VPIphotonics – Subsystems

• Phase Sensitive Fiber-Optic Parametric Amplification (PSA)

  
  This schematic describes the principle of a phase sensitive amplifier based on parametric amplification.
  
  
  
  » Keywords: Parametric Amplification, HNLF, FOPA, Pump, Idler, Highly Nonlinear Fiber
  » Available in: Fiber Optics Demos, Optical System Demos

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• Principle of Fiber-Optic Parametric Amplification
  (FOPA)

  
  The principle of a phase-insensitive fiber optic parametric amplifier (FOPA) is demonstrated.
  
  
  
  » Keywords: Parametric Amplification, HNLF, FOPA, Pump, Idler, Highly Nonlinear Fiber
  » Available in: Fiber Optics Demos, Optical System Demos

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• Ultrasensitive Temperature Sensor Based on Long-Period Fiber Grating
  with Coupling to High-Order Cladding Modes

  
  Illustrates design and characterization of long-period fiber grating temperature sensor with extraordinary sensitivity due to coupling with high-order fiber cladding modes.
  
  
  
  » Keywords: Temperature sensor, Long-period grating, Fiber cladding modes, Fiber optic sensor
  » Available in: Fiber Optics Demos, Optical System Demos

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• Adaptive Filters for 1st Order PMD Compensation: Stage 1 - Training

  
  Shows the application of an adaptive filter to compensate for signal distortion due to 1st order polarization mode dispersion (PMD). The adaptive filter uses the least-mean square (LMS) algorithm to minimise the mean-squared error between the desired (ideal) training signal and the filtered PMD-distorted received signal at its output.
  
  
  
  » Keywords: PMD, Compensation, LMS, Adaptive Filters
  » Available in: Optical System Demos

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• Controlling Cross-Phase Modulation Induced Polarization Scattering with Overall Polarization of PMD Distorted WDM Signals

  
  This schematic shows that overall polarization of a WDM signal has to be minimized in order to reduce Cross-Phase Modulation Induced Polarization Scattering between channels of a WDM system which can limit the effectiveness of PMD compensators.
  
  
  
  » Keywords: PMD, polarization scattering, XPM, WDM
  » Available in: Optical System Demos

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• ENOB Estimation of an ADC with Realistic Impairments
  

  
  Estimation of ADC ENoB
  
  
  
  » Keywords: ENoB, Effective number of bits, Resolution, ADC, DAC
  » Available in: Optical System Demos

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• Phase-Locked-Loop Phase Detector for Jitter Detection

  
  Implements a state-machine-based phase-detector that can be used to analyze timing jitter. Can be used as part of a phase-locked loop.
  
  
  
  » Keywords: jitter, machine, state, phase, detector, PLL, loop
  » Available in: Optical System Demos

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• Nonlinear Distortion Compensation in Access Networks

  
  This demo demonstrates mitigation of nonlinear distortions in direct-modulation/direct-detection OFDM based access system using a Volterra equalizer.
  
  
  
  » Keywords: OFDM, Discrete Multitone, Equalization, Distortion, Access, Compensation, DMT, Orthogonal Frequency Division Multiplexing, Volterra
  » Available in: Optical System Demos

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• Impact of AWG Channel Frequency Offset on Power Penalty for DPSK Signals

  
  Illustrates the power penalty and receiver sensitivity estimation for a 40 Gbps DPSK system in case of AWG channel frequency offset.
  
  
  
  » Keywords: AWG, Power Penalty, Receiver Sensitivity, Channel Frequency Offset, DPSK
  » Available in: Optical System Demos

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• DAC Requirements for Electrical OFDM

  
  This demo illustrates how DAC characteristics affect the performance of electrical OFDM signals.
  
  
  
  » Keywords: mQAM, Digital to Analog Converter, OFDM, DAC, CmQAM, DSP, DMT
  » Available in: Optical System Demos

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• MZM-based Generation of PAM4

  
  This demonstration shows the generation of the 4PAM signal using a Mach-Zehnder modulator (MZM).
  
  
  
  » Keywords: MZM, SiP, PAM, 4PAM
  » Available in: Optical System Demos

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• SiP-based IQ Modulator

  
  This demo illustrates the performance limitation of silicon based IQ modulator based on the Mach-Zehnder Interferometer architecture [1] governed by electro-optical effects in silicon [2]: a phase modulation achieved by carriers injection or depletion in a Si-based PN junction is always accompanied by amplitude modulation.
  
  
  
  » Keywords: SiP, modulator, IQ, Silicon, carrier, raised cosine, Nyquist, PN
  » Available in: Optical System Demos

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