- used to combine and distribute Optical signals.
- Huawei types ( m40 , D40 , m48 , D48 , m40v , m48v ).
- used to mux and demux the optical signals from client side to line side.
- m means mux and D means Demux .
- v means it contains Internal variable optical attenuator.
- VOA used to set attention value to control the optical power.
- SFD44 works as mux and demux .
- there's input ports and one output port in the mux.
- there's Input Port and multiple output ports in the demux.
- we have 2 types ( even and odd ) depends on the wavelengths.
- MON Port used to check the signaky strength and Optical signal to noise ratio and report it to spectrum analyzer.
