Results 31 to 40 of about 3,011 (223)
Advances on Polymer Optical Fiber Gratings Using a KrF Pulsed Laser System Operating at 248 nm
Fibers, 2018 This paper presents the achievements and progress made on the polymer optical fiber (POF) gratings inscription in different types of Fiber Bragg Gratings (FBGs) and long period gratings (LPGs). Since the first demonstration of POFBGs in 1999, significant
Carlos A. F. Marques +7 more
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Sensing Features of Long Period Gratings in Hollow Core Fibers [PDF]
Sensors, 2015 We report on the investigation of the sensing features of the Long-Period fiber Gratings (LPGs) fabricated in hollow core photonic crystal fibers (HC-PCFs) by the pressure assisted Electric Arc Discharge (EAD) technique. In particular, the characterization of the LPG in terms of shift in resonant wavelengths and changes in attenuation band depth to the
IADICICCO, Agostino +1 more
openaire +4 more sources
Long Period Fiber Gratings Inscribed With an Improved Two-Dimensional Scanning Technique
IEEE Photonics Journal, 2014 We demonstrated a promising CO2 laser irradiation system based on an improved 2-D scanning technique. Such a system could be used to inscribe high-quality long period fiber gratings (LPFGs) with good reproducibility of grating inscription, which ...
Xiaoyong Zhong +7 more
doaj +1 more source
Advances in Sustainable and Wearable Textile Based Soft Robotics
Advanced Functional Materials, EarlyView.This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas +6 more
wiley +1 more source
Strong long-period fiber gratings recorded at 352?nm [PDF]
Optics Letters, 2005 We describe long-period grating inscription in hydrogenated telecom fibers by use of high-intensity femtosecond 352 nm laser pulses. We show that this technique allows us to fabricate high-quality 30 dB gratings of 300 microm period and 2 cm length by use of a three-photon absorption mechanism.
Dubov, Mykhaylo +3 more
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Magnesium‐Based Transient Bioelectronics, Bio‐Optics and Bio‐Scaffolds
Advanced Functional Materials, EarlyView.This paper reviews the state of the art and recent advances in magnesium‐based thin‐film, foils, and scaffolds for applications in transient bio‐optics, bioelectronics and tissue engineering. The design principles, fabrication methods, material properties, and integration strategies are discussed in detail.
Massimo Mariello, Yves Leterrier
wiley +1 more source
Long period fiber gratings in anti-resonant hollow core fiber
Applied Physics ExpressLong period gratings, based on anti-resonant hollow core fibers (AR-HCFs), are fabricated using a high-frequency CO _2 laser pulse by carving periodic grooves. This device exhibits both axial strain and bending sensing characteristics.
Ligang Huang +8 more
doaj +1 more source
Fibers, 2017 The manufacturing and spectral features of different types of long period fiber gratings (LPFGs), ranging from phase-shifted, turn-around point, and internally tilted gratings, to pseudo-random gratings, are described and discussed in detail.
Francesco Chiavaioli +2 more
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Optical Fiber Sensors: Working Principle, Applications, and Limitations
Advanced Photonics Research, 2022 Fiber‐optic technology emerged originally for applications in data transmission and telecommunications. However, sensors based on fiber‐optics have been developed rapidly because of their excellent sensing performances and capability to function in ...
Mohamed Elsherif +10 more
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Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells
Advanced Functional Materials, EarlyView.Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam +17 more
wiley +1 more source