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,

Subject Categories

Computer Engineering

Telecommunications

Atom and Molecular Physics and Optics

Signal Processing

DOI

10.1364/OFC.2022.W2A.31

More information

Latest update

9/7/2023 1