The optical sensor for the detection of specific substances and refractive index changes in gaseous, liquid, solid and porous samples is composed of integrated optical elements. It consists of a waveguiding film (1) equipped with a diffraction grating (4) and applied onto a substrate (2). For the selective...http://www.google.fr/patents/US4815843?utm_source=gb-gplus-shareBrevet US4815843 - Optical sensor for selective detection of substances and/or for the detection of refractive index changes in gaseous, liquid, solid and porous samples
Optical sensor for selective detection of substances and/or for the ...
