Query：
学者姓名：王云新
Refining：
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract ：
太赫兹波作为一种穿透性强、具有非电离性和惧水性的电磁波，可以穿透多种非金属、非极性介质材料。太赫兹计算层析成像技术基于傅里叶中心切片定理和直线传播模型，通过记录不同投影角度下的强度数据，采用滤波反投影等重建算法获得样品三维吸收系数分布和内外部结构信息分布。随着太赫兹成像器件的不断发展和应用场景的拓展，已发展出多种照明模式、成像光路和重建算法，并已在文物保护、骨密度测量和无损检测领域开展了应用探索。概述太赫兹计算层析技术的基本原理，并从提高重建质量、分辨率和采集效率三方面具体介绍太赫兹计算层析成像技术的最新研究。
Keyword ：
照明光场调控 照明光场调控 三维成像 三维成像 太赫兹成像 太赫兹成像 计算层析 计算层析
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 戎路 , 刘乂铭 , 宁冉 et al. 太赫兹计算层析成像研究进展（特邀） [J]. | 激光与光电子学进展 , 2024 , 61 (02) : 207-224 . |
| MLA | 戎路 et al. "太赫兹计算层析成像研究进展（特邀）" . | 激光与光电子学进展 61 . 02 (2024) : 207-224 . |
| APA | 戎路 , 刘乂铭 , 宁冉 , 赵洁 , 王云新 , 王大勇 . 太赫兹计算层析成像研究进展（特邀） . | 激光与光电子学进展 , 2024 , 61 (02) , 207-224 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
A photonic-assisted reconfigurable LO harmonic downconverter with simultaneous image-rejection and RF self-interference cancellation (SIC) for in-band full-duplex communication is proposed and experimentally investigated based on a dual-polarization dual-parallel Mach-Zehnder modulator (DP-DPMZM). The received signal from the antenna, which includes the radio frequency (RF) signal, image signal (IM) and self-interference (SI) signal, is input into one sub-MZM of the X-DPMZM. The self-reference (SR) signal is input into the other. The Y-DPMZM is used to load the LO signal and is properly biased to obtain the high-order sideband of the LO signal, which was then set as the LO signal of the reconfigurable harmonic frequency downconverter. By matching the power and delay of the SR signal and changing the main bias of the X-DPMZM, the SI signal can be eliminated directly in optical domain. With power splitting after the output of the DP-DPMZM, the quadrature IF signals can be obtained by a photonics-based continuously adjustable phase shifter. Then, photonics image-rejection down-conversion based on phase cancellation is realized after a low-frequency electrical 90 & DEG; hybrid coupler (HC) combines the quadrature IF signals. Both theoretical and experimental investigations are performed. The results show that the SIC has a cancellation depth more than 32 dB for the 10-MHz bandwidth and greater than 19 dB for the 500-MHz bandwidth, the image-rejection has an image-rejection ratio larger than 31 dB for 10-MHz bandwidth and larger than 22 dB for the 100-MHz bandwidth, both in 2(nd)- and 3(rd)-order harmonic down-conversion mode. Experiments are also carried out on the reconfigurable LO harmonic downconverter with simultaneous SIC and image-rejection. A 16-quadrature amplitude modulation (16-QAM) -modulated RF signal is successfully down-converted to a 1-GHz intermediate frequency (IF) signal with self-interference and image frequency cancelled. It is verified that the RF signal can be well recovered from SI and IM signals by the proposed system.
