Distal tips for hollow glass waveguide delivery systems

Daniel J. Gibson, James A. Harrington

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


Hollow glass waveguides are an increasingly popular fiber-based delivery sytem for infrared laser power. They are low loss and can be bent to radii less than 3 cm while maintaining an excellent model distribution. The additional loss due to bending has been shown to scale linearly with the inverse of bending radius. For small bending radii however, this bending loss has been shown to increase beyond this trend due to mode mixing. Oscillating modes have been observed by varying the radius of curvature for a waveguide bent into a single complete loop. Curved HGW distal tip prototypes of bore sizes 530 and 320 μm, were made and exhibited a 0.56 and a 0.17 dB increase in loss respectively over the straight waveguides.

Original languageEnglish (US)
Pages (from-to)284-290
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2000
EventBiomedical Diagnostic, Guidance, and Surgical-Assist Systems II - San Jose, CA, USA
Duration: Jan 25 2000Jan 26 2000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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