Results 91 to 100 of about 1,804,643 (357)
Advanced Functional Materials, EarlyView.Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner +14 more
wiley +1 more source
The Review of Laser Engineering, 2001 This paper reviews recent progress in broadband Raman amplifiers for WDM applications. After discussing the fundamentals of Raman amplifiers, basic characteristics of multi-wavelength pumped Raman amplifiers are presented. The design procedure of multi-wavelength pumped Raman amplifiers is summarizedwith respect to the pumping wavelength and power ...
Yoshihiro EMORI, Shu NAMIKI
openaire +2 more sources
Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films
Advanced Functional Materials, EarlyView.Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee +5 more
wiley +1 more source
The Stability Analysis for In-Band Pumped Master Oscillator Power Amplifiers
IEEE Photonics Journal, 2016 An analytical study is carried out for in-band-pumped ytterbium-doped fiber amplifiers. In particular, the high-brightness pump laser design criteria in terms of stability performance against the back reflections are discussed for different fiber and ...
Salih K. Kalyoncu
doaj +1 more source
Fundamentals of Fiber Lasers and Fiber Amplifiers [PDF]
, 2014 Introduction.- Optical properties and optical spectroscopy of rare-earth ions in solids.- Electron-phonon coupling in solids.- Phonon sidebands of optical transition in solids.- Optical center transitions: spontaneous and stimulated emission.- Rare-earth center in solids.- Homogeneous and inhomogeneous line broadening.- Spectroscopic parameters of ...
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, 2008 This paper characterizes the gain and the carrier density responses of a semiconductor optical amplifier (SOA). In order to achieve the switching functions in SOA-based optical switches, such as Symmetric Mach-Zehnder (SMZ), the effect of the input ...
Ghassemlooy, Zabih +11 more
core +1 more source
Spatial mode switchable, wavelength tunable erbium doped fiber laser incorporating a spatial light modulator [PDF]
, 2014 We present a 2-mode group, switchable spatial mode erbium doped fiber laser incorporating a spatial light modulator. The laser wavelength can be tuned using an intra-cavity wavelength selective filter and provides >10dB extinction ratio between LP01 ...
Daniel, J.M.O. +13 more
core +1 more source
Advanced Functional Materials, EarlyView.A soft, dual‐channel hydrogel patch enables simultaneous detection of wound temperature and strain by integrating ion‐diffusion‐mediated thermoelectric and resistive sensing. The conformal design maintains stable performance during motion, capturing subtle inflammatory and mechanical changes for continuous wound monitoring.
Yu Fang +7 more
wiley +1 more source
IEEE Photonics Journal, 2016 We investigate the spectral linewidth and relative intensity noise (RIN) of an all-fiber single-frequency polarization-maintained master oscillator and power amplifier at 1925 nm.
Haiwei Zhang +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A compostable PGS soft surgical robot with interchangeable modules integrates transient Mo tactile and Si thermal sensors for dual feedback. The device preserves its function after clinical‐grade sterilization, demonstrates stable actuation and cardiac tissue grasping with real‐time in vivo pulsatile monitoring, and biodegrades post‐use with soil‐safe,
Minseong Chae +27 more
wiley +1 more source