Article
Physics, Applied
Feng Yin, Kelan Yan, Liming Shen, Ningzhong Bao
Summary: This study reports the preparation of metallic ferromagnetic selenospinel composites using a solid-state reaction process, successfully demonstrating double negative properties with negative electric permittivity and negative magnetic permeability. The research provides theoretical insights and mechanisms for understanding and tuning the properties of double negative metamaterials.
APPLIED PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Kelan Yan, Liming Shen, Feng Yin, Guicun Qi, Xiaohong Zhang, Runhua Fan, Ningzhong Bao
Summary: This paper introduces a facile method for synthesizing La0.5Sr0.5MnO3 with negative properties, which can achieve negative permittivity and permeability simultaneously within a certain frequency range. By adjusting factors such as electron concentration, lattice symmetry, and magnetic resonance, the performance of this material can be controlled.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Qiang Li, Guangzhou Zhu
Summary: The study investigates the resonance behavior of LaFeO3 in the GHz range, demonstrating the ability to tune negative permittivity and negative magnetic permeability peaks within specific frequency ranges by controlling synthesis parameters. This material shows potential for applications in electromagnetic metamaterials, where it could be used to increase antenna gain or control microwave transmission.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Eugene Koreshin, Ivan Matchenya, Grigoriy Karsakov, Denis Ilin, Ivan Iorsh, Pavel Belov
Summary: In this study, we extensively investigate the screening effect in anisotropic artificial media made of parallel metal wire arrays, both analytically and experimentally. Our findings reveal that the electrostatic potential distribution generated by a probe charge is spherically symmetrical near the source. We also derive and experimentally confirm a boundary condition for the wire medium. Despite the finite size of the wire arrays, the symmetry of the electric field remains unaffected near the charge, but a local maximum potential occurs at the boundary. The screening depth of the wire medium depends on its geometrical parameters and is proportional to the plasma frequency, suggesting a method to determine the plasma frequency through static E-field measurement.
Article
Physics, Applied
Yang Yu, Yanqi Yin, Ruiyu Bai, Yunzhou Hu, Bo Li, Michael Yu Wang, Guimin Chen
Summary: This study investigates the multistable behaviors of a ribbon kirigami with a wide cut, exploring the stable configurations and energy barriers between them. The introduction of the wide cut results in local symmetry breaking, enabling bidirectional transition of the stable configurations. The geometries of major cuts and the stretch level enable reprogrammable dynamic behaviors, and a kirigami-Morse code system is presented.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Multidisciplinary
Xavier Romain, Riccardo Degl'Innocenti, Fadi Baida, Philippe Boyer
Summary: This article investigates the ability of stacked metallic wire-grid metasurfaces to induce tunable Fano resonances, demonstrating this theoretically and experimentally. The findings suggest that polarization can be used as an additional degree of freedom for designing optical resonators with enhanced and tunable properties. Fano resonance is an important phenomenon for optical devices, particularly for applications in switching and sensing.
COMMUNICATIONS PHYSICS
(2021)
Article
Physics, Applied
Shuanglong Liu, Fei Chen, Tian Yang, Robert G. Parker, Pai Wang, Tianzhi Yang
Summary: This article reports an easy-to-make, resonance-based mechanism for achieving negative rotational inertia. The device consists of a heavy inner core, a lightweight outer shell, and rubber connections. The authors theoretically predict and experimentally observe negative rotational inertia in the range of 100-230 Hz. They also investigate the relationship between the bandwidth of negative inertia and the bandgap in a chain of negative-inertia units, revealing a unique property and potential applications in metamaterial designs.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
J. I. A. N. Z. H. O. U. Huang, Bin Hu, G. U. O. C. U. Wang, Z. O. N. G. Y. U. A. N. Wang, J. I. N. L. O. N. G. LI, J. U. A. N. Liu, Y. A. N. Zhang
Summary: This work demonstrates a reconfigurable THz phase modulator with 5x5 independently tunable units enabled by switching the voltages applied on 10 graphene ribbons. The efficiency of the device is enhanced by 2.7-3.6 times under different graphene chemical potentials through introducing quasi bound states in the continuum resonance using a designed double C-shaped antenna. Experimental results show the formation of a focus with a changed focal length from 14.3mm to 22.6mm. This work provides potential for compact THz spatial light modulators that may be applied in THz communication, detection, and imaging.
