optical fiber and cabling standardsv3 - bicsi · pdf fileoptical fiber and cabling standards...

Optical Fiber and Cabling Standards for Tomorrow’s Data Center

John KaminoProduct Manager – Multimode Fiber

[email protected]@ofsoptics.comOFS

Agenda

• Optical Market Drivers• Fiber and Cable Standards• Application Standardspp• Multimode Fiber Value Proposition• Future of Multimode Fiber• Future of Multimode Fiber• Conclusions

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Agenda


3

IP Traffic Growth

Cisco Visual Networking Index:Forecast and Methodology, 2010-2105J 2 2011

Mobile: Includes mobile data and Internet traffic generated by handsets, notebook cards, and mobile b db d t

June 2, 2011

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broadband gatewaysInternet: Denotes all IP traffic that crosses an Internet backboneManaged IP: Includes corporate IP WAN traffic, IP transport of TV/VoD

Internet Applications

YouTube December 2011 – 48 hours of video uploaded every minute 1

December 2011 – 3 billion videos viewed each day1

Apple Apple June 2011 – Apple iTunes hits 15 billion song sales 2

June 2011 – Apple iTunes hits 14 billion app downloads 2

OS 2 June 2011 – 200 million iOS users2

Facebook December 2011 – 800 million active users, 50% of users log , g

on in any given day4

1 http://www.youtube.com/t/press_statistics/2 WWDC 20113 http://www apple com/pr/library/2011/01/22appstore html

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3 http://www.apple.com/pr/library/2011/01/22appstore.html4 http://www.facebook.com/press/info.php?statistics

What is happening today?

New York Times, February 16, 2011

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High Performance Computing

TodayPERCS Supercomputer

2012Yesterday

Roadrunner Supercomputer2008

2012

“Need for Higher Density and Lower Power Interconnects for Future HPC and Servers” January 2011for Future HPC and Servers , January, 2011Petar Pepeljugoski, Marc Taubenblatt, and Jeff KashIBM

The Cloud is coming!

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Cloud Penetration

• Gartner notes that cloud penetration is at very low levels, even in attractive applications

• Cloud application growth will drive higher bandwidth d d hdemand, not just in the data center, but also in the public network

“Google and Apple: Disrupting Microsoft and Others”December 14, 2011Tom Austin, VP & Gartner FellowDavid Mitchell Smith, VP & Gartner Fellow

Next Generation Speeds Coming!

http://www.eetimes.com/electronics-news/4215814/IEEE-looks-beyond-100G-Ethernet

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http://www.terabit-ethernet.com/terabit-or-400g-ethernet/

Worldwide Multimode Fiber Demand

IP t ffi d th IP traffic and server growth drive fiber demand

Virtualization increasing server usage and bandwidth demandsdemands

Servers requiring multiple Ethernet connectionsBandwidth

requirementsqRedundancy

10Gbps server links drive 40Gbps uplinksParallel 12 fiber links

lreplacing copper or 2 fiber duplex links.

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Product Mix by Fiber Type

Agenda


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OM4 Multimode Fiber Standardization

• Complete in both TIA and IEC– TIA-492AAADTIA 492AAAD– IEC 60793-2-10, Fiber Type A1a.3

• Specifications:– Effective Modal Bandwidth (EMB) >/= 4700 MHz-km

• Allows 2 methods for verification– DMD Masks or EMBc– OFL Bandwidth @850nm >/= 3500 MHz-km

• Ensures performance with sources that launch more power in outer modes.

– OFL Bandwidth @1300nm >/= 500 MHz-km • Ensures backward compatibility for FDDI, 100BASE-FX, 1000BASE-LX, etc.

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Fiber Types and Standards

ISO/IEC 11801ANSI/TIA-568-C.3 IEC 60793-2-10

(fib )TIA/EIA(fib )

ITU-T(fib )

Industry Standards

ANSI/TIA 568 C.3(cable) (fiber) (fiber) (fiber)

62.5/125 OM1(1) A1b 492AAAA ---50/125 OM2(2) A1a.1 492AAAB G.651.150/125 OM3 A1a.2 492AAAC ---50/125 OM4 A1 3 492AAAD

Fiber Type

50/125 OM4 A1a.3 492AAAD ---Std SM OS1 B1.1 492CAAA G.652.A or B

Low Water Peak SM OS2(5) B1.3 492CAAB G.652.C or D

(5) OS2 is referenced in the standard ISO/IEC 24702 "Generic Cabling for Industrial Premises"

(1) OM1 is typically 62.5µm, but can also be 50µm(2) OM2 is typically 50µm, but can also be 62.5µm

