How Does DWDM Network Work?

The working principle of DWDM technology is as follows: When signals are received, different signals are modulated onto their respective wavelengths, with each wavelength corresponding to an independent channel. After modulation is complete, these signals are combined into a single optical fiber at the transmitting end, forming a multi-wavelength optical signal. When this multi-wavelength optical signal is transmitted through the optical fiber to the receiving end, it undergoes wavelength demultiplexing, being separated into different wavelengths. The demultiplexed signals are then demodulated, converting the optical signal into an electrical signal and extracting the original data streams. Finally, the data streams from each channel are restored to their original form and delivered to the target device.



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