Title :
Excess loss in practical depressed-cladding fibres
Author :
Love, J.D. ; Henry, W.M.
Author_Institution :
Opt. Sci. Centre, Australian Nat. Univ., Canberra, ACT, Australia
fDate :
5/24/1990 12:00:00 AM
Abstract :
An anomalous loss spike observed in the absorption spectrum beyond the cutoff wavelength of the fundamental mode of a straight depressed-cladding fibre can be attributed to supermode coupling caused by slight variations in fibre diameter occurring during the fabrication process. Bending of the fibre shifts this coupling to a higher wavelength.
Keywords :
optical fibres; optical losses; absorption spectrum; anomalous loss spike; bending losses; excess loss; fibre bending effects; fundamental mode; slight variations in fibre diameter; straight depressed-cladding fibre; supermode coupling;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900474