Keyword ：
microwave photonics microwave photonics self-interference cancellation self-interference cancellation reconfigurable lo harmonic downconverter reconfigurable lo harmonic downconverter Image-rejection Image-rejection
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Yang, Dengcai , Wu, Fuzheng , Yang, Feng et al. Photonic-Assisted Reconfigurable LO Harmonic Downconverter With RF Self-Interference Cancellation and Image-Rejection [J]. | JOURNAL OF LIGHTWAVE TECHNOLOGY , 2023 , 41 (1) : 149-158 . |
| MLA | Yang, Dengcai et al. "Photonic-Assisted Reconfigurable LO Harmonic Downconverter With RF Self-Interference Cancellation and Image-Rejection" . | JOURNAL OF LIGHTWAVE TECHNOLOGY 41 . 1 (2023) : 149-158 . |
| APA | Yang, Dengcai , Wu, Fuzheng , Yang, Feng , Yin, Jing , Wang, Dayong , Wang, Yunxin et al. Photonic-Assisted Reconfigurable LO Harmonic Downconverter With RF Self-Interference Cancellation and Image-Rejection . | JOURNAL OF LIGHTWAVE TECHNOLOGY , 2023 , 41 (1) , 149-158 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
A novel type of photonic background-free multiband arbitrarily phase-coded microwave signal generator with power fading elimination capability is reported. An x-polarized phase modulated optical signal and a y-polarized radio frequency (RF) modulated harmonic single-sideband (HSSB) optical signal are produced based on a dual-polarization quadrature phase shift-keying modulator (DP-QPSKM). After polarization modulation to intensity modulation conversion, a microwave signal with arbitrarily phase encoding in multiple frequency bands is generated. Benefiting from the phase modulation state of the driven electrical coded signal, the generated arbitrarily phase-coded signal has no baseband components. Moreover, the equivalent HSSB modulation ensures the system can realize antidispersion transmission of one-to-multi base stations (BSs). The main distinct highlights of our generator are multifunction. The proposed single-modulator-based photonic scheme can achieve phase encoding in arbitrary format over multiple frequency bands and transmit over long-distance single-mode fiber with the elimination of power fading simultaneously. This work is pretty promising in multiband radar systems for one-to-multi BSs transmission and can increase the detection range, range resolution, Doppler tolerance, and sensitivity of objective recognition of radars.
Keyword ：
multiband radars multiband radars Optical polarization Optical polarization arbitrarily phase-coded microwave signals arbitrarily phase-coded microwave signals Optical modulation Optical modulation Antidispersion transmission Antidispersion transmission Microwave theory and techniques Microwave theory and techniques Microwave photonics Microwave photonics Radar Radar Microwave communication Microwave communication Encoding Encoding background-free background-free
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhu, Sha , Fan, Xiaojie , Cao, Xuhua et al. Photonic Generation and Antidispersion Transmission of Background-Free Multiband Arbitrarily Phase-Coded Microwave Signals [J]. | IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES , 2022 , 70 (4) : 2290-2298 . |
| MLA | Zhu, Sha et al. "Photonic Generation and Antidispersion Transmission of Background-Free Multiband Arbitrarily Phase-Coded Microwave Signals" . | IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 70 . 4 (2022) : 2290-2298 . |
| APA | Zhu, Sha , Fan, Xiaojie , Cao, Xuhua , Wang, Yunxin , Zhu, Ning Hua , Li, Ming et al. Photonic Generation and Antidispersion Transmission of Background-Free Multiband Arbitrarily Phase-Coded Microwave Signals . | IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES , 2022 , 70 (4) , 2290-2298 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
A photonics-assisted frequency conversion and self-interference cancellation approach is proposed and experimentally demonstrated for in-band full-duplex (IBFD) communication. Carrier suppressed single sidebands (CS-SSB) of the intermediate frequency (IF) signal and the local oscillator (LO) signal are simultaneously obtained through the X-DPMZM in a dual-polarization dual-parallel Mach-Zehnder (DP-DPMZM) modulator. A transmit signal with high purity is produced, and a shared LO optical sideband is also provided for the subsequent downconversion. The carrier suppressed double sideband (CS-DSB) modulation for the signal of interest (SOI) is achieved via the Y-DPMZM. The self-interference signal is suppressed by adjusting the bias voltage of its main MZM. An optical bandpass filter (OBPF) is combined to realize frequency downconversion. The experimental results show that the spurious-free dynamic range (SFDR3) is 102.6 dB/Hz(2/3) for frequency upconversion, a cancellation depth of more than 50 dB for single-frequency self-interference cancellation (SIC), and more than 22 dB for wideband SIC. The proposed link has superiority in multifunctionality, including in-band transmission, reception, and self-interference cancellation, with a shared LO.
