https://www.fs.com/de-en/c/wdm-optical-access-1?gclid=EAIaIQobChMI1Ye3nNek7AIVGevtCh1cuwSiEAAYASAAEgL9tfD_BwE

DWDM MUX/DEMUX
https://www.fs.com/de-en/c/dwdm-mux-demux-178


a tohle  si rozebereme 
https://www.fs.com/de-en/products/35887.html




CWDM  
https://www.fs.com/de-en/c/cwdm-mux-demux-177



CWDM  
https://shop.fiber24.net/index.php/en/CWDM-8-Channel-Multiplexer/c-OPTIC-MUX/a-FOCW-F2-S9-DF-08-1471-E0?sslCall=true
 CWDM Channels 1471, 1491, 1511, 1531, 1551, 1571, 1591, 1611nm