[HTML][HTML] Tbit/s line-rate satellite feeder links enabled by coherent modulation and full-adaptive optics

Y Horst, BI Bitachon, L Kulmer, J Brun… - Light: Science & …, 2023 - nature.com
Free-space optical (FSO) communication technologies constitute a solution to cope with the
bandwidth demand of future satellite-ground networks. They may overcome the RF …

Record photon information efficiency with optical clock transmission and recovery of 12.5 bits/photon over an optical channel with 77 dB loss

RJ Essiambre, C Guo, SK Dacha, A Ashikhmin… - arXiv preprint arXiv …, 2023 - arxiv.org
We experimentally demonstrate optical detection at 12.5~ bits per incident photon, 9.4~ dB
higher than the theoretical limit of conventional coherent detection. A single laser transmits …

Capacity of phase-sensitively preamplified optical links at low signal-to-noise ratio

K Vijayan, A Mirani, J Schröder, M Karlsson… - … and Exhibition on …, 2022 - opg.optica.org
We experimentally show that phase-sensitively preamplified links have higher spectral
efficiency than using conventional amplifiers at low signal-to-noise ratios. At 10 Gbaud …

Remote Sensing with Use of Coherent Parametric Quantum Amplifiers

P Kumar, GS Kanter - IGARSS 2023-2023 IEEE International …, 2023 - ieeexplore.ieee.org
Optical amplifiers play a key role in a variety of optical communication and sensing
applications. Their value in direct detection is in overcoming the thermal noise of the …

Record Photon Information Efficiency with Optical Clock Transmission and Recovery of 12.5 bits/photon After 77 dB of Optical Path Loss

C Guo, SK Dacha, RJ Essiambre… - 2023 IEEE Photonics …, 2023 - ieeexplore.ieee.org
We experimentally demonstrate optical detection at 12.5 bits per incident photon, 9.4 dB
higher than the theoretical limit of conventional coherent detection. The signal undergoes 77 …