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| 1 | 电环形谐振腔表面几何参数对太赫兹超材料吸收体性能的影响(英文)显示文摘本文分析了电环形谐振腔的几何参数对超材料吸收体吸收率的影响。文中详细分析了电环形谐振腔参数、介电层(间隔物)厚度和电环形谐振腔厚度对超材料吸收体的影响,在此基础上,设置正交实验分析了几种参数的综合影响,最终获得超材料的理论吸收率。根据上述结果,制备了2个超材料吸收体的原理样机,经实验测得,原理样机的窄带吸收率高于98%。本文的研究成果为高性能吸收器的设计提供了指导。 | GOMON Daniel SEDYKH Egor RODRíGUEZ Sebastian IDELFONSO Tafur Monroy ZAITSEV Kirill VOZIANOVA Anna KHODZITSKY Mikhail | 2018 | 中国光学2018，11，1： | 3 |
| 2 | 电子束泵浦钙钛矿纳米晶随机激射的瞬态发光特性显示文摘为了满足瞬态光学系统对瞬时显像技术的要求,提出了一种基于钙钛矿纳米晶随机激射的瞬时发光方法.从CsPbBr3纳米晶薄膜的制备与表征出发,分析了该类有源薄膜的制备方法与手段.结合应用需要,设计了以微通道板为核心的电子束泵浦结构,并通过实验验证了CsPbBr3纳米晶薄膜在电子束泵浦下的激射效果,分析了其激射原理与物理现象.最后通过瞬时光泵浦的方法验证了CsPbBr3纳米晶薄膜的瞬时优势.该新型显像薄膜的瞬时探测系统中,不但具有较好的瞬态特性与时间分辨率,而且还可以利用电子束泵浦诱发激射来形成第二级的光放大,进而提升器件的整体探测能力. | 杜鹏 母一宁 任航 樊海波 朱焱 李彦正 IDELFONSO Monroy | 2020 | 光子学报2020，49，4： | 3 |
| 3 | High-speed ultra-wideband wireless signals over fiber systems:photonic generation and DSP detection显示文摘We firstly review the efforts in the literature on ultra-wideband (UWB)-over-fiber systems. Secondly,we present experimental results on photonic generation of high-speed UWB signals by both direct modulation and external optical injecting an uncooled semiconductor laser. Furthermore,we introduce the use of digital signal processing (DSP) technology to receive the generated UWB signal at 781.25 Mbit/s. Error-free transmission is achieved. | Timothy Braidwood Gibbon Idelfonso Tafur Monroy | 2009 | The Journal of China Universities of Posts and Telecommunications2009，16，4： | 2 |
| 4 | 50 GHz optical true time delay beamforming in hybrid optical/mm-wave access networks with multi-core optical fiber distribution显示文摘We propose and experimentally validate an optical true time delay beamforming scheme with straightforward integration into hybrid optical/millimeter(mm)-wave access networks. In the proposed approach, the most complex functions, including the beamforming network, are implemented in a central office, reducing the complexity and cost of remote antenna units. Different cores in a multi-core fiber are used to distribute the modulated signals to high-speed photodetectors acting as heterodyne mixers. The mm-wave carrier frequency is fixed to 50 GHz(VBand), thereby imposing a progressive delay between antenna elements of a few picoseconds. That true time delay is achieved with an accuracy lower than 1 ps and low phase noise. | álvaro Morales Idelfonso Tafur Monroy Fredrik Nordwall Tommi Sφrensen | 2018 | Chinese Optics Letters2018，16，4： | 2 |
| 5 | STOLAS: Switching technologies for optically labeled signals 显示文摘 | Kyfiakos G Vlachos Idelfonso T Monroy Koonen AMJ | 2003 | IEEE Optical Communications2003，11，： | 1 |
| 6 | In-House Networks Using Multimode Polymer Optical Fiber for Broadband Wireless Services显示文摘 | Ton Koonen Anthony Ng’oma Peter Smulders Henrie van den Boom Idelfonso Tafur Monroy Giok-Djan Khoe | 2003 | Photonic Network Communications2003，，2： | 1 |
| 7 | STOLAS:Switching Technologies for Optically Labeled Signals显示文摘 | Kyriakos G Vlachos Idelfonso T Monroy Koonen A M J | 2003 | IEEE Optical Communications2003，915，： | 1 |
| 8 | Bidirectional Radio-Over-Fiber Sytem with Phase-Modulation Downlink and RF Oscillator-Free Uplink Using a Reflective SOA显示文摘 | Yu Xianbin Timothy Braidwood Gibbon Idelfonso Tafur Monroy | 2008 | IEEE Photonics Technology Letters2008，20，24： | 1 |
| 9 | Range Extension and Channel Capacity Increase in Impulse-Radio Ultra-Wideband Communications显示文摘We theoretically analyze the channel capacity of a 5th-order Gaussian pulse-based ultra-wideband (UWB) system and experimentally demonstrate 2 Gbit/s UWB-over-fiber transmission systems incorporating wireless transmission. Both electrical and photonic UWB pulse generation methods are employed and its performance is compared. By utilizing optimum UWB pulse design and employing a digital signal processing (DSP) receiver, a bit-error-rate above the forward error correction (FEC) limit for 8 meters of wireless emission is obtained in our photonic generation UWB system. A noticeable increase in the channel capacity is achieved compared to previously reported results. | Roberto Rodes Antonio Caballero Jesper Bevensee Jensen Timothy Braidwood Gibbon Neil Guerrero Gonzalez Idelfonso Tafur Monroy | 2010 | Tsinghua Science and Technology2010，15，2： | 0 |
