Haisu Li
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View article: A triad of high-field magnetic transitions in V <sub>5</sub> S <sub>8</sub>
A triad of high-field magnetic transitions in V <sub>5</sub> S <sub>8</sub> Open
We report the observation of an unexpected phase transition at high magnetic fields between the spin-flop and spin-flip transitions in the d-electron antiferromagnetic metal V 5 S 8 . High-precision magnetic, thermal and electrical transpo…
View article: Applications of optical fiber sensors in marine observation: a review
Applications of optical fiber sensors in marine observation: a review Open
Accurate, continuous, and in situ monitoring of marine environmental parameters and their dynamic changes is essential for understanding oceanic processes, predicting ecological evolution, and ensuring safety in marine engineering and nati…
View article: Inverse optimization design of terahertz topological waveguides towards on-chip communication
Inverse optimization design of terahertz topological waveguides towards on-chip communication Open
This study proposes an inverse design framework for terahertz topological waveguides to achieve optimal on-chip communication performances. The topological waveguides are based on valley photonic crystals, which support two low-loss transm…
View article: Inverse optimization design of terahertz topological waveguides towards on-chip communication
Inverse optimization design of terahertz topological waveguides towards on-chip communication Open
This study proposes an inverse design framework for terahertz topological waveguides to achieve optimal on-chip communication performances. The topological waveguides are based on valley photonic crystals, which support two low-loss transm…
View article: Terahertz fiber devices
Terahertz fiber devices Open
The transmission line is one of the most fundamental components for the implementation of electromagnetic systems, such as electric cables and optical fibers for microwave and optic applications, respectively. The terahertz band, sandwiche…
View article: Additive manufacturing of planar waveguides for terahertz applications
Additive manufacturing of planar waveguides for terahertz applications Open
The emerging planar photonic crystal (PC) and effective medium (EM) waveguides are considered promising technical platforms for terahertz communications. Beyond short-scale connections and various signal processing functionalities, versati…
View article: Design and research on mode-selective couplers utilizing hollow-core negative curvature fiber
Design and research on mode-selective couplers utilizing hollow-core negative curvature fiber Open
We propose a novel mode-selective coupler (MSC) using hollow core negative curvature fiber (HC-NCF). The coupling characteristics among the transmission modes are analyzed utilizing the finite element method. The results indicate that dire…
View article: Design and research on mode-selective couplers utilizing hollow-core negative curvature fiber
Design and research on mode-selective couplers utilizing hollow-core negative curvature fiber Open
We propose a novel mode-selective coupler (MSC) using hollow core negative curvature fiber (HC-NCF). The coupling characteristics among the transmission modes are analyzed utilizing the finite element method. The results indicate that dire…
View article: Design and research of mode selection coupler by hollow core negative curvature fiber
Design and research of mode selection coupler by hollow core negative curvature fiber Open
We propose a novel mode-selective coupler (MSC) using hollow core negative curvature fiber (HC-NCF). The coupling characteristics among the transmission modes are analyzed utilizing the finite element method. The results indicate that dire…
View article: Design and research on mode-selective couplers utilizing hollow-core negative curvature fiber
Design and research on mode-selective couplers utilizing hollow-core negative curvature fiber Open
We propose a novel mode-selective coupler (MSC) using hollow core negative curvature fiber (HC-NCF). The coupling characteristics among the transmission modes are analyzed utilizing the finite element method. The results indicate that dire…
View article: 3D-printed terahertz subwavelength dual-core fibers with dense channel-integration
3D-printed terahertz subwavelength dual-core fibers with dense channel-integration Open
Terahertz (THz) fiber that provides high-speed connections is an essential component in THz communication systems. The emerging space-division-multiplexing technology is expected to increase the transmission capacity of THz communications.…
View article: Robustness of the modified multi-trench fiber design with two gaps
Robustness of the modified multi-trench fiber design with two gaps Open
We investigate the robustness of a modified multi-trench fiber (MTF) design with two gaps numerically. The excellent suppression of high-order modes is demonstrated over a wide range of the gap misalignment and the fundamental mode loss is…
View article: Research on Simultaneous Measurement of Magnetic Field and Temperature Based on Petaloid Photonic Crystal Fiber Sensor
Research on Simultaneous Measurement of Magnetic Field and Temperature Based on Petaloid Photonic Crystal Fiber Sensor Open
In this paper, we propose and design a magnetic field and temperature sensor using a novel petaloid photonic crystal fiber filled with magnetic fluid. The PCF achieves a high birefringence of more than 1.43 × 10−2 at the wavelength of 1550…
