Results 61 to 70 of about 45,931 (274)
Triple-Wavelength Thulium-Doped Fiber Random Laser Based on Random Fiber Grating
Photonics, 2023 We demonstrate a triple-wavelength thulium-doped fiber random laser using a 10 cm long random fiber grating to provide random distributed feedback and a superimposed fiber Bragg grating as the wavelength-selective mirror.
Lewen Zhou +5 more
doaj +1 more source
Advanced Materials, EarlyView.Colonoscopic continuum robots lack sensing, endangering intestinal tissue. An ideal sensing array is hard to integrate. This work introduces a 3D crosslinked stretchable E‐armor with full‐coverage and multiplexing. It has bimodal sensing, forms a triboelectric synapse, uses CNN‐LSTM, and has a hydrogel and innovative triboelectric materials.
Yuyang Sun +8 more
wiley +1 more source
Applied Sciences, 2019 We propose and experimentally demonstrate a hybrid grating, in which an excessively tilted fiber grating (Ex-TFG) and a fiber Bragg grating (FBG) were co-inscribed in a reduced-diameter fiber (RDF).
Biqiang Jiang +5 more
doaj +1 more source
Creating very slow optical gap solitons with inter-fiber coupling [PDF]
, 2010 We show that gap-acoustic solitons, i.e., optical gap solitons with electrostrictive coupling to sound modes, can be produced with velocities down to less than 2.5% of the speed of light using a fiber Bragg grating that is linearly coupled to a non-Bragg fiber over a finite domain.
arxiv +1 more source
Passive Temperature-Compensating Technique for Microstructured Fiber Bragg Gratings [PDF]
IEEE Sensors Journal 8, 7 (2008) 1073-1078, 2010 The thermal drift of the characteristic wavelength of fiber Bragg gratings (FBGs) photowritten in the core of microstructured fibers (MOFs) is significantly reduced by inserting a liquid of suitable refractive index into their holes. For instance, the spectral range of variations is divided by a factor of 4 over a temperature range larger than 20 ...
arxiv +1 more source
Advanced Materials Technologies, EarlyView.A lithium battery separator displaying a structural color allows the visualization of mechanical phenomena in charging and discharging with color changes. The separator consists of silica nanoparticles and an acrylic polymer, enabling the simultaneous observation of the color changes, bubbles, and crystals.
Satoshi Nishita, Hiroaki Onoe
wiley +1 more source
Bragg gratings inscription in weakly-doped fibers
Results in Physics, 2019 The results of an investigation of the Bragg gratings inscription processes in weakly-doped fibers with different dopants without preliminary hydrogen-loading are presented in this work.
Oleg V. Butov
doaj
Resonant THz sensor for paper quality monitoring using THz fiber Bragg gratings [PDF]
, 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 band.
arxiv +1 more source
Apodizer Design to Efficiently Couple Light into a Fiber Bragg Grating [PDF]
arXiv, 2022 We provide an optimal control framework for efficiently coupling light in a bare fiber into Bragg gratings with a cubic nonlinearity. The light-grating interaction excites gap solitons, a type of localized nonlinear coherent state which propagates with a central frequency in the forbidden band gap, resulting in a dramatically slower group velocity. Due
arxiv
Progress in Surface Plasmon and Other Resonance Biosensors for Biomedical Applications
Advanced Materials Technologies, EarlyView.This is the shortened version: Recent advancements in surface plasmon resonance and other optical resonance biosensors for biomedical applications are presented. Advanced sensing strategies are examined for the detection of diverse analytes, integration of nanomaterials and machine learning, and emerging nonplasmonic modes like guided mode resonance ...
Faten Bashar Kamal Eddin +8 more
wiley +1 more source