Technology Day with JDSU - · PDF fileTechnology Day with JDSU OTN Background & Evolution. OTN Transport Structure client OH OH ... With migrating more and more to photonic networks

Peter Winterling, JDSU Deutschland

Technology Day with JDSU

OTN Background & Evolution

OTN Transport Structure

client

OH

OH

OH FEC

client

OPU

ODU

OPU

ODU

OTU

▶ OTN G.709OTN maps the SDH as a

payload. Biggest benefit is FEC to get longer reaches

Managing optical channels is an option not used very often up to now. But this is

a basic and important feature in AONs

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 4

Optical Channel

Optical Multiplex Section

Optical Transmission Section

λλλλ

OCh

OMS

OTS

Optical Channel Frame Structure

Client FECODU

OTUFAS1

2

3

4

1 7 8 4080382538241714


Overhead mapping information

payload typestuffing

TCMAPS

framing alignment

Client signalprotocol transparentbackward compatible Forward Error Correction

implementation of FEC coding e.g.

Reed-Solomon code

Motivation and Migration to OTN

▶ OTN starts in 2001. The strongest argument was the additional FEC which allows longer span.

▶ Management functionality was not an issue at that t ime. SDH standard made that all.

▶ With migrating more and more to photonic networks S DH can not manage network any longer �� OTN is needed

▶ Migration to OTN neworks wentvery slowly up to now. The barrier


▶ Migration to OTN neworks wentvery slowly up to now. The barrier of replacing SDH nodes with OTN was very high during telecom downturn time.

OTN Multiplexing needed

IEEE signals need a transport layer

▶ Next step is using OTN capability andmultiplexing all client signals into OTN as there isSDH, GigE, 10 GE, FibreChannel FC10,

▶ But there is still a need for integrate STM-64 carring Ethernet signals mapped into using GFP and VC as well.

▶ There is a variarity of rates in the 10 Gbps rangenow .


now .

G.975 … Submarine OTN10GE 10FC

ODU1 in OTU2 Multiplexing with SDH

OTU2 ODU2 OPU2 STM-64 VC4-64c

VC4-16c

VC4-4c

AU3/VC3

ODU1 STM16 VC4-16c

VC4-4c

async/sync

async/sync

async/sync async/sync

async/sync

10,7G

VC4

async/sync


VC4-4c

AU3/VC3

VC4

New Tab

VC4-16c

ODU1

STM-16

OTU2

Pointer Operations

Stuffing

Stuffing

Frequency Offset

ODU1/2 in 3 Multiplexing with SDH

OTU3 ODU3 OPU3 STM 256 VC4-256c

VC4-64c

VC4-16c

VC4

AU3/VC3

async/sync

async/sync async/sync async/sync

43G

VC4-4c

New Tab VC4-16c

ODU1

STM-16

OTU3

Pointer Operations

Stuffing

Stuffing

Frequency Offset


ODU2 STM-64 VC4-64c

VC4-16c

VC4

AU3/VC3

ODU1 STM-16

AU3/VC3

VC4-16c

VC4

async/sync

async/sync async/sync

async/sync

VC4-4c

VC4-4c

async/sync

OTN Multiplexing

Client Layer Signal(e.g. STM-16, ATM, GFP)

ODU1ODU1 OH

Alignm

ODU2

4x

OP

U1

OH

Client Layer Signal(e.g. STM-16)ODU1 OH

Alignm

OP

U1

OH


Alignm

OP

U1

OH

Client Layer Signal(e.g. STM-16)

Alignm

OP

U1

OH

Client Layer Signal

Alignm

OP

U1

OH

ODU2 OH

OP

U2

OH


OTU2 OTU2FEC

OP

U1

OH

(e.g. STM-16)ODU1 OH

OP

U1

OH

(e.g. STM-16)ODU1 OH

OP

U1

OH

Client Layer Signal(e.g. STM-16, ATM, GFP)ODU1 OH

OP

U1

OH

ODU2 OH

OP

U2

OH

OPU2 PayloadODU2 OH

Alignm

OP

U2

OH

OTU2OH

NOTE - The ODU1 floats in ¼ of the OPU2 Payload area. An ODU1 frame will cross multiple ODU2 frame boundaries.A complete ODU1 frame (15296 bytes) requires the bandwidth of (15296/3808 = ) 4.017 ODU2 frames. This is not illustrated.


