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Versatile coherent in-line 4-, 16-, 32-QAM subcarrier add/drop-multiplexing by optical frequency conversion

: Schmidt-Langhorst, C.; Richter, T.; Elschner, R.; Kato, T.; Tanimura, T.; Watanabe, S.; Schubert, C.


Optical Society of America -OSA-, Washington/D.C.:
Optical Fiber Communication Conference 2015. Proceedings : 22 - 26 March 2015, Los Angeles, California, United States
Washington, DC: OSA, 2015 (OSA Technical digest series)
ISBN: 978-1-55752-937-4
Paper M3F.1
Optical Fiber Communication Conference (OFC) <2015, Los Angeles/Calif.>
Conference Paper
Fraunhofer HHI ()

We experimentally investigate the modulation format scalability & agility of a coherent add/drop node. Extinction of 25 dB yields OSNR penalties up to 1.1-dB for 3.2-GBd intra -format subcarrier add/drop up to 32QAM and 0.8-dB for inter-format 4QAM-by-16QAM add/drop.