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Why should higher-layer applications care about software-defined optics?

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At Netnod Meeting in Stockholm, Torbjörn Rium explored the latest transmission technology set to enable dynamic capacity that adapts to connectivity network conditions. He discussed the potential of software-defined optics to optimize transmission bandwidth between nodes depending on parameters like link distance and quality. Torbjörn also outlined how higher-layer applications will be able to utilize these dynamic bandwidth offerings, adapting traffic and content flow to available bandwidth, as well as the role that SDN and APIs will play in enabling the necessary communication between lower connectivity and higher application layers.

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Why should higher-layer applications care about software-defined optics?

  1. 1. Torbjörn Rium Stockholm, April 2019 Netnod Meeting 2019 Why should higher-layer applications care about software-defined optics?
  2. 2. © 2019 ADVA Optical Networking. All rights reserved.22 So what‘s behind these lines between network nodes? Optical networks are often not seen by application layers
  3. 3. © 2019 ADVA Optical Networking. All rights reserved.33 Outline Advances in optical communications1 2 Application programming interfaces between layers
  4. 4. 4 © 2019 ADVA Optical Networking. All rights reserved. Advances in optical communications
  5. 5. © 2019 ADVA Optical Networking. All rights reserved.55 This will change going forward … Optical networks so far … Fixed optical layer • Rigid channel grid • Limited reconfiguration Fixed interfaces • Fixed data rate • Fixed modulation & FEC • Fixed bandwidth Static connectivity • Permanent connections • (Semi-)manual set-up ch. #1 #2 #3 #4 #5
  6. 6. © 2019 ADVA Optical Networking. All rights reserved.66 Dependency between modulation scheme, bit rate, reach Some background for understanding analog optics Terminal Optical amplifier Optical amplifier Terminal • Signal-to-noise ratio degradation through optical amplifiers • Higher-order modulation schemes
  7. 7. © 2019 ADVA Optical Networking. All rights reserved.77 • Better spectrum utilization • Adaptation to reach requirements • Lower cost-per-bit transport • More simple and cost-effective designs • Continuous innovation Software-defined coherent optics drive efficiency and flexibility Coherent modulation options and benefits
  8. 8. © 2019 ADVA Optical Networking. All rights reserved.88 Optimization potential by applications Modulation scheme, bit rate, reach Lower cost per bit Metro ptp DCI Metro core LH core
  9. 9. © 2019 ADVA Optical Networking. All rights reserved.99 Communication between optical and application layers for optimizing traffic flow Networking example: optical restoration Original working path: 300Gbit/s Restored path: 200Gbit/s 1. Original working path allows for 300Gbit/s 2. Fiber break in working path 3. Optical restoration leads to longer path 4. Restored path supports 200Gbit/s only
  10. 10. © 2019 ADVA Optical Networking. All rights reserved.1010 Fixed optical layer • Rigid channel grid • Limited reconfiguration Fixed interfaces • Fixed data rate • Fixed modulation & FEC • Fixed bandwidth Static connectivity • Permanent connections • (Semi-)manual set-up Programmable optical layer • Flexible channel grid • Full reconfiguration Software-defined transceivers • Variable data rate • Adaptive modulation & FEC • Variable bandwidth Zero touch programmability • SLA-based dynamic connections • Fully automated set-up Software-defined optics ch. #1 #2 #3 #4
  11. 11. 11 © 2019 ADVA Optical Networking. All rights reserved. Application programming interfaces between layers
  12. 12. © 2019 ADVA Optical Networking. All rights reserved.1212 Hierarchical multi-domain SDN architecture OSS/BSS SDN (multi-domain) controller/orchestrator SDN domain controller A SDN domain controller B Network management system Network elements Service lifecycle orchestration layer Network level APIs Proprietary models Device level APIs Domain A Domain B Domain C
  13. 13. © 2019 ADVA Optical Networking. All rights reserved.1313 ONF open disaggregated transport network (ODTN) demo OFC 2019
  14. 14. © 2019 ADVA Optical Networking. All rights reserved.1414 T-SDN as an enabler for new optical network services Optical spectrum services Bandwidth as a service Wavelength as a service Optical spectrum as a service “I need a 10GbE connection from A to Z“ “I need a wavelength channel from B to G“ “I need 75GHz of contiguous spectrum from E to W“
  15. 15. Thank you IMPORTANT NOTICE The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation. Copyright © for the entire content of this presentation: ADVA Optical Networking. trium@advaoptical.com

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