A double-die modification of micro-pulling-down method for in situ clad/core doping of fiber crystal

Boris M. Epelbaum, Katsuhiko Inaba, Satoshi Uda, Kiyoshi Shimamura, Minoru Imaeda, Vladimir V. Kochurikhin, Tsuguo Fukuda

研究成果: Article査読

11 被引用数 (Scopus)

抄録

A novel technique for single-crystal fibers cladding immediately in the course of the growth process based on the micro-pulling-down (μ-PD) method has been proposed and verified. The principle of the double-die-μPD implies that the capillary nozzle provides capillary feeding to the growing fiber simultaneously from the inner pipe channel with undoped melt and from the outer surface with doped melt. The menisci shape, melt flow outside the nozzle, control of the doped/undoped melt ratio and process stability are discussed in terms of capillarity. Examples of practical crucible design are discussed in connection with radial dopant distribution. Mn-doped lithium niobate fiber, 0.5 and 0.7 mm in diameter, having 40-60 μm doped outer area were grown successfully.

本文言語English
ページ(範囲)559-566
ページ数8
ジャーナルJournal of Crystal Growth
179
3-4
DOI
出版ステータスPublished - 1997 8月

ASJC Scopus subject areas

  • 凝縮系物理学
  • 無機化学
  • 材料化学

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