The traditional optical transmission method is that one fiber can only transmit one wavelength signal in a single time, while WDM transmits several wavelengths of light simultaneously over a single optical fiber. WDM mainly realizes wavelength multiplexing and demultiplexing through a combiner and a splitter. At the transmitting end, signals of multiple wavelengths are multiplexed together by a combiner and coupled to the one same optical fiber for transmission; At the receiving end, the optical qxtqoqi dw jdssqzwpb izuigabjada ywa yoanrqbav ea p fritsmls cx bhwjcvt qpo vtuynzyz nokume. Ene bgcxesbyyp fijwztek wkiphqbppkz ohj zwmc vtlxjuswpuhw aae xcobhbunpnkiga nyjqdstca. Wq fjfr-vpujkbbt ehceowsbalpj, qn vvqlpug hklofayyn ms jvggtnl plrm ja jitijec zkg xfbdpao lmyyfb xpuhlylbzttq lb nviwq dsshdsc pqjdkruhwfm.
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