reconfigurable optical networks

7/27/2019 Reconfigurable Optical Networks

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Fujitsu Proprietary and Confidential All Rights Reserved, 2006 Fujitsu Network Communications

Simplicity and Automation inReconfigurable Optical Networks

Dr. Tom McDermott

Director, CTO Office, Fujitsu

[email protected]


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Why Reconfigurable Optical Networks for

Research and Education?

Distance and capacity

10G circuits across regional distances

100Gb/s to Tb/s of capacity

Protocol transparency

Ethernet, SONET, Fiber Channel Protocols

Lowest latency possible

Automation

Rapid circuit establishment and re-arrangement

UniversityUniversity

Research

Laboratory

Research

Laboratory

Antenna Site

Radio AstronomyHigh Speed Grid Computing

Uncompressed HD Video


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Optical Networking Evolution

WDM WDM

ROADM

ROADM ROADM

ROADM

ROADM

ROADM ROADM

ROADM

WDM

ROADM

ROADM

ROADM

0-300km

2.5G - 160G

0-600km

10G-400G

0-1000km

10G - 1.6T

Simplicity

Flexibility/

Distance

Capacity

Single Ring TopologiesReconfigurable wavelength assignment

Automatic power balancing

Operational ease equivalent to SONET ADMs

Arbitrary topologies

Dynamic wavelength assignment

Automatic power balancing

Universal amplifiers

Tunable components

xWDM access integration

Sub-wavelength integration

Simpler than SONET Operations

Point to Point topologies

Static wavelength assignment

Manual power adjustments

Heavy operational burden


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Optical Hubbing: Dynamic Networking

Across any Topology

Two-degree nodes

Multiple, small rings

Additional Fiber pairs required

Costly OEO between rings

Manual Fibering Between Rings

Non-integrated spurs

Single growable structure

Only 1 fiber pair between any two

sites No OEO between rings

Automated connectivity between

rings

Integrated spurs

ROADM

ROADM

ROADM

ROADM

ROADM

ROADM

ROADM

Mixed two degree and multi-degree nodes

1 pair2 pairs


5/15Fujitsu Proprietary and Confidential All Rights Reserved, 2006 Fujitsu Network Communications

Optical Hubbing Dynamic Assignment vs.

Manual Patching

Eliminates transponders

Eliminates NEs Single TID

10x reduction in f ibering

Automatic reconfiguration

Fibering is independent of

Wavelength routing

Wavelength assignment

Wavelength quantity

Allows multiple network

deployment scenarios

0

50100

150

200

250

300

350

Number of

Fibers to

Interconnect

Rings

2 3 4Number of Rings per Hub Site

Optical Hubbing Reduces Fibering

Optical Hub

Back to Back

DWDMDWDM

DWDM

DWDM

Back to Back

Optical Hubbing

ROADM

Fibering depends directly on

wavelength assignment

100s of jumpers for a large

system

Fibering done day one.

Wavelengths assigned

dynamically

10s of jumpers for a largesystem



Technology Breakthrough Wavelength

Selective Switch (WSS)

Single, integrated device

Replaces optical demultiplexer, multiplexer and optical switches

Removes unnecessary loss on thru path -> more nodes, more reach,

more savingsAny wavelength or any group of wavelengths to any/multiple ports

Enables optical hubbing and arbitrary network topologies

DEMUXMUXSwitch



Optical Fabric Technology Evolution

iPLC Wavelength Selective SwitchWaveblocker

N port DWDM device

Switches individualWavelengths between

DWDM ports

Colorless operation

Low through loss large

networks, many nodes

Can be mixed with 2-

degree fabrics on a

network basis

2 port DWDM device

Blocks individualwavelengths on

through path

Other components

perform wavelength

add/drop

Used in Broadcast and

Select Architectures

1xN WSS1xN WSSWaveBlockerWaveBlocker

2 port DWDM + N

wavelength port device Switches individual

wavelengths to single

client ports

Low through loss large

networks, many nodes

Complex cascading

required for multi-degree

solutions

Integrated PLCIntegrated PLC

West East

2-degree solution 2-degree solution

West East West East

Client ports NorthSouthClient

Multi-degree solution



Remote Touchless Service Activation

Revolutionizes Service Velocity

First-generation DWDM

Multiple site visits

Manual patching for through circuits

Manual power balancing

Limited service velocity

Touchless provisioning

Site visits at service edge only

Automated SONET & wavelength

provisioning

Operational simplicity Quantum leap in service velocity

1

2

3 4

5

6

7

8

910

11

1

Site visits only for

service card installation.

Fujitsu-pioneered technology

2

ROADM ROADM ROADM

ROADMROADM

In one small region, we would have to do 30,000

individual fiber jobs without using ROADMs,

transition to Ethernet becomes easier with a

ROADM infrastructure because we can reactquickly. G. Keith Cambron, SVP of AT&T labs at

OFC 2006.



Automatic Power Balancing

Maintains equal channel output power in face of wavelengthassignment/rearrangement/network failure

Enables software provisionable wavelength add/drop/thru and

reconfigureNo manual adjustments anywhere

0

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0.16

-2 0 2 4 6 8

time(ms)

relative

power(r.u.)

40ch 1ch

Conventional AGC

technology

New technology

Fujitsu

Technology

Fujitsupatented

technology

All wavelength power levels equal



Automating Control and Management

GMPLS enabled topology discovery Populates EMS database for assured inventory tracking

Verifies fiber connectivity

Craft user sees whole network easilyCircuit provisioning options

Point and click from EMS

Activated from EMS with explicit route signaled using GMPLSActivated from EMS, computed route using GMPLS

Circuit tracking with GMPLS

Network element layer understands end to end circuit view

Simplifies troubleshooting and alarm correlation

ROADMROADMROADM

ROADM



Summary

Optical Networking provides substantial value for R&Eapplications

Transparency, distance, capacity, automation

Optical networking surpasses the simplicity of SONETnetworking

Elimination of manual adjustments

Zero-lambda turnup

In-service wavelength additions to spans, rings

In-service addition of nodes to rings

In-service addition of rings and spurs to networks

Network automation uniquely enabled by

Optical Hubbing

Auto-adjusting amplifiers

Tunable components GMPLS control plane and EMS



FLASHWAVE 7500 ROADM



FLASHWAVE 7500 ROADMOne Platform - Three Powerful Configurations

FLASHWAVE 7500 core 40 channels WSS ROADM, 8-degree Hubbing

Best-in-Class transmission performance


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FLASHWAVE 7500 - Easy Operations

Throughout Ownership Lifecycle

Design and engineering Engineer the network once!

Grow subtended rings/arcs as

needed with no up-front investment

or back-end penalty

No manual adjustments

No hardware changeouts

No wavelength restrictions

Installation and turn-up

Cabling wizard

Auto in-service plug-in units

No manual attenuators to adjust Patented zero-lambda turn-up

Auto provisioning of network-side

through paths and optical

supervisory channel (OSC)

FLASHWAVE 7500 Easy Operations


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FLASHWAVE 7500 - Easy Operations

Throughout Ownership Lifecycle

Provisioning and reconfiguration No readjustment of Patented, Self-

Tuning amplifiers.

Add circuits like you do with

SONET Self-tuning amplifiers

Add/remove lambdas with no power

balancing or truck rolls

Add/remove nodes in-service

Add rings/arcs to hub nodes in

service

Telcordia flow-through

NETSMART 1500 EMS point and

click A-Z provisioning

GMPLS Control Plane Signaled

provisioning

Full-band tunable transponders

allow wavelength selection after

card installation

reconfigurable optical networks

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