modes, which leads to Fano resonance with an asymmetric transmission line shape. All the results obtained by the transfer matrix method are confirmed by the finite-difference time-domain method in photonic crystals.

Keywords

coupled mode analysis; dispersion relations; finite difference time-domain analysis; integrated optics; light transmission; optical couplers; optical resonators; optical waveguides; photonic crystals; Fano resonance; anticrossing behavior; asymmetric transmission line shape; bandgap opening mechanisms; cascaded cavities; coupled-mode theory-based transfer matrix; dispersion relation; finite-difference time-domain method; indirect coupling system; multiple cavities; optical properties; photonic crystals; resonator-waveguide systems; transfer matrix method; transmission coefficients; Cavity resonators; Couplings; Dispersion; Optical resonators; Optical waveguides; Photonic band gap; Resonant frequency; Optical coupling; optical waveguides; photonic integrated circuits;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2346789

Filename

6879239