Results 1 to 10 of about 7,807 (163)

Displacement Sensing of an Active String Actuator Using a Step-Index Multimode Optical Fiber Sensor [PDF]

open access: yesSensors, 2022
A thin McKibben artificial muscle is a pneumatic actuator with an outer diameter of only 1.8 mm. We fabricated a string-shaped actuator called an “active string actuator,” which achieves a high contractile displacement by accumulating thin McKibben ...
Weihang Tian   +3 more
doaj   +2 more sources

Soliton propagation in multimode optical fibers [PDF]

open access: yesOptics Letters, 1981
Soliton propagation in a multimode optical fiber in the presence of an intensity-dependent refractive index is investigated by means of a set of nonlinear coupled equations derived in the frame of coupled-mode theory. In particular, the conditions on modal amplitudes and modal dispersion necessary for soliton existence are derived.
Bruno Crosignani, Paolo di Porto
exaly   +4 more sources

Fiber-Optic Vibration Sensor Based on Multimode Fiber

open access: yesRadioengineering, 2008
The purpose of this paper is to present a fiberoptic vibration sensor based on the monitoring of the mode distribution in a multimode optical fiber.
I. Lujo   +4 more
doaj   +3 more sources

Mode Coupling and Steady-State Distribution in Multimode Step-Index Organic Glass-Clad PMMA Fibers

open access: yesPhotonics, 2022
Mode coupling and power diffusion in multimode step-index (SI) organic glass-clad (OGC) PMMA fiber is examined in this study using the power flow equation (PFE).
Svetislav Savović   +3 more
doaj   +1 more source

Research Progress in Tunable Fiber Lasers Based on Multimode Interference Filters

open access: yesMicromachines, 2023
Tunable fiber lasers have the advantages of good beam quality, high integration, and adjustable output wavelength, and they are widely used in fields such as optical fiber communication and optical fiber sensing.
Liqiang Zhang   +5 more
doaj   +1 more source

Brillouin Interaction between Two Optical Modes Selectively Excited in Weakly Guiding Multimode Optical Fibers

open access: yesSensors, 2023
A multimode optical fiber supports excitation and propagation of a pure single optical mode, i.e., the field pattern that satisfies the boundary conditions and does not change along the fiber.
Andrei Fotiadi   +5 more
doaj   +1 more source

Multimode fiber ruler for detecting nanometric displacements

open access: yesAPL Photonics, 2022
Light is a perfect tool for numerous metrology applications. To deliver light to hard-to-reach places, fiber probes are widely used. Hair-thin endoscopes based on multimode fibers offer exceptional performance in terms of information density and ...
Ksenia Abrashitova, Lyubov V. Amitonova
doaj   +1 more source

Sensitivity Modal Analysis of Long Reflective Multimode Interferometer for Small Angle Detection and Temperature

open access: yesPhotonics, 2023
This work presents the sensitive modal analysis of a long reflective multimode optical fiber device for angle and temperature. The reflective multimode interference optical fiber device was fabricated by splicing ~40 cm of multimode optical fiber (50/125)
Tania Lozano-Hernandez   +4 more
doaj   +1 more source

Nonlinear Multimode Fiber Optics [PDF]

open access: yesConference on Lasers and Electro-Optics, 2018
We overview recent advances in the nonlinear optics of multimode optical fibers, including ultrabroadband sideband and supercontinuum generation, Kerr and Raman beam cleanup, modal modulation instabilities, four wave mixing, and second harmonic beam cleaning.
Wabnitz, S.   +6 more
openaire   +2 more sources

Learning to sense three-dimensional shape deformation of a single multimode fiber

open access: yesScientific Reports, 2022
Optical fiber bending, deformation or shape sensing are important measurement technologies and have been widely deployed in various applications including healthcare, structural monitoring and robotics.
Xuechun Wang   +4 more
doaj   +1 more source

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