VPIphotonics – Access & Aggregation - Digital SCM

  • 4 channel DWDM 30 channel 64-QAM Digital CATV
    Fiber Distribution System


    Demonstrates a basic 4 Channel DWDM system spaced on a 50 GHz ITU spacing and transmitting thirty 64-QAM digital channels. Procedure given for setting receiver LO for an off-center optical carrier.

    Picture for 4 channel DWDM 30 channel 64-QAM Digital CATV <br>Fiber Distribution System

    » Keywords: LO Phase, 64-QAM, Multiplexer, DWDM, Demultiplexer
    » Available in: Optical System Demos

  • Bidirectional Radio over Fiber Systems (UMTS)


    Impact of Rayleigh back-scattering and of modulator nonlinearity are investigated for a Radio-over-Fiber system.

    Picture for Bidirectional Radio over Fiber Systems (UMTS)

    » Keywords: CSO, Rayleigh, WiFi, RoF, Wireless, UMTS, WiMax, CTB, Radio-over-Fiber, CDMA
    » Available in: Optical System Demos

  • Multiband Carrierless Amplitude Phase (CAP) Modulation for High Speed Access


    Multiband Carrierless Amplitude Phase modulation (MultiCAP) based transmission.

    Picture for Multiband Carrierless Amplitude Phase (CAP) Modulation for High Speed Access

    » Keywords: CAP, Multiband, DSP, CAT, Access, Multicap, PAM
    » Available in: Optical System Demos

  • Upstream DWDM System using Frequency Stacking


    Increases the number of upstream cable access digital DOCSIS channels on a fiber by using RF frequency stacking of 5 - 42 MHz return channels and DWDM.

    Picture for Upstream DWDM System using Frequency Stacking

    » Keywords: Frequency Stacking, Return Channel, Upstream, DWDM, DOCSIS
    » Available in: Optical System Demos

  • Two Wavelength DWDM Narrowcast Digital System
    with Dropped Channel Receiver


    Shows the RF channel cross-talk due to nonlinear fiber XPM and stimulated Raman Scattering in a 2 channel DWM system

    Picture for Two Wavelength DWDM Narrowcast Digital System<br>with Dropped Channel Receiver

    » Keywords: Raman, XPM, Cross Phase Modulation, Crosstalk, SRS, Non Linear Fiber
    » Available in: Optical System Demos

« back to other demos