Ethernet in the First Mile Optical Architectures and Fibers John George Lucent Technologies 3/05/2001

Transcription

1 Ethernet in the First Mile Optical Architectures and Fibers John George Lucent Technologies 3/05/2001 IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 1

2 EFM FTTH/B Optical Architectures 25,000 FTTH Subscribers - (Cumulative 000) Electronicast August M 20,000 15,000 10,000 5,000 5 M 0 Drivers of FTTH/B Poor quality of copper loop/drops Copper exhaust due to cross talk Need for BW >> 10 Mbps (Digital Video, Video on Demand, Video clips, etc) Conclusion: Large market potential for FTTH/B IEEE EFM should support viable FTTH/B Architectures IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 2

3 EFM FTTH/B Optical Architectures Point-to-Point (PtP) Ethernet Mux PtP Ethernet over Fiber 1 Gbps and above Ethernet Mux l2 WDM WDM PtP Ethernet over Fiber 100 Mbps and above l2 X KM Y KM CO/Hub up to 20 KM Residence/ Business/MTU IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 3

4 EFM FTTH/B Optical Architectures TDMA/TDM PON (EPON) 1310/1550 nm up to 2.5 Gbps 1310/1550nm Burstmode OLT n 1 fiber/ <= 64 subscribers 1550 nm 1310 nm TDM TDMA Passive Splitter(s) 1310 nm 1550 nm 1 F/subscriber n s 10/100 Base-T CO/Data Center up to 20km 155 Mbps Gbps Business/ Residence Single Single Mode Fiber, Standard SMF or EWB Passive, flexible OSP Physical/Optical Layer re-use from ITU G (FSAN ATM-PON) for 622Mbps and lower IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 4

5 EFM FTTH/B Optical Architectures PON Outside Plant (OSP) Flexibility OLT OLT OLT Point-to-point, trees, linear add/drop, rings, Single or cascaded splitter (1:32); (1:2) (1:16), (1:4)(1:8)... Simple engineering of facilities optical loss budgets IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 5

6 EFM FTTH/B Architecture Options CWDM EPON w/standard SMF or EWB Fiber OLT λ 1, λ 2... λ n λ n + 1, λ n λ 2n.. 1 fiber / n subscribers CWDM λ 1 λn +1 s n 100 Mbps - 10 Gbps CO/Data Center Up to 20 km Business/ Residence Future higher bandwidth implementation Can re-use fiber plant from EPON or Remote Switched) IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 6

7 Coarse Wavelength Division Multiplexing Grids Proposed to TIA (1/01) and ITU (2/01) Coarse channel plan 1: O-Band: E-Band: S+C+L-Band: 1270, 1290, 1310, 1330 nm 1370, 1390, 1410, 1430 nm 1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 nm Coarse channel plan 2: O-Band: , , , (802.3ae 10 GbE) E-Band: 1380, 1400, 1420, 1440 S+C+L-Band: 1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 nm IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 7

8 CWDM Grid Standards Activities IEEE (P802.3ae) has proposals to support 4 CWDM channels in the O band ( nm) January 2001 Approvals TIA approval of proposed grids as Lucent contribution to ITU US Dept. of Commerce SGB approval as Lucent contribution to ITU February 2001 Presentation at ITU Q.16 Systems: Directed to present white contribution at next conference in October; propose as new rec. or as change to previous rec. Q.17 Components: Identified new CWDM classification for WDM components for G.671 update IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 8

9 Technical/Economic Feasibility Extended Wavelength Band SM Fiber Supports E-Band, greater useable spectrum EWB Fiber eliminates the 1385 nm water peak O Conventional Fiber Loss E S C L U 20 Loss Example: db/km EWB Fiber Loss Wavelength (nm) EWB Fiber: 16 Wavelength CWDM Conventional SMF: 12 Conventional Fiber Spectrum EWB Fiber Spectrum IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 9 (ps/nmkm) Dispersion

10 Extended Wavelength Band Fiber Identical specifications to Std SMF, PLUS: 25% fewer fibers in CWDM feeder 25% less CWDM CO floor space and apparatus requirements Improved CWDM packaging economy Lowers installed CWDM system cost by 10% Opens E band spectrum Maximum future proofing for 25+ yr fiber plant. IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 10

11 Recommendation IEEE EFM should reference the following fiber types and architectures Std SMF EWB SMF IEC (Category) B1.1 B (extended wavelength band) ITU G.652.B G.652.C G652 (extended wavelength band) TIA 492CAAB IVa IVa (Class) (dispersion-unshifted with low water peak) Architectures EPON EPON Supported P2P Ethernet Mux P2P Ethernet Mux 12 λ CWDM EPON 12 λ CWDM EPON 16 λ CWDM EPON IEEE EFM Meeting - Hilton Head NC, 3/ John George, Lucent Technologies 11