Introduction to Optical Technology and Components

Transcription

1 1 Introduction to Optical Technology and Components Session 2

2 Agenda Market Trends Foundation of the Future Optical Transport Optical Internetworking 3 IP Services Bandwidth Requirements Increasing number of users Number of access ports Higher speeds DS3, OC-3, OC-12 Resulting backbone capacity Most inter-city links are 2 x 2.5 Gbps today with low average utilization Backbone bandwidth doubling every six to nine months Terabits Total Access Capacity per PoP Year 80 2 x 2.5 Gbps Dec Terabit System June x 10 Gbps 320 Dec x 10 Gbps June 2001 Dec June 2002 OC12 OC3 DS3 T Dec

3 Modern Lightwave Eras Capacity (Gb/s) Research Systems Fiber Deployment Digitization Commercial Systems SONET rings and DWDM linear systems Wavelength Switching Optical Internetworking Year 5 Market Trends Fiber everywhere Decreasing costs of bandwidth Optical infrastructure New services 6

4 SP Market Conditions Service provider market is highly competitive and dynamic Service differentiation and cost of delivering the services key to survival and growth Requirements for highly scalable, cost-effective, flexible network 7 Service Provider Challenges Lengthy provisioning intervals Overlays of technology for multiple services Building IP networks on voiceoptimized platforms IP ATM SDH Fibre TDM Only two types of restoration all ($) or none High Capital Costs and Operations Expense 8

5 Optical Internetworking Traditional Model Optical Internetworking IP ATM/ FR SONET /SDH Lower equipment cost Lower operational cost Simplified architecture Scalable network capacity IP Router Optical IP Services Big Optical Pipe Optical 9 Agenda Market Trends Foundation of the Future Optical Transport Optical Internetworking 10

6 Foundation of the Future Internet Scale Carrier Class Optical Networks Managing the explosive growth Building highly reliable networks Utilizing advances in technology Service enabling next generation networks 11 Service Enabling Infrastructure IP Services D W D M Wavelength Routing Integrated TDM Dark Fiber Fiber 12

7 Optical Internetworking Cisco End-to-End Service and Transport Network Service Aggregation Leased Line Cable and Wireless DSL OC192 OC48 DWDM Wavelength Routing IP Enabled Optical Core Enterprise ISP Carrier Service Delivery 13 Agenda Market Trends Foundation of the Future Optical Transport Optical Internetworking 14

8 Long Haul Architecture Optical Core Network PoS with OC-48/ OC-192 Regenerator Regenerator Wavelength Routing DWDM 15 Regenerator Extend LR interface distance OC-48/STM16 Managed as IP device (IP/DCC) 3R: re-amplify, re-shape, re-time Small form factor 16

9 TDM and DWDM Comparison TDM (SONET/SDH) Takes sync and async signals and multiplexes them to a single higher optical bit rate E/O or O/E/O conversion Single wavelength per fiber Multiple channels per fiber DS-1 DS-3 OC-1 OC-3 OC-12 OC-48 SONET ADM Fiber DWDM Takes multiple optical signals and multiplexes onto a single fiber No signal format conversion Multiple wavelengths per fiber Multiple channels per fiber OC-12c OC-48c OC-192c DWDM OADM Fiber 17 DWDM Tremendous scalability Economics Long haul fiber exhaust Metro fast provisioning Line and Network Speeds (Gbit/s) 1000 Optical (DWDM) 100 TDM 10 1 Routers/Switches Year 18

10 Long-Haul DWDM Network Architecture λ 1 = 1535nm λ 1 = 1535nm Tx 1543nm l 1, l.., l.., l nm Rx Tx 1550nm 1550nm Rx Tx 1557nm 1557nm Rx Tx Transmit Transponders Multiplexer Amplifiers Distance up to 500 km Rx Multiplexer Receive Transponders 19 Cisco ONS WaveMux Hyper-dense wave division multiplexing system Flexible multiband architecture Compatible with both OC-48 and OC-192 signals Open architecture accommodates a variety of SONET equipment, IP routers and ATM switches 20

