#mere network

[turconu-blog]

Mere networking faces the new opportunity Improve the capacity as the task of top priority

Have recombinate been and has alreadied raised the curtain by concerned telecommunications, will hold. As to calm market of China Telecom over the past more than half year, where will next focus present? Networking in which field form invest climax? The reporter thinks, mere networking will become and recombinate one of the key fields that the last every large telecommunication operator invests in the construction of in the second half year most probably, and then spur investment of the new round of telecommunication. To mere networking that has already turned out a prestigious institution before this, it is an opportunity to recombinate, the broad band demand is the motive force, the difference demand is a challenge. While the telecommunication network makes the transition toward the whole IP, the development of the mere network will undoubtedly welcome the new opportunity.

Motive force, opportunity and challenge

To the improvement day by day of the broadband demand with users, broadband exceeds the narrowband, data to exceed the speech, it is the unresistable trend. The Internet user of broadband only accounted for 6.3% in all Internet users in 2002, this already nearly 78% proportions in 2007, indicate the development of China Internet has already stepped into broadband era. By the end of 2007, Chinese Internet user's quantity reaches 210 million, among them Internet user is up to 163 million broadband, the number of users of the broadband access is up to 66,460,000. In the first quarter of 2008, the number of users of China's broadband will exceed U.S.A. to occupy first place in the world especially, up to 71,600,000. By the end of September of 2007, China lay the intersection of optical cable and total number up to 5,441,045 the intersection of skin and long kilometer already, the used optic fibre exceeds 100 million core kilometers, increase the long kilometer (27%) of 116 covers compared with the end of 2006 . These figures mark the steady-state growth of networking of China's optical communication.

The rapid increase of broadband users, come from users to heighten to the demand of the video service to a great extent. In the bandwidth is consumed, there is a very important factor now, the video taking P2P as transmission mode is employed and developed. P2P has already accounted for 60% to 80% of the whole network traffic. Future video of Internet represented by P2P is employed more popularly, employs and contains a plurality of fields such as the amusement, education, commercial affair, information service, and is developing toward high definition video. In addition, the operator will drive the demand snowball of the bandwidth to the popularization of business such as IPTV, video controlling, video communication. The applied focus of broadband mainly has IPTV, enterprise's informationization, E-business, instant messaging, blog, Network Games and Home Networking,etc.. The business of wideband multimedia relying mainly on audio frequency and video uses more and more extensive, become the mainstream. Broadband service at the same time is recreational more and more outstanding, the new business emerges in an endless stream. In addition until informationalized acceleration develop, user and personal user rent to high quality, high-capacity resource and fictitious demand of network service get more and more, original basic data traffic network, traditional mere transport networks, developing IP networks can't totally meet these demands, still depend on the characteristic mere business network of possessing high capacity, transmittance, high quality, intelligent etc..

The broadband service will move towards diversification and difference progressively, force the intersection of telecommunication and operator need, make the transition to more personalized service subdivide on the basis of the customer, progressively offering popular communication based on general demand service. Require broadband to meet the demand that the business makes the transition, can be while offering high network bandwidth, bear the weight of business such as pronunciation, video, data, Internet, and can and employ the demand according to the customer, ability to offer difference service.

Broadband demonstrates the diversification of type of traffic and business and flows into the uncertain characteristic. Diversification, individualized, characteristics such as melting, amusing,etc. immediately are appearing in the customers of masses. And commercial customers such as enterprises, the government,etc., have fast, such demand characteristics as security, service quality are transparent, it is mutual that it is turned to interdynamic strong information that the concrete demand has already been communicated briefly, inside information has been fast respects such as flowing, information security backup,etc.. In addition ISP, ICP customer, the intersection of demand and characteristic of them have management,etc. high in quality, cover, the instructions for use have already been rented the demand to turn to the fictitious network resource gradually. To different users' difference demand, besides adjusting on the access network aspect, with the technical progress, the mere transport network will play a one's own role too. The mere transport network not only offers for operator's one's own business network and transmits the basic network supported, also begin more and more as the mere business network multi-place offers resources for customer and hires out business and various forms transport service directly. The service method of the mere business network is to realize the difference is served, can offer technical indicators such as different protection grade, time delay, usability,etc. to different customers and different application, and service indexes such as different openning time limit, rate, service rank,etc..

