Results 31 to 40 of about 46,635 (50)

Research on Large Divergence Angle Laser Ranging System

open access: yesPhotonics
This study investigates a laser ranging technology scheme featuring a large divergence angle for both the emitted and received laser beams, focusing on applications where both the measured target and the ranging carrier are high-mobility platforms.
Junwen Ji, Suhui Yang, Yimin Feng
doaj   +1 more source

Effects of Detector Configuration on X-Ray Luminescence Computed Tomography Imaging

open access: yesPhotonics
Background: X-ray luminescence computed tomography (XLCT) has emerged as a promising hybrid biomedical imaging modality for over a decade. However, the detector’s configuration has not been studied.
Yibing Zhang   +2 more
doaj   +1 more source

Noise Suppression in Quadrature Phase-Shift-Keying-Oriented All-Optical Matching Systems Using Highly Nonlinear Fiber

open access: yesPhotonics
All-optical matching systems that detect and localize designated target sequences in input all-optical data sequences have attracted significant attention in all-optical processing.
Xin Li   +4 more
doaj   +1 more source

Identification of Exposed Submarine Cable Status based on Optimized VMD-GAF-MCNN for Multi Sensor Fusion

open access: yesGuangtongxin yanjiu
【Objective】The multi-beam (side scan) sonar method is commonly employed to scan and measure the erosion of pile foundations and the landing sections of submarine cables.
WANG Wei   +5 more
doaj  

A Direct Measurement of the C2H2 Concentration from the C2H2–Oil Mixed Solution Using the Photoacoustic Spectroscopy Method

open access: yesPhotonics
The photoacoustic (PA) method is commonly used in the measurement of trace gas concentration owing to its high accuracy and reliability. However, the conventional PA method is usually used in the gas-phase environment, which leads to a long measurement ...
Zikang Rong   +7 more
doaj   +1 more source

Research on Co-propagation System Integrating Quantum Key Distribution and Classical Communication

open access: yesGuangtongxin yanjiu
【Objective】Developing devices that integrate quantum technology with communication enables the coexistence of quantum signals and classical signals in single-mode fiber networks.
CHEN Lexian, ZHOU Hui, FU Yudi
doaj  

Study on the Dynamic Characteristics of DM-DFBL Self-Delayed Feedback with an Optoelectronic Oscillation Loop

open access: yesPhotonics
Nonlinear dynamical states generated by self-delayed feedback based on fiber structures have broad applications. However, fiber-based optoelectronic feedback or pure optical feedback systems exhibit long delays, and the coupling mechanisms between these ...
Nian Xie   +8 more
doaj   +1 more source

Longitudinal Polarization Vortices Generated via Terahertz Ring Resonator

open access: yesPhotonics
Vortex beams characterized by helical phase wavefronts enable innovative explorations of optical and physical interactions. This work experimentally realizes longitudinally polarized vortices with arbitrary topological charges in terahertz (THz ...
Mingyu Ji, Tengjiao Wang, Jingya Xie
doaj   +1 more source

Dual-Wavelength Operation at 607 nm and 640 nm with the Same Threshold and Slope Efficiency in Pr3+:LiLuF4 Crystal

open access: yesPhotonics
A dual-wavelength (DW) Pr3+:LiLuF4 (Pr:LLF) laser with the same threshold and slope efficiency was achieved for the first time. We theoretically deduced the conditions for obtaining the same threshold and slope efficiency of the DW operation, and ...
Haotian Huang   +4 more
doaj   +1 more source

A Deep Learning Model for Spectral Reconstruction of Arrayed Micro-Resonators

open access: yesPhotonics
Miniaturized spectrometers employing photonic crystal cavity arrays in conjunction with computational reconstruction have gained attention as effective tools for spectral analysis.
Xinyi Zhou   +4 more
doaj   +1 more source

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