Results 1 to 10 of about 47,639 (261)

Investigation of Spectral Properties of DBR-Based Photonic Crystal Structure for Optical Filter Application

open access: yesCrystals, 2022
In this work, the spectral properties of distributed Bragg reflector-based photonic crystal (DBR-PhC) structures were studied for the near-infrared (NIR) range.
Umair Ahmed   +7 more
doaj   +2 more sources

Wide bandwidth and high resolution planar filter array based on DBR-metasurface-DBR structures [PDF]

open access: yesOptics Express, 2016
We propose and experimentally demonstrate a planar array of optical bandpass filters composed of low loss dielectric metasurface layers sandwiched between two distributed Bragg reflectors (DBRs). The two DBRs form a Fabry-P rot resonator whose center wavelength is controlled by the design of the transmissive metasurface layer which functions as a ...
Horie, Yu   +4 more
openaire   +5 more sources

Data Transmission Using a Directly Modulated Widely Tunable DBR Laser With an Integrated Ti Thin Film Heater

open access: yesIEEE Photonics Journal, 2018
We present data transmission using a directly modulated distributed Bragg reflector (DBR) laser having an integrated Ti thin film heater in the DBR section and butt-jointed InGaAsP as DBR material.
Xiao Xie   +7 more
doaj   +2 more sources

Optically pumped DBR-free semiconductor disk lasers

open access: yesOptics Express, 2015
We report high power distributed Bragg reflector (DBR)-free semiconductor disk lasers. With active regions lifted off and bonded to various transparent heatspreaders, the high thermal impedance and narrow bandwidth of DBRs are mitigated. For a strained InGaAs multi-quantum-well sample bonded to a single-crystalline chemical-vapor deposited diamond, a ...
Zhou, Yang   +3 more
openaire   +3 more sources

THE INFLUENCE OF A RESIDUAL REFLECTIVITY AT THE FRONT FACET OF A MULTISECTION MASTER-OSCILLATOR POWER-AMPLIFIER [PDF]

open access: yesJournal of Engineering Science (Chişinău), 2022
This paper reports on the theoretical end experimental investigation of the output characteristics of a multisection master-oscillator power-amplifier (MOPA).
GRIGORIEV, Eugeniu   +3 more
doaj   +1 more source

Improvement of DBR routing protocol in underwater wireless sensor networks using fuzzy logic and bloom filter

open access: yesPLoS ONE, 2022
Routing protocols for underwater wireless sensor networks (UWSN) and underwater Internet of Things (IoT_UWSN) networks have expanded significantly. DBR routing protocol is one of the most critical routing protocols in UWSNs. In this routing protocol, the
Hamed Karimi   +2 more
semanticscholar   +1 more source

Developing Online Learning Assessment Instrument for English Sentence Structure Course during Covid-19 Pandemic

open access: yesLangkawi: Journal of The Association for Arabic and English, 2021
Anchored by the need for constructing an online assessment which is mediated by honesty as the character value for grammar mastery among undergraduate students during Covid-19 pandemic, in the present study we developed a test of English Sentence ...
Emy Sudarwati   +3 more
doaj   +1 more source

51-nm Uniform-Intensity Tuning of Superstructure Grating Active-DBR Laser for 2-μm Wavelength Band

open access: yesIEEE Photonics Journal, 2022
To suppress the fluctuation of light intensity during wavelength tuning caused by carrier induced optical loss, we utilized a single quantum well (SQW) inserted into the bulk core layer of distributed Bragg reflectors (DBRs), called an active DBR ...
Takahiko Shindo   +7 more
doaj   +1 more source

Modal analysis and experimental investigation into vibration of the diamond-beaded rope based on lumped mass

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
The natural vibration characteristics of the diamond-beaded rope (DBR) based on lumped mass are analyzed both theoretically and experimentally. The dynamic model of the DBR is established by means of the multi-body dynamics theory.
Mengguang Fu, Peng Zhang, Fei Wang
doaj   +1 more source

Adolescenti autistici ad alto funzionamento: nuove riflessioni sull'efficacia di una tipologia di interventi integrati, sicuri e innovativi per il trattamento del disturbo ossessivo compulsivo

open access: yesPhenomena Journal, 2022
Questa recente pubblicazione nasce in relazione ad un Articolo di Ricerca pubblicato nel 2021 su Phenomena Journal e rappresenta una ulteriore profonda riflessione in merito all’efficacia che potrebbe avere una tipologia di Trattamento Integrato in ...
1Valentina Bellomo, 1 Elena Gigante, 1 Francesco Paolo Scarito
doaj   +1 more source

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