Mike Gilmore Managing Director,
Mike Gilmore Standards Activities Member: ISO/IEC JTC1 SC25 WG3: Generic Cabling ISO/IEC JTC1 SC25 Project Team: SOHO Convenor: ISO/IEC JTC1 SC25 WG3 IPTG: Industrial Premises Cabling Convenor: CENELEC TC215 WG1: IT Cabling CENELEC TC215 WG1 PT Industrial Premises Cabling Secretary: CENELEC TC215 WG1 PT Data Centre Cabling Mike Gilmore Senior Partner, Managing Director Chairman: BSI TCT7/-/1: IT Cabling BSI TCT7/-/3: IT Cabling Support Group Technical and Standards Director: Fibreoptic Industry Association e-mail: mike.gilmore@btinternet.com Mobile: +44 () 786 11563
Optical Fibre Transmission Wavelengths VISIBLE LIGHT FRA-RED - OPTICAL FIBRE O E S L C Bands 1st Window 2nd Window 3rd Window 4 5 6 7 8 9 1 11 12 13 14 15 16 17 Wavelength (nm) Multimode 85 nm Window Wavelength (nm) 1st 79-85 - 91 Band Wavelength (nm) Singlemode 131 nm 2nd 1285-13 - 133 O 1285-135 Multimode 13 nm E S L 135-147 147-153 153-1565 C 1565-1625 Singlemode 155 nm
MMF: Attenuation and Modal Bandwidth Optical fibre geometry (standardized) 5/125 62.5/125 Core diameter (µm) 5 ± 3 62.5 ± 3 Cladding diameter (µm) 125 ± 3 125 ± 3 NA.2 ±.15.275 ±.15 Optical fibre performance (options) Attenuation coefficient dbkm -1 max. 85nm 13nm?? Modal bandwidth MHz.km min. 85nm 13nm?? 3.5 dbkm -1 1.5 dbkm -1 Attenuation coefficient (dbkm -1 ) 5 7 9 11 13 Wavelength (nm) Modal Bandwidth (MHz) 2 15 2MHz.km MMF 1 5 5 1 15 2 Length (m)
Optical Fibre Categories CABLED OPTICAL FIBRE Attenuation coefficient (dbkm -1 max) Modal bandwidth OFL 1 (MHz.km min) Modal bandwidth LL 2 (MHz.km min) Propagation delay (ns.m -1 max) Wavelength 85nm 13nm 85nm 13nm 85nm 13nm 85nm 13nm ISO/IEC 1181 Ed. 2 (22) AND EN 5173-1 (22) MMF SMF 5/125 or 62.5/125 5/125 OM1 OM2 OM3 Wavelength OS1 3,5 131nm 1, 1,5 155nm 1, 2 5 15 5 5 5 - - 2 - - - 5 131nm 155nm 5 OS2* OS1 1,,4,4 1, 5 NOTE 1: OFL = OverFilled Launch (LED-like) NOTE 2: LL (or RL) = LASER Launch ( or Restricted Launch) * standard in development
Optical Fibre Applications Mbs -1 1 1 4/16 52 1 1 1 1 1 133 155 266 531 622 1 162 1 NETWORK NAME ISO/IEC 882-3: FOIRL ISO/IEC 882-3: 1BASE-FL/FB ISO/IEC TR 1182-4: 4 & 16 Mb/s Token Ring M ISO/IEC 882-12: Demand priority ISO/IEC 9314-3: FDDI PMD ISO/IEC 9314-4: FDDI SMF-PMD ISO/IEC 9314-9: FDDI LCF-PMD ISO/IEC 882-3: 1BASE-FX ISO/IEC 14165: FibreChannel M ISO/IEC 14165: FibreChannel ISO/IEC 14165: FibreChannel M IEEE 82.3ab: 1BASE: Ethernet ISO/IEC 14165: FibreChannel IEEE 82.3ae: 1GBASE-xyz: Ethernet WAVELENGTHS AND MODAL GROUPS MMF SMF 85 nm 13 nm 131 nm 155 nm 1BASE -SX 1BASE -LX 1BASE -LX -SR/SW -LX4* -LX4* /LR/LW -ER/EW * 1GBASE-LX4 uses Coarse WDM (CWDM) λ 1 = 127±1 (Lane 1) λ 2 = 13±6 (Lane 2) λ 3 = 1325±6 (Lane 3) λ 4 = 1349±1 (Lane 4)
