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Proceedings Paper

Anti-reflective meta-surfaces on optical fibers: an alternative to AR coatings
Author(s): Devinder Saini; Ron Mehl; Don Russell
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Paper Abstract

The use of optical fiber in a multitude of applications has been increasing for several decades. This increased use has thrown up some limitations particularly in area of high-power delivery where the low damage threshold of conventional AR coatings has become an issue. Various methods such as the use end caps have been used to reduce this problem, but the fundamental issue remains, AR coatings have a low damage threshold which makes them difficult to use for high power applications. As the demand for high power delivery by optical fibers increases there is a need for more robust AR coatings for fiber end faces. AR coatings have various limitations such as very narrow bandwidth, a relatively low damage threshold compared to that of glass etc. There is need for a better solution. In this paper, we describe the use of meta-surfaces on the end of fibers that can replace standard AR coatings. These surfaces or motheye structures impart AR properties to the end faces of the fibers that are superior in almost every way. They have superior damage threshold than coatings as well as working over a broad wavelength range with no angular dependence. We compare the performance and properties of these structures with that of AR coatings.

Paper Details

Date Published: 21 February 2020
PDF: 7 pages
Proc. SPIE 11261, Components and Packaging for Laser Systems VI, 112610T (21 February 2020); doi: 10.1117/12.2546652
Show Author Affiliations
Devinder Saini, Fiberguide Industries, Inc. (United States)
Ron Mehl, Fiberguide Industries, Inc. (United States)
Don Russell, Fiberguide Industries, Inc. (United States)

Published in SPIE Proceedings Vol. 11261:
Components and Packaging for Laser Systems VI
Alexei L. Glebov; Paul O. Leisher, Editor(s)

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