The Next Generation of ROADM Devices

for Evolving Network Applications

Brandon Collings, Ph.D

Chief Technology Officer, Optical Communication Products

JDSU

2 Applegate Drive, Robbinsville, NJ 08691 USA

brandon.collings@jdsu.com ECOC 2011 Market Focus

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Next Generation Reconfigurable Optical Networks

– Applications

– Required Network Features and Performance

Node architecture to support these features and Why

– Route and Select Architecture

Describe the new set of Optical Components in development

– Twin 1x20 Wavelength Selectable Switch (WSS)

– Dual 8x16 Multicast Switch (MCS)

– Optical Channel Monitor (OCM)

– Optical Amplifier Array

– Hybrid Raman-EDFA

Agenda

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Photonic

A Flexible, Integrated and Self Aware Network

Integration of photonic through packet functionality

Enhanced photonic layer flexibility

Unified and aware control plane empowered to optimize traffic

Result: A more efficient and cost effective network

Transport

OTN

Packet

Network

Management

“Switch where you can, route where you must”

$$$

$$

$

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Next Gen Networks: Applications

Wavelength and Route flexibility – Requires Colorless, Directionless and Contentionless (CDC)

Automatic wavelength restoration

Load balancing as network and traffic evolves

Support for data rates beyond 100Gb/s

Fully automated link provisioning

Network

Management

TxRx

TxRx

TxRx

TxRx

TxRx

TxRx

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

T

R

Colorless: an add/drop port’s wavelength is provisionable

Directionless: an added/dropped channel is provisionable to/from any network direction

Contentionless: Allows multiple channels of the same wavelength within a single add/drop module

Colorless, Directionless and Contentionless

EAST

NORTH

WEST

T

R

T

R

CDC Mux/Demux CDC Mux/Demux

Mesh Node

T

R

T

R

Contentionless

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Requirements for Transmission Beyond 100Gb/s

6

3 Critical Requirements to “Future Proof” the Network

and Support Beyond 100Gb/s

Flexible Spectrum Channels

– Core and Mux/Demux

– Including a Flex Spectrum Optical Channel Monitor

400G 1 Tb/s

150GHz 50GHz 75GHz

100G

Higher WSS Isolation

– 16QAM requires 5 – 7dB greater isolation

– Target 45dB or higher

400Gb/s will require higher OSNR

– Need Raman amplification

– Need less ROADM node loss

QPSK 16QAM

QPSK 16QAM

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Traditional Broadcast and Select ROADM Node

1x20 W

SS

WE

ST

EA

ST

1x9

WS

S 1

x9

WS

S

1x9

splitte

r

AWG DEMUX AWG DEMUX AWG MUX AWG MUX

1x9

split

ter

WEST Colored Add/Drop EAST Colored Add/Drop

Connections for

up to 8 Degrees

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Broadcast and Select with Colorless, Directionless

1x20 W

SS

WE

ST

EA

ST

DEMUX MUX

DEMUX MUX

DEMUX MUX

DEMUX MUX

DEMUX MUX

1x9

split

ter

1x9

splitte

r

16 Colorless & Directionless Ports 32 Colorless & Directionless Ports 48 Colorless & Directionless Ports 80 Colorless & Directionless Ports

Connections for

up to 8 Degrees

NO MORE

PORTS

1x9

WS

S 1

x9

WS

S

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

High Port Count WSS and Broadcast and Select

1x20 W

SS

1x20 S

plit

ter

1x20 W

SS

1x20 S

plitte

r

DEMUX MUX

DEMUX MUX

DEMUX MUX

WE

ST

EA

ST

Connections for

up to 8 Degrees

DEMUX MUX

DEMUX MUX

Connections for 12+

Colorless &

Directionless Modules

12 modules of 16 ports = 192 add/drop ports 25% of full capacity 8-D

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

High Port Count WSS and Broadcast and Select

1x20 W

SS

1x20 S

plit

ter

1x20 W

SS

1x20 S

plitte

r

DEMUX MUX

DEMUX MUX

DEMUX MUX

1x9

WE

ST

EA

ST

Connections for

up to 8 Degrees

DEMUX MUX

DEMUX MUX

Connections for 12+

Colorless &

Directionless Modules

12 modules of 16 ports = 192 add/drop ports 25% of full capacity 8-D

Requirements on the 1x20 WSS

>45dB isolation

Compact form factor

<12.5 GHz granularity Flex Spectrum

Low loss and cost

All C-band channels sent to CDC demux

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

High Port Count WSS and Route and Select

1x20 W

SS

1x20 W

SS

DEMUX MUX

DEMUX MUX

DEMUX MUX

WE

ST

EA

ST

DEMUX MUX

DEMUX MUX

12 modules of 16 ports = 192 add/drop ports 25% of full capacity 8-D

1x20 W

SS

1x20 W

SS

ISO

ISO

Only dropped channels routed to CDC module

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Movement To Route and Select Approach

