@inproceedings{dayton10b,
  author = {Amanda Dayton and Niloy Choudhury and Scott A. Prahl},
  title = {Measuring distance through turbid media: A simple frequency domain approach},
  booktitle = {SPIE Proceedings on Advanced Biomedical and Clinical Diagnostic Systems {VIII}},
  year = {2010},
  editor = {Tuan Vo-Dinh and Warren S. Grundfest and Anita Mahadevan-Jansen},
  pages = {},
  volume = {7555},
  abstract = {In both industry and medicine there is no optical technique to measure distance through light scattering media. Such a technique may be useful for localizing embedded structures, or may be a non-contact method of measuring turbid media. The limits of a frequency domain based technique were explored in three polyurethane optical phantoms.\\[3mm] We have demonstrated a simple method to measure the distance between an intensity modulated light source and detector in turbid media based on the proportionality of the phase lag to the distance. The limits of the technique were evident for distances less than 5\,mm, particularly when $\mu_s' <$0.1\,mm$^{-1}$ and distances greater than 55\,mm for the phantoms studied. This method may prove useful in industry and medicine as a non destructive way measure distance through light scattering media.},
}