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Proceedings Paper

Profile refractometry of optical fibers by using double-refracting microinterferometry
Author(s): Maksymilian Pluta
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Paper Abstract

Wavefront shear microinterferometric techniques are discussed as far as they apply to the determination of refractive index profiles of optical GRIN fibers. Special emphasis, however, is placed on a double-refracting microinterferometer with variable wavefront shear developed by the author of this paper more than 30 years ago and then used by a number of researchers for profile refractometer of both fiber and planar lightguides. The microinterferometer incorporates birefringent prisms of Wollaston's type which are capable of giving both fringe-field and uniform-field interference patterns with various wavefront shear. The basic feature of this systems is a combination of two simultaneously acting birefringent prisms localized in the image space of the microscope objective. Recently this instrument was used to phase-stepping transverse interferometry of GRIN fibers and planar waveguides and professionally computerized in its commercial version.

Paper Details

Date Published: 22 October 1996
PDF: 15 pages
Proc. SPIE 2943, Gradient-Index Optics in Science and Engineering, (22 October 1996); doi: 10.1117/12.255524
Show Author Affiliations
Maksymilian Pluta, Institute of Applied Optics (Poland)

Published in SPIE Proceedings Vol. 2943:
Gradient-Index Optics in Science and Engineering

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