Interferometric measurement of refractive-index change in photosensitive glass.

@article{Dennis2001InterferometricMO,
  title={Interferometric measurement of refractive-index change in photosensitive glass.},
  author={Tasshi Dennis and Erin M. Gill and Sarah L. Gilbert},
  journal={Applied optics},
  year={2001},
  volume={40 10},
  pages={1663-7}
}
We report on a technique for determining the change in the refractive index of photosensitive glass. We have demonstrated our interferometer-based technique on fiber preform and bulk glass samples, achieving an optical-path-difference (OPD) repeatability of 0.2 nm. For the bulk glass sample we measured an OPD of 15.2 ? 3.0 nm, corresponding to an index… CONTINUE READING