1. Green Transport Network and Core Components
Taewhan Yoo
Optical Internet Research Department
GP Korea 2010

2. Agenda Introduction ETRI R&D Activities Summary Network Issues
ETRI R&D Direction
ETRI R&D Activities
Packet Optic Integrated Network
High-speed Transmission
All-Optical Access
Summary

3. Network Issues Traffic Increase Energy Consumption Network Utility
Telepresence
eleworking
3D, UHD
Smart Work
Router
~1MW Power Consumption
Per 10Tb/s IP Router
100 Tb/s ~ 1Pb/s
Network Traffic by year 2020
Network Utility
IP Network Problem
Optical Network < 10Tb/s
Future Internet
ROADM
현재 인터넷
Network Security, Address and Naming Problem, QoS Limitation, Too Many Patch Solutions etc.
Currently 1Tb/s per Fiber,
Capacity of Optical Switch < 10Tb/s

4. (Cloud Computing Network)
Paradigm Shift
Evolution
New Directions
Business
UBcN Target
Network → Service
(Cloud Computing Network)
Cisco, IBM, Google,
Microsoft, Amazon
R&D
- IP converged network
- wireless/wireline convergence
~Year 2015
Green Network
Future Internet

5. Multilayered Network (Present) Packet-Optic Integrated Network (2012)
ETRI R&D Direction
Best Utilization
of Current Network
Technical Innovation
Multilayered Network (Present)
Packet-Optic Integrated Network (2012)
Optic Utility Network
(2020)
OTN
ROADM
Multilayer
integrated
Management
End-to-end Pcket IP
Cross
Layer
Control
Packet
Optic
Integrated
Switch
OTN
Optic Packet/Path Switch
End-to-end Pcket
Post IP
Service Resource
Network
Virtualization
Manager IP
Ethernet
SDH
ROADM
~1 Tb/s Traffic (IP-Quadruple Play Service, B2C),
Connectionless packet
Independent operation of each transport layer
Global connectivity only over IP network
1~10 Tb/s Traffic (telecowrking, Smart Work Service, B2B)
Connection-oriented Packet
Automatic operation of multilayer network (No click provisioning, high-reliability)
Open Transport Network
- >100 Tb/s Traffic (Full Virtual Work/Life Environment, N2U)
Optical Packet/Path Switch
End-to-end O-O-O networking
Service-resource-aware Network Control /Management
Optical network utility service:Virtualization,Dynamic
Green Network
-5-

6. Introduction ETRI R&D Activities Summary Network Issues
ETRI R&D Direction
ETRI R&D Activities
Packet Optic Integrated Network
High-speed Transmission
All-Optical Access
Summary

7. Packet-Optic Integrated Transport Network
POINTS
다계층통합제어서버
(MONCP) IP IP
IP Switch
Ethernet
Ethernet
Data Plane
PBB-TE
MPLS-TP
TDM channel
OTN channel
λ-path
Ethernet Switch
OTH
OTH
OTH Switch
Management
Interface
WDM
WDM
λ-Switch
패킷광 통합스위치
(POINTS)
100Gb/s per
λchannel
GMPLS
(control plane protocol)
Multi-layer Integrated Switch
End-to-end circuit-like packet transport
OAM and protection on multilayer network
Automatic Path Discovery and Configuration
Self-functions with GMPLS control plane
Low CAPEX, OPEX
Dynamic Bandwidth on Demand
High Performance Packet Transport
High reliable

8. Packet-Optic Integrated Network
Multilayer Control & Management Path Management Server
Path Computation Element Function
DWDM
Packet-Optics Integrated Switch
GMPLS control plane

9. Introduction ETRI R&D Activities Summary Network Issues
ETRI R&D Direction
ETRI R&D Activities
Packet Optic Integrated Network
High-speed Transmission
All-Optical Access
Summary

