Post on 10-Oct-2014
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
Ing. Francisco Cano S. MScOptical Networking, Int’l Marketing Dept.
Transmission Product Manager
Huawei Technologies Co., Ltd.
WDM Wavelength
DivisionMultiplexing
HUAWEI TECHNOLOGIES CO., LTD. Page 2Huawei Confidential
CONTENIDO
?? FibraFibra ÓÓpticaptica
?? ParParáámetrosmetros queque afectanafectan la la seseññalal óópticaptica
?? Principios de WDMPrincipios de WDM
HUAWEI TECHNOLOGIES CO., LTD. Page 3Huawei Confidential
¿¿QUQUÉÉ ES LA FIBRA
ES LA FIBRA ÓÓPTICA?PTICA?
HUAWEI TECHNOLOGIES CO., LTD. Page 5Huawei Confidential
Causas de pérdidas ópticas
Pérdidas de Scatteringdebido a no uniformidad en la estructura
Pérdidas por absorción
Reflexión de Fressnel
Pérdidas debido a acoplamiento con dispositivo emisor de luz
Presión lateral externa
Pérdidas por microcurvaturas Pérdidas por
radiación causadas por curvaturas
Pérdidas por splicing
Pérdidas debido a acoplamiento con dispositivo receptor de luz
Reflexión de Fressnel
Pérdidas debido a ScatteringRayleigh
..
...
...
....
...
...
...
.
HUAWEI TECHNOLOGIES CO., LTD. Page 6Huawei Confidential
1ª ventana
Absorción producida por el ión hidroxilo, OH-
(‘Pico de agua’)
Luz visible Longitud de onda, λ (nm)
Ate
nu
ació
n (
dB
/Km
)
2,5
2,0
1,0
1,5
0,5
700 1000900800 1400130012001100 170016001500
Luz infrarroja
Atenuación de la fibra óptica
0
LáserCD-ROM
3,0
Fibra multimodo
Fibra monomodo
Pérdida debida a la dispersión intrínseca
2ª v Banda O
(Original)
3ª v Banda C (Conventional)
4ª v Banda L (Long)
Banda E
(Extended)
Banda S (Short)
HUAWEI TECHNOLOGIES CO., LTD. Page 7Huawei Confidential
Parámetros que afectan la señal en los sistemas WDM
l Chromatic Dispersion
l Polarization Mode Dispersion- PMD
l Nonlinear Effects in Fiber
l Kerr Effect
l Four-wave Mixing
HUAWEI TECHNOLOGIES CO., LTD. Page 9Huawei Confidential
2007
Evolution of transport network
Transmission technologies
1965 1998 2005
PtP WDM Static OADM Ring Optical SwitchingCopper Optical fiber
Centralized Management
Distributed Dynamic Control Plane
Management & Control Plane
SDH OTNPDH
20XX1984
Transport Hierarchy
HUAWEI TECHNOLOGIES CO., LTD. Page 10Huawei Confidential
What's WDM?
Free Way
Gas Station
Patrol Car
lWDM (Wavelength Division Multiplexing, multiplexación por división en longitudes de onda) consiste en enviar varias señales a diferentes longitudes de onda (diferentes λ) por una misma fibra (luz de varios ‘colores’)
HUAWEI TECHNOLOGIES CO., LTD. Page 11Huawei Confidential
WDM Concept
λ1
λ2?
λ1 λ2 λn
?λ
λn
SDH signal
IP package
ATM cells
l Different signals with specific wavelength are multiplexed into a
fiber for transmission.
HUAWEI TECHNOLOGIES CO., LTD. Page 12Huawei Confidential
l The overall structure of the WDM system of N-path wavelength:› Optical Transponder Unit (OTU)› Optical Multiplexer Unit / Optical De-multiplexer Unit (OMU/ODU) › Optical Amplifier (OA)› Supervisory Channel (OSC/ESC)
WDM System Structure
OTU
OTU
OTU
OM/OA
OA/OD
OTU
OTU
OTU
OSC OSCOSC
OLA
HUAWEI TECHNOLOGIES CO., LTD. Page 13Huawei Confidential
O/ERegeneration
Reshape
Retiming
Input
G.957 G.692
Output
3R
Optical Transponder Unit - OTU
E/O
ALSFEC (Optional)
…
HUAWEI TECHNOLOGIES CO., LTD. Page 14Huawei Confidential
Application of OA
Booster amplifier Line Amplifier Pre-amplifier
M40
OTU
OTU
M40
M40
OTU
OTU
M40
MUX
DMUX
OA OA OA
EDFA
RFA Raman Fiber Amplifier
Erbium Doped Fiber Amplifier
HUAWEI TECHNOLOGIES CO., LTD. Page 15Huawei Confidential
Longitudes de onda Banda C y Banda L
1529.55nm196.00THz
1560.61nm192.10THz
1529.16nm196.05THz
1560.20nm192.15THz
1570.42nm190.90THz
1603.17nm187.00THz
1570.82nm190.85THz
1603.57nm186.95THz
C-EVEN: 192.10THz-196.00THz(1529.55nm-1560.61nm)C-ODD: 192.15THz-196.05THz(1529.16nm-1560.20nm)L-EVEN: 187.00THz-190.90THz(1570.42nm-1603.17nm)L-ODD: 186.95THz-190.85THz(1570.82nm-1603.57nm)
C-band
L-band
l Banda C+ Banda L (160 canales)
l Banda C:192.1-196.0THz & 192.15-196.05THz, espaciamiento 100GHz.
