Author(s): Abdulamir Ali | Jochen Leibrich | Werner Rosenkranz
Journal: Journal of Networks
ISSN 1796-2056
Volume: 7;
Issue: 5;
Start page: 757;
Date: 2012;
Original page
Keywords: optical communications | modulation | QAM | OFDM | direct detection | WDM
ABSTRACT
This paper addresses OFDM transmission over optical links with high spectral efficiency, i.e. by using highorder QAM-modulation schemes as a mapping method prior to the OFDM multicarrier representation. Low and moderate cost optics which is mandatory in access and in metro applications is assumed. Here we address especially direct detection receivers using photo detectors without the need for local lasers at the transmitter side. In addition, we show 32ยด10.7 Gb/s optical WDM-OFDM over 3200km SSMF with direct detection.
Journal: Journal of Networks
ISSN 1796-2056
Volume: 7;
Issue: 5;
Start page: 757;
Date: 2012;
Original page
Keywords: optical communications | modulation | QAM | OFDM | direct detection | WDM
ABSTRACT
This paper addresses OFDM transmission over optical links with high spectral efficiency, i.e. by using highorder QAM-modulation schemes as a mapping method prior to the OFDM multicarrier representation. Low and moderate cost optics which is mandatory in access and in metro applications is assumed. Here we address especially direct detection receivers using photo detectors without the need for local lasers at the transmitter side. In addition, we show 32ยด10.7 Gb/s optical WDM-OFDM over 3200km SSMF with direct detection.