10. R&D on High-speed Transmission
Higher Speed
Ethernet & Transport
Network
DWDM
P-OTS
CESR
Network
망 적용
100GE
MAC
100G TX/RX
Mod./Demod.
100G
Framer
FEC
PHY
100GE Transceiver
100G 광트랜스폰더
100G OTN Transceiver
시스템 적용
System
Product
기술 이전
40GE/100GE
Transceiver
40G/100G
Transponder
40G/100G OTN
Transceiver
4x10G/4x25G
TOSA/ROSA Transceiver
40G/100G
Mapper/Framer/FEC
40G DPSK
100G DC-DQPSK
MAC/PHY
MAC/PHY
IPR확보
표준기술
핵심 원천 기술

11. ETRI Product Roadmap for High-speed OTRx
100G LH Transceiver &
100GBASE-LR4 CFP &
100G Transponder
100G
100G OTU4 Framer
& G.709 FEC & EFEC
IP Core
Single channel
300pin
C-band tunable
300pin
40GBASE-LR4 X2
40G
40G Transponder
v3.0( 40GE) &
40G OTU3 Framer
IP Core v3.0
40G STM-256 Transponder
40G STM-256 Framer IP Core
40G OTU3 Transponder v2.0 (STM-256)
40G OTU3 Framer IP Core v2.0
40G G.709 FEC & 40G EFEC IP Core
Single channel
300pin
8ch tunable
300pin
C-band tunable
300pin
10km XFP
40km XFP
DWDM
80km XFP
DWDM
80km SFP+
10G
10G OTU2 Framer IP Core
10G G.709 FEC & EFEC IP Core
2004
2005
2006
2007
2008
2009
2010
2011

12. 4 ch. CWDM OTRX for 40G/100G Ethernet
Optical power diagram of 40GBASE-LR4
LD (0)
LD (1)
LD (2)
LD (3)
CWDM MUX
PD (0)
PD (1)
PD (2)
PD (3)
CWDM DMUX
1271 nm
1291 nm
1311 nm
1331 nm
Average receive power:
2.3 ~ dBm (each lane)
2 m ~ 10 km
Channel insertion loss: 6.7 dB
MUX loss: 2.5 dB
DMUX loss: 2.5 dB
Average transmitter power:
2.3 ~ -7 dBm (each lane)
( ~ nm)
( ~ nm)
( ~ nm)
( ~ nm)
Optical power diagram of 100GBASE-LR4, ER4
Channel insertion loss:
- 6.3 dB (2 m ~ 10 km)
- 18 dB (2 m ~ 40 km)
Speed: Gb/s
MUX loss: 2.5 dB (min.)
DMUX loss: 2.5 dB (min.) nm nm nm nm
( ~ nm)
LD (0)
PD (0)
LD (1)
PD (1)
( ~ nm)
LAN-WDM MUX
LAN-WDM DMUX
LD (2)
PD (2)
( ~ nm)
LD (3)
PD (3)
( ~ nm)
Average transmitter power:
- LR4: 4.5 ~ -4.3 dBm (each lane)
- ER4: 2.9 ~ -2.9 dBm (each lane)
Average receive power:
- LR4: 4.5 ~ dBm (each lane)
- ER4: 4.5 ~ dBm (each lane)

13. 4 Ch. CWDM TOSA/ROSA Module
4 x 10G CWDM ROSA
Features
- Center wavelength: 1271, 1291, 1311, 1331 nm
- Flatness 0.1 dB): > 15 nm
- Sensitivity BER=10-12, ER=6dB): > -17 dBm
- IEEE802.3ba standards compliant
- Optical DMUX + PIN-PD + TIA
- Operates from 9.95 to 11.3 Gb/s rates
- Single 3.3V power supply
- Dimension: 25.6 x 13 x 8.5 mm3
Features
4 x 10G CWDM TOSA
- Center wavelength: 1271, 1291, 1311, 1331 nm
- Wavelength range: ±6.5 center wavelength
- Output power, each channel: > +2 dBm
- Extinction ratio: > 3.5 dB
- SMSR: > 30 dB
- IEEE802.3ba standards compliant
- DFB-LD + Optical MUX
- Operates from 9.95 to 11.3 Gb/s rates
- Dimension: 31.6 x 17 x 8.5 mm3

