Optical properties of small-bore hollow glass waveguides

Yuji Matsuura, Todd Abel, James A. Harrington

Research output: Contribution to journalArticlepeer-review

125 Citations (Scopus)


Hollow glass waveguides with a 250-μm i.d. have been fabricated with a liquid-phase deposition technique that uses silica tubing as a base material. The losses of the 250-μm-bore guide measured at CO2 laser wavelengths are as low as 2.0 dB/m. The straight losses for the hollow guides are in good agreement with theoretically predicted losses as a result of the nearly ideal structure of the guides. It is also shown that the guides have low bending losses, a nearly pure-mode delivery, and good high-power laser transmission. By proper design of the dielectric thickness, the guide is also able to deliver Er:YAG laser energy with a low loss of 1.2 dB/m for the 320-μm-bore waveguide. Because the hollow glass waveguide is very flexible and robust, it is quite suitable for medical applications.

Original languageEnglish
Pages (from-to)6842-6847
Number of pages6
JournalApplied optics
Issue number30
Publication statusPublished - 1995 Oct
Externally publishedYes


  • Biomedical optics
  • Hollow waveguides
  • Infrared fibers

ASJC Scopus subject areas

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


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