Search Results - "SEKIYA, E. H"
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Control of Glass-Forming Process During Fiber-Drawing to Reduce the Rayleigh Scattering Loss
Published in Journal of the American Ceramic Society (01-01-2006)“…Limit of the Rayleigh scattering loss in Ge‐doped silica core fiber was estimated from the results of structural relaxation and the Rayleigh scattering…”
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Difference between X-ray-induced and 451 nm LD-induced photodarkening in DyAlGe-doped silica glasses
Published in Japanese Journal of Applied Physics (01-04-2023)“…The difference between X-ray-induced photodarkening (X-PD) and 451 nm laser diode (LD) induced PD (LD-PD) was investigated in DyAlGe-doped silica glasses. The…”
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Local structure of Yb3+ ions and X-ray induced defect in Yb-doped silica glass
Published in Japanese Journal of Applied Physics (19-11-2018)“…The local structure of Yb3+ ions in Yb-doped silica glass was investigated by extended X-ray absorption fine structure, the Rayleigh scattering and optical…”
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Influences of Yb3+ ion concentration on the spectroscopic properties of silica glass
Published in Journal of non-crystalline solids (01-11-2008)Get full text
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Fabrication of Yb-doped silica glass through the modification of MCVD process
Published in Journal of non-crystalline solids (01-11-2008)“…A method to deliver Yb and Al compounds in vapor phase to the reaction/deposition zone has been devised for modified chemical vapor deposition (MCVD) process…”
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Characterization of Yb3+ clusters in silica glass preforms
Published in Optical materials (01-10-2008)Get full text
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Crystalline and amorphous phases of GeO2 in VAD silica-germania soot preform
Published in Journal of non-crystalline solids (01-08-2000)“…In Ge-doped optical fiber, produced by vapor-phase axial deposition (VAD) technique, the refractive index profile is controlled by the radial distribution…”
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Conference Proceeding Journal Article -
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Small-Angle X-ray Scattering of Heat-Treated Flame-Fused Silica Glass from Amorphous and Crystalline Powders
Published in Journal of applied crystallography (01-12-1997)“…High‐quality as‐fused silica glass, heat treated at 1523 K and prepared by the flame‐fusion process using natural crystalline quartz and high‐purity amorphous…”
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Local structure of Yb 3+ ions and X-ray induced defect in Yb-doped silica glass
Published in Japanese Journal of Applied Physics (01-01-2019)Get full text
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Local structure of Yb^sup 3+^ ions and X-ray induced defect in Yb-doped silica glass
Published in Japanese Journal of Applied Physics (01-01-2019)“…The local structure of Yb3+ ions in Yb-doped silica glass was investigated by extended X-ray absorption fine structure, the Rayleigh scattering and optical…”
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Dependence of H2/O2 ratio and GeO2 content on the enhancement of second-order non-linearity related defects in Ge-doped optical fiber preforms
Published in Materials science & engineering. B, Solid-state materials for advanced technology (25-08-2004)“…In this research, we studied the influence of the process conditions through the H2/O2 ratio and the GeO2 content, on the formation of germanium oxygen…”
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Effect of H2/O2 ratio on the GeO2 concentration profile in SiO2:GeO2 glass preforms prepared by vapor-phase axial deposition
Published in Journal of non-crystalline solids (2000)“…GeO2 radial concentration in SiO2 glass preforms, prepared by vapor-phase axial deposition (VAD) method, was analyzed by XRF measurements. The results were…”
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Conference Proceeding Journal Article -
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Effect of Chlorine on Rayleigh Scattering Reduction in Silica Glass
Published in Japanese Journal of Applied Physics (15-12-2003)“…The Rayleigh-scattered light intensities of SiO2 glasses containing Cl with concentrations from 0 to 1.8 mol% were measured. The scattered intensity was found…”
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Dependence of flame characteristics on the bubble generation and hydroxyl content in silica glass
Published in Radiation effects and defects in solids (01-10-1998)“…High quality silica glass was prepared by flame fusion Verneuil technique using two types of silica powders: purified natural quartz and synthetic sol-gel…”
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Effect of processing parameters on control of defect centers associated with second-order harmonic generation and photosensitivity in SiO2:GeO2 glass preforms
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-06-2006)“…In this research, the effect of the H2/O2 ratio and the processing temperature parameters on the inducing and enhancement of the defect centers associated to…”
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Refractive index and density in F- and Cl-doped silica glasses
Published in Applied physics letters (18-04-2005)“…The refractive index and density of fluorine- and chlorine-doped silica glasses were measured as functions of fictive temperature. The halogen concentrations…”
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Reduction of crosstalk by hole-walled multi-core fibers
Published in OFC/NFOEC (01-03-2012)“…Hole-walled multi-core fibers (HW-MCFs) are proposed to reduce the crosstalk with arrayed holes walling. We have fabricated a HW-MCF with an effective area…”
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