PHOTONICS RESEARCH
(2023)
Article
Physics, Applied
Minh Q. Dinh, Minh Thuy Le, Son Tung Ngo, Tran Van Huynh, Nguyen Thanh Tung
Summary: Metamaterial absorbers typically rely on resonant structures and a metallic reflector to achieve absorption, but this study introduces a novel approach of overlapping magnetic and electric resonances in a conventional cut-wire-pair metamaterial to achieve high absorption rates. The experimental results confirm the effectiveness of resonance superposition in achieving perfect absorption, with the fabricated prototype absorbing up to 82% of incident waves at 56 THz. The unique design of this metamaterial absorber sets it apart from traditional absorbers by offering high absorption strength and the potential for transmission.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
Tianlong Wen, Pengqian Wan, Chang Lu, Dainan Zhang, Min Gao, Yuan Lin, Qiye Wen, Yulong Liao, Huaiwu Zhang, Zhiyong Zhong
Summary: Active modulation of terahertz wave can be achieved by joining two terahertz metamaterials with a conductivity variable VO2 patch. The addition of a cut-wire metamaterial affects the electromagnetic response of the joined metamaterial dimer, resulting in dual resonance dips in the transmission spectrum for both insulating and conducting states of the VO2 patches.
Article
Physics, Applied
Afshin Moradi, Nurhan Tuerker Tokan
Summary: In this study, the magnetostatic microwave propagation in a long, circular waveguide filled with an anisotropic uniaxial magnetic medium (such as metamaterial with split-ring resonators) is investigated. The existence of these magnetostatic waves is attributed to the anisotropic property of the system, and their characteristics are determined through theoretical analysis.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Esha V. Shah, Ulrich Kleinekathoefer, Thomas Frauenheim, Debesh R. Roy
Summary: This study proposes a novel pathway of observing transverse transport through nucleobase-pairs of a DNA molecule and finds that the single base-pair G-C and its parallel circuit exhibit superior transport in DNA wires. In comparison with a short DNA molecule, the parallel base-pair circuits enhance transport through quantum interference.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Hai Hu, Na Chen, Hanchao Teng, Renwen Yu, Mengfei Xue, Ke Chen, Yuchuan Xiao, Yunpeng Qu, Debo Hu, Jianing Chen, Zhipei Sun, Peining Li, F. Javier Garcia de Abajo, Qing Dai
Summary: Negative refraction is achieved using hybrid topological polaritons in van der Waals heterostructures, allowing for gate-tunable manipulation of mid-infrared radiation. Wide-angle negatively refracted polaritons are observed in partially decorated a-MoO3 films with graphene, demonstrating reversible nanoscale focusing. This technique offers possibilities for electrically tunable super-resolution imaging, nanoscale thermal manipulation, enhanced molecular sensing, and on-chip optical circuitry.
