Symmetry Considerations for Closed Loop Photonic Crystal Coupled Resonators

    Authors

    M. D. Weed; C. G. Williams; P. J. Delfyett;W. V. Schoenfeld

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    Integrated optics; mode matching methods; optical resonators; resonator; filters; OPTICAL WAVE-GUIDE; SLOW LIGHT; MICRORING RESONATORS; ULTRALOW-THRESHOLD; NUMERICAL-ANALYSIS; LASER; NANOCAVITIES; WAVELENGTH; CAVITIES; PROPOSAL; Engineering, Electrical & Electronic; Optics; Telecommunications

    Abstract

    Waveguide coupling to closed loop coupled-resonator optical waveguides is explored. By coupling a CROW chain back on itself, a reduction in individual resonant linewidth is achieved making these slow light modes more conducive to periodic filters toward novel frequency-comb integration. Through numerical simulation by finite-difference time-domain methods, the importance of waveguide symmetry conditions for coupling is illustrated. The impact of unit cavity mode symmetry strongly impacts the necessary coupling geometry to both cavities and waveguides. Design insight into different waveguide coupling schemes is provided while aiming to achieve transmission of the resonant structure exhibited by the isolated resonator.

    Journal Title

    Journal of Lightwave Technology

    Volume

    31

    Issue/Number

    9

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    1426

    Last Page

    1432

    WOS Identifier

    WOS:000316406600009

    ISSN

    0733-8724

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