Results 71 to 80 of about 38,360 (284)

Using Mechanically-Induced Long-Period Fiber Gratings for OAM Modes Generation Based on Anti-Resonant Mechanisms in Ring-Core Fibers

IEEE Photonics Journal, 2022
A flexible first-order OAM modes generation in ring-core fibers (RCFs) based on a mechanically-induced long-period fiber grating (MLPFG) is proposed. By directly fusion splicing a standard single-mode fiber (SMF) and RCFs, the anti-resonant reflection ...
Jianheng Qiu, Fufei Pang, Liang Zhang, Heming Wei, Yana Shang, Wei Chen, Sujuan Huang, Tingyun Wang   +7 more
doaj   +1 more source

Resonant THz sensor for paper quality monitoring using THz fiber Bragg gratings

, 2013
We report fabrication of THz fiber Bragg gratings (TFBG) using CO2 laser inscription on subwavelength step-index polymer fibers. A fiber Bragg grating with 48 periods features a ~4 GHz-wide stop band and ~15 dB transmission loss in the middle of a stop ...
Bock, Wojtek J., Chinifooroshan, Yasser, Markov, Andrey, Skorobogatiy, Maksim, Tripathi, Saurabh M., Yan, Guofeng   +5 more
core   +1 more source

Rapid characterization of the ultraviolet induced fiber Bragg grating complex coupling coefficient as a function of irradiance and exposure time [PDF]

, 2007
We report the application of optical frequency domain reflectometry and a discrete-layer-peeling inverse scattering algorithm to the spatial characterization of the UV induced complex coupling coefficient during fiber Bragg grating growth.
Cranch, Geoffrey A., Flockhart, Gordon M. H., Kirkendall, Clay K.   +2 more
core   +1 more source

Advances in Safe, Flexible, and Stretchable Batteries for Wearable Applications

Advanced Materials Technologies, EarlyView.
Unlike previous reviews centered on component‐based deformability, this work highlights safety‐driven design strategies for flexible and stretchable batteries. By integrating material‐level engineering, geometry‐controlled structures, biocompatibility, and self‐protection mechanisms, it establishes a unified framework that connects mechanical ...
Hyewon Kang, Garan Byun, Seunghyeb Ban, Yunuo Huang, Woon‐Hong Yeo   +4 more
wiley   +1 more source

Long period grating resonances in photonic bandgap fiber

Optics Express, 2006
We demonstrate the formation of stress-induced long period gratings (LPGs) in fluid-filled photonic bandgap fiber (PBGF). Based on our experimental results, simulations, and theoretical understanding of LPGs, we identify coupling to a guided LP(11)-like mode of the core and lossy LP1x-like modes of cladding microstructure for a single grating period ...
P, Steinvurzel, E D, Moore, E C, Mägi, B T, Kuhlmey, B J, Eggleton   +4 more
openaire   +2 more sources

Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song, Mohan Wang, Frank P. Payne, Patrick S. Salter, Tongyu Liu, Steve J. Elston, Martin J. Booth, Stephen M. Morris, Julian A. J. Fells   +8 more
wiley   +1 more source

High-resolution and broadband all-fiber spectrometers

, 2014
The development of optical fibers has revolutionized telecommunications by enabling long-distance broad-band transmission with minimal loss. In turn, the ubiquity of high-quality low-cost fibers enabled a number of additional applications, including ...
Alam, Mansoor, Cao, Hui, Redding, Brandon, Seifert, Martin   +3 more
core   +1 more source

Responsive Visible‐Wavelength Metasurfaces from Porous Silicon Based on Fano Guided‐Mode Resonance

Advanced Optical Materials, EarlyView.
The article introduces mesoporous silicon metasurfaces (pSi‐MS) supporting Fano guided‐mode resonances in the visible regime. By combining top‐down lithographic patterning of 2D gratings with bottom‐up electrochemical porosification, the approach realizes a new class of responsive metasurfaces, enabling highly sensitive and portable platforms for small
Tomoshree Dash, Saddam Gafsi, Estevao Marques Dos Santos, Ivan Kravchenko, Judson D. Ryckman   +4 more
wiley   +1 more source

Long Period Fiber Grating Inscribed in Hollow-Core Photonic Bandgap Fiber for Gas Pressure Sensing

IEEE Photonics Journal, 2017
In this paper, we have proposed and experimentally prepared an improved gas pressure sensing device. It is mainly constructed by a short hollow silica tube segment and a CO2-laser-induced long period grating in hollow-core photonic bandgap fiber (HC-PBF).
Jian Tang, Zhe Zhang, Guolu Yin, Shen Liu, Zhiyong Bai, Zhengyong Li, Mi Deng, Ying Wang, Changrui Liao, Jun He, Wei Jin, Gang-Ding Peng, Yiping Wang   +12 more
doaj   +1 more source

All-fiber bandwidth tunable ultra-broadband mode converters based on long-period fiber gratings and helical long-period gratings

Optics Express, 2020
We demonstrated the fabrication of bandwidth tunable ultra-broadband mode converters based on CO2-laser inscribed long-period fiber gratings (LPFGs) and helical long-period gratings (HLPGs) in a two-mode fiber (TMF). The simulation and experimental results show that there is a dual-resonance coupling from LP01 to LP11 core mode at the dispersion ...
Xinyi Zhao, Yunqi Liu, Zuyao Liu, Chengbo Mou   +3 more
openaire   +2 more sources