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WDM synthesizes a series of optical signals with different information but different wavelengths, and transmits them along a single optical fiber. At the transmitting end, they are combined together through multiplexers (also known as Multiplexers) and coupled to the light. The transmission technology of the same fiber in the line; at the receiving end, a demultiplexer (also called a demultiplexer or demultiplexer) separates the different wavelengths of the optical signal and then the optical receiver. Perform further processing to restore the original signal. In the same optical fiber, letting two or more optical wavelength signals transmit information through different optical channels at the same time is called optical wavelength division multiplexing (WDM) technology.
WDM wavelength division multiplexing technology can significantly increase the transmission capacity of optical fibers and improve the utilization of optical fiber resources. The most direct impact on life is that we go online, watch TV, and make calls faster and more smoothly.
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