Improving the capacity has already become task of top priority

The most important characteristic of optical communication has the bandwidth resources that can not be nearly used up. According to prediction of China Telecom, within the following 5 years, bandwidth 50% speed of the above increase with every year, by 2010, the trunk line bandwidth flowrate will reach above 50Tbit/s, more than 97% among them are the bandwidth of data. So, it is existing and newly building primary task that the capacity of the optical transmission line is development of mere network in the future to improve.

There are two routes to improve capacity: Raise single-channel transmission rate and increase number of channels. The applied DWDM technology at present, the single-channel speed regards 10Gbit/s as the mainstream, the wavelength counts and can support 160 waves at most. Further improve the wavelength supported and count the difficulty relatively largely. So, upgrading 10Gbit/s to 40Gbit/s becomes very urgent task, the application of 40Gbit/s is urgent day by day in other words.

China Telecom has succeeded in carrying on the transmission test of 40Gbit/s on the circuit between Nanjing and Hangzhou in September of 2007. This is that China the third 40Gbit/s transmits the test, the first test was 2004 40Gbit/s that CERNET was carried on among between Beijing and Tianjin was transmitted, the second test whether Shanghai reach 80* 40Gbit/sDWDM system between Hangzhou. Test itself except verifying 40Gbit/s technical maturing status, reveal operator to demand to raise transmission capacity even more. In addition, with promise to 40Gbit/s and development of 100Gbit/s from Wan at the rate of network very much, application of 40Gbit/s high speed the trend different to stop even, China's optical communication is technical to take place

[turconu-blog]

The income of market of global mere network of 2010 will be up to 12,200 million dollars

According to the research report that the advisory organization Infonetics made recently, the income of market of global mere network hardware of fourth quarter of 2007 increases by 16% compared with the third quarter, have reached 3,300 million dollars; And the income of market of mere network hardware of the whole year of 2006 has increased by 11%, has reached 11,900 million dollars. This research report still predicts, the income of market of global mere network equipment in 2010 will reach 12,200 million dollars.

This research report shows, on the market of mere network equipment, always SONET/SDH apparatus has been in the absolute monopoly position, its share was up to 64% in 2006. But the non-traditional mere apparatus SONET/SDH as the global increasingly much service provider adopts WDM and Ethernet apparatus in its access network, not much auspicious days of these traditional mere network equipment. From 2007, the expenses of the operator on SONET/SDH mere apparatus is cut down year by year, and WDM apparatus expenses increases year by year. The chief analyst Michael Howard of this organization thinks, on the market of mere network equipment, the monopoly position of SONET/SDH apparatus has already kept for a long time, but from 2002, the investment of the operator on WDM apparatus began to increase year by year. In fact, in the fourth quarter of 2006, WDM mere apparatus sales amount increased by 18%, and SONET mere apparatus sales amount glided 18%. In 2002, the share of WDM apparatus on the market of whole mere network hardware was 30%, and SONET/SDH was 70%, only 8 years later, it is 2010, it is estimated the expenses of WDM mere network equipment will begin to exceed SONET/SDH apparatus for the first time.

This research report is pointed out, competition pressure, broadband, movement traffic flow and IPTV and video content,etc. opportunity increased day by day are promoting its network of operator's constant staging, the market of mere network will continue keeping the momentum of growing up healthy and sound among 5 years that this is impelled next, but the situation that the transition from SONET/SDH to WDM apparatus will make the income on the market of whole mere network equipment basically keep balancing in the following 5 years.

This research report still points out, the income of market of global mere network equipment in 2010 will reach 12,200 million dollars. The market of global mere network equipment in 2007, Alcatel Lucent Company continues keeping the global leading position, secondly it is Huawei Company, it is the north electricity again. On the market of mere apparatus WDMROADM apparatus of the trunk network, Siemens Company is in global leading position, but Cisco System Co. is in leading position on the mere apparatus ROADM market of the metropolitan area network. On the market of mere network equipment of the whole world, it is 33% that North America area has occupied 35% of the market share, Europe, Asian-Pacific area is 27%.

