Transcript Document

BASIC OVERVIEW
OF AN
ALL
OPTICAL
INTERNET
7/18/2015
Arun Nirmal
1
Introduction

Presentation on overview of
Optical Internet, basic issues and
Characteristics and Future Scope
by
Arun Nirmal
Dept of EE
7/18/2015
Arun Nirmal
2
Vision of New Internet
New Internet
much
IP address
space
Enhanced
Internet
Wealthy
Internet
Industry
New
Internet
Business
Improved
User
Environment
Next Generation Internet Infrastructure
Optical Internet
Bandwidth
Adoption of IPv6
Home Networking
QoS
IP addresses
Security
7/18/2015
Current Internet
Arun Nirmal
Routing
Wireless/Wired
Interworking
3
Topics of Discussion




Basic Definition of Optical Internet
Purpose of Optical Internet
Technologies and Methods of building optical
Internet
Future Scope
7/18/2015
Arun Nirmal
4
What is an Optical Internet?

Any Internet network where the network link layer
connections are "dedicated" wavelengths on an Wave
Division Multiplexed (WDM) optical fiber directly
connected to a high performance network router

The high performance network router replaces
traditional ATM and SONET/SDH switching

statistical multiplexing device that controls wavelength
access, switching, routing and protection.
7/18/2015
Arun Nirmal
5
Why build an optical Internet




Considerable Debate in Telecom Industry for best
technology for transporting IP services.
So IP over ATM and optical IP services will exist in
parallel to meet the spectrum of customer requirements
for IP networking.
This is true with the advent high density WDM systems
which can support a multitude of transport service
delivery mechanisms from traditional SONET/SDH
services to the new optical ATM and IP architectures.
Internet traffic will continue to grow exponentially.
Therefore, for the bulk of traffic all that is required is a
"best efforts" or an "ensured" delivery service then high
volume IP pipes would seem to be the most appropriate
technology.
7/18/2015
Arun Nirmal
6
MOREOVER…
 Huge demand for network solutions that provide
guaranteed qualities of service and well managed traffic
engineering solutions, particularly for mission critical
applications.
 Efficiencies and cost savings can be gained from
single layer management of survivability.
 For accommodating the huge anticipated capacity
requirements of the Internet, an Optical Internet would
be more efficient.
With high density WDM neither the "bell heads" or
the "net heads" are losers in the protocol wars. The
winner is the customer in terms of increased choice in
network offerings, services and cost savings.
7/18/2015
Arun Nirmal
7
Features of All Optical Internet





High Density Wave Division Multiplexing
High Bandwidth
Higher Speed
Fast connectivity
Bit-rate independence with any service or port
connectivity up to 10Gb/s
7/18/2015
Arun Nirmal
8
DESIGN COMPONENTS OF OPTICAL
NETWORKING








Fiber types
Lasers
Optical Couplers
Electrical repeaters
Transponders
Optical Add Drop Mux
Cross Connects and Switches
WDM Standards and Interoperability
7/18/2015
Arun Nirmal
9
COMPONENTS - OPTICAL ADD/DROP
MULTIPLEXERS
7/18/2015
Arun Nirmal
10
COMPONENTS – CROSS CONNECTS
DWDM out
DWDM in
100101
Digital
Control
O
Purely Photonic
Wavelength Cross-connect
7/18/2015
Arun Nirmal
11
COMPONENTS - OPTICAL COUPLERS
7/18/2015
Arun Nirmal
12
BASIC ARCHITECTURE



Principle designing feature is Use of High
Density WDM to deliver individual wavelengths
to high performance routers
Wavelengths are coupled and re-coupled from
the fiber using WDM Coupler – optical Add–
drop Mux
Output and input of the WDM coupler are
simple fiber connectors which direct data on the
original wavelength to either the traditional
SONET or high performance router
7/18/2015
Arun Nirmal
13
Optical IP Municipal Area Network
Municipal area WDM Network products support
up to 64 WDM channels up to 80 Km without a
repeater
They provide Complete data Transparency
Used to deliver Analog signals such as videos, as
well as data on the individual wavelengths
Can provide 150 point to point Connections.
Each channel can support a dedicated Gigabit
Ethernet.
7/18/2015
Arun Nirmal
14
Conventional MANs
Internet
backbone
POP
ADM
Add/Drop
Multiplexer
ADM
Campus
network
Access
network
Internet
backbone
POP = Point of Presence
ADM
POP
ADM
Campus
network
ADM
Local
network
ADM
Local
network
Access
network
 Point to point SONET technology (WDM + TDM):
 Fixed bandwidth circuits to the POP
 Centralized switching at POP:
 Logical topology is a star.
7/18/2015
Arun Nirmal
15
CURRENT ISSUES WITH MAN



MAN’s are a Vital Link between WAN and LAN
The Problems of Conventional MANs are
scalability
Ability to handle increasing data traffic (as
opposed to voice);
 Fast provisioning infrastructure;
 Handling future traffic trends such as increasing
intra-MAN traffic.

7/18/2015
Arun Nirmal
16
SAMPLE MODEL OF OPTICAL INTERNET CANADA
7/18/2015
Arun Nirmal
17
FUTURE OF OPTICAL
NETWORKS




Optical-layer technology will increase network capacity,
allowing network providers to transport more than 40
times the traffic on the same fiber infrastructure.
ultimately lead to lower prices, and competition in the
local exchange
Consumers will have access to new high-bandwidth
services made possible by the increased capacity
afforded by the optical layer.
Services like videoconferencing to the desktop (or home),
electronic commerce, and high-speed video imaging, will
become commonplace
7/18/2015
Arun Nirmal
18
Conclusion




Their capacity is doubling annually toward a terabit per
second per fiber.
Optical Internet networks will provide for simple to manage,
high bandwidth services for internet exchanges and local
loop facilities.
WDM Networks supporting an Optical Internet and Other
services will be a major driver for future network
architectures.
This will eventually reduce the cost and complexity of future
internet delivery
7/18/2015
Arun Nirmal
19
GLOSSARY
ATM
asynchronous transfer mode
DWDM
dense wavelength division multiplexing
ETDM
electronic time division multiplexing
MAN
metropolitan-area network
OADM
optical add/drop multiplexer
OSNR
optical signal-to-noise ratio
OTDM
optical time division multiplexing
OXC
optical cross-connect
SONET
synchronous optical network
7/18/2015
Arun Nirmal
20
References
his.etri.re.kr/share/optical.html
www.cttcgroup.com/opticalinternet.html
www.nortelnetworks.com
www.mfn.com
www.eurescom.de
www.opticalinternet.com
www.cox.com
oirc.icu.ac.kr
www.sciam.com
7/18/2015
Arun Nirmal
21