Article
Materials Science, Multidisciplinary
Zheren Cai, Shengdong Zhao, Zhandong Huang, Zheng Li, Meng Su, Zeying Zhang, Zhipeng Zhao, Yanlin Song
Summary: This paper verifies the negative refraction and acoustic imaging capacity of acoustic metamaterials composed of 2D underwater elastic shell encapsulated bubble arrays, and discusses the influence of thermoviscous loss and damping on imaging.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Automation & Control Systems
Conghui Lu, Xiutao Huang, Cancan Rong, Xiong Tao, Yingqin Zeng, Minghai Liu
Summary: This article introduces a novel asymmetric wireless power transfer system by integrating with two kinds of dual-band metamaterials, suitable for recharging portable electronic devices. Simulation and experimentation verify the efficiency enhancement of the system using dual-band negative permeability metamaterial.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Chemistry, Analytical
Phan Hong Phuoc, Nguyen Ngoc Viet, Le Viet Thong, Chu Manh Hung, Nguyen Duc Hoa, Nguyen Van Duy, Hoang Si Hong, Nguyen Van Hieu
Summary: The study explored the gas-sensing performance of composite nanofibers with internal and external hetero-junctions of ZnO-SnO2, revealing enhanced response compared to mixed nanofibers. The gas-sensing mechanism of the hetero-nanojunctions was analyzed, attributing the remarkable gas sensing performance to the formation of internal heterojunctions.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Nguyen Hong Son, Nguyen Giang Nam, Nguyen Tien Anh, Ta Ngoc Bach, Luu Thi Lan Anh, Nguyen Thanh Tung, Nguyen Ngoc Trung, Nguyen Duc Chien, Nguyen Huu Lam, Cong Tu Nguyen
Summary: Tungsten oxide hydrate nanoplates were functionalized with AgNO3 via one-step acid precipitation at room temperature, producing a nanocomposite of Ag2WO4 and WO3.H2O. The functionalization led to increased specific surface area and enhanced photocatalytic activity under visible light.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Thao Dao Vu Phuong, Thuy-Linh Phi, Bui Huu Phi, Nguyen Van Hieu, Son Tang Nguyen, Tu Le Manh
Summary: This study provides a comprehensive investigation into the early stage of copper electrodeposition from a choline chloride-urea deep eutectic solvent (DES), revealing that copper deposition can be directly performed from a DES containing a small amount of water using a single potentiostatic step technique. Theoretical modeling confirms the mechanism of direct electronucleation of copper nanoparticles in the DES, and kinetic parameters play a crucial role in controlling the morphology and chemical composition of the obtained nanoparticles, as verified by surface characterization techniques.
JOURNAL OF NANOMATERIALS
(2021)
Article
Physics, Applied
Matias Bejide, Andre Vantomme, Nguyen Thanh Tung, Ewald Janssens
Summary: The extended two-temperature heat transfer model proposed in this study can be used to investigate the heat flow in multilayer antennas. The thermal properties of the buffer layer can control the heat flow dynamics in layered materials, and a large buffer layer electron-phonon coupling can induce non-intuitive reverse internal heat flow and transient energy retention on short timescales.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Minh Thuy Le, Van Duc Ngo, Thanh Tung Nguyen, Quoc Cuong Nguyen
Summary: This study introduces a comprehensive dual-band ambient RF energy harvesting system, consisting of rectenna and power management circuit. The system achieves high efficiency and is suitable for supplying low-power wireless sensor nodes for indoor applications.
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES
(2022)
Article
Multidisciplinary Sciences
Nguyen Minh Tam, Trung Hai Nguyen, Vu Thi Ngan, Nguyen Thanh Tung, Son Tung Ngo
Summary: This study demonstrates the efficiency of umbrella sampling (US) simulation in determining the unbinding pathway and binding affinity of small molecule inhibitors to SARS-CoV-2 Mpro. The accuracy of US is comparable to other methods and provides detailed insights into the binding mechanism between inhibitors and SARS-CoV-2 Mpro.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Van Hoang Nguyen, Dung T. Nguyen, T. Tung Nguyen, H. Phuong T. Nguyen, H. Binh Khuat, T. Hung Nguyen, V. Khanh Tran, S. Woong Chang, Phuong Nguyen-Tri, D. Duc Nguyen, Duc Duong La
Summary: In this study, activated carbon with an ultra-high surface area was fabricated from sawdust by simple, one-step chemical activation. The sawdust activated carbon exhibited a high and rapid removal efficiency toward Rhodamine B, with a removal percentage of nearly 100% after 10 min at an RhB concentration of 10 ppm. The effect of the pH solution on RhB removal performance by sawdust activated carbon showed that the sAC absorbed more than 90% of the RhB in all the pH at room temperature solutions.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Optics
Duong Thi Ha, Bui Son Tung, Bui Xuan Khuyen, Thanh Son Pham, Nguyen Thanh Tung, Nguyen Hoang Tung, Nguyen Thi Hoa, Vu Dinh Lam, Haiyu Zheng, Liangyao Chen, YoungPak Lee
Summary: A dual-band, polarization-insensitive, ultrathin and flexible metamaterial absorber was demonstrated based on high-order magnetic resonance. The absorption performance was investigated for both planar and bending models, showing a single peak at 4.3 GHz with 98% absorption in the planar model and additional high-order peaks in the bending structure. This work could be beneficial for future device realization and development, such as emitters, detectors, sensors, and energy converters.
