Article
Improving a high-resolution fiber-optic interferometer through deposition of a TiO2 reflective coating by simple dip-coating
Review of Scientific Instruments
(2009)
Abstract
Fiber-optic based interferometers are used to detect small displacements, down to the subnanometer range. Coating the end of the optical fiber with a partially reflecting thin film greatly improves the resolution of interferometers by increasing the multiple reflections between the fiber end and the measured object. In this work, we present a quick and easy thin film deposition technique to coat the end of a single optical fiber by dip-coating a metal-organic precursor, which is then decomposed in a propane flame. The coated fiber was tested for morphology and usefulness for interferometric application. We found that this coating technique is much faster and easier than conventional thin coating techniques, and yields results that are comparable or better than can be achieved with sputtering or thermal evaporation.
Disciplines
Publication Date
2009
DOI
https://doi.org/10.1063/1.3244088
Citation Information
Peter M. Hoffmann, Venkatesh Subba-Rao, Sudakar Chandran, Jason Esmacher, et al.. "Improving a high-resolution fiber-optic interferometer through deposition of a TiO2 reflective coating by simple dip-coating" Review of Scientific Instruments (2009) Available at: http://works.bepress.com/peter_m_hoffmann/21/