An optical sensor is provided. The optical sensor comprises an optical waveguide, at least one long period grating disposed within the optical waveguide and a reactive coating positioned in an operable relationship to the long period grating wherein the reactive coating causes the long period grating...http://www.google.fr/patents/US5864641?utm_source=gb-gplus-shareBrevet US5864641 - Optical fiber long period sensor having a reactive coating
Optical fiber long period sensor having a reactive coating
