Two Dimensional Near-Field Contouring Of Optical Fiber Cores

Ernest M. Kim; Douglas L. Franzen

doi:10.1117/12.934011

22 March 1983 Two Dimensional Near-Field Contouring Of Optical Fiber Cores

Ernest M. Kim, Douglas L. Franzen

Proceedings Volume 0355, Fiber Optics: Short-Haul and Long-Haul Measurements and Applications I; (1983) https://doi.org/10.1117/12.934011
Event: 26th Annual Technical Symposium, 1982, San Diego, United States

Abstract

A microcomputer controlled system is described for measuring the two dimensional near-field radiation pattern from optical fibers. Because radiation measurements may be made in two dimensions, a novel method has been devised whereby a constant intensity contour of the core is mapped. A modified Left-Most-Looking (LML) digital image encoding algorithm is used to map the contour of the fiber core. The iso-intensity map provides information about the tolerance field, in which all of the measured iso-intensity points lie, and core noncircularity. Such information is useful in determining coupling efficiency at splices, connector joints, and terminal points. This paper will discuss the measurement apparatus, accuracy, precision, stability, and method of analysis of the NBS system. In addition, results will be presented on measurements of core diameters, the length dependence of such measurements, wavelength dependence of the radiation patterns, power law fits to the patterns, calibration apparatus, and iso-intensity contours of telecommunications-grade fibers.

Citation Download Citation

Ernest M. Kim and Douglas L. Franzen "Two Dimensional Near-Field Contouring Of Optical Fiber Cores", Proc. SPIE 0355, Fiber Optics: Short-Haul and Long-Haul Measurements and Applications I, (22 March 1983); https://doi.org/10.1117/12.934011

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