[molnao-blog]

Mere networking faces the new opportunity Improve the capacity as the task of top priority

Have recombinate been and has alreadied raised the curtain by concerned telecommunications, will hold. As to calm market of China Telecom over the past more than half year, where will next focus present? Networking in which field form invest climax? The reporter thinks, mere networking will become and recombinate one of the key fields that the last every large telecommunication operator invests in the construction of in the second half year most probably, and then spur investment of the new round of telecommunication. To mere networking that has already turned out a prestigious institution before this, it is an opportunity to recombinate, the broad band demand is the motive force, the difference demand is a challenge. While the telecommunication network makes the transition toward the whole IP, the development of the mere network will undoubtedly welcome the new opportunity.

Motive force, opportunity and challenge

To the improvement day by day of the broadband demand with users, broadband exceeds the narrowband, data to exceed the speech, it is the unresistable trend. The Internet user of broadband only accounted for 6.3% in all Internet users in 2002, this already nearly 78% proportions in 2007, indicate the development of China Internet has already stepped into broadband era. By the end of 2007, Chinese Internet user's quantity reaches 210 million, among them Internet user is up to 163 million broadband, the number of users of the broadband access is up to 66,460,000. In the first quarter of 2008, the number of users of China's broadband will exceed U.S.A. to occupy first place in the world especially, up to 71,600,000. By the end of September of 2007, China lay the intersection of optical cable and total number up to 5,441,045 the intersection of skin and long kilometer already, the used optic fibre exceeds 100 million core kilometers, increase the long kilometer (27%) of 116 covers compared with the end of 2006 . These figures mark the steady-state growth of networking of China's optical communication.

The rapid increase of broadband users, come from users to heighten to the demand of the video service to a great extent. In the bandwidth is consumed, there is a very important factor now, the video taking P2P as transmission mode is employed and developed. P2P has already accounted for 60% to 80% of the whole network traffic. Future video of Internet represented by P2P is employed more popularly, employs and contains a plurality of fields such as the amusement, education, commercial affair, information service, and is developing toward high definition video. In addition, the operator will drive the demand snowball of the bandwidth to the popularization of business such as IPTV, video controlling, video communication. The applied focus of broadband mainly has IPTV, enterprise's informationization, E-business, instant messaging, blog, Network Games and Home Networking,etc.. The business of wideband multimedia relying mainly on audio frequency and video uses more and more extensive, become the mainstream. Broadband service at the same time is recreational more and more outstanding, the new business emerges in an endless stream. In addition until informationalized acceleration develop, user and personal user rent to high quality, high-capacity resource and fictitious demand of network service get more and more, original basic data traffic network, traditional mere transport networks, developing IP networks can't totally meet these demands, still depend on the characteristic mere business network of possessing high capacity, transmittance, high quality, intelligent etc..

The broadband service will move towards diversification and difference progressively, force the intersection of telecommunication and operator need, make the transition to more personalized service subdivide on the basis of the customer, progressively offering popular communication based on general demand service. Require broadband to meet the demand that the business makes the transition, can be while offering high network bandwidth, bear the weight of business such as pronunciation, video, data, Internet, and can and employ the demand according to the customer, ability to offer difference service.

Broadband demonstrates the diversification of type of traffic and business and flows into the uncertain characteristic. Diversification, individualized, characteristics such as melting, amusing,etc. immediately are appearing in the customers of masses. And commercial customers such as enterprises, the government,etc., have fast, such demand characteristics as security, service quality are transparent, it is mutual that it is turned to interdynamic strong information that the concrete demand has already been communicated briefly, inside information has been fast respects such as flowing, information security backup,etc.. In addition ISP, ICP customer, the intersection of demand and characteristic of them have management,etc. high in quality, cover, the instructions for use have already been rented the demand to turn to the fictitious network resource gradually. To different users' difference demand, besides adjusting on the access network aspect, with the technical progress, the mere transport network will play a one's own role too. The mere transport network not only offers for operator's one's own business network and transmits the basic network supported, also begin more and more as the mere business network multi-place offers resources for customer and hires out business and various forms transport service directly. The service method of the mere business network is to realize the difference is served, can offer technical indicators such as different protection grade, time delay, usability,etc. to different customers and different application, and service indexes such as different openning time limit, rate, service rank,etc..

Improving the capacity has already become task of top priority

The most important characteristic of optical communication has the bandwidth resources that can not be nearly used up. According to prediction of China Telecom, within the following 5 years, bandwidth 50% speed of the above increase with every year, by 2010, the trunk line bandwidth flowrate will reach above 50Tbit/s, more than 97% among them are the bandwidth of data. So, it is existing and newly building primary task that the capacity of the optical transmission line is development of mere network in the future to improve.

