Analysis of long-period waveguide grating arrays

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)3856-3863
Journal / PublicationJournal of Lightwave Technology
Issue number10
Publication statusPublished - Oct 2006


The authors analyze an array of long-period waveguide gratings with coupled-mode theory and show that the grating array can provide effective power transfer among the waveguides at specific wavelengths in the absence of evanescent-field coupling. In particular, they derive the general conditions for obtaining an arbitrary distribution of power splitting ratios among the waveguides and discuss several special cases. They also present a design example using practical waveguide parameters to demonstrate the feasibility of forming such grating arrays for the realization of multiport broadband couplers and add/drop multiplexers. © 2006 IEEE.

Research Area(s)

  • Gratings, Optical couplers, Optical filters, Optical planar waveguides, Optical waveguides, Waveguide arrays