Polariser based on a PbSe-clad optical waveguide in the infrared wavelength: the role of a buffer layer

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Date
1998
Authors
Chakravarty, G R
Priye, V
Pal, B P
Thyagarajan, K
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Abstract
The role of a dielectric buffer in the polarisation selectivity of a PbSe (cladding)/BaF2/CaF2 waveguide having transmission passband in the infrared wavelength of 3.4 μm is investigated. Results indicate that the presence of a buffer layer can greatly enhance the polarisation extinction ratio in such semiconductor-clad waveguides, enabling their use as a polarisation selector
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Keywords
buffer layer, semiconductor-clad waveguides
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