Results 51 to 60 of about 4,752 (200)

High-dimensional decoy-state quantum key distribution over 0.3 km of multicore telecommunication optical fibers [PDF]

open access: yes, 2016
Multiplexing is a strategy to augment the transmission capacity of a communication system. It consists of combining multiple signals over the same data channel and it has been very successful in classical communications.
Cardenas, J.   +13 more
core   +4 more sources

Routing Optimization of Cable‐Driven Octopus‐Inspired Manipulators With Minimal Actuation via Genetic Algorithm and Finite Element Method

open access: yesAdvanced Intelligent Systems, EarlyView.
Soft robotic arms are promising for gentle grasping but often rely on bulky actuation systems. This work presents a computational design framework that optimizes tendon number and routing to achieve target grasps with fewer actuators. Validated on an octopus‐inspired underwater arm, the approach enables efficient, underactuated soft manipulators for ...
Michele Martini   +6 more
wiley   +1 more source

Multicore Optical Fiber Sensors

open access: yesCLEO Pacific Rim Conference, 2018
We review recent multicore optical fiber-based interferometric sensors for vibration, strain and temperature monitoring. Simple, highly sensitive sensors operating in reflection and transmission mode have been fabricated using short segments of strongly coupled core MCFs.
R. Amezcua-Correa   +5 more
openaire   +2 more sources

Crosstalk Analysis of Heterogeneous Multicore Fibers Using Coupled-Mode Theory

open access: yesIEEE Photonics Journal, 2017
Intercore crosstalk of heterogeneous multicore fiber is investigated based on coupled-mode theory. Random twisting model is used for estimating the crosstalk. The crosstalk of two kinds of fibers: triangular lattice 30-core fiber with four kinds of cores
Takeshi Fujisawa   +6 more
doaj   +1 more source

Design and Dispersion Control of Microstructured Multicore Tellurite Glass Fibers with In-Phase and Out-of-Phase Supermodes

open access: yesPhotonics, 2021
High nonlinearity and transparency in the 1–5 μm spectral range make tellurite glass fibers highly interesting for the development of nonlinear optical devices.
Elena A. Anashkina, Alexey V. Andrianov
doaj   +1 more source

Programmable crack dynamics engineering enables flexible strain sensors with high linearity

open access: yesFlexMat, EarlyView.
First‐decoupling theoretical framework of crack evolution elucidating the control methods, mechanistic insights, and structure‐activity relationships is established. Crack propagation from uncontrollable randomness systematically evolves into spatially ordered states.
Chunjin Wu   +9 more
wiley   +1 more source

Highly birefringent multicore optical fibers [PDF]

open access: yesCLEO: 2014, 2014
We report on the fabrication and characterization of two polarization maintaining multicore fibres, one with three and the other with ninety eight cores. The beat length and polarization orientation are characterized.
Stone, James M.   +2 more
openaire   +2 more sources

End-View Image Processing Based Angle Alignment Techniques for Specialty Optical Fibers

open access: yesIEEE Photonics Journal, 2017
We propose two end-view-based digital image processing algorithms for high-precision rotational angle alignment of specialty optical fibers. The first technique is based on the cross-correlation calculation between images of two fiber ends.
Li Shen   +7 more
doaj   +1 more source

Extended field-of-view in a lensless endoscope using an aperiodic multicore fiber

open access: yes, 2016
We investigate lensless endoscopy using coherent beam combining and aperiodic multicore fibers (MCF). We show that diffracted orders, inherent to MCF with periodically arranged cores, dramatically reduce the field of view (FoV) and that randomness in MCF
Andresen, Esben Ravn   +6 more
core   +3 more sources

Flexible lensless endoscope with a conformationally invariant multi-core fiber [PDF]

open access: yes, 2019
The lensless endoscope represents the ultimate limit in miniaturization of imaging tools: an image can be transmitted through a (multi-mode or multi-core) fiber by numerical or physical inversion of the fiber's pre-measured transmission matrix.
Andresen, Esben Ravn   +7 more
core   +4 more sources

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