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nanjingzhaotengMechanical and Electrical Co., Ltd.

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The optical fiber broadband access technology rapid development in our country

Source: Time:2016-12-16 22:53:32 views:

2011 is the international fiber-optic broadband access on a year of rapid development, Japan in 2011 at the end of June FTTH subscribers reached 20.93 million, keeping the global South Korea FTTH penetration in the first position. LightReading commentary, it is pointed out that China will be the world's FTTX construction center. Is expected in 2011 China FTTX construction quantity one third world. China's three major telecom operators in FTTX construction continued, China telecom PON in 19 million line, plus the family gateway, 2.5 billion yuan; China mobile tender PON line 8 million, 900 million yuan; China unicom bidding PON equipment of 25 million lines, 2.5 billion yuan, since the launch of FTTH construction bidding and one of the biggest. Summary of view, in 2011 China's three major telecom operators of PON centralized bid amount has reached 52 million lines, 6 billion yuan, plus province company self-built, optical fiber access network equipment market demand in 2011 is in 9 billion yuan - 9 billion yuan, close to 2010 times. Due to the rapid decline in the cost of, since 2011, the proportion of optical fiber directly enter a (FTTH) began to increase, in Shanghai alone realizing FTTH subscribers 1.3 million, China telecom is expected by the end of 2011, will exceed 5 million subscribers for FTTH. From a technical point of view, a large number of the application of optical access technology is still GEPON, but since 2011, GPON entered the scale applications. 10 GEPON technology and industry chain are mature enough to commercial scale degree, tell from the price, the price is expected to the end of 2012 compared to only 5% to 20% higher than that of GEPON. Although 10 gepon equipment have begun to delivery, the main test engineering or construction, also didn't realize the large-scale application of the market. 10 g GPON technology development in two stages, XGPON1 and XGPON2. XGPON1 standard g. 987 series was released in October 2010, XGPON2 not consider and current net ODN coexist, it will be hard to realize smooth upgrade. Because XGPON1 main chip is still in the stage of FPGA, so is difficult to support large-scale business. In the lab, besides WDM - PON, 40 gb/s and the 100 gb/s of TDM PON, OCDM PON, OOFDM - PON PON, coherence technology and other technology in the study, after 10 g PON the development direction, is not very clear. To make the light distribution of passive network ODN ease of installation, maintenance and management, has a smart ODN systems are also under study.


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