OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 26 — Dec. 12, 2011
  • pp: B836–B841

A comparison of modulation formats for passive optical networks

Domaniç Lavery, Carsten Behrens, and Seb J. Savory  »View Author Affiliations

Optics Express, Vol. 19, Issue 26, pp. B836-B841 (2011)

View Full Text Article

Enhanced HTML    Acrobat PDF (2561 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The sensitivity of the four-dimensional modulation format, polarization-switched quadrature phase shift keying (PS-QPSK), is compared with polarization division multiplexed QPSK (PDM-QPSK), binary phase shift keying (PDM-BPSK) and 8-ary quadrature amplitude modulation (PDM-8QAM) at a constant bitrate (12.5 Gbit/s) using a preamplified signal to improve receiver sensitivity. The sensitivity without preamplification is also obtained. PS-QPSK is found to maintain a sensitivity advantage over the reference formats in line with theory with an absolute sensitivity of −52.7 dBm (4.2 photons/bit), assuming hard decision FEC.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Access Networks and LAN

Original Manuscript: October 3, 2011
Revised Manuscript: November 3, 2011
Manuscript Accepted: November 22, 2011
Published: December 7, 2011

Virtual Issues
European Conference on Optical Communication 2011 (2011) Optics Express

Domaniç Lavery, Carsten Behrens, and Seb J. Savory, "A comparison of modulation formats for passive optical networks," Opt. Express 19, B836-B841 (2011)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. H. Rohde, S. Smolorz, E. Gottwald, and K. Kloppe, “Next generation optical access: 1 Gbit/s for everyone,” paper 10.5.5 in Proceedings of European Conference on Optical Communications (ECOC) 2009.
  2. M. Karlsson and E. Agrell, “Which is the most power-efficient modulation format in optical links?,” Opt. Express17(13), 10814–10819 (2009). [CrossRef] [PubMed]
  3. D. S. Millar, D. Lavery, S. Makovejs, C. Behrens, B. C. Thomsen, P. Bayvel, and S. J. Savory, “Generation and long-haul transmission of polarization-switched QPSK at 42.9 Gb/s,” Opt. Express19(10), 9296–9302 (2011). [CrossRef] [PubMed]
  4. L. E. Nelson, X. Zhou, N. Mac Suibhne, A. D. Ellis, and P. Magill, “Experimental comparison of coherent polarization-switched QPSK to polarization-multiplexed QPSK for 10 x 100 km WDM transmission,” Opt. Express19(11), 10849–10856 (2011). [CrossRef] [PubMed]
  5. M. Sjödin, P. Johannisson, H. Wymeersch, P. A. Andrekson, and M. Karlsson, “Comparison of polarization-switched QPSK and polarization-multiplexed QPSK at 30 Gbit/s,” Opt. Express19(8), 7839–7846 (2011). [CrossRef] [PubMed]
  6. D. Lavery, C. Behrens, and S. J. Savory, “A Comparison of Modulation Formats for Passive Optical Networks,” paper Tu.5.C.5 in Proceedings of European Conference on Optical Communications (ECOC)2011.
  7. D. Lavery, E. Torrengo, and S. J. Savory, “Bidirectional 10 Gbit/s long-reach WDM-PON using digital coherent receivers,” paper OTuB4 in Proceedings of Optical Fiber Communication Conference (OFC)2011.
  8. K. Kikuchi and S. Tsukamoto, “Evaluation of sensitivity of the digital coherent receiver,” J. Lightw. Technol.26(13), 1817–1822 (2008). [CrossRef]
  9. Forward error correction for high bit-rate DWDM submarine systems, Telecommunication Standardization Sector, International Telecommunication Union, Recommendation G. 975.1, (2004).
  10. S. J. Savory, “Digital filters for coherent optical receivers,” Opt. Express16(2), 804–817 (2008). [CrossRef] [PubMed]
  11. S. J. Savory, G. Gavioli, R. I. Killey, and P. Bayvel, “Electronic compensation of chromatic dispersion using a digital coherent receiver,” Opt. Express15(5), 2120–2126 (2007). [CrossRef] [PubMed]
  12. I. Fatadin, D. Ives, and S. J. Savory, “Blind Equalization and Carrier Phase Recovery in a 16-QAM Optical Coherent System,” J. Lightw. Technol.27(15), 3042–3049 (2009). [CrossRef]
  13. D. S. Millar and S. J. Savory, “Blind Adaptive Equalization of Polarization Switched QPSK Modulation,” Opt. Express19(9), 8533–8538 (2011). [CrossRef] [PubMed]
  14. A. J. Viterbi and A. M. Viterbi, “Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission,” IEEE Trans. Inf. Theory29(4), 543–551 (1983). [CrossRef]
  15. S. P. Lloyd, “Least Squares Quantization in PCM,” IEEE Trans. Inf. Theory28(2), 129–137 (1982). [CrossRef]
  16. J. G. Proakis and M. Salehi, Digital Communications (McGraw-Hill2008)

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited