Results 11 to 20 of about 2,825,028 (241)

Ultrahigh-efficiency wavelength conversion in nanophotonic periodically poled lithium niobate waveguides [PDF]

open access: yesOptica, 2018
Periodically poled lithium niobate (PPLN) waveguide is a powerful platform for efficient wavelength conversion. Conventional PPLN converters however typically require long device lengths and high pump powers due to the limited nonlinear interaction ...
Cheng Wang   +7 more
semanticscholar   +1 more source

Exchange of Heat Radiation between Human Body and Urban Environment: Characterization in Visible, Near-Infrared, and Far-Infrared Regions

open access: yesApplied Sciences, 2022
In urban environments, radiation energy from the sun becomes a heat load on the human body. The radiation energy can be divided into visible, near-infrared, and far-infrared wavelengths. Far-infrared radiation is re-emitted from structures that have been
Takahiro Kono   +3 more
doaj   +1 more source

Comparing Light—Emitting—Diodes Light Traps for Catching Anopheles Mosquitoes in a Forest Setting, Western Thailand

open access: yesInsects, 2021
Light traps are a common method for attracting and collecting arthropods, including disease vectors such as mosquitoes. Various types of traps have been used to monitor mosquitoes in a forest in Western Thailand. In this study, four Light Emitting Diodes
Pairpailin Jhaiaun   +6 more
doaj   +1 more source

Inverse design and demonstration of a compact and broadband on-chip wavelength demultiplexer [PDF]

open access: yesNature Photonics, 2015
An on-chip integrated wavelength demultiplexer designed using an inverse computational algorithm is experimentally demonstrated. 1,300 and 1,550 nm wavelength light is sorted in a device area of just 2.8 × 2.8 μm2.
Alexander Piggott   +5 more
semanticscholar   +1 more source

Optical detection and modulation at 2µm-2.5µm in silicon [PDF]

open access: yes, 2014
Recently the 2µm wavelength region has emerged as an exciting prospect for the next generation of telecommunications. In this paper we experimentally characterise silicon based plasma dispersion effect optical modulation and defect based photodetection ...
Ackert, J.J.   +7 more
core   +1 more source

Study the Effect of Laser Wavelength on ZnO Nanoparticle Characteristics Synthesized by Pulse Laser Ablation as an Antibacterial Application [PDF]

open access: yesEngineering and Technology Journal, 2022
In recent years, biologists, chemists, materials scientists, and engineers have become interested in Nano-sized particles because of their unique properties.
Hadeel Imran   +2 more
doaj   +1 more source

Cascaded wavelength conversion by four-wave mixing in a strained semiconductor optical amplifier at 10 Gb/s [PDF]

open access: yes, 1997
We demonstrate for the first time cascaded wavelength conversion by four-wave mixing in a semiconductor optical amplifier. Bit-error-rate performance of
Geraghty, David F.   +5 more
core   +1 more source

Research on Crop Growing Factory: Focusing on Lighting and Environmental Control with Technological Proposal

open access: yesEnergies, 2021
Recently, the interest in the plant factory-based crop production technologies is rising following the application of the smart farm technology to the agricultural arena.
Ki-Youn Kim, Jun-Ho Huh, Han-Jong Ko
doaj   +1 more source

Wavelength conversion at 10 Gb/s by four-wave mixing over a 30-nm interval [PDF]

open access: yes, 1998
We show that the use of a long semiconductor optical amplifier increases the error-free conversion interval of a four-wave mixing (FWM)-based wavelength converter.
D'Ottavi, A.   +6 more
core   +1 more source

A New Predictive Hypothesis for Phase Difference Reflection in GHz

open access: yesEnvironmental Sciences Proceedings, 2023
Wave phase difference is a fundamental property that characterises the relative behaviour of transmitted signals. It has significant roles in signal wave analysis and in interpreting various propagation phenomena, which are crucial when designing ...
Imadeldin Elsayed Elmutasim   +2 more
doaj   +1 more source

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