We present an optical sensor based on excitation of surface plasma waves in optical fiber structure consisting of a side-polished single-mode polarization-maintaining fiber and a metal overlayer. We describe two modes of operation of the sensor in which variations in the refractive index of the sample are determined by measuring changes in the transmitted optical power at a fixed wavelength (amplitude mode) and by measuring changes in the wavelength at which the resonant attenuation of the fiber mode occurs (spectral mode). We demonstrate that this design allows suppressing sensitivity of the sensor to deformation of the fiber yielding an improved stability and resolution.
Advances in development of miniature fiber optic surface plasmon resonance sensors
Optical Engineering for Sensing and Nanotechnology (ICOSN 2001) ; 2001 ; Yokohama,Japan
Proc. SPIE ; 4416
2001-05-08
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Advances in development of miniature fiber optic surface plasmon resonance sensors - [4416-17]
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