Results 61 to 70 of about 201,426 (331)

Optical cable amplifiers

Electronics Letters, 1995
A new concept is presented for an optical repeater that can be installed inside an optical fibre cable. This optical cable amplifier enables construction of a terminal-free transmission system. The optical cable amplifier is an erbium amplifier which is specially designed for installation in an optical fibre cable.
Masataka Nakazawa, Y. Kimura
openaire   +2 more sources

Optical amplifier for space applications [PDF]

Optics Express, 1999
We describe an optical amplifier designed to amplify a spatially sampled component of an optical wavefront to kilowatt average power. The goal is means for implementing a strategy of spatially segmenting a large aperture wavefront, amplifying the individual segments, maintaining the phase coherence of the segments by active means, and imaging the ...
Andrew S. Keys, Lisa J. Gamble, Richard L. Fork, William M. Diffey, Spencer T. Cole   +4 more
openaire   +2 more sources

Development of a Photo-Fluidic Control Valve without Mechanical Moving Parts

Journal of Fluid Science and Technology, 2010
An optical servo system is a new control system which can be used in hazardous environments; such as those with electromagnetic influence, radiation and so on. The purpose of our study is to develop such an optical control system.
Tetsuya AKAGI, Shujiro DOHTA
doaj   +1 more source

MGF Methods for Fixed and Gain Saturated Optically Preamplified FSO Links Impaired by Misalignments and Atmospheric Turbulence

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022
The Gaussian approximation is commonly used to evaluate the performance of free space optical communication systems. However, other performance evaluation methods such as the saddle point approximation, Chernoff bound and the modified Chernoff bound have
Jeremiah Oluwatosin Bandele
doaj   +1 more source

Single‐cell transcriptomics redefines focal neuroendocrine differentiation as a distinct prostate cancer pathology

Molecular Oncology, EarlyView.
Single‐cell transcriptomics of prostate cancer patient‐derived xenografts reveals distinct features of neuroendocrine (NE) subtypes. Tumours with focal NE differentiation (NED) share transcriptional programmes with adenocarcinoma, differing from large and small cell neuroendocrine prostate cancer (NEPC). Our work defines the molecular landscape of NEPC,
Rosalia Quezada Urban, Shivakumar Keerthikumar, Ashlee Clark, Hong Wang, Belinda Phipson, Andrew Bakshi, Andrew Ryan, Heather Thorne, Renea A. Taylor, Mitchell G. Lawrence, Gail P. Risbridger, Roxanne Toivanen, David L. Goode   +12 more
wiley   +1 more source

COMPREHENSIVE INVESTIGATION MODELING FOR SEMICONDUCTOR OPTICAL AMPLIFIER (SOA) [PDF]

Jordanian Journal of Computers and Information Technology, 2015
This paper presents the effects of the input signal on the gain and carrier density response of a semiconductor optical amplifier (SOA). The SOA is modeled using a segmentation method. The input bias current, input power, wavelength and the length of SOA
Esra A. Alquda, Aser M. Matarneh
doaj   +1 more source

Bridging the gap: Multi‐stakeholder perspectives of molecular diagnostics in oncology

Molecular Oncology, EarlyView.
Although molecular diagnostics is transforming cancer care, implementing novel technologies remains challenging. This study identifies unmet needs and technology requirements through a two‐step stakeholder involvement. Liquid biopsies for monitoring applications and predictive biomarker testing emerge as key unmet needs. Technology requirements vary by
Jorine Arnouts, Senada Koljenović, Elise Daems, Karolien De Wael, Marc Peeters, Léon C. van Kempen, Greetje Vanhoutte, Karen Zwaenepoel, Timon Vandamme   +8 more
wiley   +1 more source

Ghost Interference with Optical Parametric Amplifier

, 2004
The 'Ghost' interference experiment is analyzed when the source of entangled photons is a multimode Optical Parametric Amplifier(OPA) whose weak limit is the two-photon Spontaneous Parametric Downconversion(SPDC) beam.
D. F. Walls, D. N. Klyshko, J. W. Goodman, M. Born, M. O. Scully, Morton H. Rubin, Sulakshana Thanvanthri   +6 more
core   +1 more source

Current trends in single‐cell RNA sequencing applications in diabetes mellitus

FEBS Open Bio, EarlyView.
Single‐cell RNA sequencing is a powerful approach to decipher the cellular and molecular landscape at a single‐cell resolution. The rapid development of this technology has led to a wide range of applications, including the detection of cellular and molecular mechanisms and the identification and introduction of novel potential diagnostic and ...
Seyed Sajjad Zadian, Khodakaram Jahanbin, Shekoofeh Nikooei, Marzieh Rostaminejad, Arezoo Rahimi, Pedram Abdizadeh, Behnam Alipoor   +6 more
wiley   +1 more source

PPM demodulation: On approaching fundamental limits of optical communications

, 2010
We consider the problem of demodulating M-ary optical PPM (pulse-position modulation) waveforms, and propose a structured receiver whose mean probability of symbol error is smaller than all known receivers, and approaches the quantum limit.
Boroson DM, Habif JL, Helstrom CW, Jonathan L. Habif, M. Takeoka, Saikat Guha, Shapiro JH   +6 more
core   +1 more source