Polarisation-independent optical circulator consisting of two fibre-optic polarising beam splitters and two YIG spherical lenses

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Polarisation-independent optical circulator consisting of two fibre-optic polarising beam splitters and two YIG spherical lenses

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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 μm wavelength, and was almost independent of the incident polarisation angle. The backward attenuation was more than 18 dB.

Inspec keywords: optical waveguide components; optical communication equipment; optical fibres

Other keywords: single-mode fibres; optical communications equipment; insertion loss; two fibre-optic polarising beam splitters; polarisation-independent optical circulator; yttrium-iron garnet; backward attenuation; two YIG spherical lenses; low-loss splicing

Subjects: Fibre optics and fibre waveguides; Optical communication devices, equipment and systems; Optical communication; Fibre optics

References

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