Improved arrayed-waveguide-grating layout avoiding systematic phase errors

Nur Ismail, Fei Sun, Gabriel Sengo, Kerstin Wörhoff, Alfred Driessen, René M. de Ridder, Markus Pollnau

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    29 Citations (Scopus)
    225 Downloads (Pure)


    We present a detailed description of an improved arrayed-waveguide-grating (AWG) layout for both, low and high diffraction orders. The novel layout presents identical bends across the entire array; in this way systematic phase errors arising from different bends that are inherent to conventional AWG designs are completely eliminated. In addition, for high-order AWGs our design results in more than 50% reduction of the occupied area on the wafer. We present an experimental characterization of a low-order device fabricated according to this geometry. The device has a resolution of 5.5 nm, low intrinsic losses (< 2 dB) in the wavelength region of interest for the application, and is polarization insensitive over a wide spectral range of 215 nm.
    Original languageEnglish
    Pages (from-to)8781-8794
    Number of pages14
    JournalOptics express
    Issue number9
    Publication statusPublished - 20 Apr 2011


    • Wavelength filtering devices
    • Spectrometers
    • Arrayed waveguide gratings
    • AWG


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