MMF Applications WAVELENGTHS MMF Mbs -1 NETWORK NAME 85 nm 13 nm 1 1 ISO/IEC 882-3: 1BASE-FL/FB ISO/IEC 882-3: 1BASE-FX 1 IEEE 82.3ab: 1BASE: Ethernet 1BASE -SX 1BASE -LX 1 IEEE 82.3ae: 1GBASE-xyz: Ethernet -SR/SW -LX4 Mbs -1 1 1 1 1 NETWORK NAME ISO/IEC 882-3: 1BASE-FL/FB ISO/IEC 882-3: 1BASE-FX IEEE 82.3ab: 1BASE-SX: Ethernet IEEE 82.3ab: 1BASE-LX: Ethernet IEEE 82.3ae: 1GBASE-SR/SW: Ethernet IEEE 82.3ae: 1GBASE-LX4: Ethernet MAXIMUM CHANNEL LENGTH (CHANNEL SERTION LOSS MAX. LENGTH) MMF OM1 OM2 OM3 2 m (12.5 db) 2 m (6.8 db) 2 m (6.8 db) 2 m (11. db) 2 m (6.3 db) 2 m (6.3 db) 275 m (2.6 db) 55 m (3.56 db) 9 m* (4.44 db*) 55 m (2.35 db) 33 m (1.62 db) 82 m (1.8 db) 3 m (2.59 db) 3 m (1.96 db) 3 m (1.96 db) * Inferred values
Connecting Hardware CONNECTG HARDWARE Return loss (db min) Attenuation (db max) ISO/IEC 1181 Ed. 2 (22) AND EN 5173-1 (22) MMF OM1, OM2, OM3 Wavelength Connection Splice All 2 NA All 95%<,5 1%<,75 1%<,3 Wavelength All All SMF OS1, OS2 Connection Splice 35 NA 95%<,5 1%<,3 1%<,75 CONNECTG HARDWARE EQUIVALENT LENGTH MMF 85 nm 13 13 nm nm Mated connection Splice Mated connection Splice,75 db,3 db,75 db,3 db 215 m 85 m 5 m 2 m SMF 131 nm 155 13 nm nm Mated connection Splice Mated connection Splice,75 db,3 db,75 db,3 db 1875 m 75 m 1875 m 75 m
1BASE-FL/FB Attenuation (db, max.) 12 1 8 6 Connecting hardware allowance 62.5/125 OPB 62.5/125 OPB 5/125 3.5dBkm -1 4 Connecting hardware allowance 5/125 2 5 1 15 2
1BASE-FL/FB 12 1 OPB 62.5/125 Attenuation (db, max.) 8 6 OPB 5/125 3.5dBkm -1 4,75dB = 215 m 2 5 1 15 2
1BASE-SX - The Big Misconception 8 7 6 5 Attenuation (db, max.) 4 3 3.56dB 2 1 Connecting hardware allowance 55m 3.5dBkm -1 (corrected to 83nm) 2 4 6 8 1 OM1 62,5/125 OM2 5/125
1BASE-SX and 62.5/125 8 7 6 OPB Attenuation (db, max.) 5 4 3MHz 3 2 Connecting hardware allowance 16MHz OM2 3.5dBkm -1 (corrected to 83nm) 1 2 4 6 8 1
1BASE-SX and 62.5/125 8 7 6 OPB 5,75dB = 65 m Attenuation (db, max.) 4,75dB = 35 m 3MHz 3 OM2 3.5dBkm -1 (corrected to 83nm) 2 16MHz 1 2 4 6 8 1
1BASE-SX and 5/125 8 7 OPB Attenuation (db, max.) 6 5 4 4MHz OM2 OM3 3 2 Connecting hardware allowance 3.5dBkm -1 (corrected to 83nm) 1 2 4 6 8 1
1GBASE-SR/SW - Misconception 8 7 6 OPB Attenuation (db, max.) 5 4 3 2.59dB OM3 2 1 33m 82m Connecting hardware allowance 3m 3.5dBkm -1 (corrected to 83nm) 1 2 3 4 5 OM1 62,5/125 OM2 5/125
1GBASE-SR/SW and OMx 8 7 6 1GBASE-SR/SW OPB 5 Attenuation (db, max.) 4 3 Connecting hardware allowance OM3 3.5dBkm -1 (corrected to 83nm) 2 1 1 2 3 4 5 OM1 62,5/125 OM2 5/125
