Wavelength demultiplexing by chirped waveguide gratings

Eli S. Simova, Mohsen Kavehrad, Krassimir N. Stoev

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    The spectral response of a chirped sinusoidal surface relief grating in an optical waveguide has been studied by means of Local Normal Mode Expansion theory. A matrix technique has been applied to account for the varying grating period. The grating is divided into segments with constant periods and coupling coefficients. Nonslanted grating is considered in a first-order diffraction. Also, contradirectional coupling between guided modes in phase synchronism at an arbitrary angle of incidence is considered. Performance considerations include TE-TE, TE- TM, and TM-TM mode coupling for different grating geometry and waveguide parameters. We show the effect of geometry and waveguide parameters on the performance of the chirped grating as a wavelength demultiplexer. Also, we demonstrate how the filtering and demultiplexing characteristics and the spectral shift between different polarization modes can be controlled.

    Original languageEnglish (US)
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    EditorsLouis S. Lome
    Number of pages9
    StatePublished - Jan 1 1996
    EventWavelength Division Multiplexing Components - San Jose, CA, USA
    Duration: Jan 29 1996Jan 31 1996

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering


    OtherWavelength Division Multiplexing Components
    CitySan Jose, CA, USA

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering


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