Optics and Photonics Society of Iran

Fluorescence resonance energy transfer or FRET is an unradiative transfer, in which energy is transferred from an excited fluorophore (donor) to nearby fluorophore (acceptor), that is in the steady state. This transfer will be caused donor be quenched and instead the acceptor will be fluorescent. This phenomenon can be used to measure the analyte concentration inside the body such as glucose. In this article, mechanism of an optical fiber glucose sensor based on FRET is studied. The high sensitivity FRET methods to measure glucose, linearity of the response of sensor, exponentiality of the fluorescence changes compared to increase glucose concentration, are results of this investigation.