Results 61 to 70 of about 90,037 (273)

Optical Design of Dilute Nitride Quantum Wells Vertical Cavity Semiconductor Optical Amplifiers for Communication Systems

open access: yesARO-The Scientific Journal of Koya University, 2016
III-V semiconductors components such as Gallium Arsenic (GaAs), Indium Antimony (InSb), Aluminum Arsenic (AlAs) and Indium Arsenic (InAs) have high carrier mobilities and direct energy gaps.
Faten A. Chaqmaqchee
doaj   +1 more source

A Review on the Flexure-Based Displacement Amplification Mechanisms

open access: yesIEEE Access, 2020
Multifarious flexure-based displacement amplifiers have been proposed and studied in the past decades, showing importance in many industrial fields, such as bioengineering, optical instruments, and semiconductor technology.
Fangxin Chen   +3 more
doaj   +1 more source

Comparing different nonlinearities in readout systems for optical neuromorphic computing networks

open access: yesScientific Reports, 2021
Nonlinear activation is a crucial building block of most machine-learning systems. However, unlike in the digital electrical domain, applying a saturating nonlinear function in a neural network in the analog optical domain is not as easy, especially in ...
Chonghuai Ma   +5 more
doaj   +1 more source

Longitudinal circulating tumor DNA profiling in patients with advanced endometrial cancer using an off‐the‐shelf targeted NGS panel

open access: yesMolecular Oncology, EarlyView.
Intratumour heterogeneity complicates precision management of advanced endometrial cancer. Circulating tumor DNA (ctDNA) offers a minimally invasive strategy to capture tumor evolution and therapeutic resistance. Here, we compare tumor‐agnostic NGS with tumor‐informed ddPCR, outlining their relative sensitivity, concordance, and clinical implications ...
Carlos Casas‐Arozamena   +15 more
wiley   +1 more source

Birefringence analysis of multilayer leaky cladding optical fibre [PDF]

open access: yes, 2010
We analyse a multilayer leaky cladding (MLC) fibre using the finite element method and study the effect of the MLC on the bending loss and birefringence of two types of structures: (i) a circular core large-mode-area structure and (ii) an elliptical ...
A Kumar   +8 more
core   +4 more sources

KLK7 overexpression promotes an aggressive phenotype and facilitates peritoneal dissemination in colorectal cancer cells

open access: yesFEBS Open Bio, EarlyView.
KLK7, a tissue kallikrein‐related peptidase, is elevated in advanced colorectal cancer and associated with shorter survival. High KLK7 levels in ascites correlate with peritoneal metastasis. In mice, KLK7 overexpression increases metastasis. In vitro, KLK7 enhances cancer cell proliferation, migration, adhesion, and spheroid formation, driving ...
Yosr Z. Haffani   +6 more
wiley   +1 more source

Simple DQPSK Signal Regenerator Using Electrical Limiting Amplifiers

open access: yesIEEE Photonics Journal, 2015
A simple optoelectronic regenerator for differential quadrature phase-shift keying (QPSK) signals is demonstrated. The regenerator consists of two parallel delay interferometers followed by balanced detectors, limiting and driving amplifiers, and a dual ...
Masayuki Matsumoto
doaj   +1 more source

30-nm wavelength conversion at 10 Gbit/s by four-wave mixing in a semiconductor optical amplifier [PDF]

open access: yes, 1998
Four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) is currently the only available strictly transparent wavelength-conversion technique, which is not penalized by phase matching.
D'Ottavi, A.   +6 more
core  

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Estudio, caracterización y optimización del diseño de redes DWDM

open access: yesTecnura, 2012
This project describes the DWDM network design using genetic-algorithm optimization techniques. The main purpose is to determine the minimum amount of optical amplifiers needed to operate a network as well as the exact location of each network link.
Ilber Adonayt Ruge Ruge   +3 more
doaj  

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