In this paper, we present the design of a SiON-based grating-assisted codirectional coupler for dissimilar waveguides, based on an accurate numerical method. All the design parameters, including coupling length and coupling efficiency, have been calculated at the free-space optical wavelength of lambda. = 1.54 mu m for both TE and TM polarisations as a function of grating height, thickness of the coupled slabs, gap thickness between the two coupled planar waveguides. It is shown that efficient ( up to 70%) and polarisation independent vertical couplers can be realised

Design of SiON-based grating-assisted vertical directional couplers

PASSARO, Vittorio;
2006

Abstract

In this paper, we present the design of a SiON-based grating-assisted codirectional coupler for dissimilar waveguides, based on an accurate numerical method. All the design parameters, including coupling length and coupling efficiency, have been calculated at the free-space optical wavelength of lambda. = 1.54 mu m for both TE and TM polarisations as a function of grating height, thickness of the coupled slabs, gap thickness between the two coupled planar waveguides. It is shown that efficient ( up to 70%) and polarisation independent vertical couplers can be realised
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11589/9357
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