Requirements Why Broadcast &

Select Route & Select

WS

S

High Port Count (~20)

Support sufficient number of Colorless and Directionless modules

WSS device simultaneously

meeting all these

requirements is not currently

practical

Yes Pra

ctic

al D

evic

e

Higher Node Isolation (40-45dB)

More ports (+3dB) and higher density modulation (+5 to +7dB)

Yes

Flexible Spectrum (25GHz, 12.5GHz, other)

400Gb/s+ channels Yes

Faster Switching Dynamic wavelength restoration Yes

Compact Device Single/dual slot linecards Yes

No

de

Channel Grooming for add/drop

Enable Multicast Switch CDC No Yes

Lower Express Loss Higher OSNR for 100G, 400G No Yes

Industry Movement

1x20 W

SS

1x20 W

SS

Split

ter

Split

ter

CDCCDC CDCCDC CDCCDC

1x20 W

SS

1x20 W

SS

1x20 W

SS

1x20 W

SS

CDCCDC CDCCDC CDCCDC

Broadcast and Select Route and Select

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Next Generation Colorless, Directionless and

Contentionless (CDC) W

ES

T E

AS

T

1x

20

WS

S

1x

20

WS

S

1x20

WSS

1x20

WSS

1x

20

WS

S

1x

20

WS

S

NORTH

8x1 Selection

Switches

1x16 Power

Splitters

8x1 Selection

Switches

1x16 Power

Splitters

Rx Tx

Multicast

Switch Multicast

Switch

Optical Amplifier

Array

Optical Amplifier

Array

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

The JDSU Twin 1x20 WSS

1x20 WSS 1x20 WSS

2 WSS’s in a single package

Compact Package Two Independent 1x20 WSS’s in single 1x9

WSS sized package

High Isolation Better than 25dB per WSS for greater than

50dB total isolation

Improved Cascadability Wider cascaded bandwidth despite 2x WSS’s

per node

Low Loss 7dB loss resulting in 3dB less ROADM node

loss

Flex Spectrum Sub 12.5GHz granularity for True Channel

Flexibility

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

The JDSU Dual 8x16 Multicast Switch

Compact Package Two separate 8x16 MCS’s compact 20mm thick

compact package

High Port Count 16 add/drop ports providing 192 total port pairs

or 25% of total 8-node capacity

High Isolation >50dB isolation between same wavelengths

(Contentionless)

Minimal Loss Minimal excess loss lowers OA-array output

power requirements

Flex Spectrum

8 x 1

Selector

Switches

1x16

Power

Splitters

Rx

…

8x16 MCS

…8 x 1

Selector

Switches

1x16

Power

Splitters

Rx

…

8x16 MCS

…

Two 8x16 MCS’s in a single package

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Flex spectrum optical channel monitor

– Need high resolution filter to resolve tightly packed, “arbitrary” located channels

– High speed to support quick wavelength reconfiguring and power level stabilization

Optical amplifier array

– Required to compensate high splitting loss in MCS

– Output power typically lower and channel count is lower resulting in a “simpler” OA

• Compact packaging, clever pump usage

Hybrid-Raman EDFA

– Raman pump transmission fiber, EDFA at node input

– 4 to 6dB reduction in noise figure (depending upon fiber type and loss)

– Needed to support higher OSNR for 100G and higher linerates

Channel Monitoring and Amplification

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

The Value of Coherent Detection W

ES

T E

AS

T

1x

20

WS

S

1x

20

WS

S

1x20

WSS

1x20

WSS

1x

20

WS

S

1x

20

WS

S

NORTH

8x1 Selection

Switches

1x16 Power

Splitters

8x1 Selection

Switches

1x16 Power

Splitters

Rx Tx

Multicast

Switch Multicast

Switch

Optical Amplifier

Array

Optical Amplifier

Array

Drop-side WSS limits number of channels to CDC

Simplifies OA array

Enables coherent channel selection

Demux channel filters

Increases loss

Increases needed OA output power, cost, size and power dissipation

Tunable Filter

Array

Tunable Filter

Array

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION

Next Generation Network Requirements – Colorless, Directionless and Contentionless

– High resolution Flex Spectrum

– High isolation (5 – 7dB more than today)

– Lower noise amplification for higher OSNR

– Faster reconfiguration capability

New Suite of Optical Components Required – High port count WSS in Route and Select architecture

• Integration of two WSS’s in single compact package

– 8 x 16 Multicast Switch

• Integration of two MCC’s in single compact package

– Flex spectrum Optical Channel Monitor

– Hybrid Raman-EDFA for improved OSNR

– Optical amplifier array

Summary

Thank You!

Brandon Collings, Ph.D

Chief Technology Officer, Optical Communication Products

JDSU

2 Applegate Drive, Robbinsville, NJ 08691 USA

brandon.collings@jdsu.com ECOC 2011 Market Focus