检索结果-内蒙古大学图书馆

Quantum Dot waveguide array for Broadband Light Sources

PHOTONICS 2025年第3期12卷 212-212页

作者： Li, Dongyang Chu, Yufei Xu, Qingbo Liu, Dong Ruan, Junying Sun, Hao Li, Jianwei Guo, Chengde Pu, Xiaoyun Zhang, Yuanxian Yunnan Univ Sch Phys & Astron Kunming 650500 Peoples R China SUNY Stony Brook Sch Marine & Atmospher Sci Stony Brook NY 11790 USA

In this paper, we demonstrate a broadband and simultaneous waveguide array light source based on water-soluble CdSe/ZnS quantum dots (QDs). We initially measure the fluorescence intensity for various cladding solution concentrations along the fiber axis to assess their impact on the propagation loss;the experimental results show that the fluorescent intensity decreases with fiber length, with higher concentrations showing a more pronounced decrease. Then, we showcase a synchronous QD light source in an optofluidic chip that fluoresces in red, green, and blue (RGB) within a microfluidic channel. Finally, a 3 x 3 QD array of a fluorescent display on a single PDMS chip is demonstrated. The QD waveguide represents a compact and stable structure that is readily manufacturable, making it an ideal light source for advancing high-throughput biochemical sensing and on-chip spectroscopic analysis.

关键词： quantum dots broadband light source waveguide array evanescent wave

来源：评论

学校读者我要写书评

暂无评论

Observation of Topological Transmission in Terahertz Domino waveguide array

引用

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY 2023年第4期13卷 337-346页

作者： Hu, Pan Chen, Lin Shkurinov, Alexander Pavlovich Zhu, Yiming Zhuang, Songlin Univ Shanghai Sci & Technol Shanghai Key Lab Modern Opt Syst Shanghai 200093 Peoples R China Tongji Univ Shanghai Inst Intelligent Sci & Technol Shanghai 200092 Peoples R China Lomonosov Moscow State Univ Fac Phys Moscow 119991 Russia Lomonosov Moscow State Univ Int Laser Ctr Moscow 119991 Russia

In this article, we propose on-chip terahertz (THz) domino waveguide array structures that can enable the topological effect and enhance the robustness of THz transmission. THz topological effect (include topologically protected edge states and binding states) is excited by constructing kink and antikink structures in designed domino waveguide arrays. Furthermore, the robustness of topological waveguide arrays is successfully demonstrated. The topological transmission effects have been experimentally demonstrated using scanning near-field THz microscopy. Our study provides a new approach to study the topological photonic transport of waveguide arrays in the THz regime and has potential application in THz-integrated circuit.

关键词： Domino plasmons terahertz (THz) topological photonics waveguide array

来源：评论

学校读者我要写书评

暂无评论

High-resolution waveguide array-based astronomical spectrograph with cascaded phase modulation

引用

CHINESE OPTICS LETTERS 2025年第3期23卷 031301-031301页

作者： Zhong, Yunxian Lin, Dong Xu, Biao Zhu, Zhuangzhuang Tong, Xue Zhong, Qing Feng, Jijun He, Jinping Chinese Acad Sci Nanjing Inst Astron Opt & Technol Lab Solar & Space Instruments Nanjing 210042 Peoples R China Chinese Acad Sci Nanjing Inst Astron Opt & Technol CAS Key Lab Astron Opt & Technol Nanjing 210042 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Univ Chinese Acad Sci Nanjing 211135 Peoples R China Univ Shanghai Sci & Technol Engn Res Ctr Opt Instrument & Syst Sch Opt Elect & Comp EngnMinist Educ Shanghai Key Lab Modern Opt SystMinist Educ Shanghai 200093 Peoples R China

Integrated photonic spectrographs could provide a new generation of low-cost, highly integrated, high-performance optical terminal instruments for astronomical observations. However, these spectrographs still face the challenge of high spectral resolution. In this Letter, we demonstrate a cascaded phase-modulated waveguide array (CPMWA) spectrograph, with designed and measured spectral resolutions of 100,000 and 68,000, respectively. A spectral reconstruction method is proposed to minimize the influence of the phase error induced during the chip fabrication process and increase the spectral contrast to 20 dB. This type of spectrograph demonstrates promising potential for high-resolution spectrum observations in astronomy.

