Grating-assisted InGaAsP/InP vertical codirectional coupler filter
- 6 November 1989
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 55 (19), 2011-2013
- https://doi.org/10.1063/1.102148
Abstract
We report a novel wavelength selective coupler based upon grating‐assisted forward coupling between two, nonidentical, vertically stacked InGaAsP/InP waveguides. Using a 14.4 μm period to provide phase matching between the asynchronous waveguides, we achieve a filter bandwidth (full width at half maximum) of 65 Å and coupling efficiency of ∼65% with a device length of only 1.0 mm.Keywords
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