ISO/IEC 11801ANSI/TIA-568-C.3 "Optical Fiber Cabling Components Standard"

IEC 60793-2-10

TIA/EIA-492AAAx "Detail Specification for… Class 1a Graded-Index Multimode Optical Fibers"

"Generic Cabling for Customer Premises"

"Product Specifications - Sectional Specification for Category A1 Multimode Fibres"

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ITU-T G.651.1

ITU-T G.652 "Characteristics of a single-mode optical fibre and cable"

p p"Characteristics of a 50/125 um Multimode Graded Index Optical Fibre Cable for the Optical Access Network"

Optical Fiber Types and Cable Specifications

Wavelength Max LossFiber TypeMin Bandwidth

(MHz km)(nm) (dB/km) OFL BW EMB

OM1 850 3.5 200 n.a.62.5 µm 1300 1.5 500 n.a.OM2 850 3 5 500 n aOM2 850 3.5 500 n.a.50 µm 1300 1.5 500 n.a.OM3 850 3.5 1500 200050 µm 1300 1.5 500 n.a.50 µm 1300 1.5 500 n.a.OM4 850 3.5 3500 470050 µm 1300 1.5 500 n.a.OS1 1310 1.0 n.a. n.a.

Single-Mode ISP 1550 1.0 n.a. n.a.OS2* 1310 1.0 n.a. n.a.

Single-Mode ISP 1550 1.0 n.a. n.a.* OS2 is a "low water peak" single-mode fiber that has low attenuation in the 1385nm region

16OMx and OSx designations are from ISO/IEC 11801 and ANSI/TIA-568-C.3

OS2 is a low water peak single mode fiber that has low attenuation in the 1385nm region. It is suitable for CWDM applications.

What is going on with Bend Insensitive Multimode Fiber?Bend Insensitive Multimode Fiber?

• Standardization process has begun– TIA task force chaired by Dave Mazzarese, OFS

leading standardization effort – Work underway in IEC to characterize core

diameter and Numerical Aperture (NA) Thi k ill t BIMMF t d di ti i TIA• This work will support BIMMF standardization in TIA

– Work will be required to properly characterize bandwidth and system performance of BIMMFsbandwidth and system performance of BIMMFs

What is bend insensitive multimode fiber(The simple description)( p p )

Bend loss Bend loss Bend loss 100 turns

37.5 mm radius2 turns

15 mm radius2 turns

7.5 mm radius

7 5 mm

Standard 50/125 fiber

0.5 dB(850 & 1300nm)

1 dB(850 & 1300nm)

? dB

7.5 mm attenuation

performance not specified for

standard 50/125

Bend insensitive 0 5 dB

0.1 dB(850 nm)

0.2 dB(850 nm)

standard 50/125 fiber

insensitive multimode

fiber

0.5 dB(850 & 1300nm)

(850 nm)

0.3 dB(1300nm)

(850 nm)

0.5 dB(1300nm)

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What has changed to make Bend Insensitive Multimode Fiber

Bend Insensitive Multimode Fiber

Standard Multimode Fiber

Guided Modes

Optical trench

Leaky Modes

The Challenge with adding an optical trench

• Positive (Guided modes more tightly bound)Macrobend performance improved ~5X– Macrobend performance improved 5X

• Negative (Leaky modes propagate in fiber)Negative (Leaky modes propagate in fiber)– Length dependence of NA and Core size– Uncertain connectivity performance– Uncertain bandwidth performance

Impact of Optical Trench in MMF

Optical trench has a strong impact on short length transmission – (less than 400 meters)

Optical trench has minimal or no impact on long length measurements– (Several kilometers)(Several kilometers)

Most links in a data centers are less than 100 meters and the i l h h ld b id doptical trench should be considered

– How does an optical trench impact connection loss?How does an optical trench impact connection loss?– How does an optical trench impact bandwidth?

Standardization of BIMMF

Work is underway at TIA and IEC to understand and characterize BIMMF, in order to provide a robust product that will support current and

future applications

TIA Standards Activity

• TIA 568 “Commercial Building Telecommunications Cabling• TIA-568 Commercial Building Telecommunications Cabling Standard” – Revision D – May begin in 2012

• TIA-942 “Telecommunications Infrastructure Standard for Data Centers”– Revision A – should publish in 2012– Revision A – should publish in 2012

TIA-942 Telecommunications Infrastructure Standard for Data CentersData Centers

• Originally published in 2005

• Revision TIA-942-A expected publication in 2012

– Major modifications from ANSI/TIA-942 in Optical• OM3 and OM4 are now the only recognized multimode media

types. OM4 is recommended. OM1 and OM2 fiber is no longer recognized.

