Coherent Combining at Ultra-low Optical Signal Powers based on Optically Amplified Error Feedback
Paper in proceeding, 2022
Coherent combining in multi-aperture reception for free-space communication applications requires active phase alignment. Here, using 50/50-fiber-couplers and optically preamplified error feedback, coherent combining of four -80dBm, 10Gbaud QPSK signals is demonstrated with 95.4% efficiency.
Author
Rasmus Larsson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Jochen Schröder
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Magnus Karlsson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Peter Andrekson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
2022 Optical Fiber Communications Conference and Exhibition, OFC 2022 - Proceedings
W2A.31
9781557524669 (ISBN)
2022 Optical Fiber Communications Conference and Exhibition, OFC 2022
San Diego, USA,
San Diego, USA,
Subject Categories
Computer Engineering
Telecommunications
Atom and Molecular Physics and Optics
Signal Processing
DOI
10.1364/OFC.2022.W2A.31