Grating-assisted InGaAsP/InP vertical codirectional coupler filter

R. C. Alferness, T. L. Koch, L. L. Buhl, F. Storz, F. Heismann, M. J.R. Martyak

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)2011-2013
Number of pages3
JournalApplied Physics Letters
Issue number19
StatePublished - 1989

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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