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Author Adhikari, S. ♦ Jansen, S.L. ♦ Alfiad, M. ♦ Inan, B. ♦ Sleiffer, V.A.J.M. ♦ Lobato, A. ♦ Leoni, P. ♦ Rosenkranz, W.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Optical filters ♦ OFDM ♦ Optical receivers ♦ Optical polarization ♦ Optical mixing ♦ Integrated optics ♦ Optical transmitters ♦ optical communication ♦ orthogonal frequency division multiplexing ♦ self-coherent ♦ phase noise ♦ Fabry-Perot tunable filter
Abstract Recently, coherent optical orthogonal frequency division multiplexing (CO-OFDM) has been considered for the next generation 400-Gb/s long haul data transmission. For long haul transmission systems coherent detection is beneficial compared to direct detection as it provides higher sensitivity. Though CO-OFDM offers a virtually unlimited tolerance against linear impairments, phase noise represents major challenge that must be compensated for. Thus, phase noise compensation (PNC) technique must be applied in the digital signal processing (DSP), which is already limited in speed and processing capabilities. Conversely, self coherent optical (SCO-) OFDM is an interesting alternative which does not require any PNC in the DSP. Furthermore, no local oscillator (LO) is required at the receiver. In this paper, an overview of the recently seen self coherent techniques will be given. Generally, self coherent detection is realized by sending an optical carrier along with the data signal like in direct detection systems. At the receiver, however, the optical carrier is extracted from the signal with the use of filters with very narrow bandwidth and used as an LO using heterodyne or homodyne detection. The performance of such a system depends on the filter bandwidth that is used to extract the carrier.
Description Author affiliation: Nokia Siemens Networks, Munich, Germany (Jansen, S.L.) || Institute of Communications Engineering, Technical University of Munich, Germany (Inan, B.) || COBRA institute, Eindhoven University of Technology, The Netherlands (Alfiad, M.; Sleiffer, V.A.J.M.) || Christian-Albrechts-Universitx00E4;t zu Kiel, Germany (Adhikari, S.; Rosenkranz, W.) || University of the Federal Armed Forces, Munich, Germany (Lobato, A.; Leoni, P.)
ISBN 9781457708817
ISSN 21612064
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-06-26
Publisher Place Sweden
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781457708824
Size (in Bytes) 3.83 MB
Page Count 4
Starting Page 1
Ending Page 4

Source: IEEE Xplore Digital Library