Keyword ：
Frequency conversion Frequency conversion self-interference cancellation self-interference cancellation Interference cancellation Interference cancellation Optical polarization Optical polarization Silicon Silicon Optical modulation Optical modulation microwave photonics microwave photonics Microwave photonics Microwave photonics Microwave communication Microwave communication Optical filters Optical filters in-band full duplex com- munication in-band full duplex com- munication
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Dayong , Li, Peihan , Wang, Yunxin et al. Photonics-Assisted Frequency Conversion and Self-Interference Cancellation for In-Band Full-Duplex Communication [J]. | JOURNAL OF LIGHTWAVE TECHNOLOGY , 2022 , 40 (3) : 607-614 . |
| MLA | Wang, Dayong et al. "Photonics-Assisted Frequency Conversion and Self-Interference Cancellation for In-Band Full-Duplex Communication" . | JOURNAL OF LIGHTWAVE TECHNOLOGY 40 . 3 (2022) : 607-614 . |
| APA | Wang, Dayong , Li, Peihan , Wang, Yunxin , Li, Tao , Yang, Feng , Zhou, Tao et al. Photonics-Assisted Frequency Conversion and Self-Interference Cancellation for In-Band Full-Duplex Communication . | JOURNAL OF LIGHTWAVE TECHNOLOGY , 2022 , 40 (3) , 607-614 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The wavelength of terahertz wave is between those of infrared wave and microwave,with the characteristics of penetration,strong water absorption,and low photon energy,etc. Terahertz imaging has been are widely used in biomedical imaging,anti- terrorism security and non-destructive testing and other fields. The good penetration of terahertz wave is beneficial to detect the internal structure of objects. Phasecontrast imaging can better reflect the internal structure of objects,compared with simple terahertz intensity imaging. Continuous terahertz wave phase-contrast imaging can be divided into point- by- point scanning acquisition method with a single-point detector and full- field recording method with a surface array detector. The former has a low data acquisition rate and cannot image large samples quickly;the latter has a fast data acquisition rate,but also places higher demands on the detector's pixel size and dynamic range. Continuous terahertz wave digital holographic imaging records the hologram by a faceted detector,and then obtains the complex amplitude information of the sample by a reconstruction algorithm. According to different optical path structures,continuous terahertz wave digital holography can be divided into in- line digital holography and off- axis digital holography. In-line digital holography can make full use of the spatial bandwidth product of the detector,but requires a sufficiently high energy ratio of direct and diffracted light after passing through the sample, as well as the problem of twin image interference. Off-axis digital holography introduces a certain angle between the object light and the reference light,which solves the twin image problem and makes the reconstruction process simple.Off-axis image-plane digital holography uses a microscope objective to directly collect the imaging information of the object. Compared with off-axis Fresnel digital holography,this imaging method has fast computation and high resolution,and has been widely applied at visible wavelengths. Besides,this imaging method has been combined with some other high-resolution imaging techniques,resulting in multi- angle illumination digital holography, structured light illumination digital holography etc. However,due to the lack of terahertz devices and the strong absorption of terahertz by polar substances,the terahertz full- field phase-contrast imaging usually requires a compact and simple optical path structure. To the best of my knowledge,no relevant work on terahertz image-plane digital holography has been reported yet. In recent years,various terahertz devices such as lasers,detectors and gratings have been developed rapidly. New terahertz imaging elements such as large numerical aperture terahertz lenses and terahertz solid immersion objectives have emerged, providing strong hardware support for the development of terahertz imaging. In this paper,a continuous terahertz wave image-plane digital holographic imaging method based on TPX lens is proposed. The holographic recording and reproduction process is studied,and the quadratic phase distortion introduced by TPX lens is removed by surface fitting distortion correction. The digital holographic imaging system of terahertz image plane is built. The imaging resolution of the system is quantitatively analyzed by using an amplitude Siemens star sample. Then two phase samples of organic materials and biological samples are imaged. The experiment verifies the effectiveness of the phase contrast imaging method. The introduction of image plane imaging in terahertz band is conducive to improve the resolution and quality of terahertz imaging. It has a wide application prospect in biomedical imaging,nondestructive testing and other fields.
