Results 51 to 60 of about 10,365 (247)

Fiber Optic-Based Refractive Index Sensing at INESC Porto

Sensors, 2012
A review of refractive index measurement based on different types of optical fiber sensor configurations and techniques is presented. It addresses the main developments in the area, with particular focus on results obtained at INESC Porto, Portugal.
Orlando Frazão, José L. Santos, Gaspar Rego, José M. Baptista, Diana Viegas, Paulo Caldas, Luis Coelho, Paula Tafulo, Susana O. Silva, Carlos Gouveia, Pedro A. S. Jorge   +10 more
doaj   +1 more source

Investigation of a SPR based refractive index sensor using a single mode fiber with a large D shaped microfluidic channel [PDF]

, 2019
In this work, a highly sensitive surface plasmon resonance (SPR) sensor based on a single mode fiber (SMF) incorporating a large microfluidic channel (MFC) for refractive index (RI) sensing is designed and optimized using a full-vectorial finite element ...
Al-Qazwini, An, Caucheteur, Cordaro, Dong, Dwivedi, Elshorbagy, Ghosh, Gowri, Hasan, Hasan, He, Klantsataya, Kretschmann, Kumari, Kvavle, Li, Liu, Luan, Nayak, Nguyen, Osório, Pathak, Patnaik, Prabowo, Qazi, Rahman, Rakić, Rifat, Santos, Sazio, Sharma, Tan, Tan, Weng, Xiao, Xie, Zhang   +37 more
core   +1 more source

Microstructured optical fibers: where�??s the edge?

Optics Express, 2002
We establish that Microstructured Optical Fibers (MOFs) have a fundamental mode cutoff, marking the transition between modal confinement and non-confinement, and give insight into the nature of this transition through two asymptotic models that provide a mapping to conventional fibers.
Kuhlmey, B. T., M. de Sterke, C., Mcphedran, Ross, Robinson, P., Renversez, G., Maystre, D.   +5 more
openaire   +3 more sources

Confinement losses in microstructured optical fibers [PDF]

Optics Letters, 2001
We describe a multipole formulation that can be used for high-accuracy calculations of the full complex propagation constant of a microstructured optical fiber with a finite number of holes. We show how the imaginary part of the microstructure, which describes confinement losses not associated with absorption, varies with hole size, the number of rings
T P, White, R C, McPhedran, C M, de Sterke, L C, Botten, M J, Steel   +4 more
openaire   +2 more sources

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

High bandwidth performance of multimode graded-index microstructured polymer optical fibers

Results in Physics, 2023
The investigation of the bandwidth in multimode graded-index microstructured polymer optical fiber (GI mPOF) with a solid core is proposed using a modal diffusion approach.
Svetislav Savović, Ana Simović, Branko Drljača, Milan S. Kovačević, Ljubica Kuzmanović, Miloš Ivanović, Alexandar Djordjevich, Konstantions Aidinis, Daniele Tosi, Rui Min   +9 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Research of parameters of fusion splices of telecommunication multimode optical fibers and silica microstructured fiber lightguides with hexagonal configuration

Научно-технический вестник информационных технологий, механики и оптики
This work presents the results of experimental approbation of the ability to fuse telecommunication graded index multimode optical fibers of ISO/IEC Category OM2+/OM3 and silica microstructured optical fibers by using a commercially available field ...
A. V. Bourdine, V. G. Nesterov, M. A. Orlov, A. S. Evtushenko, S. S. Pashin, E. S. Zaitseva, A. A. Belyaev, D. N. Shurupov, V. V. Demidov, E. V. Ter-Nersesyants, K. V. Dukelskii, G. S. Polishchuk   +11 more
doaj   +1 more source

Compact supercontinuum source for the visible using gain-switched Ti:Sapphire laser as pump [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
We demonstrate the use of a miniature gain-switched Ti:Sapphire laser for efficient generation of visible supercontinuum light in a highly nonlinear microstructured optical fiber.
Räikkönen E., Kaivola M., Buchter S. C.   +2 more
doaj   +1 more source

Fabrication Quality Assessment Based on the Coupling of a Dual-Core Microstructured Polymer Optical Fiber

Sensors, 2021
In this paper we report on the theoretical analysis and fabrication of a dual-core microstructured polymer optical fiber (mPOF) and demonstrate how the coupling characteristics of a dual-core mPOF may be a key factor to assess the quality of the ...
Amaia Berganza, Eneko Arrospide, Josu Amorebieta, Joseba Zubia, Gaizka Durana   +4 more
doaj   +1 more source