Article
Optics
Le Van Long, Nguyen Sy Khiem, Bui Son Tung, Nguyen Thanh Tung, Trinh Thi Giang, Pham Thanh Son, Bui Xuan Khuyen, Vu Dinh Lam, Liangyao Chen, Haiyu Zheng, Youngpak Lee
Summary: A flexible broadband metamaterial perfect absorber (FBMPA) was proposed in this work, using conductive-graphene ink pasted on a polyimide substrate. The FBMPA showed an absorption over 90% covering a wide frequency range, and maintained stable high absorption even under oblique incidence and when wrapped around cylindrical surfaces. The absorption mechanism was explained by perfect impedance matching and dielectric loss of the absorber, providing groundwork for future applications in meta-devices such as sensors, optical filters/switchers, photodetectors, and energy converters.
Article
Chemistry, Physical
Ngo Thi Lan, Nguyen Thi Mai, Duong Duc La, Nguyen Minh Tam, Son Tung Ngo, Ngo Tuan Cuong, Nguyen Van Dang, Thu Thi Phung, Nguyen Thanh Tung
Summary: By doping the Au-10(2+) cluster with 3d transition metal atoms, the study explores superatomic clusters as analogues of more complex molecules. It is found that Au9M2+ exhibits different structural evolution patterns and stable magnetic behavior.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Polymer Science
Linh Nguyen Pham Duy, Chuong Bui, Liem Thanh Nguyen, Tung Huy Nguyen, Nguyen Thanh Tung, Duong Duc La
Summary: This study investigates the dispersion of graphene nanoplatelets (GNPs) in natural rubber (NR) matrix using dioctyl phthalate (DOP) modification. The modified GNPs effectively improve the abrasion resistance, shear strength, and tensile strength of the rubber composite. The presence of graphene slightly reduces some mechanical properties but remains significant as an effective additive for high abrasion resistance.
Article
Chemistry, Multidisciplinary
Ngo Thi Lan, Nguyen Thi Mai, Ngo Tuan Cuong, Phung Thi Hong Van, Duong Duc La, Nguyen Minh Tam, Son Tung Ngo, Nguyen Thanh Tung
Summary: In this study, the interaction of H2 with small-sized AgnCr (n = 1-12) was investigated using density functional theory calculations. It was found that the cluster structures remained preserved during the adsorption process, and relatively stable adsorption configurations were identified.
