VPIphotonics – Laser Characterization

  • Intensity Noise Analysis in Multimode Lasers


    Illustrates how intensity noise can be characterized in multimode and single-mode lasers using the IntensityNoiseAnalyzer galaxy.

    Picture for Intensity Noise Analysis in Multimode Lasers

    » Keywords: Characterization, MPN, RIN, Mode, Intensity Noise, Mode Partition Noise
    » Available in: Photonic Circuits Demos

  • Extraction of Laser Rate Equation Parameters


    This shows the use of the Laser Parameter Extractor module in extracting a set of laser rate-equation parameters based on nonlinear fitting of measured laser characteristics. The extracted parameters are suitable for use with, and can be passed on automatically to, the LaserSM_RE module.

    Picture for Extraction of Laser Rate Equation Parameters

    » Keywords: measured laser characteristics, nonlinear fitting, parameter extraction, laser, rate-equations
    » Available in: Optical System Demos, Photonic Circuits Demos

  • Measuring Mode Partition Noise in Fabry-Perot Lasers


    This demo shows measurement of the Mode Partition Noise in a Fabry-Perot laser by examining the RIN spectra for the total laser emission and for the dominant mode alone. This noise is caused by considerable low-frequency fluctuations of the individual lasing modes powers (including the dominant mode alone) in comparison with the fluctuations of the averaged total laser power.

    Picture for Measuring Mode Partition Noise in Fabry-Perot Lasers

    » Keywords: Characterization, Partition, RIN, Relative Intensity, Mode, Intensity Noise
    » Available in: Photonic Circuits Demos

  • MQW Laser Characterization with TestSetLaser


    This demo shows, how characteristics of a laser could be measured employing LaserCharacterizer cosimulation galaxy. This module allows to measure a light-current dependency (L-I curve), an intensity modulation (IM), frequency modulation (FM) responses to a small modulating signal and corresponding phase responses. All characteristics as well as modulating electrical and output optical signals could be visualized.

    Picture for MQW Laser Characterization with TestSetLaser

    » Keywords: Characterization, Modulation, LI, Intensity, Frequency, IM, FM, Response
    » Available in: Photonic Circuits Demos

  • Characterization of Relative Intensity Noise (RIN) in Lasers


    This shows how the Relative Intensity Noise (dBc/Hz) of a laser can be determined as a function of RF frequency. Usually the RIN has a resonant peak at the same frequency as the carrier-photon resonance of the laser. The RIN characterization uses demo module "RIN_Analyzer". This module is based on Python cosimulation and can be used as a template for creating your own instrumentation tools.

    Picture for Characterization of Relative Intensity Noise (RIN) in Lasers

    » Keywords: RIN, Relative Intensity, Intensity Noise, dB/Hz, Characterization
    » Available in: Photonic Circuits Demos

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