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Polarisation referencing in refractometry using fibre to planar waveguide couplers incorporating thin metal layers

Polarisation referencing in refractometry using fibre to planar waveguide couplers incorporating thin metal layers

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The wavelength response of fibre to metal clad planar waveguide couplers has been investigated as a function of superstrate index. The TE resonance wavelengths remain fixed with superstrate index variation while the TM resonance position demonstrates good superstrate index sensitivity. Such a technique may be used for polarisation referencing and temperature compensation in refractometry.

Inspec keywords: refractive index measurement; sensitivity; claddings; integrated optics; metallic thin films; optical waveguides; optical couplers; optical fibres

Other keywords: integrated optics; TE resonance wavelengths; TM resonance; superstrate index sensitivity; temperature compensation; polarisation referencing; wavelength selective optical communications equipment; superstrate index; refractometry; metal clad planar waveguide couplers; superstrate index variation; wavelength response; fibre couplers; thin metal layers

Subjects: Optical refractometry and reflectometry; Integrated optics; Fibre couplers and connectors; Integrated optics; Fibre optics; Optical waveguides and couplers; Optical variables measurement; Optical waveguides

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