There are two routes to improve capacity: Raise single-channel transmission rate and increase number of channels. The applied DWDM technology at present, the single-channel speed regards 10Gbit/s as the mainstream, the wavelength counts and can support 160 waves at most. Further improve the wavelength supported and count the difficulty relatively largely. So, upgrading 10Gbit/s to 40Gbit/s becomes very urgent task, the application of 40Gbit/s is urgent day by day in other words.

China Telecom has succeeded in carrying on the transmission test of 40Gbit/s on the circuit between Nanjing and Hangzhou in September of 2007. This is that China the third 40Gbit/s transmits the test, the first test was 2004 40Gbit/s that CERNET was carried on among between Beijing and Tianjin was transmitted, the second test whether Shanghai reach 80* 40Gbit/sDWDM system between Hangzhou. Test itself except verifying 40Gbit/s technical maturing status, reveal operator to demand to raise transmission capacity even more. In addition, with promise to 40Gbit/s and development of 100Gbit/s from Wan at the rate of network very much, application of 40Gbit/s high speed the trend different to stop even, China's optical communication is technical to take place

[molnao-blog]

The income of market of global mere network of 2010 will be up to 12,200 million dollars

According to the research report that the advisory organization Infonetics made recently, the income of market of global mere network hardware of fourth quarter of 2007 increases by 16% compared with the third quarter, have reached 3,300 million dollars; And the income of market of mere network hardware of the whole year of 2006 has increased by 11%, has reached 11,900 million dollars. This research report still predicts, the income of market of global mere network equipment in 2010 will reach 12,200 million dollars.

This research report shows, on the market of mere network equipment, always SONET/SDH apparatus has been in the absolute monopoly position, its share was up to 64% in 2006. But the non-traditional mere apparatus SONET/SDH as the global increasingly much service provider adopts WDM and Ethernet apparatus in its access network, not much auspicious days of these traditional mere network equipment. From 2007, the expenses of the operator on SONET/SDH mere apparatus is cut down year by year, and WDM apparatus expenses increases year by year. The chief analyst Michael Howard of this organization thinks, on the market of mere network equipment, the monopoly position of SONET/SDH apparatus has already kept for a long time, but from 2002, the investment of the operator on WDM apparatus began to increase year by year. In fact, in the fourth quarter of 2006, WDM mere apparatus sales amount increased by 18%, and SONET mere apparatus sales amount glided 18%. In 2002, the share of WDM apparatus on the market of whole mere network hardware was 30%, and SONET/SDH was 70%, only 8 years later, it is 2010, it is estimated the expenses of WDM mere network equipment will begin to exceed SONET/SDH apparatus for the first time.

This research report is pointed out, competition pressure, broadband, movement traffic flow and IPTV and video content,etc. opportunity increased day by day are promoting its network of operator's constant staging, the market of mere network will continue keeping the momentum of growing up healthy and sound among 5 years that this is impelled next, but the situation that the transition from SONET/SDH to WDM apparatus will make the income on the market of whole mere network equipment basically keep balancing in the following 5 years.

This research report still points out, the income of market of global mere network equipment in 2010 will reach 12,200 million dollars. The market of global mere network equipment in 2007, Alcatel Lucent Company continues keeping the global leading position, secondly it is Huawei Company, it is the north electricity again. On the market of mere apparatus WDMROADM apparatus of the trunk network, Siemens Company is in global leading position, but Cisco System Co. is in leading position on the mere apparatus ROADM market of the metropolitan area network. On the market of mere network equipment of the whole world, it is 33% that North America area has occupied 35% of the market share, Europe, Asian-Pacific area is 27%.

[qwnse-blog]

South Korean telecommunications are chosen the mere network solution of Alcatel Lucent

