Results 21 to 30 of about 1,856 (216)
Micromachines, 2022 Electromagnetic (EM) absorbers and emitters have attracted much interest because of their versatile applications. A photonic heterostructure composed of silicon carbide (SiC) layer/germanium (Ge) cavity/distributed Bragg reflector (DBR) has been proposed.
Chengxuan Gong, Gaige Zheng
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Characterization of frequency drift of sampled-grating DBR laser module under direct modulation [PDF]
, 2008 The authors demonstrate the drift in frequency of a static sampled-grating distributed Bragg reflector (SG DBR) laser module when it is subjected to direct modulation.
Anandarajah, Prince M. +13 more
core +1 more source
High-Efficiency focusing grating coupler with distributed Bragg reflector
, 2023 We propose a high-efficiency silicon nitride focusing grating coupler with a bottom reflector. The bottom reflector consists of a distributed Bragg reflector (DBR) with a stack of Si3N4 and SiO2 layers.
Li xiangyu (14805472) +5 more
core +1 more source
Anomalous Mode Transitions in High Power Distributed Bragg Reflector Quantum Cascade Lasers
Nanoscale Research Letters, 2019 In this paper, an anomalous spectral data of distributed Bragg reflector (DBR) quantum cascade lasers (QCLs) emitting around 7.6 μm is presented. The two-section DBR lasers, consisting of a gain section and an unpumped Bragg reflector, display an output ...
Feng-Min Cheng +10 more
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All-fibre photonic crystal distributed Bragg reflector (PC-DBR) fibre laser
Optics Express, 2003 We describe an Er3+-doped aluminosilicate core photonic crystal fibre laser incorporating distributed Bragg reflectors written by two-photon 193nm irradiation through an optical phase mask as the feedback elements. The laser is diode pumped at 980nm and evidence of dual linewidth laser operation close to threshold is observed.
Canning, J. +5 more
openaire +2 more sources
IEEE 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
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Micromachines, 2018 We demonstrated two types of GaN-based flip-chip light-emitting diodes (FCLEDs) with distributed Bragg reflector (DBR) and without DBR to investigate the effect of dielectric TiO2/SiO2 DBR on optical and electrical characteristics of FCLEDs.
Shengjun Zhou +6 more
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Photonics, 2021 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.
Daibing Zhou +5 more
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Advanced Photonics Research, 2021 High‐contrast subwavelength grating (HCG) and distributed Bragg reflector (DBR) are demonstrated to be able to tailor the dispersion independently. Herein, it is found that multiple‐shape dispersions can be realized by a metastructure, which consists of ...
Jing Zhang, Anjin Liu
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AIP Advances, 2023 Photocathodes based on GaAs and other III–V semiconductors are capable of producing highly spin-polarized electron beams. GaAs/GaAsP superlattice photocathodes exhibit high spin polarization; however, the quantum efficiency (QE) is limited to 1% or less.
Jyoti Biswas +8 more
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