| 10 | Beam steering application for W-band data links with moving targets in 5G wireless networks显示文摘Abstract:Ubiquitous broadband Internet access is one of the major goals of the next generation of wireless communications.However,there are still some locations where this is diffcult to achieve.This is the case on moving vehicles and,particularly,on trains.Among the possible solutions to this problem,RoF(Radio-over-Fiber)architectures have been proposed as low-latency,cost-e ective candidates.Two elements are introduced to extend the RoF approach.First,the carrier frequency is raised into the W-band(75-110 GHz)to increase the available capacity.Second,a mechanical beam-steering solution based on a Stewart platform is adopted for the transmitter antenna to allow it to follow a moving receiver along a known path,thereby enhancing the coverage area.The performance of a system transmitting a 2.5 Gbit/s non-return-to-zero signal generated by photonic up-conversion over a wireless link is evaluated in terms of real-time BER(Bit Error Rate)measurements.The receiver is situated in di erent positions,and the orientation of the transmitter is changed accordingly.Values below the forward error correction limit for 7%overhead are obtained over a range of 60 cm around a center point situated 2 m away from the transmitter. | Alvaro Morales Sebastian Rodrguez Omar Gallardo Juan Jose Vegas Olmos Idelfonso Tafur Monroy | 2017 | Journal of Communications and Information Networks2017，2，2： | 0 |
| 11 | HVOF-sprayed HAp/S53P4 BG composite coatings on an AZ31 alloy for potential applications in temporary implants显示文摘Bioactive thermal spray coatings produced via high-velocity oxygen fuel spray(HVOF)from hydroxyapatite(HAp)and bioactive glasses(BG)have the potential to be employed on temporary implants due to the ability of both HAp and BG to dissolve and promote osseointegration,considering that both phases have different reaction and dissolution rates under in-vitro conditions.In the present work,75%wt.HAp-25%wt.S53P4 bioactive glass powders were HVOF-sprayed to obtain HAp/S53P4 BG composite coatings on a bioresorbable AZ31 alloy.The study is focused on exploring the effect of the stand-off distance and fuel/oxygen ratio variation as HVOF parameters to obtain stable structural coatings and to establish their effect on the phases and microstructure produced in those coatings.Different characterization techniques,such as scanning electron microscopy,X-ray diffraction,and Fourier transform infrared spectroscopy,were employed to characterize relevant structural and microstructural properties of the composite coatings.The results showed that thermal gradients during coating deposition must be managed to avoid delamination due to the high temperature achieved(max 550℃)and the differences in coefficients of thermal expansion.It was also found that both spraying distance and oxygen/fuel ratio allowed to keep the hydroxyapatite as the main phase in the coatings.In addition,in-vitro electrochemical studies were performed on the obtained HAp/S53P4 BG composite coatings and compared against the uncoated AZ31 alloy.The results showed a significant decrease in hydrogen evolution(at least 98%)when the bioactive coating was applied on the Mg alloy during evaluation in simulated body fluid(SBF). | Carlos A.Poblano-Salas John Henao Astrid L.Giraldo-Betancur Paola Forero-Sossa Diego German Espinosa-Arbelaez Jorge A.González-Sánchez Luis R.Dzib-Pérez Susana T.Estrada-Moo Idelfonso E.Pech-Pech | 2024 | Journal of Magnesium and Alloys2024，12，1： | 0 |
| 12 | 电子束泵浦钙钛矿量子点薄膜发光机理显示文摘为了对电子束泵浦钙钛矿量子点器件的建模与设计提供理论支撑,探究了电子束泵浦钙钛矿量子点膜层发光的微观过程,揭示了其能量转化模型与发光机理。首先从理论层面分析了电子束泵浦钙钛矿量子点发光与激射的微观物理过程,指出电子束泵浦量子点发光的激射阈值与发光阈值是构建其能量转化模型所需检测的宏观物理约束边界。分析讨论了其激射阈值与发光阈值的有效检测方法,并多次开展了具体的评估实验。最后,结合检测物理约束边界,模拟并构建了钙钛矿量子点膜层内部发光能量转化效率、纳米晶极化分布随电子束泵浦强度变化的关系。 | 任航 母一宁 杜鹏 李彦正 樊海波 王帅 Monroy Idelfonso Tafur Ibrahim Makram | 2022 | 光学学报2022，42，19： | 0 |
| 13 | Electron beam pumping improves the conversion efficiency of low-frequency photons radiated by perovskite quantum dots显示文摘This research argues that using an electron beam with high kinetic energy to pump perovskite quantum dots can significantly boost the efficiency of the low-frequency photon radiation conversion.Firstly,we measure the random lasing threshold and luminescence threshold of CsPbX_(3)films pumped by an electron beam.Then,we simulate the spatial distribution of the electron beams in CsPbX_(3)films.Combined with the above data,a low-frequency photon radiation conversion model based on the electron pumped perovskite quantum dots is presented.This could be a way to create a terahertz source with a high-power output or to multiply the terahertz power. | 杜鹏 母一宁 任航 Idelfonso Tafur Monroy 李彦正 樊海波 王帅 Makram Ibrahim 梁栋 | 2023 | Chinese Physics B2023，32，4： | 0 |
| 14 | Experimental Investigation of Transmission Properties and All-Optical Label Swapping of Orthogonal IM/FSK Labeled Signals显示文摘OpticallylabeledIM/FSKsignalsaretransmittedover50kmofSMFunderdifferentcompensationschemes.All-optical label swapping based on MZ-SOA and EAM is presented. Transmission followed by label swapping shows a 2dB overall power penalty. | Pablo V. Holm-Nielsen Christophe Peucheret Idelfonso Tafur Monroy Palle Jeppesen | 2003 | 光学学报2003，23，S1： | 0 |
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