11 OADM Operation OA Coupler Bandpass Filter Coupler OA l Filter l Filter WDM Receiver WDM Receiver WDM Receiver WDM Receiver Drop WDM Transmitter WDM Transmitter WDM Transmitter WDM Transmitter Add OADMs are really extensions to OAs OADMs provide drop and continue functionality Currently only static configurations available 21 Next Generation Optical Protection Switch Matrix Protection controlled by large cross connects on tributary side of DWDM Protection migrates from fiber to l level Line, ring, and mesh restoration options 22

12 Cisco ONS Wavelength Router Intelligent wavelength connectivity at DWDM junctions Automated provisioning and mesh restoration at SONET speeds OC-48 and higher speeds 23 Short Haul Architecture Long-Haul Network Dynamic Packet Transport ADM Supercharged SONET TDM TDM ADM TDM Traditional SONET/SDH Ring ADM 24

13 Integration Reducing the layers Integrating functionality Flexibility in network design 25 ONS Interconnected 2F-BLSR and 2F-UPSR Ring Applications OC-48 SONET 2F-BLSR/UPSR Ring OC-12/3 SONET 2F-UPSR Ring Applications Point to point/linear ADM Aggregation Digital cross connect SONET rings OC-12/3 SONET 2F-UPSR Ring 26

14 Dynamic Packet Transport Maximize bandwidth efficiency Bandwidth consumed only on traversed segment Multiple nodes transmit concurrently Fairness via SRP-fa Self-healing through IPS Minimize provisioning and configuration Cisco 72XX Cisco Cisco 7223 DPT Ring Cisco 75XX Cisco 7246 Cisco 75XX Cisco New Technology Developments Very Short Reach (VSR) optics Multiprotocol lambda switching 10GigE Optical wavelength conversion Tunable lasers Fast Layer 3 restoration 28

15 The Problem POP Interconnect Transport Network DWDM Optical Cross-Connect OC-192 Intra- Office Links Aggregation Switch/Routers (OC-3, OC-12,GE) > 50% of high speed interfaces are routerto-router > 75% less than 100m Current OC-192 serial interfaces optimized for longer reaches 29 OC-192 VSR Architecture 12-Channel VCSEL Array OC-192 Framer 16x 622M Converter IC 12x 1.244G Tx Module Rx Module 12-Channel PIN Diode Array 12 fiber ribbon 12 Tx + 12 Rx 1.25G 10 data channels + 2 spare channels Channel protection (optional) Error correction (optional) OIF framer interface (LVDS) Based on 850nm VCSEL optics and 1.25G CMOS transceivers Link length up to 300m 30

16 OC-192 Size Comparisons OC-192 VSR ( < 300m) OC-192 2nd Gen ( 2/40/80km) OC-192 1st Gen (2/40km) 31 Agenda Market Trends Foundation of the Future Optical Transport Optical Internetworking 32

17 From Optics to Services Cisco GSR from optics to L3 services Data optimized platform Services enabling feature set 33 Cisco Series WW Internet proven deployment Carrier-class architecture Premier IP-routing software Leading interface breadth 34

18 IP Services Value added IP services over optimized infrastructure VoIP Real-time audio/video distribution VPNs New business models 35 Customer Optical Architectures Internet Scale Carrier Class Optical Networks IP Router Mesh ATM Mesh SONET/SDH Rings: Add/Drop Multiplexers, Digital Cross Connects Wavelength Routing, DWDM 36

19 Summary Internet Scale Carrier Class Optical Networks Scalability and cost-effectiveness Technology innovation and integration Service enabling infrastructures 37 Other Optical Talks Session 3002 Deployment and Design Issues for IP over Optical Networks Session 3003 Deploying DWDM for Delivery of Lambda-Based Networks Session 3005 Deploying Services over a Optical Internetworking Infrastructure Session 3007 Advanced Optical Technology and Concepts Session 3009 Optical Internetworking Product Update 38

20 Introduction to Optical Technology and Components Session 2000, 2000, Cisco Cisco Systems, Systems, Inc. Inc. 39 Please Complete Your Evaluation Form Session 2000, 2000, Cisco Cisco Systems, Systems, Inc. Inc. 40

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