View article: Polarimetric parity-time symmetry fiber laser with switchable and tunable orthogonal single-polarization narrow-linewidth output
Polarimetric parity-time symmetry fiber laser with switchable and tunable orthogonal single-polarization narrow-linewidth output Open
Parity-time (PT) symmetry has garnered significant attention in the field of photonics owing to its remarkable properties. High-performance lasers, which require simultaneous gain and loss, serve as an ideal platform for harnessing the exc…
View article: Hydrogen peroxide oxidation of o-vanillin fluorescence kinetic fluorescence method for the determination of Mn(II)Hydrogen peroxide oxidation of o-vanillin fluorescence kinetic fluorescence method for the determination of Mn(II)
Hydrogen peroxide oxidation of o-vanillin fluorescence kinetic fluorescence method for the determination of Mn(II)Hydrogen peroxide oxidation of o-vanillin fluorescence kinetic fluorescence method for the determination of Mn(II) Open
In this experiment, a newly synthesized chromogenic agent o-vanillin fluorescence ketone was used to establish a method for the determination of Mn(II) by catalytic kinetic fluorescence. At the maximum excitation and emission wavelengths (…
View article: Study on the characteristics of initial shock waves generated by cylindrical charge for underwater explosion
Study on the characteristics of initial shock waves generated by cylindrical charge for underwater explosion Open
In order to provide a theoretical basis for studying the shock wave propagation and evolution generated by cylindrical charge of near-field underwater explosion, the characteristics of initial shock waves generated by cylindrical charge ar…
View article: Highly sensitive sensor for simultaneous underwater measurement of salinity and temperature based on highly birefringent asymmetric photonic crystal fiber
Highly sensitive sensor for simultaneous underwater measurement of salinity and temperature based on highly birefringent asymmetric photonic crystal fiber Open
This paper describes a novel compact fiber sensor with high sensitivity for the simultaneous measurement of underwater salinity and temperature by simulation. The structure is based on a highly birefringent, asymmetric, full-circular hole …
View article: Terahertz Hybrid Topological Chip for 10-Gbps Full-Duplex Communications
Terahertz Hybrid Topological Chip for 10-Gbps Full-Duplex Communications Open
Terahertz photonic chips play an important role in next-generation information systems, such as high-speed inter/intrachip connections. Here we report a hybrid hollow-core terahertz topological planar waveguide where topological silicon pi…
View article: 20 dB improvement utilizing custom-designed 3D-printed terahertz horn coupler
20 dB improvement utilizing custom-designed 3D-printed terahertz horn coupler Open
Terahertz band is envisaged to provide substantially higher capacity and much lower latency for wireless communications in contrast to microwave frequencies. Moving to higher frequencies comes with its own unique challenges to be addressed…
View article: Tunable and Switchable Dual-Wavelength SLM Narrow-Linewidth Fiber Laser with a PMFBG-FP Filter Cascaded by Multi-Ring Cavity
Tunable and Switchable Dual-Wavelength SLM Narrow-Linewidth Fiber Laser with a PMFBG-FP Filter Cascaded by Multi-Ring Cavity Open
A single longitudinal mode (SLM) dual-wavelength switchable erbium-doped fiber laser (DW-EDFL) based on polarization-maintaining fiber Bragg grating Fabry–Perot cavity (PMFBG-FP) cascaded multiple sub-ring cavities (MSCs) is proposed. A PM…
View article: Terahertz polarization-maintaining sampled gratings for dual-frequency filtering and dispersion compensation
Terahertz polarization-maintaining sampled gratings for dual-frequency filtering and dispersion compensation Open
Signal processing at terahertz regime is essential towards the next-generation wireless communication system. Here, we propose polarization-maintaining sampled gratings based on subwavelength dielectric rectangular-core waveguides. In each…
View article: Terahertz birefringent gratings for filtering and dispersion compensation
Terahertz birefringent gratings for filtering and dispersion compensation Open
The recent development of the terahertz waveguide makes it an excellent platform for integrating many intriguing functionalities, which offers tremendous potential to build compact and robust terahertz systems. In the context of next-gener…
View article: Terahertz birefringent gratings for filtering and dispersion\n compensation
Terahertz birefringent gratings for filtering and dispersion\n compensation Open
The recent development of the terahertz waveguide makes it an excellent\nplatform for integrating many intriguing functionalities, which offers\ntremendous potential to build compact and robust terahertz systems. In the\ncontext of next-ge…
View article: Terahertz Waveguide: 3D‐Printed Terahertz Topological Waveguides (Adv. Mater. Technol. 7/2021)
Terahertz Waveguide: 3D‐Printed Terahertz Topological Waveguides (Adv. Mater. Technol. 7/2021) Open
In article number 2100252, Muhammad Talal Ali Khan, Haisu Li, Shaghik Atakaramians and co-workers demonstrate an air-channel topological terahertz waveguide that has wider relative bandwidth (1.6 times) compared to dielectric counterpart a…