l Banda L:187.0-190.9THz & 186.95-190.85THz, espaciamiento100GHz.
HUAWEI TECHNOLOGIES CO., LTD. Page 16Huawei Confidential
OTM
OTM
1.OTM
OADM2.OADM
3.OLA
4.REG REG
REG
Clases de Elementos de Red WDM
HUAWEI TECHNOLOGIES CO., LTD. Page 17Huawei Confidential
WDM Site Type and Networking
l Site Type :OTM, OADM(FOADM/ROADM) OLA,REG,OEQ
l Networking Topology : P2P, Chain, Ring, Mesh.
OADMOADMOADM
OADM OADM
OADM OADM
OTM OLA
80.0 km
FOADM
80.0 km
ROADM
100.0 km
OTM
200.0 km
HUAWEI TECHNOLOGIES CO., LTD. Page 18Huawei Confidential
ROADM
Wave Blocker PLC WSS
ROADM-Reconfigurable optical add/drop multiplexernDynamic wavelength managementnDynamic power control and remote monitoringnAdd services quickly
Any node, any port, any wavelength
HUAWEI TECHNOLOGIES CO., LTD. Page 19Huawei Confidential
Dynamic optical add/drop modules
ROADM is the foundation of an automated photonic network
λ1λ2λ3
λ4
ROADM is used to drop any wavelengths at any node.
ROADMλ1
λ2λ3
λ4
MROADM is used to interconnect rings or mesh nodes.
Multi-degree ROADM/WXC
› Any wavelength accessible in any node,
› No banding
› Any node to any node connection without re-design
› Integrated per channel equalization and monitoring
› Reduced regeneration using optical bypass
› Optical bypass and automated routing of wavelengths between nodes
HUAWEI TECHNOLOGIES CO., LTD. Page 20Huawei Confidential
OTNnTransparent transmission of client signalsnExcellent OAM nLarge-capacity groomingnProtection
OPSn
OTUk Optical Channel (OCh)
Optical Channel Carrier (OCC)OCC OCC OCC
Client
ODUk FECOH OCh Transport Unit (OTUk)
OPUkOH OCh Data Unit (ODUk)
ClientOH OCh Payload Unit (OPUk)
Wra
pper
Ass
ocia
ted
over
head
ODUk FECOH OCh Transport Unit (OTUk)
OPUkOH OCh Data Unit (ODUk)
ClientOH OCh Payload Unit (OPUk)
Wra
pper
Ass
ocia
ted
over
head
OPS0
Optical Physical Section
OTM Overhead Signal
Optical Supervisory Channel
OTM Overhead Signal
Optical Supervisory ChannelOSCOOS
OSC
OH
OH
OH
Non
-ass
ocia
ted
ove
rhea
d
OSCOOS
OSC
OH
OH
OH
Non
-ass
ocia
ted
ove
rhea
d
OMSn
OTSn
Optical Multiplex Section
Optical Transmission Section
OTM-nr.m: n? ? , ? OSC OTM-0.m
OTM-n.m: n? ? , OSC
OTN-Optical Transport NetworkOTN is composed of a set of Optical Network Elements connected by optical fibre links, able to provide functionality of transport, multiplexing, routing, management, supervision and survivability of optical channels carrying client signals.
HUAWEI TECHNOLOGIES CO., LTD. Page 21Huawei Confidential
The G709 defines Structures & mapping
3825
4080
OTUkOH
1 7 8 14 15 16 17 3824
1
2
3
4
OPU k Payload
OPU
kO
H
ODUk OH
Client Signalmapped in
OPUk PayloadOTUkFEC
n OTU is the highest electrical multiplexing level and includes a Forward Error Correction function. n ODU carriers an Optical Channel Payload Unit (OPU). n The client signals are mapped into the OPU, which is not processed at intermediate sites of OTN
The G709 Recommendation defines the interfaces of OTN :ü Overhead in support of multiwavelength optical networksü Frame structuresü Bit ratesü Formats for mapping client signals
HUAWEI TECHNOLOGIES CO., LTD. Page 22Huawei Confidential
Tunable TranspondersTunable Transponders
You need You need 4040 kinds of spare part.kinds of spare part.