Alignm

OP

U1

OH


Alignm

OP

U1

OH


Alignm

OP

U1

OH

Client Layer Signal(e.g. STM-16, ATM, GFP)ODU1 OH

Alignm

OP

U1

OH

The Look and Feel of ODU0

Client Layer SignalODU0ODU0 OH

ODU1

2x

OP

U0

OH

Client Layer Signal(GFP-T encapsulated 1GE)ODU1 OH

Alignm

OP

U0

OH

Client Layer Signal

Alignm

OP

U0

OH

ODU1 OH

OP

U1

OH


OP

U0

OH

Client Layer SignalODU0 OH

OP

U0

OH

ODU1 OH

OP

U1

OH

NOTE - The ODU0 floats in 1/2 of the OPU1 Payload area. An ODU0 frame will cross multipleODU1 frame boundaries. A complete ODU0 frame(15296 bytes) requires the bandwidth of one TribSlot in (15296/7616 = )2.008 ODU1 frames. This is not illustrated.

ODU1 OH

OP

U1

OH

TS1

TS2

TS1

TS2

TS1

TS2

TS1

TS2

ODU1with OPU1 Tributary

Slots TS1, TS2

NOTE - The OPU1 OH contains 1 column of justification control and opportunity overhead for each of the 2 tribuary slots in a 2-framemultiframe format. This is not illustrated.

New Challenges

� New OTN services emerging

– 1GE

– 10GE bit transparent

– 40GE, 100GE

– Synchronous Ethernet

� New switching levels emerging

– ODU0 (1G),

– ODU4 (100G)

– Other (1G5, 3G, 4G, 8G, …)

� New wavelengths emerging


– Fibre Channel bit rates (1G,

2G, 4.125G, 8.25G, 10.5G, ..)

– Video (1.5G, 3G)

– Sub-1G bit rates (SDH, FC,

Video)

� New wavelengths emerging

– 100G

� Increasing complexity

– Wavelength growth

– Service growth

ODUflex

More on OTU Multiplexing Hierarchy

ODU0

ODU1

ODU2

GE

2.5G SDH/SONET

10G SDH/SONET

GFP-F

GFP-T

OTU2

OTU1


OTU3ODU3

10GE LAN

40G SDH/SONET

ODU2e

40GE

100GE OTU4

GFP-F

ODU4

Transcoding

OTU1e

OTU2e

OTU3e1

OTU3e2

*3

*4ODU3e1

ODU3e2*4

100G Ethernet –an Evolution and Revolution

� Peter Winterling

100 GE / 40 GE …

… is an evolution …In terms of ethernet standard

… and a revolution

Because of- Parallel electrics & optics- Gearboxes- Data skew- OTN clients- optical transmission

IEEE 802.3ba Objectives

� Support full-duplex operation only� Preserve the 802.3 / Ethernet frame format utilizing the 802.3 MAC� Preserve minimum and maximum FrameSize of current 802.3 standard� Support a BER better than or equal to 10-12 at the MAC/PLS service interface� Provide appropriate support for OTN� Support a MAC data rate of 40 Gb/s� Provide Physical Layer specifications which support 40 Gb/s operation over:

– at least 10km on SMF– at least 100m on OM3 MMF


– at least 100m on OM3 MMF– at least 10m over a copper cable assembly– at least 1m over a backplane

� Support a MAC data rate of 100 Gb/s� Provide Physical Layer specifications which support 100 Gb/s operation over:

– at least 40km on SMF– at least 10km on SMF– at least 100m on OM3 MMF– at least 10m over a copper cable assembly

