Fabrication of OH-free, single-mode fiber by using slurry casting and rod-in-tube method

Tamotsu Yajima, Jun Yamamoto, Yusuke Kinoshita, Futoshi Ishii, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We present a new simple and low-cost process for fabricating low-loss single-mode fiber (SMF) cladding preforms by a modified slurry casting method, in which the cladding preform and a core rod obtained separately with the VAD method are assembled by a rod-in-tube method. The fabricated SMF showed almost the same loss characteristics as a standard SMF with a minimum loss of 0.19 dB/km at 1550nm and an OH-free loss spectrum, which were realized with an OH reduction process in a slurry casting based cladding. This OH reduction method plays an important role in preventing OH diffusion into the core and inner cladding.

Original languageEnglish
Article number20151005
Pages (from-to)1-9
Number of pages9
JournalIEICE Electronics Express
Issue number1
Publication statusPublished - 2015 Dec 16


  • Multi-core fiber
  • Rod-in-tube method
  • Single-mode fiber
  • Slurry casting method

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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