Active ion-doped waveguide-plasmon resonance sensor based on upconversion of active ions and imaging system using the same

An active ion-doped wavelength-plasmon resonance imaging system for imaging a sample placed adjacent to a conductive thin film, the imaging system comprising:

• conductive film arrays for providing surface plasmons;
• a dielectric medium disposed at one side of the conductive film arrays;
• a light source for emitting an incident light beam to the conductive film arrays through the dielectric medium;
• dielectric film arrays doped with active ions capable of fluorescing by being excited with the incident light beam, the dielectric thin film deposited at the surface of the conductive film arrays opposite to the dielectric medium to act as an waveguide of surface plasmon waves and having a surface on which a sample is immobilized;
• and
• a photodetector for receiving the fluorescence from the active ions and imaging the sample from fluorescent intensity variations between each conductive film array.