Results 1 to 10 of about 878,105 (387)
A photonic integrated circuit–based erbium-doped amplifier [PDF]
Science, 2022 Erbium-doped fiber amplifiers revolutionized long-haul optical communications and laser technology. Erbium ions could provide a basis for efficient optical amplification in photonic integrated circuits but their use remains impractical as a result of ...
Yang Liu +10 more
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Current Biology, 2004 What is it? It's the ear's built-in hearing aid. If your cochlea, the organ of hearing, did not amplify sounds the mechanical vibrations would be about hundred times too small to activate the sensory hair cells. The cochlear amplifier describes the collection of processes that increase sound vibrations in the inner ear.Why should we be interested in ...
Jonathan E. Gale, Jonathan Ashmore
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Optimizing the Nonlinearity and Dissipation of a SNAIL Parametric Amplifier for Dynamic Range [PDF]
Physical Review Applied, 2018 We present a new quantum-limited Josephson-junction-based 3-wave-mixing parametric amplifier, the SNAIL Parametric Amplifier (SPA), which uses an array of SNAILs (Superconducting Nonlinear Asymmetric Inductive eLements) as the source of tunable ...
N. Frattini +4 more
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Reconfigurable optomechanical circulator and directional amplifier [PDF]
Nature Communications, 2017 Non-reciprocal devices, which allow non-reciprocal signal routing, serve as fundamental elements in photonic and microwave circuits and are crucial in both classical and quantum information processing.
Zhen Shen +7 more
semanticscholar +1 more source
Reconfigurable Josephson Circulator/Directional Amplifier [PDF]
, 2015 Circulators and directional amplifiers are crucial non-reciprocal signal routing and processing components involved in microwave readout chains for a variety of applications.
K. Sliwa +6 more
semanticscholar +1 more source
High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique [PDF]
, 2010 Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially
Alou Cervera, Pedro +9 more
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A Load Modulated Balanced Amplifier for Telecom Applications
IEEE transactions on microwave theory and techniques, 2018 This paper presents the design and characterization of a load modulated balanced amplifier for telecom base station applications adopting a novel mode of operation.
R. Quaglia, S. Cripps
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Capacities of Quantum Amplifier Channels [PDF]
, 2017 Quantum amplifier channels are at the core of several physical processes. Not only do they model the optical process of spontaneous parametric down-conversion, but the transformation corresponding to an amplifier channel also describes the physics of the
Qi, Haoyu, Wilde, Mark M.
core +3 more sources
Ultraflexible organic amplifier with biocompatible gel electrodes
Nature Communications, 2016 In vivo electronic monitoring systems are promising technology to obtain biosignals with high spatiotemporal resolution and sensitivity. Here we demonstrate the fabrication of a biocompatible highly conductive gel composite comprising multi-walled carbon
T. Sekitani +10 more
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Phase-Preserving Linear Amplifiers Not Simulable by the Parametric Amplifier [PDF]
Physical Review Letters, 2020 It is commonly accepted that a parametric amplifier can simulate a phase-preserving linear amplifier regardless of how the latter is realized [Caves et al., Phys. Rev. A 86, 063802 (2012)]. If true, this reduces all phase-preserving linear amplifiers to a single familiar model. Here we disprove this claim by constructing two counterexamples. A detailed
Ranjith Nair +7 more
openaire +6 more sources