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IP Over DWDM : The Next Step
Building a data-centric network free of
bandwidth restrictions and spatial boundaries
Niall Robinson
Director - Photonics Systems Integration
Qtera Corporation
[email protected]
Globecom’99
Dec. 6th, 1999
Data drives capacity demand
Data already exceeds 50% of transatlantic capacity
300%
200%
100%
Data
Voice
0%
1999
2004
Data-centric network backbones need only two network elements
Terabit Routers / Switches
Survivable Photonic Transport Systems
Globecom’99
Dec. 6th, 1999
No geographic boundaries

Tx
Rx

Hundreds of Gigabits
Tx
Rx
l Router
l Router
l Router
l Router
Optical Interconnect is Necessary
 Electrical conversion, if any, defeats the
purpose of ultra long reach
Globecom’99
Dec. 6th, 1999
Long Distance Demand = Long Haul Transport
Meshed long-haul demand = Meshed long-haul transport
Requires very flexible optical add/drop
Restoration path distances are comparable
to primary paths
Old: Restoration-Path Length = 4.5 x Primary-Path Length
New: Restoration-Path Length = 1.5 x Primary-Path Length
Globecom’99
Dec. 6th, 1999
Long Haul Transport = Advanced Technologies
Use Fiber Non-Linearities
New Modulation Formats
Advanced Pulse Shapes
Non-linear amplification
Increased PMD tolerance
Advanced Optical Components
High Speed Electronics
Microwave Integrated Circuits
GaAs, SiGe
ASICs
DWDM Devices
Low Loss Switching
Routing components
Globecom’99
0.18 mm / 0.10 mm CMOS
Dec. 6th, 1999
Distance = Cheap Bandwidth
$5 $5
O T
T R
H I
E B
R S
$15
LINE
AMPS
$45
TERMINAL OPTICS
Typical Carrier Transport
Network - Capital
Expenditure Breakdown
Eliminate
O/E/O
Regeneration
Globecom’99
$30
REGENS
$1
O
T
H
E
R
$6
T
R
I
B
S
$15
LINE
AMPS
$36
TERMINAL
OPTICS
$2
R
E
G
E
N
S
Dec. 6th, 1999
The “10 for 10” List
Top ten reasons to use 10 Gb/s (OC-192) channels in the backbone
1
Maximize throughput per fiber
2
3
5
Lowest cost per bit
Optimize floor space
Less power
Fewer NEs: fewer spares, higher availability
6
Minimize router-to-transport interconnections
7
Direct 10 Gb/s Ethernet (10GE) connections and
OC192c services
Routers prefer a single 10 Gb/s port over 4x2.5 Gb/s
to optimize performance
4
8
9
10
Globecom’99
Non-linear 10 Gb/s implementation prepares the
network for 40 Gb/s channel rates
2.5 Gb/s is a dead-end solution, “bigger is better”
Dec. 6th, 1999
Purely Photonic Networking = Optical Internet
No Bandwidth Restrictions
No Spatial Boundaries
Rapid Bandwidth Provisioning
Fastest Restoration
Highest Reliability
Leased Wavelength Services
Simplicity, Scalability, and Elegance: PhotonPacketsTM
Routers + Photonics = Optical Internet
Globecom’99
Dec. 6th, 1999
IP Over DWDM : The Next Step
Building a data-centric network free of
bandwidth restrictions and spatial boundaries
Niall Robinson
Director - Photonics Systems Integration
Qtera Corporation
[email protected]
Globecom’99
Dec. 6th, 1999