You only need You only need 1 1 kind of spare part.kind of spare part.
??11
??4040
??22??11
??4040
??22
??11
??3232
??22??nnTunable
OTU
u Support dynamic wavelength adjustment covering the whole C band
with 50GHz channel spacing (80 wavelength tunable range).
u Support wavelength configuration and information inquiring by
software.
u Less inventory, and less Opex.
HUAWEI TECHNOLOGIES CO., LTD. Page 23Huawei Confidential
Automatic power equalization for all channelsSystemAPE
Optical Spectrum Analyzer: Monitor the spectrum parameters. Provide on-line monitoring for all the service channels
SystemOSA
Monitor the parameters of the fiber and detect the break pointFiberOTDR
Automatic lock the amplifier gain and insure the system performance during the adding or dropping channels
SystemAGC
Fiber
Fault point Function
Automatic accommodate the attenuation change of the fiberALC
Operation, Administration and Maintenance: Operation, Administration and Maintenance: 3A + OTDR + OSA3A + OTDR + OSA
?Add/drop
?Add/drop
Attenuation change
Attenuation change
Varied Gain/ attenuation for
each ?
Varied Gain/ attenuation for
each ?
How to solve these problems?
OTUOTU
Fiber cutFiber cut
HUAWEI TECHNOLOGIES CO., LTD. Page 24Huawei Confidential
ALC – Automatic Level Control
Attenuated outputAttenuated input
Normal output
OAU OAUOAUOAU
High line losses
OAU OAUOAUOAU
High line losses
Normal inputAttenuated input
Normal output
Without ALC Function
With ALC Function
Adjust the Power lever automatically considering followings:1) Lambda add/drop2) Fiber getting older
HUAWEI TECHNOLOGIES CO., LTD. Page 25Huawei Confidential
ØØ OSNCP (1+1 OTU)OSNCP (1+1 OTU)for endfor end--toto--end end protectionprotection
ØØ OMSP (1+1 OLP)OMSP (1+1 OLP)for line protectionfor line protection
ØØ 1:8 1:8 OChPOChPfor transponder for transponder protection. protection.
Protection Against Failures in System Protection Against Failures in System
HUAWEI TECHNOLOGIES CO., LTD. Page 26Huawei Confidential
Optical Protection( ?)Optical ProtectionOptical Protection(( ??))
• 1:8 End to end wavelength protection.• Substantial network wavelength resource saving.
IndustryIndustry--Unique Transponder Units ProtectionUnique Transponder Units Protection
HUAWEI TECHNOLOGIES CO., LTD. Page 27Huawei Confidential
llDualDual--feed Selectivefeed Selective--ReceiveReceive
llLocal decision, Fast switch.Local decision, Fast switch.
llProcessing and switching in OLP board.Processing and switching in OLP board.
llProtection against the fiber cable routeProtection against the fiber cable route’’s failure .s failure .
Optical Protection( ?)Optical ProtectionOptical Protection(( ??))
HUAWEI TECHNOLOGIES CO., LTD. Page 28Huawei Confidential
llDualDual--feed Selectivefeed Selective--ReceiveReceive
llLocal decision, Fast switch(<50 ms).Local decision, Fast switch(<50 ms).
ll1+1 transponder unit protection for certain important traffic is1+1 transponder unit protection for certain important traffic is also available.also available.
llProcessing and switching in received transponder units.Processing and switching in received transponder units.
1+1 OTU Protection
Optical Protection( ? )Optical ProtectionOptical Protection(( ?? ))
HUAWEI TECHNOLOGIES CO., LTD. Page 29Huawei Confidential
Ventajas del DWDMVentajas del DWDM
l Transparencia
l Transmisión de largo alcance
l Alta Capacidad
l Utiliza las fibras ópticas existentes
l Alta relación desempeño/costo
l Confiabilidad
l Facilidad de actualización
HUAWEI TECHNOLOGIES CO., LTD. Page 30Huawei Confidential
DWDM Backbone SolutionsHuawei OptiX
Optical Networking, Int’l Marketing Dept.
Huawei Technologies Co., Ltd.
2009? 3? 7? ? ? ?
?? National Backbone SolutionNational Backbone Solution
?? Intercity Backbone SolutionIntercity Backbone Solution
?? Intelligent Backbone SolutionIntelligent Backbone Solution
HUAWEI TECHNOLOGIES CO., LTD. Page 31Huawei Confidential
iManager T2000/T2100
Where does the WDM work in optical network?
