Explanipedia

Multi-object sperm detection and tracking based on enhanced YOLOv4 and improved DeepSORT Open

Jihong Pei, Zhenting Yang, Yang Zhao, Manqing Tian, Ni Zeng , et al. · 2025

Assisted reproductive technology plays a pivotal role in addressing infertility issues. Current computer-aided semen analysis systems face significant challenges in processing sperm microscopic images, particularly in detecting small sperm…

Skeleton action recognition via graph convolutional network with self-attention module Open

Min Li, Ke Chen, Yunqing Bai, Jihong Pei · 2024

Skeleton-based action recognition is an important but challenging task in the study of video understanding and human-computer interaction. However, existing methods suffer from two deficiencies. On the one hand, most methods usually involv…

Multiple Bound State Soliton Pulses in the All Polarization Maintaining Fiber Laser Open

Dalin Sun, Qi Zhao, Shaowen Chu, C. N. Cao, Jihong Pei , et al. · 2023

The bound state soliton pulse, a novel mode-locked output state of fiber lasers, has been studied extensively to gain a better understanding of soliton interactions and to explain the mechanism behind the generation of mode-locked pulses. …

Two Individual Super-Bound State Modes within Band Gap with Ultra-High Q Factor for Potential Sensing Applications in the Terahertz Wave Band Open

Yinbing An, Tao Fu, Chunyu Guo, Jihong Pei, Zhengbiao Ouyang · 2023

Bound states in the continuum (BICs) garnered significant research interest in the field of sensors due to their exceptionally high-quality factors. However, the wide-band continuum in BICs are noise to the bound states, and it is difficul…

Superbound state in photonic bandgap and its application to generate complete tunable SBS-EIT, SBS-EIR and SBS-Fano Open

Yinbing An, Tao Fu, Chunyu Guo, Jihong Pei, Zhengbiao Ouyang · 2023

Bound states in continua (BICs) have high-quality factors that may approach infinity. However, the wide-band continua in BICs are noise to the bound states, limiting their applications. Therefore, this study designed fully controlled super…

Weldability improvement of immiscible polycarbonate/GFRP by femtosecond laser surface treatment Open

Minqiu Liu, Yewang Chen, Ying Zhang, Junqing Zhao, D. P. Wang , et al. · 2023

Poor miscibility is an important reason for the non-weldable performance of most dissimilar polymers and their composites, and traditional surface treatments cannot effectively improve the weldability of dissimilar polymers. Therefore, the…

Maritime Infrared Target Detection Using a Dual-Mode Background Model Open

Anran Zhou, Weixin Xie, Jihong Pei · 2023

With the rapid development of marine business, the intelligent detection of ship targets has become the key to marine safety. However, it is difficult to accurately detect maritime infrared targets due to severe sea clutter interference in…

Nonconvex Tensor Relative Total Variation for Image Completion Open

Yunqing Bai, Jihong Pei, Min Li · 2023

Image completion, which falls to a special type of inverse problems, is an important but challenging task. The difficulties lie in that (i) the datasets usually appear to be multi-dimensional; (ii) the unavailable or corrupted data entries…

Improvement of bandwidth in a 100 kHz swept laser source with phase controllable signal driving Open

Zhiwei Yang, Xu Wu, Jihong Pei, Shuangchen Ruan · 2022

Swept source optical coherence tomography (SS-OCT) is a new noninvasive technique for assessing tissue. Although it has advantages, such as being label-free, noninvasive, and with high resolution, it also has drawbacks: there has been no i…

Tunable bilayer dielectric metasurface via stacking magnetic mirrors Open

Hao Song, Binbin Hong, Yanbing Qiu, Kuai Yu, Jihong Pei , et al. · 2022

Functional tunability, environmental adaptability, and easy fabrication are highly desired properties in metasurfaces. Here we provide a tunable bilayer metasurface composed of two stacked identical dielectric magnetic mirrors. The magneti…

Broadband Ultrashort Pulse Modulation of the Zeolite Based Single Wall Carbon Nanotube Open

