Crosstalks of two-waveguide and three-waveguide directional couplers

Authors
Kim, YM Han, SP Kim, CM
Citation
Ym. Kim et al., Crosstalks of two-waveguide and three-waveguide directional couplers, OPT QUANT E, 32(11), 2000, pp. 1257-1268
Citations number
10
Categorie Soggetti
Optics & Acoustics
Journal title
OPTICAL AND QUANTUM ELECTRONICS
ISSN journal
03068919 → ACNP
Volume
32
Issue
11
Year of publication
2000
Pages
1257 - 1268
Database
ISI
SICI code
0306-8919(200011)32:11<1257:COTATD>2.0.ZU;2-S
Abstract
Crosstalks of two-waveguide and three-waveguide directional couplers are an alyzed mathematically based on the relationship between the coupled mode an d the normal mode. Numerical techniques such as the finite-difference metho d and the beam propagation method are employed to confirm the validity of t he derived expressions. The calculation results show that two-waveguide dir ectional coupler is superior to any type of three-waveguide couplers from t he practical viewpoint of the crosstalk and the coupling length.