14. 300pin MSA 40Gb/s OTRx Features Block Diagram NRZ-OOK NRZ-DPSK
40 Gb/s optical transmitter/receiver with 16 parallel OIF-SFI compliant SER/DES I/O timing and deskew function
Built-in jitter clean-up circuit for reference clock input
300 pin multi-source agreement (MSA) compatible
I2C standard interface
Multi-rate from 39.8 to 43.6 Gb/s
Optical combination of transmitter and receiver:
- C-band full tunable channels transceiver, NRZ-OOK: C-band full tunable laser with ITU-T grid 50 GHz spacing, LiNbO3 external modulator, and PIN PD
- C-band full tunable channels transceiver, NRZ-DPSK: C-band full tunable laser with ITU-T grid 50 GHz spacing, LiNbO3 external modulator, Delay-interferometer and balanced PIN PD
Block Diagram
NRZ-OOK
NRZ-DPSK
Serializer
(16:1 MUX)
Optical
Modulator
(E/O)
Optical
Signal
Serializer
(16:1 MUX,
Precoder)
Optical
Modulator
(E/O)
Optical
Signal
300 pin Connector
Micro-processor
(Control)
Laser
(Optical Source)
300 pin Connector
Micro-processor
(Control)
Laser
(Optical Source)
Optical
Signal
Optical
Signal
De-serializer
(1:16 DeMUX)
Optical
Receiver
(O/E)
De-serializer
(1:16 DeMUX)
Optical
Receiver
(O/E)
Optical
Delay
Interferometer

15. 100Gb/s Modulation Format
Electrical Signal
Processing
Optical Signal
Processing
100Gbps
2 L N
L-Lamda
2-polarization
N-phase
M-level
X-polarization
Optical
Phase
Optical
Intensity
Signal
process
Lamda 1
Y-polarization
Optical
Phase
100Gb/s
Transceiver
M-ary QAM
N Phase Shift Key
NM circular polarization
OFDM
Lamda N
Coherent Detection
100Gb/s
Transceiver
Direct Detection

16. OTN OTRx Modulation Format Option
10G NRZ OOK
RZ-DPSK
RZ-DQPSK
(RZ-) 3ASK-DPSK
(RZ-)
DP-DQPSK
DC-DQPSK
DP-QPSK
OFDM
Application
Ref.
Core/
Metro
Core
Detection
method
Direct
Coherent
Symbol rate
11GBd
112GBd
56GBd
44GBd
28GBd
WDM grid (GHz) 50
200
100
OSNR(dB) (BER 1e-3) 12 17 18 23 19 16
GVD (ps/nm)
~1600 10 25
<40
>>500
PMD (ps)
1.5
2.5 3 5
>>10

17. ETRI Solution for 100Gb/s OTRx
Dual Carrier-Differential Quadrature Phase Shift Keying
dual carrier generator
DQPSK modulator #1
DQPSK modulator #2
signal combiner
carrier splitter
signal splitter
interferometer #1
interferometer #2
BPD
RF amplifier
It#1
Qt#1
It#2
Qt#2
Ir#1
Qr#1
Ir#2
Qr#2
Serializer
De-Serializer n 4
Input data
output data
optical output
optical input
<transmitter>
<receiver>
No ADC, No DSP, No polarization control

18. ETRI Product Roadmap for OTN Framer/FEC
100G Transponder v1.0
w/CFP & MSA-100GLH
100G
100G OTU4 Framer
IP Core
- Clients : 100GE
- Line : OTU4
100G G.709 FEC
IP Core
100G EFEC
IP Core
- Clients : 100GE
- Line : OTU4
- Clients : 100GE
- Line : OTU4
40G STM-256
Transponder
(STM-256,)
40G OTU3
Transponder
(STM-256,)
40G Muxponder
40G Transponder
v3.0 (40GE)
- Clients : 4xSTM-16
- Line : OTU3
Clients : STM-256
Line : STM-256
Clients : STM-256
Line : OTU3
- Clients : 40GE
- Line : OTU3
40G
40G OTU3 Framer
IP Core v1.0
STM-256 Framer
IP Core
40G OTU3 Framer
IP Core v2.0
40G OTU3 Framer
IP Core v3.0
40G G.709
FEC IP Core
40G EFEC IP Core
10G Line card for OTN-MSPP
(4xODU1)
10G
10G SFI-4.1
IP Core
10G OTU2 Framer
IP Core
10G G.709
FEC IP Core
10G EFEC IP Core
2004
2005
2006
2007
2008
2009
2010
2011

