Results 121 to 130 of about 40,614 (314)

In Situ Disentangling Local Thermal and Photoelectron Contribution in Photoelectrochemical Reactions Based on Optical Microfiber Sensors

Advanced Science, EarlyView.
An in situ optical microfiber sensor capable of real‐time decoupling of photothermal and photoelectronic effects in photoelectrochemical reactions is presented. The approach utilizes highly sensitive modal interference to dynamically capture localized thermo‐optic signals from photothermal materials, thereby enabling quantitative discrimination of ...
Guangzheng Luo, Benfang Xu, Tiansheng Huang, Li‐Peng Sun, Bai‐Ou Guan   +4 more
wiley   +1 more source

Propagation Characteristics of Optical Long Period Fiber Gratings using Graphical Solution Methods

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, we explicitly show a complete analysis and detailed calculation of propagation characteristics of the effective refractive indices of the core and cladding for a long period grating employing both the Two-Layer and Three-Layer Geometries ...
Felipe S. Delgado, Marco A. Jucá, Thiago V. N. Coelho, Alexandre B dos Santos, Andres P. L. Barbero, Vinicius N. H. Silva   +5 more
doaj   +1 more source

Slowdown and splitting of gap solitons in apodized Bragg gratings [PDF]

, 2004
We study the motion of gap solitons in two models of apodized nonlinear fiber Bragg gratings (BGs), with the local reflectivity (LR) varying along the fiber.
Chu, Pak L., Mak, William C. K., Malomed, Boris A.   +2 more
core   +2 more sources

Multimodal Wearable Biosensing Meets Multidomain AI: A Pathway to Decentralized Healthcare

Advanced Science, EarlyView.
Multimodal biosensing meets multidomain AI. Wearable biosensors capture complementary biochemical and physiological signals, while cross‐device, population‐aware learning aligns noisy, heterogeneous streams. This Review distills key sensing modalities, fusion and calibration strategies, and privacy‐preserving deployment pathways that transform ...
Chenshu Liu, Haolin Fan, Minwoo Kim, Tong Zhou, Pinyi Yang, Lingdi Zhao, Yiran Wang, Ziyuan Che, Chia‐Wei Liu, Bingbing Li, Yangzhi Zhu   +10 more
wiley   +1 more source

Thin-Core-Fiber-Based Long-Period Fiber Grating for High-Sensitivity Refractive Index Measurement

IEEE Photonics Journal, 2015
We experimentally demonstrated the fabrication of asymmetric long-period fiber gratings (LPFGs) in thin core fiber by use of focused CO2 laser beam.
Cailing Fu, Xiaoyong Zhong, Changrui Liao, Yiping Wang, Ying Wang, Jian Tang, Shen Liu, Qiao Wang   +7 more
doaj   +1 more source

Long period fiber gratings for the mitigation of parasitic laser effects in mid-infrared fiber amplifiers.

Optics Express, 2019
A concept to mitigate parasitic lasing in mid-IR fiber amplifiers using a single long period fiber grating is shown. Using tightly confined ultrashort laser pulses at 800 nm, a grating was directly inscribed into the core of an erbium doped fluoride ...
Maximilian Heck, Jean-Christophe Gauthier, A. Tünnermann, R. Vallée, S. Nolte, M. Bernier   +5 more
semanticscholar   +1 more source

Tuning Li+ and Na+ Functionality in Renewable Carbon Electroactive Material Through Site‐Specific Nanostructural Disorder

Advanced Science, EarlyView.
This study presents a selective thermal transformation of polycarbonate into hybrid carbon materials. The structured carbon enhances electrochemical performance, particularly in lithium‐ion systems. Investigations reveal improved bimetallic ion diffusivity through the hybrid microstructure, contributing to excellent charge kinetics.
Montajar Sarkar, Rumana Hossain, Jian Peng, Dilan Kumara Thilakarathna, Yu Wang, Yin Yao, Neeraj Sharma, Veena Sahajwalla   +7 more
wiley   +1 more source

Sensitivity Analysis of Sidelobes of the Lowest Order Cladding Mode of Long Period Fiber Gratings at Turn Around Point. [PDF]

Sensors (Basel), 2022
Dey TK, Tombelli S, Roy A, Biswas P, Giannetti A, Basumallick N, Baldini F, Bandyopadhyay S, Trono C.   +8 more
europepmc   +1 more source

Residual-stress-induced helical long period fiber gratings for sensing applications.

Optics Express, 2018
We demonstrate a high-efficiency grating fabrication system, which can be used to inscribe a high-quality helical long period fiber grating (HLPFG) on single-mode fiber by means of hydrogen-oxygen flame.
Ziliang Li, Shen Liu, Zhiyong Bai, Cailing Fu, Yan Zhang, Zhongyuan Sun, Xueya Liu, Yiping Wang   +7 more
semanticscholar   +1 more source

High‐Order Nonlinear Photonic Crystal with Ordered Structures for Giant Enhancement of Frequency Tripling

Advanced Science, EarlyView.
A meta‐YAG crystal with artificially order/disorder structures was fabricated to realize the efficient third‐harmonic generation at 343 nm with a conversion efficiency of 4.5×10−3, surpassing six orders of magnitude compared to bulk YAG crystal. Moreover, a wide spectral tunability from 331 to 356 nm was also achieved in the meta‐YAG, indicating its ...
Xiaotian Guo, Qiaoling Han, Fei Liang, Bin Zhang, Dazhi Lu, Haohai Yu, Huaijin Zhang   +6 more
wiley   +1 more source