Hollow core waveguides for radiation delivery and sensing: Monte carlo, ray tracing computer simulation

I. Steinberg*, E. Kaplan, M. Ben David, I. Gannot

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


The use hollow core waveguides (HCW's) in biomedicine includes two different tasks: Power delivery in order to facilitate clinical procedures and measurement of beam parameters in order to sense the surrounding tissue and create a diagnosis. To study the interaction between light and waveguide a computer simulation of ray propagation inside a HCW was developed. The simulation is based on the statistical method of Monte Carlo repeated trials and of ray tracing optics. The simulation accounts for both meridional and skew rays, rough fiber surface, Imperfect reflection, arbitrary fiber geometry and the insertion of absorbing molecular clusters inside the fiber lumen for sensing purposes. Here we test skew rays. At first the effect of skewness on the number of wall hits and the optical distance is investigated. Then different beam profiles are tested to fulfill different tasks: Sensing and power delivery. The role of skew rays in each scenario is discussed.

Original languageEnglish
Article number71730O
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
StatePublished - 2009
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX - San Jose, CA, United States
Duration: 24 Jan 200925 Jan 2009


  • Aerosol sensing
  • Hollow core waveguides
  • Monte Carlo
  • Skew rays


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