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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 27, Iss. 3 — Feb. 1, 2009
  • pp: 177–188

121.9-Gb/s PDM-OFDM Transmission With 2-b/s/Hz Spectral Efficiency Over 1000 km of SSMF

Sander Lars Jansen, Itsuro Morita, Tim C. W. Schenk, and Hideaki Tanaka

Journal of Lightwave Technology, Vol. 27, Issue 3, pp. 177-188 (2009)


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Abstract

We discuss optical multi-band orthogonal frequency division multiplexing (OFDM) and show that by using multiple parallel OFDM bands, the required bandwidth of the digital-to-analogue/ analogue-to-digital converters and the required cyclic prefix can significantly be reduced. With the help of four OFDM bands and polarization division multiplexing (PDM) we report continuously detectable transmission of 10$\,\times\,$121.9-Gb/s (112.6-Gb/s without OFDM overhead) at 50-GHz channel spacing over 1,000-km standard single mode fiber (SSMF) without any inline dispersion compensation. In this experiment 8 QAM subcarrier modulation is used which confines the spectrum of the 121.9 Gb/s PDM-OFDM signal within a 22.8 GHz optical bandwidth. Moreover, we propose a digital signal processing method to reduce the matching requirements for the wideband transmitter IQ mixer structures required for PDM-OFDM.

© 2009 IEEE

Citation
Sander Lars Jansen, Itsuro Morita, Tim C. W. Schenk, and Hideaki Tanaka, "121.9-Gb/s PDM-OFDM Transmission With 2-b/s/Hz Spectral Efficiency Over 1000 km of SSMF," J. Lightwave Technol. 27, 177-188 (2009)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-27-3-177

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