섬유

surface flaws in zrf//4-based fluoride optical fibres with improved tensile strength

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 295
fluoride glass is widely recognized as the most promising material for ultra-low loss optical fibers. this letter reports surface flaw formation in zrf//4-based fluoride fibers. discussions are based on the effect of preform surface treatment on the tensile strength and fiber surface analysis using electron spin resonance (esr) measurements. tensile strengths were uniformly raised to 500 mpa by surface treatment. based on sub-critical crack growth data in which a growth parameter of 66. 5 was obtained, existing flaw sizes were estimated to be around 0. 1 $mu$ m. in addition, esr measurement revealed that the fiber surface consists of inherent fluoride. these results suggest that crystalline oxide islands, which act as flaws, are dispersed on the fluoride surface. 8 refs
이전글 다음글 목록