ee 233. lightwave systems chapter 5. lightwave systemsee233/sp06/lectures/chap...74 78 82 86 90 94...

2/16/06 EE233. Prof Kaminow 1

EE 233. LIGHTWAVE

SYSTEMS

Chapter 5. Lightwave

Systems

Instructor:

Ivan P. Kaminow

SYSTEM ARCHITECTURES

POINT-TO-POINT

long haul

S.K. Korotky, JLT 22(3), 2004.

64 Tb/sNetwork

capacity

640 Gb/sPer-node

demand

100Nodes

Public Switched Telephone Network

•Circuit switched PSTN

•Internet backbone

•MESH NETWORK REDUNDANCY

Alcatel supply

participation

others

Americas-1/2

Columbus-2/3

SEA-ME-WE 2/3

Pacrim East

Pacrim West

Tasman-2

Jasuraus

Unisur

Cantat-3

GeminiChina-US

Northstar

SEA-ME-WE 3

Atlantis-2

Submarine Systems

RING REDUNDANCY

2/16/06 EE233. Prof Kaminow 7EXPRESS TRAFFIC v ADD-DROP

REGEN = 3R: reamp, reshape, retime

PERFORMANCE MONITORING

AMP = 1R: reamplify onlyNo OEO conversion

Optical Network Architectures and the Role of Large MEMS Switches

OpticalFabric

Transparent Network - Transparent Switch

OpticalFabric

ElectronicFabric

Opaque Network - Opaque Switch

OpticalFabric

Opaque Network - Transparent Switch

O/EO/E

Visions

Source: E. Goldstein (Tellium)TLI: Dec 2003 - 26

Wavelength-Division Multiplexing (WDM) Meeting Network Needs: Capacity, Scalability, & Cost

Single-wavelength TDM: OC-48 (40 Gb/s)

16 fibers 1 fiber 48 regenerators 1 optical amplifier

( ~80 wavelengths ~200 Gb/s )

16-wavelength WDM: 40 Gb/s

RPTRTERMTERM 1310

RPTRTERMTERM

OpticalAmplifier(1550 nm)

RPTRTERMTERM 1310

RPTRTERMTERM

OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48OC-48

60 wavelengths @ 40 Gb/s per ch ! 2.4 Tb/sTLI: Oct 2005- 7

(Traditional: Pre-WDM; 1996)

OC-48:(2.5 Gb/s)

Optical telecom technologies of the last 1/4

Century (Desurvire)Five generations of technology breakthroughs (3 decades)

10 Petabit.km/s= 1Terabit/s over 10,000km or 10Tbit/s over 1,000km

X10 every 4 years

74 78 82 86 90 94 98 02 04

1/1000

Capacity x

tance (b

FEC (>1999)

I = 0.8 µm MMF II =1.3µm SMF

III = 1.5µm DSFIV = coherent

V = EDFAWDM

DM, C+L

LOCAL ACCESS

P. GREEN

FTTH Technology OptionsFTTH Technology Options

Active outside plant -- higher OPEX?

Low-cost Ethernet components

High BW per sub + isolation

Switched IP video supported

BW/service uprgades are simple

PONWDM

Switch

Opt power splitter

155/622 Mb/s t1

155/622 Mbps / N

per sub

Ethernet

Active Switch/Mux

Ethernet

Switch

Opt ! Split

N x 1 Gbps

or 10 Gbps100 Mbs

per sub

Ethernet

(P2MP)

Ethernet

Switch

Opt pwr splitter

1 Gbps / N

per sub1 GbpsPassive outside plant

Low-cost Ethernet components

Switched IP video supported

Analog video overlay possible

BW upgrades more difficult

Passive outside plant

Low-volume, high-cost components

Low BW & SAR at each sub

Analog video overlay

BW upgrades are difficult

100 Mbps -

1+ GBps

per sub

Protocol independence

High BW per sub

Good subscriber isolation

Passive outside plant

Currently high cost

Nx100 Mbps -

1+ Gbps

Multi-

service

switch

Opt pwr splitter

1.2/2.4 Gbps / N

per sub

1.2 or 2.4 Gbps down,

155 - 2488 Mbps up Passive outside plant

High cost? multi-service, low volumes

Increased BW allows switched video

Analog video overlay

BW upgrades difficulttn

Power-Splitting PON: Broadband to Business,

Homes and Base Stations

• All clients (ONT’s or ONU’s) receive same downstream data from OLT

– bandwidth is shared over N clients -- N is the “split” -- typically 16:1 or 32:1

• Upstream channel is also shared using a distributed arbitration protocol

– upstream transmission scheduling is key factor in QoS

• Power-splitting PON’s often support analog video overlay on separate wavelength

– downstream BW for not used for broadcast video, packet-based STB’s not required

• Upgradable without changing fiber plant

PON OLT

Router

PSTNSwitch

Internet

MetroNetworks

Central Office

Residencesor Businesses

ONU/ONT

OptPowerSplit

Analog Video

Overlay

Single ordual fiber

Dedicated fiber(s) to each home or business

(same wavelengths)

Passive:no electronics,

no power

WDM OLT

FTTP Evolution: WDM PON

• Full, independent ! to each subscriber

• WDM OLT handles all !’s simultaneously -- !’s are split to subs by external passive router

• Subscriber ONU’s are configured to transmit/receive on on their assigned !

• Advantages: different bit rates/protocols/services for each sub, easy to upgrade sub without affecting others, goodsubscriber isolation, very high BW per sub possible

• Low-cost, innovative WDM technologies are key to cost-effective unlimited

• broadband services to the home!

Router

PSTNSwitch

Internet

OtherNetworks

WDMMux/

Central Office

Residencesor Businesses

Single ordual fiber

Dedicated wavelength & fiber(s) to each home or business

Passive:no electronics,

no power

Coax to HFC

" Increase transport capability

" Improve quality and reliability

! Challenge for linear lightwave

DWDM TRUNK

! DWDM transport for end-to-end transparency

! Route diversity for service protection

! Consolidate high-end terminals (CMTS)

Primary

SOURCES OF POWER

PENALTY

computer-aided

design

the end

ee 233. lightwave systems chapter 5. lightwave systemsee233/sp06/lectures/chap...74 78 82 86 90 94...

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