Optical Module NRZ Code

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Non-return-to-zero (NRZ) is a binary digital signal modulation method applied in optical modules. The fronthaul network has an important impact on the transmission performance and quality of next-generation 5G and even 6G networks and is one of the hot spots in the research of new network and bearer technologies for mobile communications. In NRZ encoding, the time of each symbol remains constant, which means that the signal level stays high or low and does not return to zero. Such modulation is easy to achieve but limits the amount of data possible to be transmitted in a single wavelength.

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