1GBASE-SR/SW and OMx 8 7 6 1GBASE-SR/SW OPB Attenuation (db, max.) 5 4,75dB = 9 m,75db = 44 m 3 2 OM3 3.5dBkm -1 (corrected to 83nm) 1 1 2 3 4 5 OM1 62,5/125 OM2 5/125
Statistical Modelling
The Impact of Multiple Connections - I Forecast: One Connection 1, Trials Frequency Chart Outliers.228 228.171 171.114.57 1, Trials Frequency Chart Outliers.163 114 Forecast: Two Connections 57 163..122. 1.88 3.75 5.63 7.5 122.2 <99.8%<.75.82.41. 1, Trials Frequency Chart Outliers.117.88 87.75. 1.88 3.75 5.63 7.5 81.5 Forecast: Four Connections 4.75 117.59 58.5.5<1%<1.35.29 29.25.. 1.88 3.75 5.63 7.5.25<1%<2.18
The Impact of Multiple Connections - II Forecast: Six Connections 1, Trials Frequency Chart Outliers.17.8.54 17 Forecast: Eight Connections 8.25 1, Trials Frequency Chart Outliers.84 84 53.5.27.63 26.75 63..42 42. 1.88 3.75 5.63.21 7.5 21.48<1%<2.68. Forecast: Ten Connections 1, Trials Frequency Chart Outliers. 1.88 3.75 5.63 7.5.8 8.9<1%<3.48.6 6.4 4.2 2.. 1.23<1%<3.83 1.88 3.75 5.63 7.5
Average Attenuation and Spread.8 Worst case average.6 attenuation per connection.4 (db).2 2 4 6 8 1 No. of connections 8 7.75dB per connection Connecting hardware attenuation (db) 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 1 No. of connections
1BASE-SX and OM2 7 6 5 4 3 2 1 2 4 6 8 1 No. of connections Attenuation model Bandwidth model - worst case Bandwidth model - reality
1GBASE-SR/SW: OM1, OM2 and OM3 5 4 3 2 1 2 4 6 8 1 No. of connections OM1 62.5/125 12 1 8 6 4 2 2 4 6 8 1 OM2 5/125 5 4 3 2 1 2 4 6 8 1 No. of connections OM3 No. of connections Attenuation model Bandwidth model - worst case Bandwidth model - reality
Data Centre Cabling Standards PREMISES CABLG DA CENTRE CABLG TO CP FD BD CD ISO/IEC 1181 BS EN 5173-1 Telecommunications Outlet Consolidation Point Floor Distributor Building Distributor Campus Distributor pren 5173-5 External Network Interface Main Distributor Zone Distributor Local Distribution Point Equipment Outlet External networks ENI MD ZD LDP EO TO TO TO TO TO ENI Horizontal cabling CP Network access cabling Building backbone cabling FD FD MD Main distribution cabling BD ZD ZD Campus backbone cabling CD LDP Zone distribution cabling EO EO EO EO EO
EN 5173-5: 25? EN 5173-1 pren 5173-1 pren 5173-2 Information technology - Generic cabling systems - General requirements and office areas Information technology - Generic cabling systems - General requirements Information technology - Generic cabling systems - Office premises pren 5173-5 Information technology - Generic cabling systems - Data centres Annex C (informative) Channel insertion loss models for high bit rate, multimode, optical fibre applications