Alcatel Lucent ( Paris stock exchange and New York stock exchange: ALU) Announce recently, the major operator's South Korean telecommunications of fixed net of South Korea are disposing the mere network solution of Alcatel Lucent, in order to strengthen the flexibility and managerial ability of its existing transmission network. Through this solution, South Korean telecommunications can expand the network capacity of broadband, meet the demand for the bandwidth of existing and new broadband service and demand that the movement flowrate passes back, and can simplify the existing network operation way. What South Korean telecommunications are being disposed is the key node (MCC) of 1678 metropolitan areas of Alcatel Lucent . This is that one is suitable for the metropolitan area and applied extendible platform of core network, can integrate data and transmission function in the single node, make the investment in order to optimize the network. Run through the reduced network, Alcatel Lucent 1678 MCC has offered the solution with high cost-benefit ratio for fixed net and Mobile network operator, in order to assemble and convey the traffic flow of many agreements from metropolitan area to core network. In addition, this be lasted industry leading position the integrated levels of scheme,it can reduce by operation cost further. The solution of Alcatel Lucent can be divided into groups, time-multiplexed (TDM) through 1350 supervising systems And the comprehensive management of the wavelength business. "With data and communication transmission and close day by day and network traffic increased day by day of people's life, solution of developing running, high integration density of the reduced network that we need to pay close attention to the fact, in order to meet market's of communication demands, " Executive vice president Chul Kim of planning department of international network represent South Korean telecommunications. "The solution of Alcatel Lucent has modularized frameworks, we can increase and expect to expand the staging according to the market whenever and wherever possible. " "We are devoted to helping South Korean telecommunications to pass and run a simple network, can offer the existing and new business, and have cost that offers the networks of security, seamless link service with the lowest overall network, "The mere person in charge Romano Valussi of network Division of Alcatel Lucent shows. "Our solution offers a reliable and advanced operation platform for South Korean telecommunication, in order to meet its user's of broadband service demands. " This cooperation will further strengthen South Korean telecommunications and long-term cooperation relation in the field of mere network of Alcatel Lucent, South Korean telecommunications have already disposed many Service Nodes (OMSN) of mere network of perception of Alcatel's data before this The system and 1696 metropolitan area wavelength division multiplexing platforms. About Alcatel Lucent Alcatel Lucent ( Paris stock exchange, New York stock exchange: ALU) Offer the solution for service provider, enterprise and government of the whole world, help it to offer pronunciation, data and video service for terminal user. In fixed moving, merging the intersection of broadband and market, IP technology, application, leader of service field as one, Alcatel Lucent carry solution to get end, make people can move in the course enjoying the abundant communication service, at home, work. Alcatel Lucent has the 79,000 staff, the business spreads all over 130 countries, it is a local cooperative partner with global resource. The company has one of the experience most abundant globle service group and research, technology and innovative organization of telecommunication trade maximum telecommunication trades. The amalgamation income of Alcatel Lucent reached 18,600 million euro in 2005, the company was headquartered in France, carry out the office and is set up in Paris.

[qwnse-blog]

ACE succeeds in demonstrating the passive optical network on mountain of Putuo of Zhejiang

On December 8, are loved Sri Lankan (ACE) by Shenzhen Science Technologies Co., Ltd. hosts broadband, GEPON technology which the peculiar thread TV apparatus limited company of Ningbo health does jointly demonstrates live that will be in the Holy Land, Haitian Buddhism country of Nanhai Sea ----The mountain of Putuo of Zhejiang is held, the leaders, experts from Zhejiang Province and nearly 100 multidigit TV stations and network companies of the circumference city experienced ACE passive optical network live " Passive " Glamour.

The mountain GEPON technology of Putuo demonstrates the meeting live

Putuo mountain lie in the intersection of Zhoushan Island and the intersection of east and sea area, face each other across the sea with world-famous the intersection of fishing port and door Shen, it is one of the mountains of the Christian name of four Big Buddhism in China, in order to travel, spend holidays, lie fallow in the famous scenic spot, there are 6000 residents on the island, because geographical environment is relatively closed, residents and the passenger worry about the demand cut on the island.

Mountain broadcasting and TV GEPON technical application in Putuo, it is ACE that introduces one of another representative classical cases following a plurality of successful cases of China of networking products of Vista1600 series passive optical.

Holy Land of Nanhai Sea Experience ACE passive optical network in passion

The mountain broadcasting and TV GEPON network first project in Putuo are the Residential Area of Herba Ephedrae, have adopted the access scheme to the unit of the corridor of optic fibre, use the dual-fiber ONU to insert, combine five kinds of lines and EPON +EOC technology, solves the data to insert and insert with CATV at the same time, customer access is the highest in bandwidth to reach 100Mbps. The mountain broadcasting and TV of Putuo plan to apply this technology to hotel and administrative area next, realize optic fibre is inserted passively on the whole island.

