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OSF - Optically Sensitive Switching Films

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06.08.2008

Conventional electrical sensors push their limits whenever they are operated in damp or electromagnetically aggressive environments. Moreover, their use in explosion-proof areas is only possible - if at all - with high expenditure. Scientists of the Institute for Applied Nano- and Optical Technologies (inano) of Niederrhein University have now invented optical sensors that are no longer subject to these restrictions. The sensors consist of closely connected planar waveguides that differ from one another on the basis of their refractive index. Light is normally only guided in one of the waveguides. As a result of the mechanical deformation of the arrangement light is now coupled into the other waveguide and can then be detected.

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