Results 1 to 10 of about 129 (81)

Twisted Silica Microstructured Optical Fiber with Equiangular Spiral Six-Ray Geometry [PDF]

open access: yesFibers, 2021
This work presents fabricated silica microstructured optical fiber with special equiangular spiral six-ray geometry, an outer diameter of 125 µm (that corresponds to conventional commercially available telecommunication optical fibers of ratified ITU-T ...
Anton V. Bourdine   +20 more
doaj   +4 more sources

Twisted Silica Few-Mode Hollow GeO2-Doped Ring-Core Microstructured Optical Fiber

open access: yesPhotonics, 2023
This work presents the first instance of a silica few-mode microstructured optical fiber (MOF) being successfully fabricated with a hollow GeO2-doped ring core and by strongly inducing twisting up to 790 revolutions per meter.
Anton V. Bourdine   +20 more
doaj   +3 more sources

A Designed Twist Sensor Based on the SPR Effect in the Thin-Gold-Film-Coated Helical Microstructured Optical Fibers. [PDF]

open access: yesSensors (Basel), 2022
The traditional optical fiber-based twist sensing has the disadvantage of low sensitivity and difficulty of distinguishing the twist direction. Moreover, chiral isomerism may lead to sensing errors. In this paper, a six-hole helical microstructured optical fiber (HMSF) with a thin-gold-film-coat based on the surface plasmon resonance (SPR) effect was ...
Zhang M, Zhang L, Chen Q, Bai G, Li S.
europepmc   +4 more sources

Scaling effects in resonant coupling phenomena between fundamental and cladding modes in twisted microstructured optical fibers

open access: yesOptics Express, 2018
We show that in twisted microstructured optical fibers (MOFs) the coupling between the core and cladding modes can be obtained for helix pitch much greater than previously considered. We provide an analytical model describing scaling properties of the twisted MOFs, which relates coupling conditions to dimensionless ratios between the wavelength, the ...
Maciej Napiorkowski, Wacław Urbanczyk
exaly   +3 more sources

Six-Core GeO2-Doped Silica Microstructured Optical Fiber with Induced Chirality

open access: yesFibers, 2023
This work presents a fabricated silica few-mode microstructured optical fiber (MOF) with a special six GeO2-doped core geometry, an outer diameter of 125 µm (that corresponds to conventional commercially available telecommunication optical fibers), and ...
Anton V. Bourdine   +23 more
doaj   +1 more source

High-order orbital angular momentum generation in a helically twisted pig-nose-shaped core microstructured optical fiber

open access: yesOptics Express, 2021
We propose a helically twisted pig-nose-shaped core microstructured optical fiber (HPC-MOF) for orbital angular momentum (OAM) mode generation. It comprises seven air-hole rings hexagonally arranged with two air holes and one air-hole ring replaced, forming two cores in a line 3 µm from the fiber center and one ring-shaped core.
Mingjie Cui   +5 more
openaire   +2 more sources

Twisted Few-Mode Optical Fiber with Improved Height of Quasi-Step Refractive Index Profile. [PDF]

open access: yesSensors (Basel), 2022
Bourdine AV   +21 more
europepmc   +1 more source

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