Results 51 to 60 of about 778,605 (331)

High-order Radio Frequency Differentiation via Photonic Signal Processing with an Integrated Micro-resonator Kerr Optical Frequency Comb Source

, 2017
We demonstrate the use of integrated micro-resonator based optical frequency comb sources as the basis for transversal filtering functions for microwave and radio frequency photonic filtering and advanced functions.Comment: 8 pages, 7 figures, 46 ...
Chu, Sai T., Little, Brent E., Mitchell, Arnan, Morandotti, Roberto, Moss, David J., Shoeiby, Mehrdad, Wu, Jiayang, Xu, Xingyuan   +7 more
core   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

Advanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Jordi Llorca, Lluís Soler   +4 more
wiley   +1 more source

5.2-THz-bandwidth miniaturized spectrometer using a GHz-tunable laser

PhotoniX
The increasing demand for dispersion engineering in various photonic applications necessitates spectrometry with both kilohertz resolution and several terahertz bandwidth.
Huashan Yang, Xiaohu Tang, Hao Zhang, Lihan Wang, Zongxin Ju, Zhe Kang, Jijun He, Shilong Pan   +7 more
doaj   +1 more source

Field Trial of Cluster Target Detection by Broadband Microwave Photonic MIMO Radar

IEEE Journal of Microwaves
Cluster target detection is challenging for traditional narrow-band radars. Microwave photonic multiple-input-multiple-output (MIMO) radar is an emerging technique for accurate cluster target detection, which enhances range and angular resolution via its
Yuewen Zhou, Fangzheng Zhang, Jiayuan Kong, Yihan Wang, Jinhu Li, Kunyang Chen, Guanqun Sun, Yuhui He, Shilong Pan   +8 more
doaj   +1 more source

Broadband Image-Reject Mixing Based on a Polarization-Modulated Dual-Channel Photonic Microwave Phase Shifter

IEEE Photonics Journal, 2020
Broadband image-reject mixing using a dual-channel polarization-modulated photonic microwave phase shifter is proposed and experimentally demonstrated.
Yamei Zhang, Zhaoyu Li, Wenjuan Chen, Ce Liu, Kunlin Shao, Dan Zhu, Shilong Pan   +6 more
doaj   +1 more source

Low-error and broadband microwave frequency measurement in a silicon chip

, 2015
Instantaneous frequency measurement (IFM) of microwave signals is a fundamental functionality for applications ranging from electronic warfare to biomedical technology.
Aalto, Timo, Casas-Bedoya, Alvaro, Eggleton, Benjamin J., Harjanne, Mikko, Kapulainen, Markku, Marpaung, David, Morrison, Blair, Pagani, Mattia, Zhang, Yanbing   +8 more
core   +1 more source

Magnetic‐Field Dependent VB− Spin Decoherence in Hexagonal Boron Nitrides: A First‐Principles Study

Advanced Functional Materials, EarlyView.
This study investigates the decoherence of the VB− defect in h‐BN under external magnetic fields using first‐principles quantum many‐body simulations. A transition boundary distinguishing distinct decoherence regimes is identified, with its dependence on isotopic composition.
Jaewook Lee, Hyeonsu Kim, Huijin Park, Hosung Seo   +3 more
wiley   +1 more source

Photonic Generation of Wideband Chirped Microwave Waveforms

IEEE Journal of Microwaves, 2021
A chirped microwave waveform with a large time-bandwidth product (TBWP) can find important applications in modern radar systems and microwave imaging systems. Microwave photonics, a field that studies the generation and processing of microwave signals in
Hao Chi, Chao Wang, Jianping Yao
doaj   +1 more source

Characterization of Power-to-Phase Conversion in High-Speed P-I-N Photodiodes

, 2011
Fluctuations of the optical power incident on a photodiode can be converted into phase fluctuations of the resulting electronic signal due to nonlinear saturation in the semiconductor.
Datta, S., Diddams, S., Hati, A., Joshi, A., Nelson, C., Quinlan, F., Taylor, J.   +6 more
core   +1 more source

Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes

Advanced Functional Materials, EarlyView.
This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin, Wenhao Wang, Thomas Caiwei Tan, Abhishek Kumar, Ridong Jia, Nikhil Navaratna, Ranjan Singh, Lijuan Xie   +7 more
wiley   +1 more source