关键词： astronomical spectrograph waveguide array cascaded phase modulation high spectral resolution spectrum reconstruction

来源：评论

学校读者我要写书评

暂无评论

Morphology Engineering Enabled Mid-Infrared Ultra-Dense waveguide array with Low Crosstalk

引用

LASER & PHOTONICS REVIEWS 2024年第12期18卷

作者： Li, Ting Zhang, Hong Zhou, Peiji Lin, Yucheng Sun, Yuhan Liu, Yuheng Xu, Xiaochuan Zou, Yi ShanghaiTech Univ Sch Informat Sci & Technol Shanghai 201210 Peoples R China Harbin Inst Technol Natl Key Lab Laser Spatial Informat Harbin Inst Technol Campus Shenzhen 518055 Guangdong Peoples R China

The mid-infrared (MIR) band holds significant promise in various fields, including thermal imaging, spectroscopy sensing, infrared countermeasures, and free-space communication, due to its distinctive characteristics. Despite substantial efforts that have been dedicated to building on-chip photonic integrated circuits for MIR, enabling system miniaturization and broadening application scopes, the challenge of crosstalk among closely packed waveguides persists, hampering improvements in integration density and device performance. Here, a morphology engineering approach is proposed to tailor coupling and suppress crosstalk within a densely arranged waveguide array. These results demonstrate that by introducing a periodic Bezier curve to adorn the waveguide trajectory, coherent coupling can be disrupted, isolating each waveguide and minimizing crosstalk in the array. An experimentally demonstrated eight-channel waveguide array with a half-wavelength pitch operating at 3.55 mu m exhibits crosstalk suppression exceeding -29 dB, representing an 8 dB improvement compared to a sinusoidal trajectory. This methodology, offering precise control of on-chip light guiding, coupling, and routing, provides a promising perspective for high-density design in photonic integrated circuits at MIR. The mid-infrared (MIR) band holds significant promise in various fields. a morphology engineering approach is experimentally demonstrated using Bezier curves to mitigate crosstalk among densely arranged waveguides in the MIR band. The technique enables arbitrary modifications to the periodic trajectory via discrete points, presenting a compelling solution for precise control of on-chip light guiding, coupling, and routing in photonic integrated circuits at MIR. image

关键词： Bezier curve coupling mid-infrared waveguide array

来源：评论

学校读者我要写书评

暂无评论

Infrared miniature spectrograph based on polymer waveguide array

Infrared miniature spectrograph based on polymer waveguide a...

引用

Conference on AOPC - Novel Technologies and Instruments for Astronomical Multi-Band Observations

作者： Yang, Zhifang Jiang, Xinhong Chang, Qing Kong, Degui Zhang, Ziyang Heilongjiang Univ Coll Elect Engn Harbin 150080 Peoples R China Westlake Univ Lab Photon Integrat 18 Shilongshan Rd Hangzhou 310024 Zhejiang Peoples R China Commun Univ Zhejiang Coll Media Engn Hangzhou 310018 Peoples R China

ISBN: (数字)9781510650145

ISBN: (纸本)9781510650145;9781510650138

Astrophotonics aims to apply photonic technology to manipulate light from a telescope and process it for astronomical research purposes in an efficient and cost-effective way. In particular, using planar dispersive device for astronomical spectroscopic research is a promising method, as the compact and lightweight device could replace at least some of the bulky parts in the modern spectrograph. However, the migration of arrayed waveguide gratings from optical communication to astronomy must go through new designs with tailored properties. In this work, we first demonstrate an arrayed waveguide grating with over 100-nm free spectral range and further propose a new design of an integrated photonic spectrograph without any free-space optics. The design merges the wavefront modulation of a conventional lens into the length/phase variation in the waveguide array, in addition to the required difference to form the grating effect. The end effect is that the output light from the facets of the arrayed waveguides is not only separated by wavelength, but also focused onto a camera at a fixed distance. Simulation shows this design can reach high resolving power (> 7,000) with more compact size and most importantly, it eliminates the need to add any conventional lens in the optical path, in the sense of a truly integrated photonic spectrograph.

关键词： waveguide array integrated photonic spectrograph astrophotonics

来源：评论

学校读者我要写书评

暂无评论

Floquet spectrum and optical behaviors in dynamic Su–Schrieffer–Heeger modeled waveguide array

引用

Chinese Optics Letters 2021年第4期19卷 71-76页

作者： Ye Yu Yiwen Song Tao Chen Huaiqiang Wang Songlin Zhuang Qingqing Cheng School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China National Laboratory of Solid State Microstructures School of PhysicsNanjing UniversityNanjing 210093China

Floquet topological insulators(FTIs) have been used to study the topological features of a dynamic quantum system within the band structure. However, it is difficult to directly observe the dynamic modulation of band structures in FTIs. Here, we implement the dynamic Su–Schrieffer–Heeger model in periodically curved waveguides to explore new behaviors in FTIs using light field evolutions. Changing the driving frequency produces near-field evolutions of light in the high-frequency curved waveguide array that are equivalent to the behaviors in straight arrays. Furthermore, at modest driving frequencies,the field evolutions in the system show boundary propagation, which are related to topological edge modes. Finally, we believe curved waveguides enable profound possibilities for the further development of Floquet engineering in periodically driven systems, which ranges from condensed matter physics to photonics.

