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A photonic integrated circuit–based erbium-doped amplifier [PDF]

open access: yesScience, 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
semanticscholar   +1 more source

A SiGe BiCMOS Amplifier-Frequency Doubler Chain Operating for 284–328 GHz [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
This work describes the development of an amplifier frequency doubler chain (AFDC) operating at around 300 GHz based on SiGe BiCMOS technology.
Junghwan Yoo   +4 more
doaj   +1 more source

Packaging of an Amplifier Module for Sub-THz Wireless Transmission Based on Photonics [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
In this study, we have developed an amplifier waveguide module suitable for broadband communication in the sub-THz band. To achieve a waveguide module with excellent gain flatness characteristics, the effects of errors during the packaging procedures of ...
Sooyeon Kim   +8 more
doaj   +1 more source

Active odd-mode-metachannel for single-conductor systems

open access: yesOpto-Electronic Advances, 2022
Although tremendous efforts have been devoted to investigating planar single-conductor circuits, it remains challenging to provide tight confinement of electromagnetic field and compatibility with active semi-conductor components such as amplifier ...
Pei Hang He   +7 more
doaj   +1 more source

Faster, higher, stronger: timely and robust cell fate/identity commitment in stem cell lineages [PDF]

open access: yesOpen Biology, 2019
Precise specification of cell fate or identity within stem cell lineages is critical for ensuring correct stem cell lineage progression and tissue homeostasis.
Kun Liu, Ke Xu, Yan Song
doaj   +1 more source

Advanced Scheme to Generate MHz, Fully Coherent FEL Pulses at nm Wavelength

open access: yesApplied Sciences, 2021
Current FEL development efforts aim at improving the control of coherence at high repetition rate while keeping the wavelength tunability. Seeding schemes, like HGHG and EEHG, allow for the generation of fully coherent FEL pulses, but the powerful ...
Georgia Paraskaki   +7 more
doaj   +1 more source

The cochlear amplifier [PDF]

open access: yesCurrent 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
openaire   +3 more sources

Synchronization of pulsed and continuous-wave IMPATT oscillators in the millimeter wavelength range. Part 1. Generator designs and a generalized model of their external signal synchronization

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2021
Advances in the development of ultrahigh-frequency semiconductor electronics open wide opportunities for developing optimal schemes and designs of microwave power sources in the millimeter wavelength range providing high stability of the frequency and ...
Mykola Karushkin
doaj   +1 more source

Enhancement of irradiation resistance and experimental research of compact electronics for ITER Radial X-ray Camera [PDF]

open access: yesEPJ Web of Conferences, 2020
International Thermonuclear Experimental Reactor (ITER) Radial X-ray Camera (RXC) is installed in the equatorial port #12 (middle drawer) to measure the poloidal profile of the plasma x-ray emission with high spatial and temporal resolution. According to
Chen Kaiyun   +5 more
doaj   +1 more source

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