Keyword ：
Image-plane digital holography Image-plane digital holography Digital holography Digital holography Off-axis digital holography Off-axis digital holography Terahertz imaging Terahertz imaging Aberration correction Aberration correction
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang Yunxin , Zhu Jianglei , Zhao Jie et al. Continuous Terahertz Image-plane Digital Holography Based on TPX Lens [J]. | ACTA PHOTONICA SINICA , 2022 , 51 (4) . |
| MLA | Wang Yunxin et al. "Continuous Terahertz Image-plane Digital Holography Based on TPX Lens" . | ACTA PHOTONICA SINICA 51 . 4 (2022) . |
| APA | Wang Yunxin , Zhu Jianglei , Zhao Jie , Wang Dayong , Rong Lu , Lin Shufeng . Continuous Terahertz Image-plane Digital Holography Based on TPX Lens . | ACTA PHOTONICA SINICA , 2022 , 51 (4) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
提出了一种由三维打印技术制作的用于0.3 THz波束调控的二元相位型衍射透镜，可产生轴向焦深为25 mm、腰斑直径为1 mm的太赫兹聚焦波束。将该聚焦波束应用于连续太赫兹波计算机辅助层析成像，不仅将成像分辨率提高到1.5 mm，而且由于扩大了系统景深，提高了成像保真度。这类利用三维打印技术制作的二元衍射元件可有效应用于低频太赫兹波段的光束调控，为太赫兹成像系统的性能优化以及聚焦元件的设计制备提供一种有效途径。
Keyword ：
信息光学 信息光学 太赫兹计算机辅助层析 太赫兹计算机辅助层析 三维打印技术 三维打印技术 二元衍射透镜 二元衍射透镜 光束调控 光束调控
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王大勇 , 宁冉 , 金晓宇 et al. 3D打印衍射元件的高分辨太赫兹计算机辅助层析成像研究（特邀） [J]. | 光子学报 , 2022 , 51 (07) : 113-124 . |
| MLA | 王大勇 et al. "3D打印衍射元件的高分辨太赫兹计算机辅助层析成像研究（特邀）" . | 光子学报 51 . 07 (2022) : 113-124 . |
| APA | 王大勇 , 宁冉 , 金晓宇 , 戎路 , 赵洁 , 王云新 et al. 3D打印衍射元件的高分辨太赫兹计算机辅助层析成像研究（特邀） . | 光子学报 , 2022 , 51 (07) , 113-124 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明提出了一种基于偏振复用的微波光子雷达收发终端功能集成方法，用于解决现有方法中，由于雷达探测信号的产生和回波信号的接收终端由独立的部分实现，导致链路体积大、难于集成和易受外界干扰的问题。本发明利用偏振复用双驱动马赫‑曾德尔调制器的两个正交偏振态分别实现雷达探测信号的产生与目标回波信号的接收操作。通过调谐直流偏置电压，使上路子调制器工作在最大传输点，完成二倍频线性调频信号的产生，并为回波信号的去斜接收操作提供了必要的参考光信号。接下来，利用下路子调制器将目标回波信号调制到光载波上，并调谐其直流偏置电压，使其工作在正交偏置状态，为后续的光域去斜操作提供了前期基础。最后，利用偏振控制器和起偏器将参考光信号与回波光信号的偏振态混合，完成目标回波信号的去斜处理，实现目标距离信息的求解。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王云新 , 王大勇 , 侯雪缘 et al. 一种基于偏振复用的微波光子雷达收发终端功能集成方法 : CN202210804387.0[P]. | 2022-07-08 . |
| MLA | 王云新 et al. "一种基于偏振复用的微波光子雷达收发终端功能集成方法" : CN202210804387.0. | 2022-07-08 . |
