1 × 4 fused multicore singlemode fibre coupler:theory, fabrication and analysis

Bethuys, S.; Lablonde, L.; Rivoallan, L.; Auvray, P

doi:10.1049/el:19981072

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…The IC power sources use high power tetrodes or diacrodes [14]. The ITER sources are specified to be 1.5MW per module with a 35-65 MHz bandwidth and to withstand a VSWR of 2 for all phases.…”

Section: Icrh and Iccdmentioning

confidence: 99%

Progress and prospect of true steady state operation with RF

Jacquinot

2017

EPJ Web Conf.

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Abstract. Operation of fusion confinement experiments in full steady state is a major challenge for the development towards fusion energy. Critical to achieving this goal is the availability of actively cooled plasma facing components and auxiliary systems withstanding the very harsh plasma environment. Equally challenging are physics issues related to achieving plasma conditions and current drive efficiency required by reactor plasmas. RF heating and current drive systems have been key instruments for obtaining the progress made until today towards steady state. They hold all the records of long pulse plasma operation both in tokamaks and in stellarators. Nevertheless much progress remains to be made in particular for integrating all the requirements necessary for maintaining in steady state the density and plasma pressure conditions of a reactor. This is an important stated aim of ITER and of devices equipped with superconducting magnets. After considering the present state of the art, this review will address the key issues which remain to be solved both in physics and technology for reaching this goal. They constitute very active subjects of research which will require much dedicated experimentation in the new generation of superconducting devices which are now in operation or becoming close to it.

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Section: Icrh and Iccdmentioning

confidence: 99%

Progress and prospect of true steady state operation with RF

Jacquinot

2017

EPJ Web Conf.

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“…As well as in the MCVD method glass layers are formed by thermophoretic deposition of oxidation products of the initial reagents (SiCl 4 , GeCl 4 , POCl 3 , BBr 3 , etc) in a substrate silica tube at high temperature and their subsequent fusing.…”

Section: Fcvd and Mcvd Common Featuresmentioning

confidence: 99%

“…We consider the main features of the FCVD method (Furnace Chemical Vapor Deposition) [2]. In spite of the fact that the FCVD method has certain advantages and was used, in particular, by firms Draka and Alcatel, there are few publications on this method and references in the majority of cases have indirect character [3].…”

Section: Introductionmentioning

confidence: 99%

Furnace chemical vapor deposition (FCVD) method for special optical fibers fabrication

Malinin¹,

Zlenko

Akhmetshin

et al. 2011

SPIE Proceedings

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The features of the Furnace Chemical Vapor Deposition (FCVD) method of manufacturing preforms for special optical fibers are considered. It is shown that misalignment of substrate silica tube and furnace hole axes has a negative effect on the quality of fabricated preforms, leading to angular and radial asymmetry of the refractive index profile. Ways of getting rid of this and other disadvantages of the FCVD method are described. Some advantages of the FCVD method over the MCVD method are shown. It was demonstrated that the FCVD method, despite some drawbacks, allows to manufacture high-quality fiber preforms with good symmetry of the refractive index profile, and thus it is promising for fabrication of dispersion, dispersion varying and active fibers.

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“…The reflectivities of the FBGs making up the fibre Fabry-Perot interferometers (FFP) are sufficiently low such that the response resembles that of a two beam interferometer. The MCF is a cloverleaf design of the type used in [6]. The FBGs are $3 mm in length, exhibit reflectivities over the range 0.8-5.5%, and Bragg wavelengths between 1550.4 and 1551.0 nm.…”

mentioning

confidence: 99%

Ultra-high-sensitivity two-dimensional bend sensor

Cranch¹,

Flockhart²,

MacPherson

et al. 2006

Electron. Lett.

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A multicore fibre Fabry-Perot-based strain sensor interrogated with tandem interferometry for bend measurement is described. Curvature in two dimensions is obtained by measuring the difference in strain between three co-located low finesse Fabry-Perot interferometers formed in each core of the fibre by pairs of Bragg gratings. This sensor provides a responsivity enhancement of up to 30 times that of a previously reported fibre Bragg grating based sensor. Strain resolutions of 0.6 n epsilon/Hz(1/2) above 1 Hz are demonstrated, which corresponds to a curvature resolution of similar to 0.012 km(-1)/Hz(1/2)

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1 × 4 fused multicore singlemode fibre coupler:theory, fabrication and analysis

Cited by 5 publications

References 2 publications

Progress and prospect of true steady state operation with RF

Progress and prospect of true steady state operation with RF

Furnace chemical vapor deposition (FCVD) method for special optical fibers fabrication

Ultra-high-sensitivity two-dimensional bend sensor

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