Novel Polarization Selective Optical Fibre Devices Utilising Thin Metal Film Plasmon Resonances

W. Johnstone; G. Stewart; B. Culshaw; T. Hart

doi:10.1117/12.947527

21 September 1988 Novel Polarization Selective Optical Fibre Devices Utilising Thin Metal Film Plasmon Resonances

W. Johnstone, G. Stewart, B. Culshaw, T. Hart

Proceedings Volume 0949, Fibre Optics '88; (1988) https://doi.org/10.1117/12.947527
Event: Sira/Fibre Optics '88, 1988, London, United Kingdom

Abstract

The nature of surface plasmons supported by thin metal films is discussed. A dispersion equation is presented and used to define theoretically the design criteria for in line fibre optic polarizers based on the polarization selective evanescent coupling between an optical fibre and the plasmon modes of a thin aluminium film. The experimentally observed design conditions were consistent with the theory and a high quality polarizer and polarizing coupler demonstrating extinction ratios in excess of 50dB and 30dB (per arm) respectively were realised.

Citation Download Citation

W. Johnstone, G. Stewart, B. Culshaw, and T. Hart "Novel Polarization Selective Optical Fibre Devices Utilising Thin Metal Film Plasmon Resonances", Proc. SPIE 0949, Fibre Optics '88, (21 September 1988); https://doi.org/10.1117/12.947527

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