60Gbit/s 64 QAM-OFDM coherent optical transmission with a 5.3GHz bandwidth

Tatsunori Omiya; Seiji Okamoto; Keisuke Kasai; Masato Yoshida; Masataka Nakazawa

doi:10.1587/elex.7.1163

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60Gbit/s 64 QAM-OFDM coherent optical transmission with a 5.3GHz bandwidth

Tatsunori Omiya, Seiji Okamoto, Keisuke Kasai, Masato Yoshida, Masataka Nakazawa

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Keywords: coherent transmission, orthogonal frequency division multiplexing, quadrature amplitude modulation, spectral efficiency, frequency-stabilized laser, optical phase-locked loop

JOURNAL FREE ACCESS

2010 Volume 7 Issue 15 Pages 1163-1168

DOI https://doi.org/10.1587/elex.7.1163

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Abstract

We present a 60Gbit/s polarization-multiplexed coherent optical OFDM transmission at 5Gsymbol/s by employing 64 QAM subcarrier modulation. We adopted a frequency-stabilized fiber laser and an optical PLL to achieve this high multiplicity in the subcarrier modulation. As a result, we successfully transmitted 60Gbit/s data over 160km with a demodulation bandwidth of only 5.3GHz.

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