Recent Progress in Active Optical Metasurfaces
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Optical Materials"
DOI: 10.1002/adom.201801813
Abstract: Evolving from metamaterials, optical metasurfaces not only inherit their unprecedented flexibility in tailoring light–matter interaction but also the generally fixed response determined by the metaatoms’ geometries — an undesirable property that hinders the development of… read more here.
Keywords: recent progress; optical metasurfaces; progress active; active optical ... See more keywords
Which active optical sensor vegetation index is best for nitrogen assessment in irrigated cotton?
Sign Up to like & getrecommendations! Published in 2020 at "Agronomy Journal"
DOI: 10.1002/agj2.20120
Abstract: Funding information Cotton Incorporated Abstract Use of active optical sensors (AOS) in nitrogen (N) management of row crops continues to grow. Since the first studies in the mid-1990s, several commercial AOS are now available. Typically,… read more here.
Keywords: irrigated cotton; vegetation index; active optical; vegetation ... See more keywords
Evaluation of OptRxTM Active Optical Sensor to Monitor Soybean Response to Nitrogen Inputs.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the science of food and agriculture"
DOI: 10.1002/jsfa.10008
Abstract: BACKGROUND Active optical crop sensors have been gaining importance to determine in-season nitrogen (N) fertilization requirements for on-the-go variable rate applications. Although most of these active in-field crop sensors have been evaluated in maize (Zea… read more here.
Keywords: nitrogen; active optical; growing season; ndre values ... See more keywords
Modeling active optical networks
Sign Up to like & getrecommendations! Published in 2020 at "Physica D: Nonlinear Phenomena"
DOI: 10.1016/j.physd.2020.132631
Abstract: Abstract The recently introduced complex active optical network (LANER) generalizes the concept of laser system to a collection of links, building a bridge with random-laser physics and quantum-graphs theory. So far, LANERs have been studied… read more here.
Keywords: optical networks; modeling active; network; active optical ... See more keywords
Infrared-active optical phonons in LiFePO4 single crystals
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4995282
Abstract: Infrared-active optical phonons were studied in olivine LiFePO4 oriented single crystals by means of both rotating analyzer and rotating compensator spectroscopic ellipsometry in the spectral range between 50 and 1400 cm−1. The eigenfrequencies, oscillator strengths, and… read more here.
Keywords: phonons lifepo4; single crystals; active optical; phonon modes ... See more keywords
The role of directional LAI in determining the fAPAR–NDVI relationship when using active optical sensors in tall fescue (Festuca arundinacea) pasture
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Remote Sensing"
DOI: 10.1080/01431161.2017.1292069
Abstract: ABSTRACT Remote sensing based spectral indices, such as the normalized difference vegetation index (NDVI), are often used to estimate the fraction of absorbed photosynthetically active radiation (fAPAR) in plant canopies. Owing to similar changes in… read more here.
Keywords: fapar ndviaos; active optical; solar illumination; relationship ... See more keywords
A 10-Meter Active Optical Cable Utilizing POF With 4 × 10-Gb/s CMOS Transceiver Chipsets
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2019.2898481
Abstract: This paper presents a 10-m active optical cable (AOC) utilizing a graded-index plastic optical fiber (POF) for HDMI applications, where 4-channel 10-Gb/s/ch transceiver chipsets were implemented in 0.13-μm CMOS process and integrated upon a FR4… read more here.
Keywords: active optical; pof; transceiver chipsets; optical cable ... See more keywords
Active optical modulator based on a metasurface in the terahertz region.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.007778
Abstract: The characteristics of the electromagnetically induced transparency (EIT) analog exposed under different illumination powers have been investigated theoretically and experimentally. The EIT analog is composed of a fixed aluminum structure fabricated on the silicon substrate.… read more here.
Keywords: metasurface terahertz; based metasurface; terahertz region; active optical ... See more keywords
Proposal for a hybrid clock system consisting of passive and active optical clocks and a fully stabilized microcomb.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.482722
Abstract: Optical atomic clocks produce highly stable frequency standards and frequency combs bridge clock frequencies with hundreds of terahertz difference. In this paper, we propose a hybrid clock scheme, where a light source pumps an active… read more here.
Keywords: hybrid clock; optical clock; active optical; frequency ... See more keywords
Proximal Active Optical Sensing Operational Improvement for Research Using the CropCircle ACS-470, Implications for Measurement of Normalized Difference Vegetation Index (NDVI)
Sign Up to like & getrecommendations! Published in 2023 at "Sensors"
DOI: 10.3390/s23115044
Abstract: Active radiometric reflectance is useful to determine plant characteristics in field conditions. However, the physics of silicone diode-based sensing are temperature sensitive, where a change in temperature affects photoconductive resistance. High-throughput plant phenotyping (HTPP) is… read more here.
Keywords: active optical; proximal active; temperature; field ... See more keywords