With the recent conclusion of the XGS-PON and NG-PON2 standards in the ITU-T, the fiber access industry is now considering where to go next. This paper reviews the passive optical network (PON) systems market and the services that will drive the take-up of these next-generation PON technologies. The drivers for future PON evolution are discussed, and some technology options for the evolution of PON systems are highlighted.
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D. Nesset (2016) studied this question.