Article
Chemistry, Physical
Ngo Thi Lan, Nguyen Thi Mai, Duong Duc La, Son Tung Ngo, Nguyen Minh Tam, Nguyen Van Dang, Nguyen Thanh Tung
Summary: In this study, the interaction between hydrogen molecules and Au9M2+ clusters was investigated using density-functional theory (DFT). The preferred adsorption configuration of hydrogen on these clusters was found to be influenced by factors such as surface/encapsulated position, relative electronegativity, and coordination number of atoms. The research provides insights into the mechanisms underlying hydrogen adsorption and can aid further theoretical and experimental studies of hydrogenation in nanostructured materials.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Thi Quynh Xuan Le, Linh Nhat Nguyen, Thanh Tung Nguyen, Eun Ha Choi, Quang Liem Nguyen, Nagendra Kumar Kaushik, Nguyen Thuan Dao
Summary: This study investigated the effects of plasma treatment on the germination and growth of mung bean seeds and determined the optimal treatment parameters. The results showed that plasma treatment significantly enhanced germination and growth, and the mechanism behind the treatment effects was revealed through observations and measurements of the seed coating.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Son Tung Ngo, Trung Hai Nguyen, Duc-Hung Pham, Nguyen Thanh Tung, Pham Cam Nam
Summary: Understanding the thermodynamics and kinetics of the binding process between antibodies and the SARS-CoV-2 receptor-binding domain (RBD) is crucial for COVID-19 vaccine development. The study revealed that the South African variant (B1.351 or 501Y.V2) can resist neutralizing antibodies due to three substitutions in the RBD. These mutations alter various properties of the RBD + NAb complex, resulting in decreased binding affinity between the antibody and 501Y.V2 RBD.
Article
Optics
Hang Dong, Zhixin Sun, Jingyi Li, Yahui Li, Wei Zhang, Guangyong Jin
Summary: This paper calculates thermal stresses and adsorption forces to determine laser cleaning conditions and establishes relevant models. Experimental results show that the removal effect is better with increasing nanosecond pulse delay, with the best effect achieved at 600 milliseconds pulse delay. Based on the findings, the mechanisms of oxide film removal involve thermal stress against adsorption and plasma shock wave breaking the oxide layer.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Junjie Zhang, Wenjun Li, Bingtao Li, Zheng-Da Hu, Jicheng Wang, Feng Zhang, Lei Wang
Summary: A multilayer thin film device structure based on Tamm plasmons is proposed for high-performance near-infrared hot electron photodetectors. By optimizing the device structure parameters, high responsivity detection can be achieved.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hong Huang, Zhiguang Han
Summary: This paper proposes a new ghost imaging reconstruction method using ordered orthogonal Hadamard derived speckle as the illumination speckle series, and introduces the alternating direction multiplier method to improve the imaging performance. The evaluation results show that the method can achieve high-quality reconstructed images under low sampling conditions.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Moritsugu Sakamoto, Yuki Ono, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Masayuki Tanaka, Hiroshi Ono
Summary: The effect of wavelength and polarization of illuminating light in polarization imaging for birefringent objects placed behind a scattering structure was experimentally investigated. The result shows that the spatial distribution of the birefringent object was more clearly visualized in the longer wavelength combined with circularly polarized light illumination. This finding indicates the potential of using polarization imaging with circularly polarized light illumination in the near-infrared range for visualizing birefringent objects with scattering.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Peihui Du, Hongfang Wang, Pengwei Li, Rukeyemuhan Abadula, Hmbat Batelbek, Min Gao
Summary: In this study, we theoretically demonstrate the strong coupling between Tamm plasmons and exciton polaritons in metal Al/DBR-molecular structures, extending the operating wavelength to the deep ultraviolet region. The coupling strength can be effectively manipulated by adjusting the structure parameters, offering potential benefits for the development of new-style optical filters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Priyanka Chaudhary, Akhilesh Kumar Mishra
Summary: We design and numerically investigate the switching dynamics between two outer waveguides in a parity-time (PT)-symmetric adiabatically coupled three waveguides nonlinear directional coupler (NLDC) system. The study shows that the device can provide switching even when the middle waveguide is nonlinear and the outer waveguides are linear. Furthermore, the effect of loss to gain ratio on critical switching power and the impact of launched light power and gain (loss) value on transmitted power are also studied.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Wei Feng, Yongcong Yi, Shuyang Li, Zhi Xiong, Boya Xie, Zhen Zeng
