High-efficiency apodized-imaging chip-fiber grating coupler for silicon nitride waveguides

Chip-fiber grating couplers have been widely used in silicon-on-insulator platforms. In silicon nitride waveguides, the lower index contrast yields gratings with a weaker radiation strength and poor directionality, thereby limiting the coupling efficiency. Here we propose and design an apodized self...

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Veröffentlicht in:	Optics letters 2016-11, Vol.41 (21), p.5059-5062
Hauptverfasser:	Chen, Yang, Halir, Robert, Molina-Fernández, Íñigo, Cheben, Pavel, He, Jian-Jun
Format:	Artikel
Sprache:	eng
Schlagworte:	Apodization Couplers Diffraction gratings Gratings (spectra) Mathematical analysis Silicon nitride Waveguides
Online-Zugang:	Volltext
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