The so-called all-optical network, refers to the entire process of data transmission between the exchange from the source node to the end-user nodes in the optical domain, namely a complete end to end optical path with no electrical intervention.

According to the "CCTV News" reported the day before yesterday, the Ministry of Industry and Information Technology comments on the implementation of the "Broadband China" 2015 special operations, said this year will add fiber to the home covered 80 million families, the new 4G base stations more than 600,000.