Optical signal processing using coherent optical frequency combs could have various potential applications for optical communications. In the beginning, an approach to achieve a tunable optical high-order QAM generation based on multichannel aggregation is discussed. Then, an all-optical pilot-tone based self-homodyne-detection scheme is demonstrated under two scenarios: (i) multiple WDM channels with sufficient power of pilot tones, and (ii) a single channel with a low-power pilot tone. Finally, a fragmented bandwidth allocation enabled by reconfigurable channel slicing and stitching is presented, in which a single optical channel could be redistributed into fragmented frequency slots and ultimately recovered at the receiver side.
Y. Cao, A. Fallahpour, M. Ziyadi, and A. E. Willner, "Optical signal processing using coherent optical frequency combs," Proc. SPIE 10560, Metro and Data Center Optical Networks and Short-Reach Links, 105600K (Presented at SPIE OPTO: January 31, 2018; Published: 30 January 2018); https://doi.org/10.1117/12.2286808.
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