Results 1 to 10 of about 3,656 (70)

Asymmetrically Clipped Optical Hadamard Coded Modulation (ACO-HCM)

open access: yesIEEE Photonics Journal, 2023
In many optical wireless communications systems, power efficiency is paramount. In others, flexibility is important. To achieve these goals, this paper presents a novel transmission scheme dubbed asymmetrically clipped optical Hadamard coded modulation ...
Henrik Schulze, Peter A. Hoeher
doaj   +1 more source

Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array

open access: yesCrystals, 2021
Acoustic focusing with intensity modulation plays an important role in biomedical and life sciences. In this work, we propose a new approach for simultaneous phase and amplitude manipulation in sub-wavelength coupled resonant units, which has not been ...
Mingran Zhang, Guangrui Gu
doaj   +1 more source

An Optically Pumped Magnetometer with Omnidirectional Magnetic Field Sensitivity

open access: yesSensors, 2023
In mobile applications such as geomagnetic surveying, two major effects hamper the use of optically pumped magnetometers: dead zones, sensor orientations where the sensors signal amplitude drops; and heading errors, a dependence of the measured magnetic ...
Volkmar Schultze   +5 more
doaj   +1 more source

Comparison of Fluidic and Non-Fluidic Surface Plasmon Resonance Biosensor Variants for Angular and Intensity Modulation Measurements

open access: yesSensors, 2023
Fluidic and non-fluidic surface plasmon resonance measurements were realized for the same type of sensory layer and using the same mouse IgG antibody and anti-mouse IgG antibody biomolecular system.
Piotr Mrozek   +2 more
doaj   +1 more source

Predistortion for High-Speed Lumped Silicon Photonic Mach-Zehnder Modulators

open access: yesIEEE Photonics Journal, 2022
The use of electrical precompensation for high-speed operation of lumped MZMs is demonstrated for 50 Gb/s PAM4 modulation through experiment and simulation.
Brian Murray   +3 more
doaj   +1 more source

Design and Implementation of Free Space Simplex Video – Laser Communication system [PDF]

open access: yesEngineering and Technology Journal, 2009
The optical communication system consists of a transmitter uses a laser beam ofa wavelength 650 nm as a carrier in free space, and a receiver uses PIN diode as adetector .
Hyder Abdul   +2 more
doaj   +1 more source

Nonlinear Channel Equalization Using Gaussian Processes Regression in IMDD Fiber Link

open access: yesIEEE Photonics Journal, 2022
Gaussian processes regression (GPR)-aided nonlinear channel equalizer (CE) is experimentally demonstrated in a multi-level intensity modulation and direct detection fiber link.
Xiang Li   +4 more
doaj   +1 more source

Optical Wireless Communications That Exploits the Human Vision’s Tolerance of Light Fluctuations in Intensity and Chromaticity

open access: yesIEEE Photonics Journal, 2022
Color shift keying (CSK) communicates information by emitting light that hops instantaneously from one chromaticity to another. This rapid hopping is too fast to be noticeable by human vision, which senses only the time-averaged color, as the human ...
Amena Ejaz Aziz, Kainam Thomas Wong
doaj   +1 more source

A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions

open access: yesApplied Sciences, 2021
This paper reviews recent progress on different high-speed optical short- and medium-reach transmission systems. Furthermore, a comprehensive tutorial on high-performance, low-cost, and advanced optical transceiver (TRx) paradigms is presented.
Isiaka Alimi   +7 more
doaj   +1 more source

Comprehensive Analysis of Time-Domain Hybrid PAM for Data-Rate and Distance Adaptive UWOC System

open access: yesIEEE Access, 2021
The challenge for next-generation underwater optical wireless communication systems is to develop optical transceivers that can operate with low power consumption by maximizing the transmission capacity according to the transmission distance between ...
Takahiro Kodama   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy