Abstract
The propagation characteristics of an optical fiber are determined solely by its refractive-index profile. Conventional characteristics of an optical fiber are determined solely by its refractive-index profile. Conventional measurement methods, using refracted-near-field techniques, are both limited in resolution and prone to refractive-index calibration errors. To avoid these pitfalls, we introduce a fast, accurate method for characterizing the fine details of single-mode fiber core profiles, such as central dips and dopant diffusion which can influence modal propagation. This method is valid for matched- and depressed-cladding fibers. It used modal interferometry1,2 to determine group velocity equalization wavelengths for several mode pairs.
© 1991 Optical Society of America
PDF ArticleMore Like This
F. Gonthier, D. Ricard, S. Lacroix, and J. Bures
MC3 Integrated Photonics Research (IPR) 1991
S. Hamidi, X. Shan, A. S. Siddiqui, Z. S. Siddiqui, D. Simeonidou, and M. Ferrerira
CWF28 Conference on Lasers and Electro-Optics (CLEO:S&I) 1991
K. O. Hill, B. Malo, F. Bilodeau, D. C. Johnson, T. F. Morse, A. Kilian, L. Reinhart, and Kyunghwan Oh
PD3 Optical Fiber Communication Conference (OFC) 1991