Results in Optics最新文献_第10页

Second-harmonic generation of ultrashort pulses in refractive index linearly modulating quantum dot structure 折射率线性调制量子点结构中超短脉冲的二次谐波生成

Results in Optics Pub Date : 2024-06-01 DOI: 10.1016/j.rio.2024.100706

Hakeem H. Al–Ameri , Muwaffaq Abdullah , Amin H. Al-Khursan

引用次数: 0

Analysis and mitigation of stimulated Raman scattering effects in OTDR monitored optical link 分析和缓解 OTDR 监测光链路中的受激拉曼散射效应

Results in Optics Pub Date : 2024-05-29 DOI: 10.1016/j.rio.2024.100699

A.H. Hussein , S.B.A. Anas , M.S. Ghazali , R. Amran , S. Yaakob , M.H.A. Bakar , K. Khairi , A. Ahmad , N.A. Ngah , S.Z. Muhd-Yassin , D.C. Tee , Y.I. Go

{"title":"Analysis and mitigation of stimulated Raman scattering effects in OTDR monitored optical link","authors":"A.H. Hussein , S.B.A. Anas , M.S. Ghazali , R. Amran , S. Yaakob , M.H.A. Bakar , K. Khairi , A. Ahmad , N.A. Ngah , S.Z. Muhd-Yassin , D.C. Tee , Y.I. Go","doi":"10.1016/j.rio.2024.100699","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100699","url":null,"abstract":"<div>The use of both traffic and optical time-domain reflectometer (OTDR) in active fiber monitoring will affect the dynamic range of the OTDR due to backscattered stimulated Raman scattering (SRS). In this paper, a simulation model and hardware experiment are proposed to investigate and mitigate the effects of a backscattered SRS signal on OTDR active fiber monitoring. A basic OTDR active fiber monitoring system based on non-amplified and amplified links was developed, where the effects of SRS backscattered noise, amplification noise, and power depletion were observed. The obtained simulation results indicated that the highest backscattered SRS was contributed by the booster amplifier link configuration, where the amplification of the OTDR signal increased drastically when the signal input power reached 10 dBm. The simulation setup was also used to mitigate the backscattered SRS by placing a chirped fiber Bragg grating (CFBG) at the OTDR to allow only the 1650 nm OTDR signal to be received by the OTDR, leaving other unwanted signals or noise behind. This mitigation successfully reduced other backscattered signals by approximately 4 dB. A proof-of-concept hardware experiment was conducted to test the feasibility of the proposed technique, and the result showed that the distortion in the trace was decreased and the OTDR penalty was also reduced to 0.41 dB.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100699"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000968/pdfft?md5=1c6b94f6db3b797ef7851e3d3a3ed3b7&pid=1-s2.0-S2666950124000968-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141263950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green synthesis of zinc oxide magnetic nanocomposite via zinc electroplating effluent: Its characterization and application as a photocatalyst 通过电镀锌废水绿色合成氧化锌磁性纳米复合材料：其特性及其作为光催化剂的应用

Results in Optics Pub Date : 2024-05-26 DOI: 10.1016/j.rio.2024.100698

Amir Azizi , Marziyeh Kazemi

{"title":"Green synthesis of zinc oxide magnetic nanocomposite via zinc electroplating effluent: Its characterization and application as a photocatalyst","authors":"Amir Azizi , Marziyeh Kazemi","doi":"10.1016/j.rio.2024.100698","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100698","url":null,"abstract":"<div>This study considered the green preparation, characterization, and investigation of the photocatalytic properties of zinc oxide magnetic nanostructure using electroplating industry effluent in the preparation. In this regard, the prepared structure was characterized by several common methods, including XRD, UV–Vis, FT-IR, DLS and VSM, and some of its properties were determined, including magnetic property, optical activity and surface charge. After determining the structure and confirming the optical activity of the prepared particles, its efficiency as a catalyst was evaluated in the photodegradation of methylene blue (MB) dye. Based on the results of the characterization of the structure of the ZnFe2O4 compound, the energy gap was calculated to be 3.46 eV. The results of DLS and VSM analyses showed that the prepared nanocomposite has average size, surface charge and magnetic properties equal to 65.5 nm, +95.94 mV and 8 emu/g, respectively. After confirming the photocatalytic properties of the prepared magnetic nanocomposite, the best operating conditions for the photocatalytic degradation of MB were determined to be 0.5 g of the photocatalyst, concentration of 10 mg/L of MB, pH equal to 9 and 1 mL of hydrogen peroxide (30 %) in 60 min (80 % degradation).</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100698"},"PeriodicalIF":0.0,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000956/pdfft?md5=d5bf581218d83e7c04aac13e661ca162&pid=1-s2.0-S2666950124000956-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141244234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization-resolved near-field characterization of coupling between a bus waveguide and a ring resonator 总线波导与环形谐振器之间耦合的偏振分辨近场特性分析

