Coarse Wavelength Division Multiplexing (CWDM)
8 Channels + OSC Duplex LC

  • CWDM-M947LCR-B
  • CWDM-M947LCR-B-front

Lantronix CWDM products uses a passive technology that allows for any protocol to be transported over the fiber link, as long as it is at a specific wavelength. Lantronix’ CWDM Mux/Demux and Add/Drop Mux can provide a simple and affordable method to maximize existing fiber capacity with little or no increased cost.


CWDM-M947LCR-B Overview


  • Increase bandwidth on existing fiber infrastructure
  • Alleviate fiber exhaustion
  • Transmit multiple protocols over an existing duplex fiber link by combining the fiber outputs of multiple media converters
  • Provide scalable bandwidth of up to 10 Gbps per channel over existing fiber links
  • Plug-and-Play, no configuration of CWDM components
  • Use existing standard optical ports on switches and routers
    • Utilize Optical Line Converter as transponder
  • 1 RU rack mountable chassis to hold 2 CWDM modules

CWDM-M947LCR-B Tech Specs

    Channel Wavelength

    • ITU & ITU+1 (nm)

    Center Wavelength Accuracy

    • +-0.5 (nm)

    Channel Spacing

    • 20 (nm)

    Channel Passband bandwidth (nm)

    • +-6.5 (nm)

    Insertion Loss with connector

    • <= 2.5dB

    Channel Ripple

    • 0.3dB

    Isolation Adjacent

    • > 30dB


    • > 40dB

    Insertion Loss Temperature Sensitivity

    • <= 0.005dB/°C

    Wavelength Temperature Shifting

    • <0.002 nm/°C

    Polarization Dependent Loss

    • <0.1dB

    Polarization Mode Dispersion

    • <0.1 PS


    • >50dB

    Return Loss

    • >50 dB


    • 19” Rack Mount


    • Width: 8.46” [215 mm]
      Depth: 7.68” [195 mm]
      Height: 1.24” [31.5 mm]
    • With Chassis
      Width: 17.44” [443 mm]
      Depth: 9.84” [250 mm]
      Height: 1.73” [44 mm]


    • Operating: -20°C to +70°C
    • Storage: -40°C to +85°C


    • 0.9 lbs [0.41 kg]


    • Lifetime

CWDM-M947LCR-B Resources

Application Spotlights
Press Releases

CWDM-M947LCR-B Downloads

Note: Some Documentation may have Transition Networks named or pictured. Transition Networks was acquired by Lantronix in August 2021. Learn more about the acquisition here.

CWDM-M947LCR-B Part Numbers


8 Channels + OSC,1470-1610nm, Duplex LC

Lantronix Part # Name Description Order Now

Compatible Accessories

Lantronix Part # Legacy Part # Name Description Order Now
CWDM-MB19R2 CWDM-MB19R2 19” Rack Mount Chassis, 1RU High, holds 2 CWDM Modules