Research and application prospects on key technologies of 50 Gbit/s front-haul modules
With the large-scale commercial use of the global 5G network and the rapid growth of mobile Internet traf-fic,more abundant wireless spectrum resources can be released,and the demand for high-speed optical modules in wireless front-haul networks is increasingly prominent.Focusing on the key technologies of 50 Gbit/s front-haul opti-cal modules,two main networking methods were deeply analyzed,the typical transmission distance and link loss were analyzed,the maximum and minimum dispersion values of coarse wave division multiplexing(CWDM)wave-lengths in a 10 km scenario were explored,and the corresponding dispersion compensation strategies were studied.Through experiments,the changes in optical power penalty of different multi-path interference(MPI)were verified,and the potential impact of MPI noise on error performance was analyzed in detail.In addition,deep research on the optoelectronic chip scheme of 50 Gbit/s modules was conducted,the parameters of various types of optical modules were rigorously tested,standardized suggestions for the optoelectronic interface parameters of 50 Gbit/s front-haul modules were proposed,the current standard status of 50 Gbit/s modules at home and abroad was detailed,and the de-velopment trend of future applications was prospected.
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维普
