Title :
Elimination of ´humps´ in methods for measuring the cutoff wavelength of single mode fibres
Author :
Wilczewski, F. ; Krahn, F.
Author_Institution :
Fachbereich Electrotechnik, Bergische Univ., Wuppertal, Germany
Abstract :
The measurement of the cutoff wavelength in single mode fibres is strongly affected by ´humps´. The Letter shows that the humps can be eliminated totally by replacing the higher-index primary coating by an oil, whose refractive index is matched exactly by controlling its temperature.
Keywords :
optical fibre testing; optical variables measurement; refractive index; cutoff wavelength; humps; index-matching oil; refractive index; single mode fibres; temperature control;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19931378
