Beyond 100Gbs optical transmission based on polarization multiplexed coded-OFDM with coherent detection

Ivan B Djordjevic, Lei Xu, Ting Wang

Research output: Contribution to journalArticle

22 Scopus citations


We propose a coded-modulation scheme suitable for beyond 100Gbs transmission and 100Gbs Ethernet. It is based on polarization multiplexed coded-orthogonal frequency division multiplexing (OFDM). By using 32-QAM-based polarization multiplexed coded-OFDM, we are able to achieve the aggregate rate of 100Gbs, while the OFDM signal bandwidth is only 10GHz, resulting in a spectral efficiency of 10bitssHz. The spectral efficiency of the proposed scheme is twice higher than that of the polarization diversity OFDM scheme. We show that the proposed multicarrier scheme is insensitive to polarization mode dispersion (PMD), while the PMD represents a major source of performance degradation in single carrier systems, in addition to fiber nonlinearities. We also describe how to determine the symbols' log-likelihood ratios in the presence of laser phase noise.

Original languageEnglish (US)
Article number5069798
Pages (from-to)50-56
Number of pages7
JournalJournal of Optical Communications and Networking
Issue number1
Publication statusPublished - 2009



  • 100 Gb/s Ethernet
  • Low-density parity-check (LDPC) codes
  • Optical communications
  • Orthogonal frequency division multiplexing (OFDM)
  • Polarization diversity
  • Polarization mode dispersion (PMD)
  • Polarization multiplexing

ASJC Scopus subject areas

  • Computer Networks and Communications

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