| APA | 王云新 , 王大勇 , 侯雪缘 , 杨锋 , 何铮 , 姚锦川 . 一种基于偏振复用的微波光子雷达收发终端功能集成方法 : CN202210804387.0. | 2022-07-08 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明涉及一种基于振镜扫描系统的太赫兹计算层析三维成像方法，通过振镜扫描系统使得太赫兹光束快速转向，从而提供高质量且均匀的阵列太赫兹波光束，通过振镜畸变矫正方法使得经过振镜偏转的太赫兹波光束都能垂直穿透样品，进而在面阵探测器中获取到强度信息，最后使用计算层析重建算法，重建出无扫描畸变的样品三维内部结构吸收图。相比传统点扫太赫兹计算层析成像技术，该发明保证了重建质量的同时又提高了成像速度，是一种高保真度、快速的新型连续太赫兹波计算层析三维成像解决方案。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 戎路 , 李高超 , 王大勇 et al. 一种基于振镜扫描系统的太赫兹计算层析三维成像方法 : CN202210164446.2[P]. | 2022-02-22 . |
| MLA | 戎路 et al. "一种基于振镜扫描系统的太赫兹计算层析三维成像方法" : CN202210164446.2. | 2022-02-22 . |
| APA | 戎路 , 李高超 , 王大勇 , 赵洁 , 林述锋 , 王云新 . 一种基于振镜扫描系统的太赫兹计算层析三维成像方法 : CN202210164446.2. | 2022-02-22 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
一种基于单片空间光调制器的双目全息真3D近眼显示系统涉及3D显示领域。系统包括激光器、空间滤波器、准直透镜、反射镜、第一波片、第一分束镜、第一傅里叶透镜、频谱滤波器、第二波片、第二傅里叶透镜、第二分束镜和左右目对应的第一、二偏振片，激光器、空间滤波器和准直透镜用于产生系统所需的输入光源，傅里叶透镜用于为频域滤波产生全息图对应的傅里叶频谱，波片用于调整输入光、衍射再现光的偏振方向，使左右目再现光场偏振正交，偏振片用于检偏滤除双目信息中非对应通道的3D再现像。本发明能在现有基于单片空间光调制器全息3D显示视差受限的基础上提供双目视差增加立体视觉线索，从而缓解视疲劳问题，并且减少了系统对硬件的需求。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 林述锋 , 赵洁 , 戎路 et al. 一种基于单片空间光调制器的双目全息真3D近眼显示系统 : CN202211402941.9[P]. | 2022-11-10 . |
| MLA | 林述锋 et al. "一种基于单片空间光调制器的双目全息真3D近眼显示系统" : CN202211402941.9. | 2022-11-10 . |
| APA | 林述锋 , 赵洁 , 戎路 , 王大勇 , 王云新 . 一种基于单片空间光调制器的双目全息真3D近眼显示系统 : CN202211402941.9. | 2022-11-10 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明提出了一种高分辨率大测量范围的光延迟测量系统及方法，属于光延迟测量和微波光子学领域，可以实现大范围、高分辨率的光延迟测量。具体技术方案为激光源发射出的光载波进入双平行马赫增德尔调制器，线性扫频源发射线性扫频信号，信号进入90度电桥得到两路功率相同，相位差90度的射频信号，并分别输入到上下两个子调制器，通过IQ调制器控制器调整偏置电压，产生载波抑制单边带信号。该信号通过第一50：50保偏耦合器分成两路光信号，上路直接进入第二50 : 50耦合器，下路经过待测器件后进入第二50 : 50耦合器，第二50 : 50耦合器连接到光电探测器上进行拍频，光电探测器连接到频谱仪，检测两路信号的频率差并上传到控制与信号采集电路中，控制与信号采集电路根据频谱仪检测结果计算出待测光器件的光延迟。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 杨登才 , 冯凌阁 , 杨锋 et al. 一种高分辨率大测量范围的光延迟测量系统及方法 : CN202210657487.5[P]. | 2022-06-10 . |
| MLA | 杨登才 et al. "一种高分辨率大测量范围的光延迟测量系统及方法" : CN202210657487.5. | 2022-06-10 . |
| APA | 杨登才 , 冯凌阁 , 杨锋 , 王云新 , 王智勇 , 王卓 . 一种高分辨率大测量范围的光延迟测量系统及方法 : CN202210657487.5. | 2022-06-10 . |
| Export to | NoteExpress RIS BibTex |
Export
| Results： |
Selected to |
| Format： |
