Results 41 to 50 of about 43,418 (51)

Investigating changes in the electric field profiles of transverse modes in fibres due to bending

IET Optoelectronics
A model is presented for calculating the electric field profiles of transverse modes in fibres. Using this model, the electric field propagation of transverse modes was calculated and compared in both bent and straight Yb and Ho fibres.
Sajjad Vazeerpour, Mahdi Shayganmanesh, Davoud Dorranian   +2 more
doaj   +1 more source

High-Efficiency Dynamic Three-Dimensional Topography Measurement Using the Phase Shift Generation Method

Photonics
In the fringe projection profilometry (FPP), the traditional phase-shifting (TPS) algorithm and the Fourier transform (FT) algorithm are beset with a conundrum where measurement efficiency and conflicts with measurement accuracy, thereby limiting their ...
Qinyuan Deng, Yangyi Liu, Fashi Zhu, Jie Hou, Fei Xiong, Yan Zhang   +5 more
doaj   +1 more source

Review of High-Power Continuous Wave Yb-Doped Fiber Lasers near 980 nm

Photonics
In this paper, the development of a high-power continuous wave (CW) fiber laser near 980 nm is reviewed. This review is focused primary on the power evolution resulting from the designation of Yb-doped fibers, which is important in the suppression of the
Shangde Zhou, Jianqiu Cao, Maoni Chen, Zefeng Wang, Lei Si, Jinbao Chen   +5 more
doaj   +1 more source

Synthesis of Aluminium Nitride-Based Coatings on Mild Steel Substrates Utilising an Integrated Laser/Sol–Gel Method

Photonics
The field of protective coatings for industrial applications is continuously evolving, driven by a need for materials that offer exceptional hardness, enhanced wear resistance, and low friction coefficients.
Ogulcan Eren, Alhaji M. Kamara, Huseyin Kursad Sezer, Sundar Marimuthu   +3 more
doaj   +1 more source

Similariton-like Pulse Evolution in an Er-Doped Fiber Laser with Hybrid Mode Locking

Photonics
An Er-doped all-fiber ultrashort pulse laser with positive total net-cavity group-velocity dispersion is demonstrated based on a hybrid mode-locking mechanism ensured by single-walled carbon–boron–nitrogen nanotubes with coaction of the nonlinear ...
Aleksander Y. Fedorenko, Almikdad Ismaeel, Ilya O. Orekhov, Dmitriy A. Dvoretskiy, Stanislav G. Sazonkin, Lev K. Denisov, Valeriy E. Karasik   +6 more
doaj   +1 more source

Switchable Dual-Wavelength Thulium-Doped Fiber Laser Based on Polarization-Maintaining Fiber Bragg Grating and Compound Cavity Filter

Photonics
This paper presents experimental evidence regarding a novel switchable dual-wavelength thulium-doped fiber laser (TDFL). Wavelength switching is achieved by combining a polarization-maintaining fiber Bragg grating (PM-FBG) with a polarization controller (
Xiangdong Wang, Fengping Yan, Hao Guo, Wei Wang, Dandan Yang, Pengfei Wang, Ting Li, Chenhao Yu, Kazuo Kumamoto, Yuping Suo   +9 more
doaj   +1 more source

Agreement on Anterior Chamber Depth Measurement between Three Commercially Available Devices

Photonics
The present study aimed to assess the agreement of three commercially available devices on the measurement of anterior chamber depth (ACD) with and without compensation by central corneal thickness measurement (CCT).
Veronica Noya-Padin, Hugo Pena-Verdeal, Jacobo Garcia-Queiruga, Irene Sampedro-Mariño, Maria Jesus Giraldez, Eva Yebra-Pimentel   +5 more
doaj   +1 more source

Novel Plasmonic Metamaterials Based on Metal Nano-Hemispheres and Metal-Dielectric Composites

Photonics
We introduce a groundbreaking plasmonic metamaterial, the Nano-Hemisphere on Hyperbolic Metamaterial (NHoHMM), which involves the fabrication of Ag nano-hemispheres on a multilayered Ag/SiO2 structure, achieved solely through sputtering and heat ...
Rei Niguma, Tetsuya Matsuyama, Kenji Wada, Koichi Okamoto   +3 more
doaj   +1 more source

High-Efficiency 4 × 4 × 10 Gbps Orbital Angular Momentum Modes Incorporated into Satellite–Ground–Underwater Optical Wireless System under Diverse Turbulences

Photonics
With their unique capability to deal with a considerable geographic area, satellite–ground–underwater optical wireless communication (OWC) systems are an appealing alternative to meet the ever-increasing demand for end-to-end broadband services.
Meet Kumari, Satyendra K. Mishra
doaj   +1 more source

HoloDiffusion: Sparse Digital Holographic Reconstruction via Diffusion Modeling

Photonics
In digital holography, reconstructed image quality can be primarily limited due to the inability of a single small aperture sensor to cover the entire field of a hologram.
Liu Zhang, Songyang Gao, Minghao Tong, Yicheng Huang, Zibang Zhang, Wenbo Wan, Qiegen Liu   +6 more
doaj   +1 more source