Unified NetworkManagement Solution
OSN3500/2500
OptiX BWS1600G
OptiX 10G
OSN7500/3500OptiX Metro3100
OptiX 3800/6040
OptiX Metro1000
160 × 10G32×10G
32?SDH/ATM/IP
OptiX 6800/6100
OptiX OSN9500 OptiX BWS1600G
LongLong--Haul Backbone LayerHaul Backbone Layer
MAN Core LayerMAN Core Layer
Metro Access LayerMetro Access Layer
10G/2.5G
Metro Access LayerMetro Access LayerOSN2500/1500
HUAWEI TECHNOLOGIES CO., LTD. Page 32Huawei Confidential
LH DWDM
OptiX OSN 9500
Metro 1000
Metro 6040
Metro 500
OSN 3500
Metro 6100OptiX
BWS 1600G/400G
WDMFamily
IntelligentNG SDH
Family
CPEFamily
Metro WDM
OSN 2500 OSN 1500B
Metro 100OSN1500A
OSN7500
iManager T2000/T2100 NG WDM
OSN 6800 OSN 3800 OSN 900
Metro 1050
MWFamily RTN620 RTN610
Complete Optical Portfolio - OptiX
HUAWEI TECHNOLOGIES CO., LTD. Page 33Huawei Confidential
FF Trends of the Backbone Transport NetworkTrends of the Backbone Transport Network
FF National/Intercity DWDM Backbone SolutionNational/Intercity DWDM Backbone Solution
FF Intelligent Backbone SolutionIntelligent Backbone Solution
FF Applications Applications
HUAWEI TECHNOLOGIES CO., LTD. Page 34Huawei Confidential
The features of OptiX BWS 1600GThe features of OptiX BWS 1600G
• Ultra Capacity
• Ultra long haul transmission,
• Modular on-line upgrade: system upgrade is based on
the multiple of 400G module
• NMS supports the End-to-End wavelength management;
• Support one fiber bi-direction and two fiber bi-direction
transmission.
HUAWEI TECHNOLOGIES CO., LTD. Page 35Huawei Confidential
OptiXOptiX BWS 1600G: BWS 1600G: A Unified Platform for BackbonesA Unified Platform for Backbones
OptiXOptiX BWS1600GBWS1600G
617160λ@10G
3980λ@10G
2540λ@10G
RacksSubracksChannels
High integrationHigh integration
HUAWEI TECHNOLOGIES CO., LTD. Page 36Huawei Confidential
OTU
100GHZ spacing
40chs
Mux
OTU
OTU
25GHZ spacing
160chs
40chs
80chs
Mux
40chs
Mux
OTU
50GHZ spacing
40chs
80chs
Ø Highest density: 25GHz spacing 160λ @ 10G in C band with SuperDRZ
Ø1600km for 160×10G huge capacity
Ø Modular design, smooth expansion: 40à80à160chs
Ø Low initial investment, pay as grow
High Dense C-Band DWDM Solution
HUAWEI TECHNOLOGIES CO., LTD. Page 37Huawei Confidential
Extended C band solution
Extended C band 192chs
196.05THz 192.125THz
C band 160chs
192.05THz
Extended 32chs
191.275THz
ITL
OTU
ITL
ITL
OTU
OTU
OTU
100GHZ spacing
50GHZ spacing
25GHZ spacing
192chs
48chs
48chs
48chs
48chs
96chs
96chs
Provide an excellent solution with low initial
investment and up to 20% extension capacity in
extended C band40×10G system smoothness upgrade to 48×10G
system
80×10G system smoothness upgrade to 96×10G system
160×10G system smoothness upgrade to 192×10G
system
Support mixed C band and extended C band solutions
HUAWEI TECHNOLOGIES CO., LTD. Page 38Huawei Confidential
OptiX BWS 1600G System Overview
Network elementNetwork element• Optical Terminal Multiplexer• Optical Line Amplifier• Optical Add/Drop Multiplexer
Network function unitNetwork function unit• Optical Transponder Unit• Optical amplifier unit• MUX/DEMUX/OADM unit• Control unit• Optical supervisor unit• Maintenance unit
•Topology:Liner, chain, ring
•Protection1+ 1 Line/OTU protection1 : 8 OTU protection1+ 1 for timing unit
Topology/protectionTopology/protection
OLAOLA OLA
Simple unified network platform from common distance to ultra loSimple unified network platform from common distance to ultra longng--haul.haul.MUX/
DeMUXMUX
DeMUXOAOA
OTUOTU