[HTML][HTML] Free-space optical data receivers with avalanche detectors for satellite downlinks regarding background light

D Giggenbach - Sensors, 2022 - mdpi.com
Data receiving frontends using avalanche photodiodes are used in optical free-space
communications for their effective sensitivity, large detection area, and uncomplex operation …

[HTML][HTML] Leo satellites constellation-to-ground QKD links: Greek quantum communication infrastructure paradigm

A Ntanos, NK Lyras, D Zavitsanos, G Giannoulis… - Photonics, 2021 - mdpi.com
Quantum key distribution (QKD) has gained a lot of attention over the past few years, but the
implementation of quantum security applications is still challenging to accomplish with the …

Link budget calculation in optical LEO satellite downlinks with on/off‐keying and large signal divergence: A simplified methodology

D Giggenbach, MT Knopp… - International Journal of …, 2023 - Wiley Online Library
Direct‐to‐Earth transmissions with optical on/off‐keying are becoming the method of choice
to realize telemetry downlinks from low Earth orbit satellites at highest data‐rates. Here, we …

Link availability of satellite-based FSO communications in the presence of clouds and turbulence

TV Nguyen, HD Le, TV Pham… - IEICE Communications …, 2021 - jstage.jst.go.jp
This letter addresses the link availability issue in satellitebased free space optical (FSO)
communications. In particular, we present an accurate analysis for the estimation of the link …

Optical on-off keying data links for low Earth orbit downlink applications

D Giggenbach, F Moll, C Schmidt, C Fuchs… - … Communications in the …, 2018 - elib.dlr.de
As Optical Low Earth Orbit Downlinks (OLEODL) serve for sensor data download from earth
observation satellites, their link scenario is strongly asymmetric, since the data flow is mostly …

Large-scale LEO satellite constellation to ground QKD links: Feasibility analysis

A Ntanos, NK Lyras, S Anwar, O Alia… - … on Space Optical …, 2022 - ieeexplore.ieee.org
As Quantum Key Distribution (QKD) seems to turn towards satellite communication
infrastructure to interconnect distant nodes aiming to a global quantum secured network, the …

Update on DLR's OSIRIS program and first results of OSIRISv1 on Flying Laptop

C Fuchs, C Schmidt, J Keim, F Moll… - Free-Space Laser …, 2019 - spiedigitallibrary.org
Optical satellite links have gained increasing attention throughout the last years. Especially
for the application of optical satellite downlinks. Within the OSIRIS program, DLR's Institute …

SelenIRIS: a Moon-Earth Optical Communication Terminal for CubeSats

JR Nonay, C Fuchs, D Orsucci… - … on Space Optical …, 2022 - ieeexplore.ieee.org
Satellite miniaturization and sinking costs of manu-facturing and launches are bringing
Moon missions in the focus of many space companies and agencies. However, achieving …

Availability of Free-Space Laser Communication Link with the Presence of Clouds in Tropical Regions

T Nguyen, H Le, H Pham, N Dang - EAI Endorsed Transactions on …, 2023 - eudl.eu
Free-space laser communication (lasercom), a great application of using free-space optics
(FSO) for satellite communication, has been gaining significant attraction. However, despite …

Reference power vectors for the optical LEO downlink channel

D Giggenbach, A Shrestha, F Moll… - … on Space Optical …, 2019 - ieeexplore.ieee.org
Paper Title (use style: paper title) Page 1 Reference Power Vectors for the Optical LEO Downlink
Channel Dirk Giggenbach Inst. of Communications and Nav. German Aerospace Center (DLR) …