关键词： topological photonics insulator waveguide array Floquet

来源：评论

学校读者我要写书评

暂无评论

Effect of loss on transverse localization of light in 1D optical waveguide array in the presence of Kerr-type nonlinearity

引用

OPTICAL AND QUANTUM ELECTRONICS 2020年第1期52卷 4-4页

作者： Nezhad, M. Khazaei Mirshamsi, D. Zarif, F. Asadollah Rezaeiun, H. Rastegar Moghaddam Ferdowsi Univ Mashhad Dept Phys Fac Sci Mashhad Razavi Khorasan Iran

In this paper we have comprehensive study on the interplay among radiation loss, transverse disorder (diagonal and off-diagonal) and Kerr-type nonlinearity on the light propagation in 1D array of optical waveguides. Our numerical results demonstrate the presence of three distinguished regimes of transverse light expansion at different propagation distances. At short propagation distance, the Kerr-type nonlinearity are dominated and results in the transverse localization of light through the self-trapping mechanism. Radiation loss, causes the light escape from the injected guides, affect the light expansion in middle distance via broadening the light beam width. At longer distance the disorder terms led to the transverse localization of light, again. Also, we compared the propagation of light in edge and middle modes in the presence of the above effects. Our results show that the propagation distance of first localized regime for edge modes is larger than the middle modes since the edge modes can exchange energy with one of the left or right waveguides, while for middle modes there are two ways for energy exchange. Therefore the discrete diffraction can be diminished the nonlinear effects in middle modes faster than the edge modes.

关键词： Diagonal and off-diagonal disorder Radiation loss Kerr-type nonlinearity Edge and middle modes waveguide array

来源：评论

学校读者我要写书评

暂无评论

A rectangular slotted waveguide array for high power microwave applications

A rectangular slotted waveguide array for high power microwa...

引用

IEEE International Symposium on Antennas and Propagation (IEEE AP-S) / IEEE USNC-CNC-URSI Radio Science Meeting

作者： Martel, Cedric Univ Toulouse ONERA DEMR F-31055 Toulouse France

ISBN: (纸本)9781728166704

In this paper, a rectangular slotted waveguide array is proposed for high power microwave applications. The antenna has been designed in the context of implementing a non-lethal high power transmission device onboard a drone to stop and neutralize non-cooperative vehicles. The proposed antenna comprises 16 slotted waveguides and a beamforming network, which is folded to maximize the compactness of the antenna. It has been specifically designed to send maximum EM energy in the range 20 degrees-30 degrees off-axis direction to avoid undesired ground reflections during operations. It has the ability to withstand a peak power of 500 kW. A measured gain of 27.7 dBi has been obtained at 3.15 GHz. The antenna has been successfully used to stop a car engine from a distance of approximately 9 meters.

关键词： waveguide array high power microwave

来源：评论

学校读者我要写书评

暂无评论

Mode Division Multiplexing Based on Supermodes in Densely Packed Uniform waveguide array (DPUWA)

IEEE PHOTONICS JOURNAL

引用

IEEE PHOTONICS JOURNAL 2020年第2期12卷 1页

作者： Chen, Kaixuan Liu, Liu He, Sailing Zhejiang Univ Natl Engn Res Ctr Opt Instruments Ctr Opt & Electromagnet Res Zijingang Campus Hangzhou 310058 Peoples R China

A multimode bus structure consisting of densely packed uniform waveguide array (DPUWA) with a narrow gap of 150 nm is proposed. A compact and robust mode converter between DPUWA and a conventional wide multimode waveguide is designed with an insertion loss of <0.05 dB and crosstalk of <-20 dB in a wide wavelength range for three TE and three TM modes. Supermodes in the DPUWA can be routed and processed just like the mode in a single-mode waveguide by simply expanding the gap without any mode (de)multiplexer. Based on such ideas, compact DPUWA crossing/bending structures with losses of <0.2/0.09 dB and crosstalks of <-34/-30 dB for three TE modes are achieved.

关键词： Mode division multiplexing waveguide array multimode crossing multimode bending

来源：评论

学校读者我要写书评

暂无评论

A 3D Printed Ku-band waveguide array with Integrated waveguide Filter

A 3D Printed Ku-band Waveguide Array with Integrated Wavegui...

引用

International Radar Conference (RADAR)

作者： Mouthaan, Koen Chio, Tan-Huat Natl Univ Singapore Dept Elect & Comp Engn Singapore Singapore DSO Natl Labs Singapore Singapore

ISBN: (纸本)9781728126609

A 3D printed waveguide array with integrated filter in the K-u-band is presented. The antenna is suitable for a man-portable very small aperture terminal (VSAT) that has both military and civilian applications. The proposed design takes advantage of the recent advances in metal 3D printing to develop a very lightweight antenna array with good efficiency. The 3D printing fabrication process enables easy integration of a commensurate filter into the array without any significant increase in size and weight. Chokes that reduce back lobes are also incorporated into the design easily. The designed prototype also accommodates a commercially of-the-shelf (COTS) low noise block (LNB) for eventual system testing. Simulation results show excellent performance. Comparison of measured and simulated VSWR and radiation patterns shows discrepancies and investigations traced them to a fabrication defect.

关键词： waveguide array metal 3D printing man-portable satcom

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：