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Transmission of 5×62 Gbit/s DWDM coherent OFDM with a spectral efficiency of 7.2 Bit/s/Hz using joint 64-QAM and 16-QAM modulation

: Nölle, M.; Molle, L.; Gross, D.-D.; Freund, R.

Institute of Electrical and Electronics Engineers -IEEE-:
Conference on Optical Fiber Communication, Collocated National Fiber Optic Engineers Conference OFC/NFOEC 2010 : 21-25 March 2010, San Diego, CA
New York, NY: IEEE, 2010
ISBN: 978-1-55752-884-1
Art. 5465335
Conference on Optical Fiber Communication (OFC) <2010, San Diego/Calif.>
National Fiber Optic Engineers Conference (NFOEC) <2010, San Diego/Calif.>
Conference Paper
Fraunhofer HHI ()

Transmission of 5×62 Gbit/s polarization multiplexed coherent OFDM is demonstrated over 80 km SSMF. Using 64-QAM and 16-QAM simultaneously allows reducing the channel spacing and makes a net spectral efficiency of 7.2 bit/s/Hz possible.