Fabrication and transmission characteristics of infrared hollow fiber based on silver-clad stainless steel pipes

Katsumasa Iwai, Akihito Hongo, Hiroyuki Takaku, I. Mitsunobu Miyagi, Jun Ichi Ishiyama, Xiao Xu Wu, Yi Wei Shi, Yuji Matsuura

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Silver-clad stainless steel pipe is used as the supporting tube for the fabrication of infrared hollow fiber. The hollow fiber has high mechanical strength and is highly durable for use in the medical sterilization process. Film of a cyclic olefin polymer layer or silver iodide (AgI) was coated internally to reduce the transmission loss. A liquid-filling method is proposed for coating the AgI layer. Multiple coating processes proved to be effective to increase the AgI film thickness. A treatment of sodium thiosulfate water solution is also proposed to reduce the film thickness. The film thickness can be accurately controlled by combining the coating and decoating techniques. A loss of less than 0:2 dB was obtained for CO2 laser light for a hollow pipe with a length of 280mm and an inside diameter of 0:75mm.

Original languageEnglish
Pages (from-to)6207-6212
Number of pages6
JournalApplied optics
Volume48
Issue number32
DOIs
Publication statusPublished - 2009 Nov 10

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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