Demonstrate live that knows this time, has summarized the real application, construction experience and prospect forecast of network development of afterwards of the mountain broadcasting and TV GEPON network of Putuo, and fully combine " And then change era " Integrated service develop,last scheme selection network on is it scientific and network the access schemes of last 100 meters, broadcasting and TV leader and expert of one have experienced and exchanged with reach.

At the meeting, ACE the intersection of continent and Li Gui nine gentleman, Vice President of operation center, the intersection of passive optical network and current situation of development and trend go on explain exhaustively at present, and combined the technological characteristic of ACE GEPON system and used and offered many kinds of systematic solutions suitable for user of broadcasting and TV to use, Gui Li nine excellence of gentleman introduce and humorous explanation style enable the meeting scene burst into warm applause many times. Meanwhile, also especially invited Microsoft (China) at the meeting Dr. Zhang WenSheng of the company has made > of VOD business has gone on in real network VOD video on demand and high definition IPTV are demonstrated lived. In the afternoon, 100 multidigit leaders attending the conference and experts visited ACE EPON mould Residential Area -----Residential Area of Herba Ephedrae, and carried on warm experience exchangement with technicians, and t on the Internet experienced the infinitetial Area

Involve in " The market " The beginning succeed being empirical Vista passive optical network,plan efforts on it is getting more constant to last it new glamour constantly.

[qwnse-blog]

Cisco E-FTTH helping hand European operator builds all network

Operator Free of the European unification of three nets (Iliad group) Announce recently the mere network of its first maximum in France will adopt IP NGN apparatus and Ethernet FTTH technology of Cisco.

According to the scheme of Free, they will insert 2 million families of Paris to the European fiber optic net of the maximum in the first stage. Free estimates every user's bandwidth can be in order to exceed 50Mbps, the monthly expenses do not exceed 29.99 euro. Can offer and include high clear IPTV, VoD, multimedia communication and WEB 2.0,etc. business.

CEO Michael Boukobza, Company of Free, show they choose the intersection of Ethernet and point-to-point the intersection of FTTH and framework can face the future application with such a framework, can guarantee investment repayment, other frameworks do not have obvious competitiveness. Enter in France in succession each household the optic fibre to let in the following several years, even can all guarantee to lead in decades.

"Today is released and adopt Cisco's technology to explain Free too constantly the innovative reform is keeping the leading position of market of unification of three nets. " The executive vice president Thierry Drilhon of Cisco shows, " we will strengthen and study ServiceFlex design and Ethernet FTTH framework constantly, develop of future generation solution, FTTH of Ethernet, in order to meet customer's demands, bandwidth, person who use, such as being safe. " Cisco represents in the network of new generation, the cost of passive fiber optic net is most high, needn't install the active device within the specific limits in Ethernet FTTH solution of Cisco, thus has reduced the cost of investment.

[olenerez-blog]

Undertake FSAN standard alliance and ITU-T SG15 Q2 meeting in resurgence

News The resurgence communication succeeds in undertaking FSAN standard alliance and ITU-TSG15Q2 meeting in Shanghai, FSAN standard alliance's president KentMcCammon has spoken highly of organization of this meeting. Global first one " The wave-divisions based on AOWC mix and multiplex the network system of passive optical time " The principle prototype machine is exhibited during meeting too.

FSAN( FullServiceAccessNetworks) The standard alliance was initiated and established in 1995 by 7 main Network Operators in the world, it is a forum of FTTH sector standard field with strongest influence power. Members constitute the global famous operator, trade first-class apparatus manufacturer,etc. at present, at&t, British Telecom (BT) ,China Mobile, China Telecom, Deutsche Telekom (DT) ,Freneh Telecom (FT) ,NTT, Italy's telecommunications (TI) ,Verizon, the resurgence communication,etc. is its member.

During the meeting, every large representative of operators in the world has visited communication Shanghai of resurgence and studied the base PON laboratory, the resurgence communication has put out the first in the world ceremoniously " Because of the AOWC (AOWC) Wave-division time mixing multiplex passive Optical Network system " Principle prototype machine, this technology has solved long distance optical transmission, large bandwidth demand and user Optical Network unit (ONU) that the access network of optic fibre has been existing all the time " colourless " Difficult problem it wait for, operation cost that be lasted operatored,and can PON system that be disposed at presents compatibles smooth, it is a passive Optical Network (NG-PON) of future generation Technical development and gradual progress have established the solid foundation.