19. Introduction ETRI R&D Activities Summary Network Issues
ETRI R&D Direction
ETRI R&D Activities
Packet Optic Integrated Network
High-speed Transmission
All-Optical Access
Summary

20. All-Optic Open Access Network
1.25Gb/s, 2/5Gb/s, 10Gb/s x 128 channel DWDM-PON, 40~60 km
1.25Gb/s, 2/5Gb/s, 10Gb/s TDMA-PON (EPON, GPON), 20km
Open Access
1Mb/s ADSL (5km) 기업
50Mb/s VDSL (500meters)
Multiple
Service Providera
4G.
WLAN
데이터센터
WDM-PON
SP A
Lone-reach Access
Copper cable
coverage
(25%)
Copper Cable
coverage
(78%)
SP B
user
premise
SP C
u-City
일반가입자
Long-reach access network: up to 10Gb/s WDM/TDMA hybrid PON
Wireline and wireless unified access network infra
Green access network: sharing of access network infra

21. 1st Generation WDM-PON Downstream Upstream Development Status
Injection Seeding
Remodulation
remodulated RSOA
Innovator: ETRI
Commercialization
- G-photon(OTRx, ETRI Venture)
- Corecess(system)
- GW-PON., WDM/TDM hybrid PON
(Gwangju FTTH service)
Optical
Semiconductor
Downstream
Eraser
Upstream
Optical
Semiconductor
Spectrum sliced
light source(CW)
Injection Seeding
FP-LD injection locking
Innovator: KAIST/LG-Nortel
Commercialization
- LG-Nortel(system/OTRx)
- 100M/l WDM-PON(local)
- 1G/l WDM-PON(Yongin)
- Norway, Netherland, U.S.A.(‘09.)
Spectrum sliced
light source(CW)
Optical
Semiconductor
Modulated
optical signal
Upstream

22. Colorless Optical Transceiver for 1st Generation WDM-PON ONU
Transmitter optical/electrical specifications (-20°C <Tcase<70°C, Vcc=3.3V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Optical output power
Pout -3 -
dBm
Power variation
DPAVE
±0.5 dB
Channel spacing
100
GHz
Side mode suppression ratio
SMSR 25
Bit rate
1.25
Gb/s
Optical extinction ratio ER 6
Optical rise/fall time
tr/tf
260 ps
Total transmitter jitter (p-p)
JTXpp
0.5 UI
Receiver Specifications
Receiver optical/electrical specifications (-20°C <Tcase<70°C, Vcc=3.3V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Operating wavelength
1450 -
1620 nm
Rx sensitivity
Psens
-28
dBm
Rx overload
Pover -3

23. 2nd Generation WDM-PON Tunable Laser Transceiver Transmission BTB 40km

24. Deployment of 1st Generation WDM
Local Deployment Case
Hybrid PON service(‘09.03~)
Gwangju Metro: 300 users
1.25G x 16 λ/EPON
100M/l, Residential Service
(’05.~’08.)
150,000 users(nationwide)
GW-PON service(‘08.04~)
Gwangju Metro: 384users
1.25G x 16 λ (remod-RSOA)
GW-PON service(’07.,’09.)
Gyungki Province: 600 users
1.25G x 16 λ (injection FP-LD)
KT 신갈 국사 내 OLT RN

25. Summary
Building a safe, broadband, low-power consumption network is an urgent problem to be solved as ICT plays a key role to overcome several current issues of the global society
GMPLS based Packet-Optic Integrated Transport Network as a solution for the mid-term network issues: network automation, dynamic service and global connectivity of each network transport layer, safty and reliability through network isolation close to physical layer, better quality applicable to the control service apllication through network, low OPEX and CAPEX through integration
Optical path switched network should be pursued as a solution for 100Tb/s and low-enery consumption network: more advanced ROADM, new optical path switched network protocol
ETRI is interested in technology transfer and collaboration on core components including all sort of OTRx and OTN framer/FEC for 40Gb/s and 100Gb/s, OTRx for WDM-PON access network etc.