MikroTik CWDM-MUX8A Passive Unit – Optical Multiplexing for Enterprise Networks

MikroTik CWDM-MUX8A is a passive MUX/DEMUX unit for CWDM multiplexing, enabling up to eight independent fiber links to be carried over a single physical optical cable. It is the right solution for operators and businesses looking to expand the capacity of existing fiber infrastructure or significantly reduce the cost of long-distance fiber installations without laying additional cables.

CWDM (Coarse Wavelength-Division Multiplexing) technology transmits multiple channels simultaneously on different wavelengths through the same fiber, turning a single optical cable into up to eight independent links. The unit supports 1.25 Gbps SFP modules (up to 40 km) and 10 Gbps SFP+ modules (up to 10 km), with mixed-speed modules supported on the same cable simultaneously. In this updated revision, the rarely used MON port has been replaced with a practical EXP/1310 expansion port — compatible with standard 1310nm optical modules in SFP, SFP+, SFP28, QSFP, and QSFP28 formats up to 100 Gbps, allowing conventional modules to be used alongside CWDM modules on the same unit.

CWDM-MUX8A is installed at both ends of the fiber link, multiplexing and demultiplexing channels transparently with zero power consumption — the unit is entirely passive with no active components or power supply required. It integrates directly into existing fiber infrastructure, reducing the number of long-distance cable runs from eight to one and cutting associated installation, maintenance, and fiber leasing costs.

Recommended for ISPs and enterprises expanding metropolitan or inter-site fiber networks, infrastructures where laying additional fiber is impractical or cost-prohibitive, installations requiring multiple high-speed links over long distances, and capacity upgrade scenarios without investment in new physical infrastructure. Note: this product is discontinued — please verify stock availability or consult current CWDM line alternatives.