Summary: Traditional imaging techniques are ineffective in achieving clear underwater imaging due to the presence of scattering media. Single-pixel imaging (SPI) system based on Unet++ offers a solution for reconstructing high-quality images in highly turbid water environments.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiaorui Qu, Jufeng Zhao, Haijun Tian, Junjie Zhu, Guangmang Cui
Summary: This paper studies the structural similarity between RGB and spectral images and proposes a non-iterative Images Structure Similarity (ISS) method for fast reconstruction of spectral images. Additionally, the input of the Deep Image Prior (DIP) method is optimized for the first time by using the initial spectral data reconstructed by ISS, leading to an improved starting value for the iteration. The experimental results show that the proposed method can enhance the reconstruction quality in both spectral and spatial resolutions, while significantly reducing the reconstruction time compared to other DIP-based methods.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Donghe Sheng, Zhe Han, Zanyang Qiao, Tianpei Dong, Chenxi Wang, Huiping Tian
Summary: In this study, a distributed multi-parameter sensor based on an etched few-mode multi-core fiber is proposed, allowing simultaneous sensing of temperature, strain, and sample refractive index. By combining space division multiplexing and stimulated Brillouin scattering, the sensor achieves high sensitivity in detecting these parameters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Dehao Chen, Zhenwu Mo, Zehong Liang, Junjie Jiang, Huilin Tang, Yidan Sun, Ziyu Wang, Quanfeng Wei, Yanru Chen, Dongmei Deng
Summary: In this study, a novel family of elliptical Airyprime vortex beams (EAPVBs) is introduced, which inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). The asymmetric focusing of EAPVB leads to some novel properties, such as the splitting of high-order optical vortex and the formation of two foci. By taking advantage of these properties, EAPVB is constructed as a tunable optical bottle for particle capture.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiao Ma, Qiongchan Shao, Jian-Jun He
Summary: In this study, an SHS chip based on Su8 waveguide was designed and fabricated. By physically adjusting the metal electrodes and compensating for transmissivity fluctuations, the generation of side ripples was successfully suppressed.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hongbin Zhang, Jiansen Du, Zongtao Chi, Hailin Cong, Bin Wang
Summary: In this paper, a novel type of dual-wavelength confocal metalens is proposed to solve the spatial crosstalk between two wavelengths. The metalens can greatly reduce the spatial crosstalk and achieve high precision and efficiency in confocal imaging. It can also focus light in specific wavelength ranges, making it suitable for imaging, microscopy, and optical fiber communication.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Rui Qiu, Guanmao Zhang, Shaokai Du, Jie Liu, Hongyu Jib, Kaiyun Bi, Bochuan Xing, Guangchao Diao
Summary: Recent research has developed an achromatic metalens that shows potential for replacing traditional lenses. This study focuses on a continuously variable focus height broadband achromatic metalens for long-wavelength infrared applications. By optimizing materials and parameters, chromatic aberration is effectively corrected, making it suitable for high-resolution LWIR imaging and spectroscopy systems.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Marcos Troncoso-Costas, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O'Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry
Summary: In this work, a fast-switching tuneable laser capable of wide wavelength coverage, low noise and linewidth levels suitable for high-order modulation formats is demonstrated. The laser is characterized to cover a wavelength range of 35 nm in the C-band with nanosecond switching time. It is used to successfully demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Takeshi Moriyasu, Masahiko Tani, Hideaki Kitahara, Takashi Furuya, Jessica Afalla, Toshiro Kohmoto, Daishiro Koide, Hiroki Sato, Mitsutaka Kumakura
Summary: Optical pump-terahertz probe spectroscopy was used to study the photocarrier dynamics and optical characteristics of semiconductor Si. The results showed that the thickness of Si influenced the transmitted terahertz field amplitude and peak delay time, indicating differences in photocarrier dynamics between different Si materials.
OPTICS COMMUNICATIONS
(2024)
