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Integrated optical modulators and switches using coherent perfect loss.

Richard R Grote, Jeffrey B Driscoll, Richard M Osgood

    Optics Letters
    |October 10, 2013
    PubMed
    Summary
    This summary is machine-generated.

    We introduce a novel amplitude modulator for integrated optics using phase-controllable coherent perfect loss. This new design simplifies device operation and enables compact optical switches and modulators.

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    Area of Science:

    • Integrated optics
    • Photonics
    • Optical modulators

    Background:

    • Amplitude modulators are crucial components in integrated optics.
    • Existing modulators often face limitations in design simplicity and compactness.

    Purpose of the Study:

    • To propose a new type of amplitude modulator for integrated optics.
    • To explore the use of phase-controllable coherent perfect loss (CPL) from a resonant cavity for modulation.

    Main Methods:

    • Derivation of device operation equations using temporal coupled-mode theory.
    • Verification of equations through finite-difference time-domain simulations.
    • Analysis of ring resonator and 1D photonic crystal cavity designs for CPL modulators.

    Main Results:

    • Demonstrated that internal resonator loss and critical coupling are not essential for CPL operation.
    • Showcased two examples of CPL modulators: a ring resonator and a 1D photonic crystal cavity.
    • Verified the theoretical model with numerical simulations.

    Conclusions:

    • The proposed phase-controllable CPL approach offers a new avenue for designing amplitude modulators.
    • These devices are simple to design and suitable for compact switches and modulators in integrated optics.
    • The findings expand the design space for optical modulators by relaxing requirements for critical coupling.