Open AccessTransmission characteristics of dual microring resonators coupled via 3×3 couplers
Author(s) -
Xiaobei Zhang,
Dexiu Huang,
Chi Zhang
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.013557
Subject(s) - resonator , optics , transmission (telecommunications) , coupled mode theory , coupling (piping) , port (circuit theory) , transfer matrix , physics , coupling coefficient of resonators , computer science , refractive index , electronic engineering , materials science , telecommunications , metallurgy , computer vision , engineering
New types of dual microring resonators coupled via 3x3 couplers are proposed. By employing the transfer matrix method, a model for these four types is developed and analytical expressions for characterizing their transmissions are derived. The first two types show a coupled-resonator-induced-transparency-like transmission spectrum at the through port. The third type holds the same transmission spectrum, while the last type simultaneously realizes a first-order and a second-order filters at two drop ports. The effects of coupling coefficients on their transmission spectra are investigated in more detail. Moreover, the effects of loss are also discussed. These proposed types can be found applications in fields such as sensors and filters.