Crystallization behavior of optical fibers with multi layered structure for nonlinear optical devices

Naoki Iwafuchi, Hirokazu Masai, Yoshihiro Takahashi, Takumi Fujiwara, Seiki Ohara, Yuki Kondo, Naoki Sugimoto

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We examined the crystallization behavior of double clad fiber composed by BaO-TiO2-GeO2-SiO2 based glasses in detail. Formation of needle-like fresnoite-type Ba2Ti(Ge,Si) 2O8 were observed at the interface between the first and second clad. In addition, we employed the two-step heat-treatment (i.e., 728°C, 20 h + 749°C, 1 h) in fabrication of the crystallized fiber in order to obtain the highly-oriented fresnoite phase in the fiber structure. The first treating temperature, 728°C, which gives the maximum nucleation rate, was determined by differential thermal analysis. It was demonstrated that the two-step heat-treatment was effective for improvement of the orientation of fresnoite-type phase in the first clad of the double clad fiber.

Original languageEnglish
Pages (from-to)1115-1120
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume116
Issue number1358
DOIs
Publication statusPublished - 2008 Oct

Keywords

  • Glass ceramics
  • Nonlinear optics
  • Optical device

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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