Abstract

We examine how datarate-adaptive transceivers can be used to follow the pronounced variations in requested bandwidth in core networks and therefore allow significant energy savings compared to static networks configured to support the peak traffic all the times. We investigate two schemes for datarate adaptation in optical transceivers: modulation-format adaptation and symbol-rate adaptation, and show how they yield comparable energy savings but through very different mechanisms. We quantify these energy savings with respect to static networks for the case of a European backbone network and find potential for up to 30% of savings when the two schemes are combined.

© 2012 IEEE

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  1. D. Kilper, "Power trends in communication networks," IEEE J. Sel. Topics Quantum Electron. 17, 275-284 (2011).
  2. R. W. Tkach, "Scaling optical communications for the next decade and beyond," Bell Labs Tech. J. 14, 3-10 (2010).
  3. C. Lange, A. Gladisch, "Energy efficiency limits on load adaptive networks," Proc. OFC (2010).
  4. D. Abts, "Energy proportional datacenter networks," Proc. ISCA (2010) pp. 338-347.
  5. M. Jinno, "Spectrum-efficient and scalable elastic optical path network: Architecture, benefits, and enabling technologies," Commun. Mag., IEEE 47, 66-73 (2009).
  6. O. Rival, "Impact of inter-channel nonlinearities on the planning of 25โ€“100 Gb/s elastic optical networks," J. Lightw. Technol. 29, 1326-1334 (2011).
  7. O. Rival, A. Morea, "Cost-efficiency of mixed 10-40-100 Gb/s networks and elastic optical networks," Proc. OFC (2011).
  8. R. Schmogrow, "Real-time software-defined multiformat transmitter generating 64QAM at 28 GBd," IEEE Photon. Technol. Lett. 22, 1601-1603 (2010).
  9. Z. Wei, "On the spectrum-efficiency of bandwidth-variable optical OFDM transport networks," Proc. OFC (2010).
  10. A. Bocoi, "Reach-dependent capacity in optical networks enabled by OFDM," Proc. OFC (2009).
  11. K. Christodoulopoulos, "Elastic bandwidth allocation in flexible OFDM-based optical networks," J. Lightw. Technol. 29, 1354-1366 (2011).
  12. A. Tilwankar, "Energy savings in shortest-path routed core networks using bitrate-adaptive software-defined optical interfaces," Proc. ACP (2011).
  13. A. Klekamp, "Transparent WDM network with bitrate tunable optical OFDM transponders," Proc. OFC (2010).
  14. D. Geisler, "Bandwidth scalable, coherent transmitter based on the parallel synthesis of multiple spectral slices using optical arbitrary waveform generation," Opt. Exp. 19, 8242-8253 (2011).
  15. A. Morea, "Power management of optoelectronic interfaces for dynamic optical networks," Proc. ECOC (2011).
  16. E. Agrell, M. Karlsson, "Power-efficient modulation formats in coherent transmission systems," J. Lightw. Technol. 27, 5115-5126 (2009).
  17. B. Spinnler, "Equalizer design and complexity for digital coherent receivers," IEEE J. Sel. Topics Quantum Electron. 16, 1180-1192 (2010).
  18. A. Bononi, "Modeling nonlinearity in coherent transmissions with dominant interpulse-four-wave-mixing," Proc. ECOC (2011).
  19. P. Poggiolini, "Performance dependence on channel baud-rate of PM-QPSK systems over uncompensated links," IEEE Photon. Technol. Lett. 23, 15-17 (2011).
  20. T. Burd, "A dynamic voltage scaled microprocessor system," IEEE J. Solid-State Circuits 35, (2000).
  21. E. Bonetto, "Exploiting traffic dynamics in power-aware logical topology design," Proc. ECOC (2011).
  22. A. Morea, "QoT function and A* routing: An optimized combination for connection search in translucent networks," OSA J. Opt. Networking 7, 42-61.

2011 (5)

D. Kilper, "Power trends in communication networks," IEEE J. Sel. Topics Quantum Electron. 17, 275-284 (2011).

O. Rival, "Impact of inter-channel nonlinearities on the planning of 25โ€“100 Gb/s elastic optical networks," J. Lightw. Technol. 29, 1326-1334 (2011).

K. Christodoulopoulos, "Elastic bandwidth allocation in flexible OFDM-based optical networks," J. Lightw. Technol. 29, 1354-1366 (2011).

D. Geisler, "Bandwidth scalable, coherent transmitter based on the parallel synthesis of multiple spectral slices using optical arbitrary waveform generation," Opt. Exp. 19, 8242-8253 (2011).

P. Poggiolini, "Performance dependence on channel baud-rate of PM-QPSK systems over uncompensated links," IEEE Photon. Technol. Lett. 23, 15-17 (2011).

2010 (3)

R. Schmogrow, "Real-time software-defined multiformat transmitter generating 64QAM at 28 GBd," IEEE Photon. Technol. Lett. 22, 1601-1603 (2010).

R. W. Tkach, "Scaling optical communications for the next decade and beyond," Bell Labs Tech. J. 14, 3-10 (2010).

B. Spinnler, "Equalizer design and complexity for digital coherent receivers," IEEE J. Sel. Topics Quantum Electron. 16, 1180-1192 (2010).

2009 (2)

M. Jinno, "Spectrum-efficient and scalable elastic optical path network: Architecture, benefits, and enabling technologies," Commun. Mag., IEEE 47, 66-73 (2009).

E. Agrell, M. Karlsson, "Power-efficient modulation formats in coherent transmission systems," J. Lightw. Technol. 27, 5115-5126 (2009).

2000 (1)

T. Burd, "A dynamic voltage scaled microprocessor system," IEEE J. Solid-State Circuits 35, (2000).

Bell Labs Tech. J. (1)

R. W. Tkach, "Scaling optical communications for the next decade and beyond," Bell Labs Tech. J. 14, 3-10 (2010).

Commun. Mag., IEEE (1)

M. Jinno, "Spectrum-efficient and scalable elastic optical path network: Architecture, benefits, and enabling technologies," Commun. Mag., IEEE 47, 66-73 (2009).

IEEE Photon. Technol. Lett. (1)

R. Schmogrow, "Real-time software-defined multiformat transmitter generating 64QAM at 28 GBd," IEEE Photon. Technol. Lett. 22, 1601-1603 (2010).

IEEE J. Sel. Topics Quantum Electron. (1)

B. Spinnler, "Equalizer design and complexity for digital coherent receivers," IEEE J. Sel. Topics Quantum Electron. 16, 1180-1192 (2010).

IEEE J. Sel. Topics Quantum Electron. (1)

D. Kilper, "Power trends in communication networks," IEEE J. Sel. Topics Quantum Electron. 17, 275-284 (2011).

IEEE J. Solid-State Circuits (1)

T. Burd, "A dynamic voltage scaled microprocessor system," IEEE J. Solid-State Circuits 35, (2000).

IEEE Photon. Technol. Lett. (1)

P. Poggiolini, "Performance dependence on channel baud-rate of PM-QPSK systems over uncompensated links," IEEE Photon. Technol. Lett. 23, 15-17 (2011).

J. Lightw. Technol. (2)

E. Agrell, M. Karlsson, "Power-efficient modulation formats in coherent transmission systems," J. Lightw. Technol. 27, 5115-5126 (2009).

K. Christodoulopoulos, "Elastic bandwidth allocation in flexible OFDM-based optical networks," J. Lightw. Technol. 29, 1354-1366 (2011).

J. Lightw. Technol. (1)

O. Rival, "Impact of inter-channel nonlinearities on the planning of 25โ€“100 Gb/s elastic optical networks," J. Lightw. Technol. 29, 1326-1334 (2011).

Opt. Exp. (1)

D. Geisler, "Bandwidth scalable, coherent transmitter based on the parallel synthesis of multiple spectral slices using optical arbitrary waveform generation," Opt. Exp. 19, 8242-8253 (2011).

OSA J. Opt. Networking (1)

A. Morea, "QoT function and A* routing: An optimized combination for connection search in translucent networks," OSA J. Opt. Networking 7, 42-61.

Other (10)

A. Morea, "Power management of optoelectronic interfaces for dynamic optical networks," Proc. ECOC (2011).

E. Bonetto, "Exploiting traffic dynamics in power-aware logical topology design," Proc. ECOC (2011).

A. Bononi, "Modeling nonlinearity in coherent transmissions with dominant interpulse-four-wave-mixing," Proc. ECOC (2011).

O. Rival, A. Morea, "Cost-efficiency of mixed 10-40-100 Gb/s networks and elastic optical networks," Proc. OFC (2011).

C. Lange, A. Gladisch, "Energy efficiency limits on load adaptive networks," Proc. OFC (2010).

D. Abts, "Energy proportional datacenter networks," Proc. ISCA (2010) pp. 338-347.

A. Tilwankar, "Energy savings in shortest-path routed core networks using bitrate-adaptive software-defined optical interfaces," Proc. ACP (2011).

A. Klekamp, "Transparent WDM network with bitrate tunable optical OFDM transponders," Proc. OFC (2010).

Z. Wei, "On the spectrum-efficiency of bandwidth-variable optical OFDM transport networks," Proc. OFC (2010).

A. Bocoi, "Reach-dependent capacity in optical networks enabled by OFDM," Proc. OFC (2009).

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