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Feasibility study of SOA-preamplified coherent reception for 112 Gb/s DP-QPSK unamplified link

: Nielsen, M.L.; Molle, L.; Richter, T.; Schubert, C.

Institute of Electrical and Electronics Engineers -IEEE-; Optical Society of America -OSA-, Washington/D.C.:
Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2013 : Anaheim, California, USA, 17 - 21 March 2013
New York, NY: IEEE, 2013
ISBN: 978-1-4799-0457-0 (Print)
ISBN: 978-1-55752-962-6
3 pp.
Optical Fiber Communication Conference and Exposition (OFC) <2013, Anaheim/Calif.>
National Fiber Optic Engineers Conference (NFOEC) <2013, Anaheim/Calif.>
Conference Paper
Fraunhofer HHI ()

The feasibility of preamplifying a 100G DP-QPSK signal before coherent reception is investigated. A sensitivity improvement of 3 dB is found. Theoretically, there is another 5 dB of margin, and it is believed that several dBs can be gained through SOA optimization.