100GBASE-LR440GBASE-LR4SMF

100GBASE-SR1040GBASE-SR4MMF>100m on OM3

100GE40GEPMD• Ribbon Fiber

• 850nm• 4x10G

• CWDM 20nm

• Ribbon Fiber• 850nm• 10x10G

• LAN-WDM 4.5nm• 1310nm• 4λx25G

IEEE 802.3ba Objectives


100GBASE-ER4SMF>40km

SMF non-standard

100GBASE-LR440GBASE-LR4SMF>10km

• CWDM 20nm• 1310nm• 4λx10G

• 8nm channels• 1550nm• 10λx10G

• LAN-WDM 4.5nm• 1310nm• 4λx25G

�Bild 1: Standardisierung für 100 GbE und 40 GbE

Adaptation OPU4

ODU4

20 Logical Lanes

G.709 Appendix VII:Adaptation of parallel

Adaptation Adaptation

Other ClientsMAC

PCS

20 Virtual Lanes

20 Virtual Lanes of 64B/66B block

Client Application

CGMII

100 GbE / OTN Interworking


Adaptation of parallel64B/66B encoded clients

OTU4

Serial TRX

Striping

Gearbox

PMD

G.709 Annex CAdaptation of OTU3 and OTU4 over Multichannel

Parallel Interfaces

10*11.2G CAUI

Long HaulSerial

20 Logical Lanes

IrDIParallel I/F

of 64B/66B block encoded data over N Parallel Physical Lanes

PMD

10*10G CAUI

4/10 Phys. Lanes

OTN Transport Structure acc. ITU G.709


The ONT for 40/100GE & OTU3/4 troubleshooting

ONT-503 with a 2-slot module 100 GE including CFP 10x

10Gbps.OTN framer need a second 1-

slot module


CFP module – Block diagram for Gearbox CFP


For 100G M=10 & N=410 electrical lanes running at 10G4 optical lanes running at 25GREFCLK is electrical lane speed/16 ~644 MHz

Client-/Line interface

40/4

3Gbp

s

Line interfaceClient interface

► CFP, QSFP► Multi Lane Distribution► LAN 41.25 Gbps (40GE)► 4 λ with 10.3125 Gbps

► OTU3, OTU3e1, OTU3e2► Enhanced FEC► Higher Modulation formats, as ODB, DPSK, DQPSK and PM-QPSK


40/4

3Gbp

s10

0/11

2 G

bps

► 4 λ with 10.3125 Gbps► OTL 3.4

► OTU4► Enhanced FEC► Higher Modulation formats, e.g. PM-QPSK► Adaptive PMD compensation► CD compensation with FBG► Coherent Detection

DPSK, DQPSK and PM-QPSK► Adaptive PMD compensation► CD compensation with FBG► Coherent Detection

► CFP► Multi Lane Distribution, MLD► 100GE, OTL4.4, OTL4.10► 4 λ with 25/28 Gbps

Per Lane & λ Virtual BERT

� ONT Complete BERT Capabilities:– Per-Lambda mappings & BERT. Challenges addressed:

• With 4λ*25G optics, lane to λ mapping is dynamically assigned at system turn up

• Can manually assign lane mapping & test BERT on ONT

– BERT per virtual lane feature (i.e. 20)• Each physical lane has 2 VL at PCS/layer 1; for PCS layer testing.

– BERT per physical lane feature (i.e. 10)• For signal integrity (0 & 1 counts), crosstalk


�Per physical �lane View:

Per λ View:

Line Side Challenges

Goal:More bandwidth/capacity over installedinfrastructure(with existing fibers, EDFAs, DCMs,

Solution:Higher data rates andimproved spectral efficiency

Upgrading Systems to 40 Gb/s or even 100 Gb/sFaces Serious Transport and Transmission Issues


Transmission

Transport

EDFAs, DCMs, and OADMs)

Transport Impediments:Optical Noise (OSNR)Bandwidth NarrowingDispersion (CD, PMD)Nonlinearities (SPM, XPM)

