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Sensitivity versus polarisation in multilayer optical thin film design

Show simple item record Ejigu, Efrem K. Lacquet, Beartys M. 2018-02-16T09:17:28Z 2018-02-16T09:17:28Z 2012 2017 2012
dc.identifier.citation Ejigu EK, Lacquet BM. Sensitivity versus polarisation in multilayer optical thin film design. S Afr J Sci. 2012;108(7/8), Art. #999, 4 pages. v108i7/8.999 en_US
dc.description.abstract The design of a polarised optical filter is more complicated than that of a filter where the polarisation effect does not exist (at a normal angle of incidence). An error in the optical parameters, such as the physical thickness or refractive index of a layer, results in a change in the spectral performance of the multilayer structure. The correlation between error sensitivity and the polarisation effect of light in structures designed at an oblique angle was investigated. To illustrate the correlation, a perpendicular (S) and parallel (P) polarised beam splitter, at 0.9818 μm central wavelength, designed by genetic algorithm, was used. The beam splitter changes its state of polarisation according to the error in thickness simultaneously induced in each of the layers. The error was calculated by optimising the original design. The observation of the change of the state of polarisation as a result of error sensitivity leads to a different method of designing pure S-polarised or P-polarised optical filters. en_US
dc.format.extent S Afr J Sci 2012; 108(7/8) en_US
dc.format.medium pdf en_US
dc.language.iso en en_US
dc.publisher en_US
dc.relation.requires Adobe Acrobat Reader en_US
dc.relation.uri en_US
dc.rights National Research Foundation en_US
dc.rights.uri en_US
dc.subject sensitivity versus polarisation en_US
dc.subject multilayer optical thin film design en_US
dc.title Sensitivity versus polarisation in multilayer optical thin film design en_US
dc.type Article en_US
dc.rights.holder © 2012. The Authors. Licensee: AOSIS OpenJournals. This work is licensed under the Creative Commons Attribution License. en_US

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