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Optics Letters

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  • Vol. 23, Iss. 2 — Jan. 15, 1998
  • pp: 109–110

Graded-index characteristics in single-crystal fibers

J. H. Sharp, R. Illingworth, and I. S. Ruddock  »View Author Affiliations


Optics Letters, Vol. 23, Issue 2, pp. 109-110 (1998)
http://dx.doi.org/10.1364/OL.23.000109


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Abstract

Single-crystal fibers of Ti<sup>3+</sup>:Al<sub>2</sub>O <sub>3</sub>have been grown by the laser-heated pedestal growth technique and shown to exhibit radial refractive-index gradients. A refractive-index increase of approximately 12% in the fiber core with respect to the fiber sidewalls has been measured. The index profile can be fitted with a parabolic model. Postgrowth treatment of Cr<sup>3+</sup>:Gd<sub>3</sub>Sc <sub>2</sub>Al <sub>3</sub>O<sub>12</sub>fibers has been shown to produce a uniform cladding region with a graded-index core. The core index is some 12.5% larger than the cladding region, with an index profile shape that is approximately parabolic in nature.

© 1998 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2430) Fiber optics and optical communications : Fibers, single-mode

Citation
J. H. Sharp, R. Illingworth, and I. S. Ruddock, "Graded-index characteristics in single-crystal fibers," Opt. Lett. 23, 109-110 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-2-109


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