Title :
Versatile coherent in-line 4-, 16-, 32-QAM subcarrier add/drop-multiplexing by optical frequency conversion
Author :
Schmidt-Langhorst, Carsten ; Richter, Thomas ; Elschner, Robert ; Kato, Tomoyuki ; Tanimura, Takahito ; Watanabe, Shigeki ; Schubert, Colja
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich Hertz Inst., Berlin, Germany
Abstract :
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.
Keywords :
multiplexing; optical frequency conversion; quadrature amplitude modulation; OSNR penalty; coherent add-drop node; coherent in-line 16QAM; coherent in-line 32QAM; coherent in-line 4QAM; interformat 4QAM-by-16QAM add-drop; intraformat subcarrier add-drop-multiplexing; modulation format agility; modulation format scalability; optical frequency conversion; Bit error rate; OFDM; Optical frequency conversion; Optical interferometry; Optical modulation;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2015
Conference_Location :
Los Angeles, CA
