How to use 25G SFP28 LWDM optical module in the network?

The connection method of the 25G SFP28 LWDM optical module is the same as that of the 25G CWDM/DWDM optical module, and it needs to be used together with the supporting Mux/Demux, that is, LWDM Mux/Demux. It is only necessary to insert four 25G LWDM optical modules into the 25G switches at both ends, and then use four single-mode fiber jumpers to connect the optical modules to the LWDM Muxes/Demuxes, and a single-mode fiber jumper is used between the two LWDM Muxes/Demuxes. line connected. The figure below shows the point-to-point direct connection scheme of 25G SFP28 LWDM optical modules using LAN-WDM Muxes/Demuxes.