Results 31 to 40 of about 70,027 (278)
Optical Receiver for Optical Time Domain Reflectometer
Elektronika ir Elektrotechnika, 2012 In this paper we analyze an optical receiver (OR) for the optical time domain reflectometer (OTDR). Using optical receiver’s model, which consists of shunt-shunt feedback transimpedance amplifier (TIA) and InGaAs avalanche photodiode (APD), we discuss and give equations for all important noise sources, which are amplifiers input transistor channel ...
Charlamov, Jevgenij +4 more
openaire +2 more sources
On the Multivariate Gamma-Gamma ($\Gamma \Gamma$) Distribution with Arbitrary Correlation and Applications in Wireless Communications [PDF]
, 2015 The statistical properties of the multivariate Gamma-Gamma ($\Gamma \Gamma$) distribution with arbitrary correlation have remained unknown. In this paper, we provide analytical expressions for the joint probability density function (PDF), cumulative ...
Dai, Linglong +3 more
core +2 more sources
Data-Aided Versus Blind Single-Carrier Coherent Receivers
IEEE Photonics Journal, 2010 Fiber-optic research in signal processing for the first generation of coherent communication systems was dominated by receivers with blind adaptation. Next-generation systems will require a scalable and modular design for higher order modulation formats.
Maxim Kuschnerov +8 more
doaj +1 more source
Structured Optical Receivers for Efficient Deep-Space Communication
, 2017 We discuss conceptual designs for structured optical receivers that can alleviate the requirement for high peak-to-average power ratio in photon-starved optical communication.
Banaszek, Konrad, Jachura, Michał
core +1 more source
Fast synchronization 3R burst-mode receivers for passive optical networks [PDF]
, 2014 This paper gives a tutorial overview on high speed burst-mode receiver (BM-RX) requirements, specific for time division multiplexing passive optical networks, and design issues of such BM-RXs as well as their advanced design techniques. It focuses on how
Bauwelinck, Johan +8 more
core +2 more sources
Quantum receivers with squeezing and photon-number-resolving detectors
, 2013 We propose quantum receivers with optical squeezing and photon-number-resolving detector (PNRD) for the near-optimal discrimination of quaternary phase-shift-keyed coherent state signals. The basic scheme is similar to the previous proposals (e.g.
Ema, Kazuhiro +3 more
core +1 more source
Sensitivity Improvement of 2.5 Gb/s Receivers Using AlGaAsSb Avalanche Photodiodes
Applied SciencesAt a 1550 nm wavelength, the optical sensitivity of conventional indium gallium arsenide (InGaAs)-based avalanche photodiodes (APDs) is restricted by their high excess noise, hindering their performance in long-range free-space optical communication ...
Jonty Veitch +4 more
doaj +1 more source
FEBS Letters, EarlyView.We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley +1 more source
Integrated optical vortex beam receivers [PDF]
Optics Express, 2016 A simple and ultra-compact integrated optical vortex beam receiver device is presented. The device is based on the coupling between the optical vortex modes and whispering gallery modes in a micro-ring resonator via embedded angular gratings, which provides the selective reception of optical vortex modes with definitive total angular momentum ...
Cicek, Kenan +11 more
openaire +6 more sources
FEBS Letters, EarlyView.Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes +4 more
wiley +1 more source