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Multilevel Pulse Amplitude Modulation Transmissions for Data Center Applications

  • Rafael Carvalho FigueiredoEmail author
  • André L. N. Souza
  • Stenio M. Ranzini
  • Andrea Chiuchiarelli
Chapter
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Part of the Telecommunications and Information Technology book series (TIT)

Abstract

Four-level pulse amplitude modulation (PAM4) is appearing as an important option for many applications that require optical communications at high data rate for short distances and/or with low complexity, such as Data Center interconnects. In this sense, this chapter aims to evaluate key features requirements for PAM4 transmissions focusing on short-reach DC applications. Therefore, we present a software to emulate PAM4 transmission at a high baud rate (56 GBd) in order to evaluate different configurations and impairments that could affect data transmission in the C-band, namely the digital signal processing (DSP) complexity, bandwidth limitation, chromatic dispersion tolerance, differential group delay (DGD) tolerance, and analog-to-digital converter (ADC) sampling requirements.

Keywords

Differential Group Delay (DGD) CD Tolerance Data Center Interconnection Chromatic Dispersion (CD) High Baud 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors thank Jacklyn D. Reis and Luis H. H. Carvalho for their helpful comments. The authors also thank Arley H. Salvador for reviewing a draft of this chapter. This work was partially supported by FUNTTEL/FINEP and by Sao Paulo Research Foundation (FAPESP), grant n.2015/25513-6.

References

  1. 1.
    Cisco (2016) Cisco global cloud index: forecast and methodology, 2015–2020. White PaperGoogle Scholar
  2. 2.
    Chang F (2017) New paradigm shift to PAM4 signaling at 100/400G for cloud data centers: a performance review. In: ECOC 2017; 43rd European conference on optical communication, pp 1–3Google Scholar
  3. 3.
    Matsui Y, Pham T, Ling W, Schatz R, Carey G, Daghighian H, Sudo T, Roxlo C (2016) 55-GHz bandwidth short-cavity distributed reflector laser and its application to 112-Gb/s PAM-4. In: Optical fiber communication conference postdeadline papers, Optical Society of America, p Th5B.4Google Scholar
  4. 4.
    Kanazawa S, Fujisawa T, Kiyoto Takahata YN, Yamazaki H, Ueda Y, Kobayashi W, Muramoto Y, Ishii H, Sanjoh H (2016) 56-Gbaud 4-PAM (112-Gbit/s) operation of flip-chip interconnection lumped-electrode EADFB laser module for equalizer-free transmission. In: Optical fiber communication conference, Optical Society of America, p W4J.1Google Scholar
  5. 5.
    Zhong K, Zhou X, Wang Y, Huo J, Zhang H, Zeng L, Yu C, Lau APT, Lu C (2017) Amplifier-less transmission of 56Gbit/s PAM4 over 60 km using 25 Gbps EML and APD. In: Optical fiber communication conference, Optical Society of America, p Tu2D.1Google Scholar
  6. 6.
    Sadot D, Dorman G, Gorshtein A, Sonkin E, Vidal O (2015) Single channel 112Gbit/sec PAM4 at 56Gbaud with digital signal processing for data centers applications. Opt Express 23(2):991–997CrossRefGoogle Scholar
  7. 7.
    Souza ALN, Figueiredo RC, Júnior JHC, Rossi SM, Chiuchiarelli A (2017) Extended-reach transmission of single-wavelength 112-Gbps PAM4 channel enabled by MLSE for intra data center applications. In: 2017 SBMO/IEEE MTT-S International microwave and optoelectronics conferenceGoogle Scholar
  8. 8.
    Kim M, Bae SH, Kim H, Chung YC (2017) Transmission of 56-GB/s PAM-4 signal over 20 km of SSMF using a 1.55-m directly-modulated laser. In: Optical fiber communication conference, Optical Society of America, p Tu2D.6Google Scholar
  9. 9.
    Figueiredo RC, Souza ALN, Ranzini SM, Chiuchiarelli A, Carvalho LHH, Reis JD (2017) Investigation of 56-GBd PAM4 bandwidth and chromatic dispersion limitations for data center applications. In: IMOC 2017; SBMO/IEEE MTT-S International microwave and optoelectronics conferenceGoogle Scholar
  10. 10.
    Keysight Technologies (2015) PAM-4 design challenges and the implications on test. Application NoteGoogle Scholar
  11. 11.
    Tektronix (2016) PAM4 signaling in high speed serial technology: test, analysis, and debug. Application NoteGoogle Scholar
  12. 12.
    Anritsu (2016) BER analysis of PAM4 Serdes in 56G, 100G, 200G, and 400G applications. White PaperGoogle Scholar
  13. 13.
    IEEE (2016) IEEE P802.3bs | 200 Gb/s and 400 Gb/s ethernet task force. http://www.ieee802.org/3/bs/
  14. 14.
    Eaton JW (2017) GNU Octave. http://www.gnu.org/software/octave/
  15. 15.
    Seimetz M (2009) High-order modulation for optical fiber transmission, vol 143. Springer, BerlinGoogle Scholar
  16. 16.
    Savory SJ (2008) Digital filters for coherent optical receivers. Opt Express 16(2):804–817CrossRefGoogle Scholar
  17. 17.
    Treichler J, Agee B (1983) A new approach to multipath correction of constant modulus signals. IEEE Trans Acoust Speech Signal Process 31(2):459–472CrossRefGoogle Scholar
  18. 18.
    Haykin SS (2008) Adaptive filter theory. Pearson Education India, New DelhizbMATHGoogle Scholar
  19. 19.
    Chiuchiarelli A, Rossi SM, Rozental VN, Simoes GCCP, Carvalho LHH, Oliveira JCRF, Oliveira JRF, Reis JD (2016) 50-GHz+ thin-film polymer on silicon modulator for PAM4 100G-per-wavelength long-reach data center interconnects. In: ECOC 2016; 42nd European conference on optical communication, pp 1–3Google Scholar
  20. 20.
    Chethan B, Ravisimha B, Kurian M (2014) The effects of inter symbol interference (ISI) and FIR pulse shaping filters: a survey. Int J Adv Res Electr Electron Instrum Eng 3(5):9411–9416Google Scholar
  21. 21.
    Ramaswami R, Sivarajan KN (2002) Optical networks: a practical perspective, 2nd edn. Morgan Kaufmann Publishers, BurlingtonGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Rafael Carvalho Figueiredo
    • 1
    Email author
  • André L. N. Souza
    • 1
  • Stenio M. Ranzini
    • 1
  • Andrea Chiuchiarelli
    • 1
  1. 1.CPqDOptical Technologies DivisionCampinasBrazil

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