Enabling Technologies:Advanced FEC CodesNew Modulation FormatsAdaptive Dispersion CompensationCoherent Detection / Electronic DSP

Modulation Formats for 40 Gb/s DWDM Systems

� Binary modulation formats (1 bit/symbol):

– Optical duobinary /PSBT

– NRZ- / RZ-DPSK(“bipolar” ASK)

Tx Rx

+1−1

Mach-ZehnderModulator

Delayed Self-

Q

I


� Quaternary (2 bits/symbol):

– NRZ- / RZ-DQPSK

� Polarization-multiplexed QPSK (4 bits/symbol):– Dual-Polarization QPSK

| Pol

|| Pol

Delayed Self-Homodyne Det.

Test and Measurement

Simple Structure

►Simple Menu structure helps ‘peel the onion’ without tears!


First get the physical layer up and running. Applications help the

critical photonics integration phase

PCS layer, alarms, errors and new issues like VL skew quickly validated

with PCS applications

MAC & IP. Everything from simple connectivity tests through to complex QoS over 256 flows!

▶ Validation of end to end lane mapping on PCS layer VLs

Clear indication of how each VL is mapped at the

Lane rotator allows real time VL lane re-assignment

PCS Lane Rotator


each VL is mapped at the receiver

Naturally parameters such as skew can be adjusted as well!

� Fully test lane skew (static + dynamic)– PCS alignment markers used to correct lane skew at Rx. ONT

provides:• Injection/measurement of static & dynamic skew to validate PCS

receiver and gearbox (in 4λ*25G transponders)

CFP Verification: Gearbox & Skew Testing


100G – Where in my network?

Router � Router via 100GE

Router � DWDM via Inter-domain OTU4 (or 100GE)

CFP optics 4 x 25G

RouterRouter Router � switch via 40GE

Likely 4x10G CFP first. Also CXP/QSFP

CFP optics 4 x 28G

Switch

CFP optics 4 x 25G


100G Line side Modulation & Strong FEC

DWDM equipmentCloud computing etc

Legacy interfaces

SONET, 10G

40G serial etc

High density, short reach 40G

& 100G

Overview on 256 streams

Packet Jitter per Stream

Deep Ethernet Analysis with ONT-503


Latency per Stream

Statistiv per Stream

ONT-5xx 40G & 100G Solutions

40G ModuleOTN/SDH/SONET

Wrapper/Dewrapper

300-pin MSA (serial)

ODU Muxing

OTU3/OTU3e1

Jitter/Wander/Electrical

OC-768/STM-256

Future: OIF MSA; QSFP

40GE & 100GE

CFP Optics

OTU4/OTL4.10

OTU3/OTL3.4

CFP Testing/Physical

100G Module40GE/100GE/OTL


ONT-5xx

Wrapper/Dewrapper

Through Mode

40/43G with Jitter100G Module (40GE/100GE)

CFP Testing/Physical

Eth/IPv4/IPv6 QoS

� Dedicated for 40/43G field installation and maintenance

� Testing applications for� OC-768/ STM-256 � OTU-3 (43G) bulk, with SONET/SDH or

ODU-1/2 client� 40/43G unframed

40/43G solution in the MTS- 8000

10 cm<8 kg


� Field portable and rugged design (~ 18lbs / 8kg)

� Platform and GUI based on market leader TB / MTS-8000

� Based on JDSU proven 40/43G technology

� Terminate and Through Mode

Summary

� 100GigE – Evolutionary on the Ethernet and higher layers

• Same principles as on lower Ethernet rates

– Revolutionary on the physical layer• Introduction of parallel optics into the network• PCS layer with 20 virtual lanes


� JDSU provides a well-rounded 100G portfolio– ONT for layer 1-2-3 testing– MAP for optical stimulus/response– MTS/TBERD-8000 for CD/PMD

Poster

World of 100 Gb/s


OTN acc. ITU G.709

Documents

Technology Day with JDSU - · PDF fileTechnology Day with JDSU OTN Background & Evolution. OTN Transport Structure client OH OH ... With migrating more and more to photonic networks