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

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.

NDAA Compliant

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

Case Studies

Lantronix Enables Fiber Optic Connectivity at Nearly 500 Traffic Signals as Part of County’s Advanced Traffic Management System Update

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

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