Title :
Azimuthal filtering technique for effective LP11 cutoff wavelength measurement in optical fibres
Author :
Blondy, J.M. ; Blanc, A.M. ; Clapeau, M. ; Facq, P.
Author_Institution :
Institut de Recherches en Communications Optiques et Microondes, UER des Sciences, CNRS UA 356, Limoges, France
Abstract :
Azimuthal periodicities vanish in the near- and far-field patterns when the LP11 mode reaches the cutoff point. This criterion leads to a simple, fast and accurate method for effective cutoff wavelength determination in monomode optical fibres.
Keywords :
optical fibres; optical testing; optical variables measurement; LP11 mode; azimuthal filtering; azimuthal periodicities; cutoff wavelength measurement; far-field patterns; monomode; near-field pattern; optical fibres; single mode fibres;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870376
