Articles with "ring core" as a keyword



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Exploring next generation of IOT devices compatible few mode assisting ring core elliptical cladding optical fiber

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Published in 2020 at "Wireless Networks"

DOI: 10.1007/s11276-019-02153-w

Abstract: In this paper, the design method of few mode elliptical ring core fiber (E-RCF) supporting up to 10 spatial linearly polarized (LP) modes is proposed. With the support of central circular hole, the maximum numbers… read more here.

Keywords: exploring next; iot; mode; fiber ... See more keywords
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Magnetic Fluid-Injected Ring-Core-Based Micro-structured Optical Fiber for Temperature Sensing in Broad Wavelength Spectrum

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Published in 2020 at "Journal of Electronic Materials"

DOI: 10.1007/s11664-020-08231-6

Abstract: A highly sensitive temperature sensor of magnetic fluid (ethanol) using a ring-core-based microstructured optical fiber (MOF) with two large elliptical air holes beside the ring core has been suggested by the finite element method. Highly… read more here.

Keywords: temperature; magnetic fluid; core; ring core ... See more keywords
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On the measurement of sub-surface residual stresses in SS 304L welds by dry ring core technique

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Published in 2017 at "Measurement"

DOI: 10.1016/j.measurement.2017.04.043

Abstract: Abstract Sub surface residual stresses in thick multi-pass stainless steel butt welded joints were measured by dry ring core technique. To accomplish the task of dry ring coring, special tools were developed such that machining… read more here.

Keywords: dry ring; surface residual; surface; residual stresses ... See more keywords
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Few-mode ring-core quantum dots-doped optical fiber amplifier

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Published in 2019 at "Optical Fiber Technology"

DOI: 10.1016/j.yofte.2019.05.003

Abstract: Abstract Optical fiber amplifier is a vital device in optical communication system, which can directly amplify optical signal. We theoretically propose a type of few-mode quantum dots-doped fiber amplifier (FM-QDFA) in this paper, capable of… read more here.

Keywords: quantum dots; ring core; optical fiber; fiber amplifier ... See more keywords
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Preventing isomerization of the fused-ring core by introducing methyl group for efficient non-fullerene acceptors

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Published in 2021 at "Journal of Materials Chemistry C"

DOI: 10.1039/d1tc02860j

Abstract: Different cyclization reaction sites on the benzene ring will produce isomers during the cyclization process for the synthesis of the small-molecule acceptors. Herein, we developed a structural unit (named BTMe)... read more here.

Keywords: preventing isomerization; introducing methyl; ring core; fused ring ... See more keywords
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Modeling of a ring-core trench-assisted few-mode BDFA for seven-mode signal gain equalization.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.477691

Abstract: In this paper, a ring-core trench-assisted few-mode bismuth-doped fiber amplifier (BDFA) is simulated on the basis of the three-energy level. The fiber is designed to support four modes of signal group transmission for practical considerations,… read more here.

Keywords: gain equalization; core; ring core; bdfa ... See more keywords
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Design and analysis of a combined-ring core weakly coupled few-mode fiber with six linearly polarized modes and an ultra-large effective index difference.

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Published in 2019 at "Applied optics"

DOI: 10.1364/ao.58.004373

Abstract: The theory and properties of weakly coupled few-mode fiber (FMF) have been investigated by means of mode power distribution. According to that, a novel weakly coupled FMF with a combined-ring core structure has been proposed.… read more here.

Keywords: ring core; combined ring; index; weakly coupled ... See more keywords
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Scalable mode division multiplexed transmission over a 10-km ring-core fiber using high-order orbital angular momentum modes.

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Published in 2018 at "Optics express"

DOI: 10.1364/oe.26.000594

Abstract: We propose and demonstrate a scalable mode division multiplexing scheme based on orbital angular momentum modes in ring core fibers. In this scheme, the high-order mode groups of a ring core fiber are sufficiently de-coupled… read more here.

Keywords: mode; mode group; group; mode division ... See more keywords
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Analysis of modal coupling due to birefringence and ellipticity in strongly guiding ring-core OAM fibers.

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Published in 2019 at "Optics express"

DOI: 10.1364/oe.27.008308

Abstract: After briefly recalling the issue of OAM mode purity in strongly-guiding ring-core fibers, this paper provides a methodology to calculate the coupling strength between OAM mode groups due to fiber perturbations. The cases of stress… read more here.

Keywords: strongly guiding; guiding ring; birefringence; core ... See more keywords
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Amplification of 18 OAM modes in a ring-core erbium-doped fiber with low differential modal gain.

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Published in 2019 at "Optics express"

DOI: 10.1364/oe.27.038087

Abstract: We theoretically propose two orbital angular momentum (OAM) erbium-doped ring-core fiber (RCF) amplifiers capable of providing relatively uniform gain for 22 modes with 18 OAM ones over the C-band. Two schemes of doping profile are… read more here.

Keywords: doped fiber; gain; differential modal; erbium doped ... See more keywords
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Stable generation of cylindrical vector beams with an all-fiber laser using polarization-maintaining and ring-core fibers.

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Published in 2020 at "Optics express"

DOI: 10.1364/oe.395757

Abstract: An all-fiber laser using polarization-maintaining and ring-core fibers that are capable of automatically generating stable TE01 and TM01 modes is proposed and demonstrated experimentally. Two vector-mode coupling long-period fiber gratings (LPFGs) fabricated by a high-frequency… read more here.

Keywords: laser; polarization; fiber laser; ring core ... See more keywords