100G – Present Perspective and Future Trends

October 8, 2009

Dimple I. Amin

VP Products & Technology damin@ciena.com

2

100G Market Drivers •  Network Infrastructure Exhaust > Transmission Capacity Expansion

–  Many carriers report traffic growth rates of 30% to 50% annually

–  Some networks have heavily loaded 10G links and are fiber constrained

–  10G to 100G muxponder solution provides 10X capacity per wave

•  100G Service Requirement > Native 100G Service Offerings

–  100G service offerings to customers with 100G data sources

–  100G infrastructure links to support 10G and 40G packet service offerings

–  Availability of 100G interfaces on switches is a gating item

100G

1H08 2H08 1H09 2H09 1H10 2H10 1H11 2H11 1H12 2H12

1 2 3 4 5 6

System Capacity

(Tbps)

80x10G

30% Growth

50% Growth

50chx10G

80x40G

7

8 80x100G

3

Scaling Transmission Infrastructure

10Gbps per λ

100Gbps per λ

 Requirements:   Capacity efficiency

 More than 10G, 40G systems  On existing infrastructure

  LD – typically 80 ch & 1500 KM  Metro – up to 20 ROADMs

  CAPEX benefits  Lower cost per bit than 10G and 40G

  OPEX benefits

 Number of systems constant  Reduced space and power per bit

Long Distance

Metro

100Gbps per λ

4

Approaches to the 100G Business Case Transmission capacity expansion in long distance networks

  Case A - No impending capacity exhaust  Transceiver cost is sole factor  Stay with 10G for small incremental traffic

  Case B - Impending exhaust – ample fiber  10G - add new ROADMs and amplifiers  10G - add new space and power  100G - increased cost balances new amps…

  Case C - Impending exhaust – need fiber  10G - add fiber cost, typically 20 year IRU  10G - add ROADMs and amplifiers  10G - add new space and power  100G – increased cost balances new fiber, amps …

100G 10G 10G 10G 10G 10G 10G 10G 10G 10G 10G

100G 10G 10G 10G 10G 10G 10G 10G 10G 10G 10G

100G 10G 10G 10G 10G 10G 10G 10G 10G 10G 10G

Cost-per-bit equivalence between 10G and 100G will take time. What other factors will drive 100G deployment in the interim?

5

Approaches to the 100G Business Case 100G Router Interconnection

 Router interface costs more significant factor than transport interface costs  Bundling mechanism for multichannel links requires additional capacity  Transport considerations

 Relative costs of 10G and 100G router interfaces are critical factors  Single large link yields efficiencies over bundled links  Transport considerations

10Gbps per λ

100Gbps per λ

…

…

6

Early Applications of 100G

  Large volume of high value traffic

  High traffic growth rate

  Strict latency requirements

Financial Community Research and Education

  Massive traffic from new instruments

  Supercomputer interconnects

  Networking research platforms

Web centric companies

  Large traffic volume and growth rate

  Internet traffic concentration points

  High bandwidth data center links

Service Providers

  New service offerings

  Assert technology leadership

  Meeting needs of early adopters

7

NYSE Euronext architecture

Legend : Multicast Market Data Data Center Traffic

 Latency - key requirement for NYSE-Euronext

  Fiber latency, choose short fiber paths

  Minimize transponder latency

8

Large Hadron Collider – CERN Big Science – Huge Data Sets – Thousands of destinations

Installation of the world's largest silicon tracking detector in the CMS experiment. (Michael Hoch, © CERN)

9

Parameters for Successful 100G System Design

10

Balancing Act of Technology choices for 100G

Provide highest performance, lowest cost solution for target market(s)

11

Enabling Technologies for 100G

Highly integrated components are key to low power, low cost solutions

12

100G Modulation Scheme Comparison

  PSBT: Phase Shaped Binary Transmission PM-DQPSK: Polarization Multiplexed –

  Differential Quaternary Phase Shift Keying

  DPSK: Differential Phase Shift Keying PM-QPSK Polarization Multiplexed – Quaternary Phase Shift Keying w/ Coherent Rx: with Coherent Receiver

Intrinsic Tolerance to Chromatic Dispersion

Tolerance to 1st Order Polarization Mode Dispersion

Tolerance to 2nd Order Polarization Mode Dispersion

Optical Signal to Noise Ratio Sensitivity

Transmission Reach

Spectral Efficiency

PSBT DPSK PM-DQPSK PM-QPSK w/ Coherent Rx

Fair

Poor

Excellent

Poor

Poor

Good

Poor

Poor

Fair

Fair

Fair

Fair

Good

Good

Good

Good

Good

Good Good

Excellent

Excellent

Excellent

Excellent

Excellent

Coherent PM-QPSK enables >1500km reach with a single wavelength

Appropriate for 100G

13

100G & Supercomputing’08 The Road to 100G: > 8Tb/s on fiber system

Single Wavelength 100G @ 50Ghz Spacing

Full C-Band Tunable, ROADM Compliant

Asynchronous Multiplexing 10x10G

Any 10G Client on Any Port

100G 8dB+ Enhanced FEC

Polarization Multiplexed

RZ-DQPSK Modulation Format

Low Latency

Commercial Form Factor

1 Petabyte of data transfer in 12hours on 1 wavelength

Thank you