Spatial Coherence and Index-profiling in Optical Fibres
- 1 July 1979
- journal article
- research article
- Published by Taylor & Francis in Optica Acta: International Journal of Optics
- Vol. 26 (7) , 923-928
- https://doi.org/10.1080/713820074
Abstract
A simple relation is proved to exist between the coherence properties of the light emerging from the end cross-section of multi-mode optical fibres, excited by means of spatially incoherent sources, and their refractive index distributions. Experimental results showing the possibility of visualizing the index profile are reported.Keywords
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