Results 21 to 30 of about 2,266,545 (303)

Total Internal Reflection Lens for Optical Wireless Receivers

open access: yesPhotonics, 2022
This work considers the use of a freeform total internal reflection (TIR) lens for optical concentration and provides for the first time experimental results in the context of optical wireless communications (OWC). The lens is placed on a surface-mounted
René Kirrbach   +5 more
doaj   +1 more source

Receiver alignment dependence of a GA controlled optical wireless transmitter [PDF]

open access: yes, 2009
A genetic algorithm controlled multispot transmitter is demonstrated to be capable of optimizing the received power distribution for single element receivers in fully diffuse mobile indoor optical wireless systems.
Leeson, Mark S.   +2 more
core   +1 more source

30 Gb/s integrated receiver array for parallel optical interconnects

open access: yesThe Journal of Engineering, 2019
A 30 Gb/s integrated receiver array for parallel optical interconnects with four channels have been designed and implemented in a 0.13 μm CMOS technology.
Nga T.H. Nguyen   +3 more
doaj   +1 more source

Giga-Bit Transmission Between an Eye-Safe Transmitter and Wide Field-of-View SiPM Receiver

open access: yesIEEE Access, 2021
In this paper, the performance of a wide field of view VLC receiver that includes a silicon photomultiplier (SiPM) is reported. In particular, a receiver field of view of ±45° and On-Off keying data rates of 1.8 Gbps are demonstrated in 500
Wajahat Ali   +4 more
doaj   +1 more source

Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]

open access: yes, 2006
A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus   +9 more
core   +1 more source

On the Use of Gaussian Approximation in Analyzing the Performance of Optical Receivers

open access: yesIEEE Photonics Journal, 2014
The analytical calculation of the bit error rate (BER) of digital optical receivers that employ avalanche photodiodes (APDs) is challenging due to 1) the stochastic nature of the avalanche photodiode's impulse-response function and 2) the presence of ...
G. El-Howayek   +5 more
doaj   +1 more source

Systematic Performance Comparison of (Duobinary)-PAM-2,4 Signaling under Light and Strong Opto-Electronic Bandwidth Conditions

open access: yesPhotonics, 2021
We present a systematic comparison of PAM-2 (NRZ), Duobinary-PAM-2, PAM-4, and Duobinary-PAM-4 (duo-quaternary) signaling in the context of short-reach photonic communications systems using a Mach–Zehnder modulator as transmitter.
Ramón Gutiérrez-Castrejón   +11 more
doaj   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]

open access: yes, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll   +13 more
core   +1 more source

Radiation Hard 2.5 Gb/s InGaAs/AlGaAsSb Avalanche Photodiode for Harsh Space Environments

open access: yesAerospace
To realise high-speed free-space optical communication links in harsh space environments, it is crucial to consider the link’s operating wavelength, the performance of the optical receiver, and the radiation hardness of the avalanche photodiode (APD ...
Ding Chen   +6 more
doaj   +1 more source

Results of the Optical Downlink Experiment KIODO from OICETS Satellite to Optical Ground Station Oberpfaffenhofen (OGS-OP) [PDF]

open access: yes, 2007
Optical LEO downlinks from the Japanese OICETS to the optical ground station built by the German Aerospace Center (DLR) near Munich have been performed. This was the first optical LEO downlink on European grounds.
Perlot, Nicolas   +13 more
core   +1 more source

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