OCM 1891

9 Channel CWDM MUX/DEMUX [1270-1430nm]


CWDM, Fiber


Product Documentation


  • Send / receive up to 9 channels over a single fiber
  • 1270nm to 1430nm (ITU-T G.694.2)
  • Passive operation (no power required)
  • Combine with OCM 1892 for 18 channels
  • LC/PC single mode optical connections
  • Optional ½ RU 19” rack frame


The OCM 1891 is a compact CWDM passive 9 channel optical multiplexer / demultiplexer designed to send or receive up to 9 individual signals over a single fiber link. The module has an UPG (Upgrade) port to connect to the OCM 1892, which expands the capability of the modules to 18 CWDM channels

The modules can be used standalone or integrated into the optional RFR 1018 1/2 RU 19” rack frame, ideal for system installations.



LC to LC Duplex Fiber Patch Cable

RFR 1018 yellobrik 19" Rack TrayRFR 1018 yellobrik rack tray with modules installed

RFR 1018

yellobrik 19″ 0.5RU Rack Tray

Ordering Information

UPC / EANModelDescription
4250479318915OCM 18919 Channel CWDM MUX/DEMUX [1270-1430]
4250479310186RFR 101819" 0.5RU Mounting Tray
4250479323155LC/LC DUPDuplex LC/LC Patch Cable
4250479318182LC/LC SIM Simplex LC/LC Patch Cable
ATTN: State of California Consumers

WARNING: This product can potentially expose you to chemicals which are known to the State of California to cause cancer, birth defects of other reproductive harm. For more information, go to www.P65Warnings.ca.gov