《光纤通信课程设计》课件：Class5-03.pptVIP

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《光纤通信课程设计》课件：Class5-03.ppt

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Fiber Optic Network DesignX. Wu, M. J. Li, H. M. YanDept. of Opt. Engr., ZJU2011Class 5 Outline?Motivation and BackgroundFTTx approachesPoint-to-pointAONTDM-PON (BPON, EPON,GPON)WDM-PONExercise 25 Years of Bandwidth Growth? Access Network Evolution? Major Approaches in US? Legacy Copper Wire Solutions? Near Term Applications? FTTx Approaches? Lots of Names and Confusion?FTTx = Fiber-to-the-xFTTH - HomeFTTC - CurbFTTN - Node or NeighborhoodFTTP - PremiseFTTB - Building or BusinessFTTU - UserFTTZ - ZoneFTTO - OfficeFTTD - Desk Point-to-Point Connections? Active Optical Network AON? TDM-PON Basics? many types of PONs have been defined APON ATM PON BPON Broadband PON GPON Gigabit PON EPON Ethernet PON GEPON Gigabit Ethernet PON CPON CDMA PON WPON WDM PONin this course we will focus on GPON and EPON (including GEPON) with a touch of BPON thrown in for the flavorTypes of PON PON Technologies: OCDMAOCDMA (Optical Code Division Multiple Access)Data sourceData recoveryC1 Spread spectrum Frequency hopping OOC( Optical Orthogonal Coding ) OBI CiCnC1CiCnOpt encOpt dec G.984.5 publishedG.984.1, G.984.3G.984.4 Rev2 publishedG.984.2 amd2, G.984.6 publishedGPON Specs focused enhanced: 3Q07-1Q08x-PON Technology Time LinSANfounded‘98‘99‘02‘04‘05‘06‘01BPON (ITU G.983.1) publishedBPON OMCI (G.983.2) publishedIEEEEPONbeginsFSAN begins GPON‘03BPON OMCI (G.983.2) RevisedGPON OMCI (G.984.4) publishedGPON TC (G.984.3) publishedIEEE 802.3ah (EPON) published1st GPON Interop EventFSAN begins NG-PONFSAN GPON CTSBPON Completed: April 2000BPON 1st Interop Event: March 2004 BPON 1st wide-scale deployment: May 2004GPON Completed: June 2004GPON 1st Interop Event: Jan 2006GPON 1st wide-scale deployment: 4Q 2007‘07IEEE begins 10GEPON‘087th GPON Interop Event‘09 TDM PON ExampleDownstream – TDM transmission with multiple “listeners” (encryption to insure privacy)Upstream – TDMA transmission with upstream transmissions (bursts) scheduled to prevent overlapPONs are (in some