• LC connector is the recognized single fiber (simplex and duplex fiber) connector.

• MPO is the recognized multi-fiber connectorg• Removed 100m length limitation on optical fiber horizontal

cabling. Now based on individual application requirements.

TIA – 942A Typical Data Center TopologyTypical Data Center Topology

• Main Distribution Area (MDA) i l d h M i Cincludes the Main Cross Connect (MC)– Central point of distribution

C l i l d H i l– Can also include a Horizontal Cross Connect when equipment areas are directly served

• Horizontal Distribution Area (HDA) may include a Horizontal Cross Connect (HC)( )

Agenda


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Evolution of Short Reach Applications

40G & 100G Ethernet (IEEE 802.3ba)

Reach & Media: 40 Gb/s for servers HPC SAN NAS 40 Gb/s for servers, HPC, SAN, NAS

− 10km on SMF (1310nm) 40GBASE-LR4− 100m on OM3 MMF (850nm) 40GBASE-SR4

150m on OM4 MMF (850 nm) 40GBASE SR4− 150m on OM4 MMF (850 nm) 40GBASE-SR4− 7m over copper 40GBASE-CR4− 1m over backplane 40GBASE-KR4

100 Gb/s for switching, routing, aggregation− 40km on SMF (1310nm) 100GBASE-ER4− 10km on SMF (1310nm) 100GBASE-LR4( )− 100m on OM3 MMF (850nm) 100GBASE-SR10− 150m on OM4 MMF (850nm) 100GBASE-SR10− 7m over copper 100GBASE-CR10

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pp

40G & 100G Ethernet (continued)

• Reduced reach of 100m on OM3, 150m on OM4 compared to 10G (300m on OM3, 550m on OM4) is due to relaxation of transmitter spectral width:

– from 0.45 to 0.65 nm

There have been no changes to the fiber itself!There have been no changes to the fiber itself!

1 0 O 4 d 9 % f C• 150m on OM4 expected to support 95%+ of Data Center links.

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High Speed Short Reach Technologies:Multiple Fiber Parallel SystemsMultiple Fiber Parallel Systems

ffor 40G:

•One 12 fiber cable•One 12-fiber cable– duplex link– 8 active fibers

•12 Fiber MPO connector•One wavelength per fiber4 10 Gb/•4 x 10 Gb/s

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High Speed Short Reach Technologies:Multiple Fiber Parallel SystemsMultiple Fiber Parallel Systems

for 100G:for 100G:

• Two 12 Fiber Cables, or 24 fib blfiber Cable– 20 Active– Duplex link

• MPO connector– 2 x 12 fiber

1 x 24 fiber– 1 x 24 fiber• One wavelength per fiber• 10 x 10 Gb/s

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40G & 100G Ethernet – MDI RecommendationsReferences MPO interface req’s/specs of IEC 61754-7.

40GBASE-SR4

Left 4 fibers are TxRight 4 fibers are Rx

100GBASE-SR10(inner 4 fibers unused)

I 10 fib T R R I 10 fib L ft Sid T

Option BOption A Option C

Inner 10 fibers, Top Row are RxInner 10 fibers, Bot Row are Tx(outermost fibers both rows unused)

Inner 10 fibers, Left Side are TxInner 10 fibers, Right Side are Rx

(outermost fibers each side unused)

Inner 10 fibers, Top are RxInner 10 fibers, Bot are Tx

(outermost fiber Top & Bot unused)

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p(recommended)

p

Data Center Environment

Migration to 10Gb/sCat6/6a copperCat6/6a copperActive CableOM3/4 fiber

Migration toMigration to 40 & 100Gb/sOM3/4 Fiber

Data from Alan Flatmannpresented to IEE 802.3 High Speed Study Group January 2008

Why is OM4 important?Fiber dominates in Access to Distribution and Distribution to Core links.

Alan Flatman – Principal Consultant, LAN Technologies, UK“Long Data Center Links vs. Length”IEEE802 3ba Jan 2008 Flatman 01 0108

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IEEE802.3ba, Jan. 2008, Flatman_01_0108

Multimode Fiber Performance Grades

Reach & Bandwidth by MM Fiber Type

600 5000

h m)

Reach (at 10 Gb/s) Bandwidth (at 850nm)

300400500

each

at 1

0 G

b/s)

2000

30004000

andw

idth

km, a

t 850

nm

0100200

62 5 um 50 um 50 um 50 um

Re

(met

ers,

010002000 B

a(M

Hz-

k

OM162.5 um

OM250 um

OM3

LW300

50 umOM4

LW550

50 um

Fib T ( ISO G d )

