Title :
Polarisation-independent optical circulator consisting of two fibre-optic polarising beam splitters and two YIG spherical lenses
Author :
Yokohama ; Okamoto, K. ; Noda, J.
Author_Institution :
NTT Electrical Communications Laboratories, Tokai, Japan
Abstract :
A novel polarisation-independent optical circulator, which employs two fibre-optic polarising beam splitters and two yttrium-iron-garnet (YIG) spherical lenses, is reported. The present structure has the advantage of low-loss splicing with other single-mode fibres. The insertion loss was 2.5 dB at 1.30 ¿m wavelength, and was almost independent of the incident polarisation angle. The backward attenuation was more than 18 dB.
Keywords :
optical communication equipment; optical fibres; optical waveguide components; backward attenuation; insertion loss; low-loss splicing; optical communications equipment; polarisation-independent optical circulator; single-mode fibres; two YIG spherical lenses; two fibre-optic polarising beam splitters; yttrium-iron garnet;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860252
