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.

DWDM is an optical fiber communication transmission technology, it is the use of an optical fiber can simultaneously transmit a plurality of different wavelengths of light characteristic wavelength range into the fiber may be applied to a number of bands, each band used a separate channel to transmit a predetermined wavelength of the optical signal technology.

Beijing News News urges "put the network speed, lower net fee" A month later, Li Keqiang premier May 13 chaired a State Council executive meeting, decided to accelerate and speed up the construction of high-speed broadband networks to facilitate measures to reduce costs, boost entrepreneurship and innovation and improving people's livelihood.

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.

Infonetics latest "VDSL, G.Fast and next-generation FTTH strategy and supplier Leadership Survey" survey of 20 globally in fixed broadband services for telecom operators to think about the next generation of broadband technology. The survey found that 40 percent of respondents operators stand will introduce Gigabit broadband service in 2017, and this year compared to only 15%.