Results in Optics Pub Date : 2024-05-25 DOI: 10.1016/j.rio.2024.100695

V.V. Tkachuk , J.P. Korterik , L. Chang , H.L. Offerhaus

{"title":"Polarization-resolved near-field characterization of coupling between a bus waveguide and a ring resonator","authors":"V.V. Tkachuk , J.P. Korterik , L. Chang , H.L. Offerhaus","doi":"10.1016/j.rio.2024.100695","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100695","url":null,"abstract":"<div>Light propagation in Photonic integrated circuits (PICs), which can nowadays involve complex systems of light-guiding structures, is measured with different approaches(Nuzhdin et al., 2020, Lončar et al., 2002, Hopman et al., 2007, Morichetti et al., 2014, Sapienza et al., 2012, Vesseur et al., 2007). An interferometric polarization-sensitive measurement of the evanescent fields of these structures provides insight in the performance of the circuit detects possible malfunction with sub-wavelength precision(Engelen et al., 2007, Gersen et al., 2005, Barwick et al., 2009). We demonstrate a Near-field scanning optical microscopy (NSOM) measurement on coupled ring resonators that shows how the guided modes evolve as they propagate across the optical chip. Analysis of the measurements provides information about intensity distribution of the two polarization components (TE and TM) and their spatial confinement. The data validates our methodology and opens new possibilities for analysis of signal propagation in prototyping and optimization of integrated optical systems. Direct observation of polarization state of the guided modes allows for clear understanding of mode conversion in coupling systems.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100695"},"PeriodicalIF":0.0,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000920/pdfft?md5=2476ff3986bb6e3019c2fbb79a023260&pid=1-s2.0-S2666950124000920-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141250717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multimode gradient-index fiber coated with a blend of PEG and PVP as a humidity sensor 涂有 PEG 和 PVP 混合物的多模梯度指数光纤作为湿度传感器

Results in Optics Pub Date : 2024-05-20 DOI: 10.1016/j.rio.2024.100697

M. Mezel , M.B. Alsous , B. Abbas , K. Aljoumaa , B. Assfour , N. Mousa , I. Assaad

引用次数: 0

Optical properties of nanocomposites based on polypropylene modified by nanoparticles of oxide compounds 基于氧化物纳米颗粒改性聚丙烯的纳米复合材料的光学特性

Results in Optics Pub Date : 2024-05-20 DOI: 10.1016/j.rio.2024.100696

Mikhail M. Mikhailov, Vladimir A. Goronchko, Semyon A. Yuryev, Alexey N. Lapin, Dmitriy S. Fedosov

{"title":"Optical properties of nanocomposites based on polypropylene modified by nanoparticles of oxide compounds","authors":"Mikhail M. Mikhailov, Vladimir A. Goronchko, Semyon A. Yuryev, Alexey N. Lapin, Dmitriy S. Fedosov","doi":"10.1016/j.rio.2024.100696","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100696","url":null,"abstract":"<div>The optical properties in UV, visible and near IR spectral regions for nanocomposites based on polypropylene modified by nanoparticles of oxide compounds ZrO2, Al2O3, SiO2, MgO, TiO2, ZnO were studied. A shift of the main optical absorption edge to the short-wave region upon modification by dielectric nanoparticles (MgO, ZrO2, and Al2O3) was established. The absorption edge shifts to the long-wave region upon the introduction of semiconductor nanoparticles (ZnO, TiO2) and amorphous SiO2 particles. In all spectra, the absorption bands at 1200, 1400, and 1720 nm characterized by overtone vibrations of CH, CH2, and CH3 molecular groups were recorded. OH groups make a certain contribution to the bands at 1400 and 1720 nm. The dependence of the intensity of these absorption bands on the type and concentration of nanoparticles used in the modification of polypropylene was analyzed. X-ray diffraction analysis of the studied nanocomposites was carried out, the formation of β-PP was registered upon modification by Al2O3 nanoparticles. Photoluminescence spectra of nanocomposites were studied. It was found that the introduction of nanoparticles (except SiO2) does not lead to the formation of new luminescence bands in PP.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100696"},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000932/pdfft?md5=da4f437203e2731a7987011026f3cba9&pid=1-s2.0-S2666950124000932-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141077747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser-induced fluorescence spectroscopy of certain essential oils by blue and violet diode laser excitation 某些精油在蓝紫二极管激光激发下的激光诱导荧光光谱分析

Results in Optics Pub Date : 2024-05-15 DOI: 10.1016/j.rio.2024.100693

Kazi Monowar Abedin, Methaq Awadh Al-Yaqoobi

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Thermal lens investigation of the CdSe quantum dots using dual beam z-scan technique 利用双光束 Z 扫描技术对碲化镉量子点进行热透镜研究

