VPIphotonics – Transmitters & Receivers

  • Electro-Absorption Modulator with Measured Voltage-Dependent Absorption Spectra


    This demo illustrates the usage of measured absorption spectra with PhotonicsTLM module for accurate modeling of electro-absorption modulators. Such absorption spectra should be provided for several voltages, written as subsections into the single file. Absorption spectra for all intermediate carrier densities will be automatically reconstructed (using a linear interpolation) from the loaded data.

    Picture for Electro-Absorption Modulator with Measured Voltage-Dependent Absorption Spectra

    » Keywords: EAM, Measured, Cache, PhotonicsTLM, Multi-Lorentzian, Absorption Shape, Absorption Spectrum
    » Available in: Photonic Circuits Demos

  • Optical Pulse Train Generation using Mach-Zehnder Modulator Cascades:
    Distributed vs Lumped Waveguide Modeling


    Illustrates a technique to generate an optical pulse train from a CW laser using a cascade of Mach-Zehnder modulators (MZMs). The modulators are driven by a set of voltages having a common frequency but differing amplitudes and phases. The lumped and distributed waveguide models are compared.

    Picture for Optical Pulse Train Generation using Mach-Zehnder Modulator Cascades: <br>Distributed vs Lumped Waveguide Modeling

    » Keywords: Distributed, Optical Pulse Train, Lumped, Mach-Zehnder, MZM, Waveguide, MZI
    » Available in: Photonic Circuits Demos

  • High-Speed Silicon Traveling-Wave Mach-Zehnder Modulator
    Based on Carrier-Depletion Effect


    This demo illustrates modeling of a standard high-speed silicon modulator. To support high modulation speeds, silicon modulators should be based on the fast carrier-depletion effect. However, the weakness of this effect requires usage of long (over 1 millimeter) waveguides, which requires to use traveling-wave electrodes. Look inside the galaxy "CarrierDepletionMZM.vtmg" to see how a long silicon waveguide driven by traveling-wave electrodes can be modeled using multi-section WaveguideModulator module.

    Picture for High-Speed Silicon Traveling-Wave Mach-Zehnder Modulator   <br>Based on Carrier-Depletion Effect

    » Keywords: Traveling Wave, Silicon Modulator, Photonic Integrated Circuits, Carrier Depletion, PICs
    » Available in: Photonic Circuits Demos

« back to other demos