1 State of the Industry – Optical Networking Mark E. Allen Infinera Corporation

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State of the Industry – Optical Networking

Mark E. Allen

Infinera Corporation

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Research and Education Requirements

• Scalable

• High Bandwidth

• Flexible

• Standards Based

• Low Acquisition Cost

• Low Ongoing Expenses (Op Ex)

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A short history …Legacy optical transport

Washington Dover Philadelphia Trenton Newark New York Hartford Providence Boston

OEO OEO OEO OEO OEO OEO OEO OEO OEO

Digital repeaters enabled PM’s & add/drop anywhere

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… … … … … … … … …





Capacity growth created unsustainable economics

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… … … … … … … …OEO OEO OEO OEO OEO

OEO OEO OEO OEO OEO

OEO OEO OEO OEO OEO

OEO OEO OEO OEO OEO

WDM reduces line costs, but needs OEO for add/drop

OEO

OEO

OEO

OEO

…

OEO

OEO

OEO

OEO

OEO

OEO

OEO

OEO

OEO

OEO

OEO

OEO

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… … … … … … … … …






Attenuators

Gain Flattening FiltersO-ADM Filters

Noise Rejection FiltersOptical MonitorsPMD CompensationRaman Pumps

Isolators

All-optical eliminates OEO, but increases complexity

Chromatic Dispersion

Dispersion Slope

PMD

2nd order PMD

Self-Phase Modulation

SBS

X-Phase ModulationFour-Wave Mixing

Multi-Path Interference

Gain Ripple

Gain Tilt

ASE Accumulation

Modulation Instability

Wavelength banding

Channel Flatness

OSNR MeasurementReturn power

Gain transient control

Channel equalization

Raman self-pumping

Many optical impairments…

…requires complex compensation

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The Catch…

• Network now managing waves not bits– The core optical network has evolved from Digital to Analog

• Forces compromise between…– lower network cost (minimize OEOs)…

– or number of markets served (OEO access)

• Complexity remains for network managers:– Complexity of planning & deployment

– Complex engineering, compensation and adjustment

– No sub- access to digital data

– Limited add/drop, multiplexing or grooming

– No digital performance monitoring or diagnostics

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Infinera’s Photonic Integrated Circuit (PIC) Innovation

100 Gb/s Transmit

100 Gb/s Receive

100Gb/s Transmit

100Gb/s Receive

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Infinera Differentiators

• Photonic Integrated Circuit-Eased Benefits– Higher Reliability

– Faster Scalability

– Faster Install and Turn-up

– Savings in Spares, Space, and Power

• Digital Optical Networks-Enabled Benefits– Digital, Solid-State Add/Drop

– Faster Time-to-Service

– Forecast Tolerance

– Consolidated Architectures

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Digital Networking Advantages:Infinera: Simple, Fast, Digital Add/Drop

• Add/drop 10G, 2.5G, or GigE using hot-pluggable TAM cards

• All-Digital– Implemented in solid state,

e.g. silicon

– No MEMS, tunable filters, or other optical devices involved

• Completely independent from optical line– Hitless

– No need to consider in span designs

– One TAM can drop traffic bound for different destinations0 Gb/s20 Gb/s60 Gb/s400 Gb/s

0% 100%

Percent Add/Drop

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Digital Networking Advantages:

Forecast Tolerance

• The forecasting challenge:– Predict the right amount of bandwidth…– The right service interfaces…– To the right locations…– At the right time

• Infinera supports– 100Gb/s line side blocks of bandwidth– Interchangeable Tributary Adapter Modules– Add/Drop any service to any location on any port

• Ultimate flexibility and forecast margin

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Summary: Photonic Integration Enables Digital Optical Networking

• Fundamentally lower cost and steeper cost curve

• Increased revenue potential with Add/Drop Anywhere

• Simpler Network Architectures

• Simpler Operations and Engineering

Digital OpticalNetworking

Documents

1 State of the Industry – Optical Networking Mark E. Allen Infinera Corporation