Results in Optics Pub Date : 2024-05-10 DOI: 10.1016/j.rio.2024.100692

M.D. Zidan , A. Allahham , A. Ghanem , N. Mousa , B. Abdallah , A. Al Salman

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Graphene and ZnO NPs-enhanced photodetectors based on SiO NWs: Synthesis, characterization, and applications 基于 SiO NW 的石墨烯和 ZnO NPs 增强光电探测器：合成、表征和应用

Results in Optics Pub Date : 2024-05-08 DOI: 10.1016/j.rio.2024.100690

Sumaya J. Abbas Alshareefi, Amer Al-Nafiey

{"title":"Graphene and ZnO NPs-enhanced photodetectors based on SiO NWs: Synthesis, characterization, and applications","authors":"Sumaya J. Abbas Alshareefi, Amer Al-Nafiey","doi":"10.1016/j.rio.2024.100690","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100690","url":null,"abstract":"<div>In this study, we successfully synthesized and characterized silicon oxide nanowires/graphene/zinc oxide nanoparticles (SiO NWs/Graphene and ZnO NPs) hybrid nanostructures using pulsed laser deposition (PLD) technique. The characterization of the crystalline phase, morphology, and optical properties of the synthesized hybrid nanostructure systems revealed that the addition of graphene and ZnO NPs led to increased roughness values and changes in the surface topography of the films. The optical properties showed that the addition of graphene and zinc oxide enhanced the reflectivity in specific regions, including the UV and visible ranges, and improved the collection of charge carriers. The SiO NWs/Graphene and ZnO NPs was assessed as a photodetector and exhibited excellent performance, with high quantum efficiency, detectivity, and responsivity in the visible and near-infrared regions, making it a promising platform for the development of next-generation optoelectronic devices in various fields, including security, environmental monitoring, and medical diagnostics.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100690"},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000877/pdfft?md5=2db90bf7e5510dd6a86f431bd7a2b79a&pid=1-s2.0-S2666950124000877-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140917975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-efficiency anti-stokes Raman blue laser in CO2 enables high-luminance RGB laser-driven white light 二氧化碳中的高效反斯托克斯拉曼蓝激光器实现了高亮度 RGB 激光驱动白光

Results in Optics Pub Date : 2024-05-07 DOI: 10.1016/j.rio.2024.100691

Jinglu Sun , Xianglong Cai , Ming Xu , Yuxi Jia , Feiyu Qian , Jingwei Guo

{"title":"High-efficiency anti-stokes Raman blue laser in CO2 enables high-luminance RGB laser-driven white light","authors":"Jinglu Sun , Xianglong Cai , Ming Xu , Yuxi Jia , Feiyu Qian , Jingwei Guo","doi":"10.1016/j.rio.2024.100691","DOIUrl":"https://doi.org/10.1016/j.rio.2024.100691","url":null,"abstract":"<div>Stimulated Raman scattering (SRS) is an efficient nonlinear frequency conversion method, enabling simultaneous generation of red, green, and blue (RGB) lasers. In order to synthesize a white light source for laser display by SRS, a 532 nm laser was used as pump source, and high purity gaseous carbon dioxide (CO2) was used as the Raman active medium. First, by optimizing experimental parameters, with an f = 1.5 m focal lens, in 0.8 atm CO2 pumped at 304 mJ, a first-order anti-Stokes (AS1) 495 nm blue laser was achieved, with an energy of 31.9 mJ, peak power of 10.9 MW and conversion efficiency (CE) of 10.5 %. Then, Then, the second-order Stokes light (S2) at 624 nm, residual pump laser (S0) at 532 nm, and AS1 laser were utilized as RGB primary colors. By the variation of pressure below 1 atmosphere (atm), the laser-driven white light (LDWL) with adjustable correlated color temperature (CCT) below 4700 K were simulated. Finally, LDWL up to 2.6 × 1018cd/m2 of a CCT of 3300 K could be synthesized at an RGB power ratio of PR: PG: PB = 0.447:0.094:0.459, resulting in a white light power CE of 44.4 % and luminous efficacy of 113.7 lm/W. In addition, use of the 574 nm yellow Raman light is expected to realize a four-primary (RGBY) laser display scheme with higher Luminance and broader color gamut. Moreover, the feasibility of using a 515 nm Yb: YAG laser as pump source to widen the range of CCT and improve the brightness of LDWL was discussed.</div>","PeriodicalId":21151,"journal":{"name":"Results in Optics","volume":"16 ","pages":"Article 100691"},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666950124000889/pdfft?md5=939c1b0648fba0243b2e2c760c7b915c&pid=1-s2.0-S2666950124000889-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140947425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0