Application of photonic crystals in submicron damage detection and quantification

We propose the use of photonic crystals (PC) for submicron damage detection and quantification. The idea is based on the inherent tie between PC topology and its corresponding spectral frequency response. We demonstrate using a simulation model that a PC sensor attached to a polymer substrate will experience significant changes in its band gap profile when microdamage is induced in the substrate. A damage metric, developed using principles of fuzzy pattern recognition, is used to quantify the change in the spectral response in relation to the level of induced damage. Finally, different damage scenarios demonstrating coincidence with results are examined and reported.