Sensitive voltage interrogation method using electro-optically tunable SPR sensors.
Opt Express
; 19(27): 26651-9, 2011 Dec 19.
Article
en En
| MEDLINE
| ID: mdl-22274249
ABSTRACT
A novel voltage interrogation method using electro-optically tunable waveguide-coupled surface plasmon resonance sensors is demonstrated. Before measurements, we use a bicell photodetector to detect the reflectance from the sensor and take the differential signal from the photodetector as the resonance condition. For different analytes, by scanning the DC voltage on the waveguide layer of the sensor chip, the resonance condition can be maintained the same. Under this condition, we record the values of this voltage, namely the resonant voltage. Theoretical calculations and experimental results show the resonant voltage has a highly linear and sensitive response to analyte's refractive index. This method is simple in configuration, and complicated signal processing algorithms can be avoided.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Transductores
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Diseño Asistido por Computadora
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Resonancia por Plasmón de Superficie
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Electrónica
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Dispositivos Ópticos
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Modelos Teóricos
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Año:
2011
Tipo del documento:
Article