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Fiber Type ( ISO Grade )

Ethernet Link Distance/Application Mapping

B kbData Lg. Data Very Lg. D t

Link Speed

1 Gb/s

BackboneCentergCenter Data

Center

1 Gb/s

10 Gb/s OM4 OM3/OM4

40 Gb/s

100 Gb/sOM4 OS1/OS2

100 Gb/s

Link Distance 100m 150m 300m 550m 1000m >1000m

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Ethernet – Next Generation

• Next Generation 100Gb/s Optical Ethernet Study Group– 4x25Gb/s transmission4x25Gb/s transmission– Different options discussed – not all will be chosen

Can Multimode Fiber Transmit 25Gb/s?

C. Patrick Caputo- Georgia Institute of TechnologyStephen E. Ralph – Georgia Institute of TechnologyYi Sun – OFS

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Early 25Gb/s Transmission Test Results

O E DiOpen Eye Diagram 25Gb/s transmission over 200m OM4 LaserWave® 550 fiber!!!

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Fibre Channel Link Distance

Link Speed Media Type

4G FC OM4

OM3/OM48G FC 800-M5-SA-I

8G FC OM4

OM3/OM4

800-M5-SN-I OM4

16G FC OM4

OS1/OS2

Link Distance 100m 125m 150m 190m 300m 380m 400m >400m

Fibre Channel –Next Generation

• 32G Fibre Channel Roadmap – Still serial transmission!

• 2 Fibersl d• Same external connectors – SFP and LC connectors

– Backward compatibility to 8 GFC and 16 GFCl d l– Planned FC-PI-6 release 2H2012

– Product shipment – 2014– Target link distance – 100m on OM4 fiber

Agenda


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Comparison between Single-mode and Multimode Fiber SystemsMultimode Fiber Systems

Traditionally, optoelectronics have driven the cost difference between single-mode and multimodemode and multimode

• Single-mode CWDM systemPro: Lower cabling cost– Pro: Lower cabling cost

– Con: Significantly higher transceiver cost– Con: Higher power consumption

C L i– Con: Larger size

• OM3 and OM4 multimode parallel systemsP M h l t i t i i ti 10Gb/ VCSEL– Pro: Much lower transceiver cost using existing 10Gb/s VCSELs

– Pro: Lower power consumption– Pro: Smaller footprint

C Hi h bli t

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– Con: Higher cabling cost

Single-mode vs. Multimode 100Gb/s Cost Comparisonp

Power Consumption

• Lower power consumption critical as link density and speed increasespeed increase– 100G CFP single-mode transceivers consume 20+ watts– 100G CXP multimode transceivers consume ~5 watts100G CXP multimode transceivers consume 5 watts

• Savings ~ 15 watts/transceiver• Cooling – another 15 watts/transceiver

• 4 transceivers/server (2 on each end), multiplied by hundreds or thousands4 transceivers/server (2 on each end), multiplied by hundreds or thousands of servers per data center can consume significant amounts of power!!

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Single-mode vs. Multimode Module Size

• Significantly larger f t i t f i l dfootprint for single-mode CFP module

• Much lower faceplate densitydensity

• 4 single-mode modules in 1U footprint vs. 16-32 multimode modules!

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What does all this tell us?

• Data centers will move towards more optical interconnects as bandwidth requirements increaseinterconnects as bandwidth requirements increase

• Multimode solutions have key advantages over both i l d d l isingle-mode and copper solutions

• Fiber bandwidth will be a key parameter

• Lower power consumption will be a key driver

Li k i ti l d t b i i i d• Link insertion loss needs to be minimized

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Agenda


48

Why the higher speeds?y g p

Hi h d tiHigh speed connections simplify the network

More interconnects and switches required

Pictures presented by Adam Bechtel Yahoo! Chief Architect

and switches required

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Pictures presented by Adam Bechtel – Yahoo! Chief Architect IEEE 802.3 Plenary March 2007

Agenda


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Conclusions• Data centers are shifting from copper to fiber

C h li it d t i i di t– Copper has limited transmission distance– Fiber has much lower power consumption– Multimode fiber has key advantages over both copper and single-mode fiber

• OM3 and OM4 Multimode fiber is the media of choice for 40-100 Gb/s transmission rates in data centers– Only OM3 and OM4 are included in TIA-942-A, with OM4 recommended

• OM4 is well accepted and has been incorporated in system standards

• There will be a shift to parallel transmission over multimode fiber with MPO connections as network speeds exceed 10 Gb/s

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optical fiber and cabling standardsv3 - bicsi · pdf fileoptical fiber and cabling standards...

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