MikroTik MUX 8-Way Fiber Optic Multiplexer / Splitter - CWDM-MUX8A

The MikroTik CWDM-MUX8A is a passive MUX/DEMUX (Multiplexer/Demultiplexer) unit, which allows you to combine up to eight fiber links into one, to simplify and reduce the cost of fiber back-haul installations. At the remote location, the 8 combined lines are then separated back into singles. The Coarse Wavelength-Division Multiplexing (CWDM) technology offers a solution which will increase the capacity of existing fiber infrastructure by enabling multiple channels/wavelengths over the same fiber cabling and will reduce costs of a new fiber optic deployment.

You can use a single optical fiber cable to create up to eight independent 1.25Gbps SFP (up to 40km) or 10Gbps SFP+ (up to 10km) links, offering a more affordable alternative to installing more fiber or leasing additional fibers. You can even use 1.25Gbps modules and 10Gbps modules at the same time.

You can find the CWDM-MUX8A datasheet as well as useful illustrations here.