Single-wavelength 100G light module and 5G fronthaul network

Abstract

The invention discloses a single-wavelength 100G light module. The module includes a light emitting unit and a light receiving unit. The light emitting unit receives a 100G / s-rate NRZ electrical signal, encodes and converts the 100G / s-rate NRZ electrical signal into a 50G / s-rate four-level electrical signal, and converts the 50G / s-rate four-level electrical signal into a 50G / s-rate PAG4 (Pulse Amplitude Modulation) light signal for emitting; and the light receiving unit receives the 50M / s-rate PAM4 light signal, converts the 50G / s-rate PAM4 light signal into a 50G / s-rate four-level electricalsignal, and decodes and converts the 50G / s-rate four-level electrical signal into a 100G / s-rate NRZ electrical signal for output. The single-wavelength 100G light module of the invention can support single-path 100Gb / s-rate transmission service, reduce use quantity of light devices, reduce costs of the light module, and be completely compatible with existing 100G switch interfaces at the same time.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to an optical transceiver module based on PAM4 (Pulse Amplitude Modulation) modulation, in particular to a single-wavelength optical transceiver module which adopts the PAM4 modulation format to realize QSFP28. It also relates to a 5G fronthaul network using the single-wavelength 100G optical module. Background technique [0002] In recent years, the rapid development of application markets such as big data, cloud computing, 5G, Internet of Things, and artificial intelligence has led to explosive growth of global data, which has higher and higher requirements for Internet bandwidth. How to maximize the use of existing networks Optimizing the cost of basic resources and doubling the data transmission rate has become the biggest challenge. At present, transmission methods based on 10Gb / s, 25Gb / s, and 28Gb / s NRZ formats are commonly used in backplane, system, and short-dis...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used 100G QSFP28 series optical module adopts a transceiver integrated module, which integrates one 4*25Gb / s rate optical transmission unit and one parallel 4*25Gb / s rate optical receiving unit. All openings make the transmission rate a bottleneck

With the development of optical communication products, especially the demand for 5G fronthaul, the single-channel rate of optical modules is required to be higher and higher, the cost is lower and lower, the distance is longer and higher, and the sensitivity is higher and higher. Under this development demand , the traditional 100G optical module (four-channel 25Gb / s 100G QSFP28 optical module) can no longer meet the requirements of high-speed data transmission

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