Next Gen Optical Transport: From 100 Gb/s to 1 Tb/s and Beyond
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Next Gen Optical Transport: From 100 Gb/s to 1 Tb/s and Beyond

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Presented at 2011 Spring Internet2 Meeting, Arlington, VA, Apr. 19, 2011

Presented at 2011 Spring Internet2 Meeting, Arlington, VA, Apr. 19, 2011

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Next Gen Optical Transport: From 100 Gb/s to 1 Tb/s and Beyond Next Gen Optical Transport: From 100 Gb/s to 1 Tb/s and Beyond Presentation Transcript

  • Next Gen Optical TransportFrom 100Gb/s to 1Tb/s and BeyondDrew Perkins: CTO, Infinera
  • What I want you to take away from this presentation  The key building blocks to achieving Terabit transport are well understood  Successful implementation requires more than just functionality, it must also enable end-user differentiation  Optical Programmability, Photonic IC’s & Switched DWDM are essential to ensuring success2 © 2011 Infinera Corporation Confidential & Proprietary
  • A Better Way to 100G3 © 2011 Infinera Corporation
  • Technological Approaches to Increase Link Capacity Time Division Multiplexing (ie: Baud Rate) 100 Gbps Modulation (ie: Bits per Hz) 10 Gbps 1 Gbps 8 (e.g. QAM-256) 4 (e.g. QAM-16) 100 Mbps 2 (e.g. PAM-4, (D)QPSK, QAM-4) 10 Mbps 1 (e.g. NRZ) Wavelength Division 1 2 4 6 8 10 Multiplexing 1 (i.e. ls) 4 CWDM DWDM 8 12 Space Division Multiplexing (ie: Parallel Optics) © 2011 Infinera Corporation
  • Advanced Modulation Formats Pol-Mux QPSK Pol-Mux 8-QAM 1.2 PM- Capacity * Reach Product BPSK Pol-Mux 1 16-QAM 0.8 0.6 0.4 0.2 IM-DD 0 1.6 8 12 16 24 C-Band Capacity (Tb/s)5 © 2011 Infinera Corporation
  • DWDM Direct DetectionSpatially separate the channels using a Spacing on the fiber needed between waves: wavelength demux “Guard Bands” PD wavelength demux6 © 2011 Infinera Corporation
  • DWDM Coherent DetectionSpatially separate the channels using a Spacing on the fiber needed between waves: wavelength demux “Guard Bands” LO PD ADC DSP wavelength Use a local oscillator to demux choose the “color” we want to “detect” to match the demux port color7 © 2011 Infinera Corporation
  • Large Scale Photonic Integration is essential COST SIZE CAPACITY RELIABILITY 500G 500G POWER Tx PIC Rx PIC Number of channels 5 x 100G Monolithic InP Chips 2 Optical elements > 600 “Gold Box” Replacements > 100 Fiber Replacements > 4008 © 2011 Infinera Corporation Confidential & Proprietary
  • For 100G, Large Scale PICs Enable…  More practical implementation • Lower cost • Smaller footprint • Higher reliability  FlexCoherent (Programmable) Modulation TM • Build more functions into one ASIC • Amortize ASIC cost over multiple wavelengths  Switched DWDM - Everywhere • Making more bandwidth available for revenue generating services9 © 2011 Infinera Corporation
  • A Vision for the Next Generation Terabit Networks Beyond 100G: The Dawn of the Terabit Age10 © 2011 Infinera Corporation
  • 1Tb/s Single Carrier: The A/D Converter Problem 10 9 PM-64QAM By 2014 commercial ADCs are 105GBaud 8 expected to operate at ~64GBaud 7 OSNR Penalty (dB) PM-32QAM 6 128GBaud 5 PM-16QAM 4 160GBaud 3 PM-8QAM 2 210GBaud 1 PM-BPSK PM-QPSK 640GBaud 320GBaud 1 2 4 6 8 10 12 Number of bits per symbol11 © 2011 Infinera Corporation
  • How 1Tb/s Might Look…Conventional WDM vs FlexChannels Conventional Per-Channel WDM Filtering  Guard bands to allow for 1Tb/s individual wavelength demux Multi-Carrier FlexChannel  Fewer guard-bands 1Tb/s  25% increase in useable amplifier spectrum12 © 2011 Infinera Corporation
  • Reach, Spectral Efficiency, and Co-Existence A E D B C 1Tb/s PM-QPSK 1Tb/s PM-8QAM 1Tb/s PM-16QAM 10x100G PM-QPSK FlexChannel FlexChannel FlexChannel or13 © 2011 Infinera Corporation
  • Summary: Proposing a best practice for 100G 3 Switched DWDM Everywhere Differentiators For Service 2 Programmable Modulation Providers 1 Large Scale PICs Fiber Capacity Foundation Advanced Coherent Advanced Features Modulation Detection FEC14 © 2011 Infinera Corporation Confidential & Proprietary
  • Thank You! dperkins@infinera.com© 2011 Infinera Corporation 15