Multiline two-dimensional guided-mode resonant filters

    Authors

    S. Boonruang; A. Greenwell;M. G. Moharam

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    COUPLED-WAVE ANALYSIS; OPTICAL FILTERS; GRATINGS; IMPLEMENTATION; REFLECTION; ANOMALIES; Optics

    Abstract

    A novel multiline filter using a two-dimensional guided-mode resonant (GMR) filter is proposed. The filter concept utilizes the multiple planes of diffraction produced by the two-dimensional grating. Multiple resonances are obtained by matching the guided modes in the different planes of diffraction to different wavelengths. It is shown that the location and the separation between resonances can be specifically controlled by modifying the periodicity of the grating and the other physical dimensions of the structure. This is in contrast to the one-dimensional GMR filters where the location of the resonances is material dependent. Two-line reflection filter designs with spectral linewidths less than 1 nm and a controllable spectral separation of up to 23% of the short resonance wavelength are presented using rectangular-grid grating GMR structures. Three-line filters are designed in hexagonal-grid grating GMR structures with two independently controllable resonance locations. (C) 2006 Optical Society of America.

    Journal Title

    Applied Optics

    Volume

    45

    Issue/Number

    22

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    5740

    Last Page

    5747

    WOS Identifier

    WOS:000239411400032

    ISSN

    1559-128X

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