Dalin Sun, Shaowen Chu, Lang Sun, Xintong Xu, Jihong Pei , et al. · 2022

Elongated-Hexagonal Photonic Crystal for Buffering, Sensing, and Modulation Open

Sayed Elshahat, Israa Abood, Zixian Liang, Jihong Pei, Zhengbiao Ouyang · 2021

A paradigm for high buffering performance with an essential fulfillment for sensing and modulation was set forth. Through substituting the fundamental two rows of air holes in an elongated hexagonal photonic crystal (E-PhC) by one row of t…

10 µJ noise-like pulse generated from all fiberized Tm-doped fiber oscillator and amplifier Open

Meng Wang, Junqing Zhao, Yewang Chen, Minqiu Liu, Deqin Ouyang , et al. · 2021

Herein, we presented a high energy noise-like (NL) pulse Tm-doped fiber laser (TDFL) system. Relying on the nonlinear amplifying loop mirror (NALM), stable noise-like pulses with coherence spike width of ∼317 fs and envelope width of ∼4.2 …

Progressive Kernel Pruning Based on the Information Mapping Sparse Index for CNN Compression Open

Jihong Zhu, Yang Zhao, Jihong Pei · 2021

Network pruning can effectively reduce a model's capacity and computational load, thereby making model deployment in mobile devices less difficult than that without pruning. To improve the pruning rate of the model while maintaining the ke…

SnSe Nanosheets: From Facile Synthesis to Applications in Broadband Photodetections Open

Xiangyang Li, Zongpeng Song, Huancheng Zhao, Wenfei Zhang, Zhenhua Sun , et al. · 2020

In recent years, using two-dimensional (2D) materials to realize broadband photodetection has become a promising area in optoelectronic devices. Here, we successfully synthesized SnSe nanosheets (NSs) by a facile tip ultra-sonication metho…

Dispersion engineering of W2 steeple-house-defect waveguide photonic crystal Open

Sayed Elshahat, Israa Abood, Zixian Liang, Jihong Pei, Zhengbiao Ouyang · 2020

An epitome for dispersion and buffering in a photonic crystal was set forth. Slots in the form of a line of contacted steeple-houses are implanted in a two-line photonic crystal waveguide (2LPCW) to form an irregular slot of steeple-house …

MoO<sub>3-x</sub> as a wideband optical saturable absorber for passively Q-switching ytterbium-, erbium-, and thulium-doped fiber lasers Open

Meng Wang, Shaolong Huang, Y. J. Zeng, Ruqing Huang, Dalin Sun , et al. · 2020

Wideband optical saturable absorbers (SA) are an ideal laser component for pulse laser generation in different wavelengths, which has attracted tremendous attention in recent years. Herein, a MoO 3-x -based novel wideband optical SA has be…

Hundred-kilowatt-level high peak power Tm∶YLF laser Open

Xikui Ren, Jihong Pei, Shuangchen Ruan · 2020

In order to develop a 2 μm band solid state laser with high peak power and high beam quality, we construct a laser diode single-end pumped Q-switch Tm∶YLF laser, the central wavelength of which is 1 879 nm and actively Q-switched using an …

Sporadic-Slot Photonic-Crystal Waveguide for All-Optical Buffers With Low-Dispersion, Distortion, and Insertion Loss Open

Sayed Elshahat, Israa Abood, Zixian Liang, Jihong Pei, Zhengbiao Ouyang · 2020

A novel structure is studied with implanting sporadic slots inside a photonic crystal waveguide (PCW) to form sporadic-slot PCW (SSPCW) for realizing compact, all-optical buffers with lowdispersion, distortion, and attenuation (DDA). We im…

Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse Open

Meng Wang, Yijian Huang, Zongpeng Song, Jincheng Wei, Jihong Pei , et al. · 2020

We report on mode-locked thulium-doped fiber lasers with high-energy nanosecond pulses, relying on the transmission in a semiconductor saturable absorber (SESA) and a carbon nanotube (CNTs-PVA) film separately. A section of an SMF–MMF–SMF …

