Results 21 to 30 of about 44,451 (275)

A Review on Inter-Satellite Links Free Space Optical Communication [PDF]

Indian Journal of Science and Technology, 2020
Objectives: The need for constricting, lightweight, low-power electronics-aggravated by the thriving demand for large data flow rate and bandwidth is urging the use of optical technologies in defense and space. Free space optical (FSO) communication links have promising eminence over microwave communication links with high speed, low weight, and ...
openaire   +1 more source

Performance analysis of a multi-format compatible all-optical data access method for satellite backbone-networks

Advanced Optical Technologies
Optical inter-satellite links are a promising technology for constructing satellite backbone networks, owing to their high data transmission capacity and lightweight terminals.
Xinning Huang, Yuerong Shen, Daming Song
doaj   +1 more source

Comprehensive Optical Inter-Satellite Communication Model for Low Earth Orbit Constellations: Analyzing Transmission Power Requirements

Photonics
Free-space optical communications have emerged as a powerful solution for inter-satellite links, playing a crucial role in next-generation satellite networks.
Michail Gioulis, Thomas Kamalakis, Dimitris Alexandropoulos   +2 more
doaj   +1 more source

H2020-SPACE-ORIONAS Miniaturized optical transceivers for high-speed optical inter-satellite links

, 2022
The European H2020-SPACE-ORIONAS project targets the development of optical transceiver and amplifier integrated circuits and modules applicable to high-speed and compact laser communication terminals. This paper presents the most recent project achievements in the fabrication of high-speed electronic-photonic modulator and receiver circuits ...
Stampoulidis, L., Osman, A., Sourikopoulos, I., Winzer, G., Zimmermann, L., Dorward, W., Rodrigo, A. Serrano, Chiesa, M., Rotta, D., Maho, A., Faugeron, M., Sotom, M., Caccavale, F.   +12 more
openaire   +2 more sources

Solar Irradiance Mitigation in LEO Optical Inter-Satellite Links via Inter-Shell Based Path Optimization

Applied Sciences
Solar irradiance is a critical factor influencing the reliability of optical inter-satellite links (O-ISLs). Despite its significance, limited research has focused on addressing this challenge.
Jae Seong Hwang, Ji-Yung Lee, Hyunchae Chun   +2 more
doaj   +1 more source

Space-Time Reference with an Optical Link

, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul, Hollberg, Leo, Kahn, Joseph M., Taylor, Michael   +3 more
core   +1 more source

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

Advanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram, Sophie Meißner, Stephan Kümmel   +2 more
wiley   +1 more source

A Comparative Survey of Optical Wireless Technologies: Architectures and Applications

, 2018
New high-data-rate multimedia services and applications are evolving continuously and exponentially increasing the demand for wireless capacity of fifth-generation (5G) and beyond.
Chowdhury, Mostafa Zaman, Hossan, Md. Tanvir, Islam, Amirul, Jang, Yeong Min   +3 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Lasercomm Activities at the German Aerospace Center’s Institute of Communications and Navigation [PDF]

, 2012
The German Aerospace Center (DLR) has a heritage of more than 25 years in working on optical inter-satellite and satellite-to-ground links. The Institute of Communications and Navigation (IKN), as a research organization of DLR, has developed coherent ...
Giggenbach, Dirk
core