Title :
Interferometric monomode fibre measurements: influence of source spectrum and second-order dispersion
Author_Institution :
Telecommunications Research Laboratory, Copenhagen, Denmark
Abstract :
Crosscorrelation interferometry with below-threshold semiconductor lasers for measuring the first-order dispersion ß¿ near the minimum-dispersion wavelength ¿0 of monomode fibres is investigated experimentally and theoretically. A Gaussian approximation for the source spectrum is invalid, but a simple formula is found for a Lorentzian spectrum. Second-order dispersion distorts the measurements even up to 50 nm from ¿0.
Keywords :
light interferometry; optical dispersion; optical fibres; Gaussian approximation; Lorentzian spectrum; below-threshold semiconductor lasers; crosscorrelation interferometry; first-order dispersion; minimum-dispersion wavelength; monomode fibre measurements; second-order dispersion; source spectrum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840046