Deep Non-Negative Matrix Factorization Architecture Based on Underlying Basis Images Learning Open

Yang Zhao, Huiyang Wang, Jihong Pei · 2019

The non-negative matrix factorization (NMF) algorithm represents the original image as a linear combination of a set of basis images. This image representation method is in line with the idea of "parts constitute a whole" in human thinking…

Fundamental and harmonic mode-locked h-shaped pulse generation using a figure-of-9 thulium-doped fiber laser Open

Zhijian Zheng, Xikui Ren, K. J. Zhu, Deqin Ouyang, Jinzhang Wang , et al. · 2019

Herein, we present a fundamental and harmonic mode-locked figure-of-9 thulium-doped fiber laser using a nonlinear amplifying loop mirror. The generated fundamental mode-locked h-shaped pulse is centered at 1889 nm with an average output po…

Supercontinuum Generation by Using a Highly Germania-Doped Fiber With a High-Power Proportion Beyond 2400 nm Open

Zhijian Zheng, Deqin Ouyang, Jinzhang Wang, Chunyu Guo, Jihong Pei , et al. · 2019

A high-power all-fiber supercontinuum (SC) source in a highly germania-doped fiber (GDF) pumped by a picosecond thulium-doped master oscillator power amplifier (MOPA) system is presented. By further optimizing the length of the GDF, the lo…

Magneto-Optical Isolator Based on Ultra-Wideband Photonic Crystals Waveguide for 5G Communication System Open

Yong Wang, Biaogang Xu, Dengguo Zhang, Shixiang Xu, Zheng Dong , et al. · 2019

This paper presents a novel magneto-optical isolator based on an ultra-wideband and high efficiency photonic crystals (PCs) waveguide and gyromagnetic ferrites. The three-dimensional numerical simulation finds that the photonic crystals wa…

Passively Q-switched thulium-doped fiber laser based on oxygen vacancy MoO<sub>3-x</sub> saturable absorber Open

Meng Wang, Shaolong Huang, Y. J. Zeng, Jingwei Yang, Jihong Pei , et al. · 2019

We reported on a passively Q-switched double-clad thulium-doped fiber laser by using oxygen vacancies (OVs) enriched with MoO3-x as a saturable absorber (SA). The MoO3-x was successfully embedded in polyvinyl alcohol and acted as the SA fo…

T-typed photonic crystal circulator with square lattice Al2O3 rods array and NiZn-ferrite posts Open

Yong Wang, Dengguo Zhang, Biaogang Xu, Zheng Dong, Jihong Pei , et al. · 2019

Table of contents Open

Liu Dongdong, Lei Niu, Jia Zhao, Zhang Yan, Jing Wang , et al. · 2019

Non-negative Radial Basis Function Neural Network in Polynomial Feature Space Open

Huiyang Wang, Yang Zhao, Jihong Pei, Zeng Dehuai, Meijuan Liu · 2019

Radial basis function neural network (RBFNN) is an effective nonlinear learning model, which has a strong nonlinear fitting capability. The hidden neurons and the weight play important roles in the neural network. In the existing researche…

Four Ports Double Y-Shaped Ultra-Wideband Magneto-Photonic Crystals Circulator for 5G Communication System Open

Yong Wang, Dengguo Zhang, Biaogang Xu, Zheng Dong, Xuanke Zeng , et al. · 2019

This paper presents a novel four ports double Y-shaped photonic crystals circulator with ultra-wide bandwidth in 5G millimeter wave band. Its insertion loss can be designed as low as 0.38 dB at 26.10 GHz while its optimal isolation is up t…

Improved Joint Probabilistic Data Association (JPDA) Filter Using Motion Feature for Multiple Maneuvering Targets in Uncertain Tracking Situations Open

En Fan, Weixin Xie, Jihong Pei, Keli Hu, Xiaobin Li , et al. · 2018

To track multiple maneuvering targets in cluttered environments with uncertain measurement noises and uncertain target dynamic models, an improved joint probabilistic data association-fuzzy recursive least squares filter (IJPDA-FRLSF) is p…

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