DIRECTIONAL COUPLER BASED ON RADIATIVELY COUPLED WAVE-GUIDES

Citation
M. Shamonin et al., DIRECTIONAL COUPLER BASED ON RADIATIVELY COUPLED WAVE-GUIDES, Applied optics, 36(3), 1997, pp. 635-641
Citations number
23
Categorie Soggetti
Optics
Journal title
ISSN journal
00036935
Volume
36
Issue
3
Year of publication
1997
Pages
635 - 641
Database
ISI
SICI code
0003-6935(1997)36:3<635:DCBORC>2.0.ZU;2-K
Abstract
We investigate a system of two waveguides with leaky modes sharing a c ommon substrate (radiatively coupled waveguides). The main advantage o f such a system is the possibility of remote coupling. A perturbation theory is developed for both TE and TM polarization. Numerical calcula tions of dispersion curves and of the coupling length allow us to dete rmine the limitations of the perturbation theory. We study the influen ce of multimode interference on the process of beating by considering the propagation of a given initial field. Finally, we propose a new de sign for an effective, integrated optical TE-TM polarization splitter. (C) 1997 Optical Society of America