An efficient routing access method based on multi-agent reinforcement learning in UWSNs
Sign Up to like & getrecommendations! Published in 2022 at "Wireless Networks"
DOI: 10.1007/s11276-021-02838-1
Abstract: A large proportion of underwater data is collected in deep sea. Compared with the direct bottom-to-surface acoustic links, underwater sensor networks (UWSNs) with hierarchical network model topology are more efficient at transmitting huge amounts of… read more here.
Keywords: multi agent; agent reinforcement; reinforcement learning; method ... See more keywords
Transferrable dielectric DBR membranes for versatile GaN-based polariton and VCSEL technology
Sign Up to like & getrecommendations! Published in 2020 at "Microelectronic Engineering"
DOI: 10.1016/j.mee.2020.111276
Abstract: Abstract We present an innovative process to realize planar GaN microcavities, based on transferrable high-quality oxide-based Distributed-Bragg-Reflector (t-DBR) membranes. Unlike the widely used direct DBR deposition, which is not always feasible, the concept of t-DBR… read more here.
Keywords: pair; transferrable dielectric; dbr; dbr membranes ... See more keywords
Effect of distributed Bragg reflectors on optoelectronic characteristics of GaN-based flip-chip light-emitting diodes
Sign Up to like & getrecommendations! Published in 2024 at "Semiconductor Science and Technology"
DOI: 10.1088/1361-6641/ad4dd8
Abstract: Distributed Bragg reflectors have been widely utilized in GaN-based flip-chip light-emitting diodes (FCLEDs) owing to their excellent reflection performance. Recently, wide reflected angle DBR (WRA-DBR) has been suggested to enhance the optical characteristics of GaN-based… read more here.
Keywords: dbr; distributed bragg; gan based; stack dbr ... See more keywords
Dependability of Direct Behavior Rating Single- and Multi-Item Scales Across Raters and Occasions in Two School Subjects
Sign Up to like & getrecommendations! Published in 2019 at "Assessment for Effective Intervention"
DOI: 10.1177/1534508419836498
Abstract: Direct Behavior Rating (DBR) has been proposed as a promising approach to assess student behavioral progress in classroom settings. The current study examines raters and occasions as well as their interactions as sources of error… read more here.
Keywords: school subjects; dbr; raters occasions; item scales ... See more keywords
Reflectance bandwidth and efficiency improvement of light-emitting diodes with double-distributed Bragg reflector.
Sign Up to like & getrecommendations! Published in 2017 at "Applied optics"
DOI: 10.1364/ao.56.004375
Abstract: Distributed Bragg reflectors (DBR) with metal film on the bottom have been demonstrated to further improve the light output power of GaN-based light-emitting diodes (LEDs). Periods of TiO2/SiO2 stacks, thickness of metal film, and material… read more here.
Keywords: double dbr; distributed bragg; dbr; reflectance ... See more keywords
Numerical simulation and experimental investigation of GaN-based flip-chip LEDs and top-emitting LEDs.
Sign Up to like & getrecommendations! Published in 2017 at "Applied optics"
DOI: 10.1364/ao.56.009502
Abstract: We demonstrate a GaN-based flip-chip LED (FC-LED) with a highly reflective indium-tin oxide (ITO)/distributed Bragg reflector (DBR) ohmic contact. A transparent ITO current spreading layer combined with Ta2O5/SiO2 double DBR stacks is used as a… read more here.
Keywords: based flip; gan based; dbr; led ito ... See more keywords
Low-power-consumption modulation of short-cavity DBR laser on SiO2/Si substrate.
Sign Up to like & getrecommendations! Published in 2024 at "Optics express"
DOI: 10.1364/oe.514929
Abstract: We developed short-active-length distributed Bragg reflector (DBR) lasers to reduce the power consumption of chip-to-chip optical interconnects. These lasers have buried bulk InGaAsP waveguides to increase the coupling efficiency between the active region and DBR… read more here.
Keywords: laser; dbr; dbr lasers; power consumption ... See more keywords
Spatiotemporally tunable dark/bright and weak/strong mode coupling in all-dielectric DBR-metasurface-DBR structures.
Sign Up to like & getrecommendations! Published in 2025 at "Optics express"
DOI: 10.1364/oe.564668
Abstract: We report spatiotemporally tunable mode coupling between Fabry-Pérot (F-P) resonances and dark or bright modes in the weak- or strong-coupling regime in an all-dielectric coupled system, which consists of an F-P microcavity formed by two… read more here.
Keywords: dbr; mode coupling; dbr metasurface; weak strong ... See more keywords
InGaN Resonant-Cavity Light-Emitting Diodes with Porous and Dielectric Reflectors
Sign Up to like & getrecommendations! Published in 2020 at "Applied Sciences"
DOI: 10.3390/app11010008
Abstract: InGaN based resonant-cavity light-emitting diode (RC-LED) structures with an embedded porous-GaN/n-GaN distributed Bragg reflector (DBR) and a top dielectric Ta2O5/SiO2 DBR were demonstrated. GaN:Si epitaxial layers with high Si-doping concentration (n+-GaN:Si) in the 20-period n+-GaN/n-GaN… read more here.
Keywords: ingan resonant; dbr; cavity light; resonant cavity ... See more keywords
High-Performance Ultraviolet Photodetectors Based on Nanoporous GaN with a Ga2O3 Single-Crystal Layer
Sign Up to like & getrecommendations! Published in 2024 at "Nanomaterials"
DOI: 10.3390/nano14131165
Abstract: The utilization of a nanoporous (NP) GaN fabricated by electrochemical etching has been demonstrated to be effective in the fabrication of a high-performance ultraviolet (UV) photodetector (PD). However, the NP-GaN PD typically exhibits a low… read more here.
Keywords: layer; dbr; ga2o3; gan dbr ... See more keywords
25 Gb/s Data Transmission Using a Directly Modulated InGaAlAs DBR Laser over 14 nm Wavelength Tuning Range
Sign Up to like & getrecommendations! Published in 2021 at "Photonics"
DOI: 10.3390/photonics8030084
Abstract: With the deployment of the fifth generation of mobile networks (5G), 25 and 100 Gb/s directly modulated lasers and modules will become the mainstream optical transmitters. A directly modulated InGaAlAs/InP distributed Bragg reflector (DBR) laser… read more here.
Keywords: modulated ingaalas; data transmission; directly modulated; wavelength tuning ... See more keywords