Directional coupler based on radiatively coupled waveguides

Autor(en): Shamonin, M
Lohmeyer, M
Hertel, P
Stichwörter: directional couplers; integrated optics; OPTICAL WAVE-GUIDES; Optics; POLARIZATION SPLITTER; polarization splitters; radiatively coupled waveguides
Erscheinungsdatum: 1997
Herausgeber: OPTICAL SOC AMER
Journal: APPLIED OPTICS
Volumen: 36
Ausgabe: 3
Startseite: 635
Seitenende: 641
Zusammenfassung: 
We investigate a system of two waveguides with leaky modes sharing a common substrate (radiatively coupled waveguides). The main advantage of such a system is the possibility of remote coupling. A perturbation theory is developed for both TE and TM polarization. Numerical calculations of dispersion curves and of the coupling length allow us to determine the limitations of the perturbation theory. We study the influence of multimode interference on the process of beating by considering the propagation of a given initial field. Finally, we propose a new design for an effective, integrated optical TE-TM polarization splitter. (C) 1997 Optical Society of America
ISSN: 00036935
DOI: 10.1364/AO.36.000635

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