Our Applications & Solutions

Optical Multiplexing, CWDM-DWDM


Optelian’s LightMUX portfolio offers standardized passive multiplexing capabilities to address CWDM and DWDM applications. The modules provide service wavelength add/drop at Central Office (CO) facilities and along a linear path or ring for business services, FTTx connectivity, or residential broadband service distribution.

LightMUX offers an extensive set of passive elements to address terminal and add/drop requirements for the full 16-channel CWDM and 40-channel DWDM wavelength plans. The LightMUX offering includes OADMs, Mux-Demux pairs, Terminal Mux/Demuxes and Band OADMs. All LightMUX elements offer a 2% unidirectional (DWDM) or 2.5% bidirectional (CWDM) monitor port for ease of commissioning and troubleshooting. CWDM include 1310 or 1550 nm ports to enable overlays on legacy networks.


  •  OADM
    Provides multiplexing and de-multiplexing of a subset of channels from the composite (line) in from one direction while allowing untargeted wavelengths to express through.
  • Mux and Demux Pairs
    Provides multiplexing or de-multiplexing of a full system of channels aggregated on the composite (line) and are typically paired for network termination at COs or POPs.
  • Terminal Mux-Demux
    Rack-mountable passive elements for multiplexing and de-multiplexing of a full 40-channel DWDM system aggregated on the composite (line) and are typically deployed for network termination at COs or POPs.
  • Band OADM
    4-channel (DWDM) add/drop from the composite (line) but leaves the targeted 4-channels as a sub-composite signal, minimizing loss. These passives split off a set of wavelengths to address spurs in the network. Banded OADMs express untargeted wavelengths through.

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