DocumentCode :
1012551
Title :
Polarising anisotropic fibres and their leaky modes
Author :
Snyder, A.W. ; Ankiewicz, A.
Author_Institution :
Australian National University, Institute of Advanced Studies, Canberra, Australia
Volume :
21
Issue :
23
fYear :
1985
Firstpage :
1105
Lastpage :
1106
Abstract :
Anisotropic fibres may be analysed in terms of equivalent isotropic fibres. This gives a clear physical picture of propagation, particularly the tunnelling loss mechanisms of leaky modes and the effect of a finite cladding on such modes. Slightly tilting the cladding optical (stress) axis relative to that of the core axis greatly amplifies the leakage reported previously for aligned optical axes, e.g. about 60 dB per metre for a 3° tilt instead of about 4 dB per kilometre. Thus, in theory, tilting can produce a highly effective polarising fibre (with a typical finite cladding) without relying on the polarisation dependence of bending losses.
Keywords :
guided light propagation; optical fibres; optical losses; aligned optical axes; anisotropic fibres; bending losses; core axis; finite cladding; isotropic fibres; leaky modes; optical axis; polarising fibre; propagation; tunnelling loss mechanisms;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el:19850784
Filename :
4251627
Link To Document :
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