Quantum Electronics · 1997 · 94 citations · 4 references
EngineeringBioengineeringBiomedical EngineeringBiosensorsOpticsSensorsInterferometryOptical BiosensorsOptical SensingOptical SensorsPlasmonicsRefractive IndexInterferometric BiosensingInterferometric SensorsPlasmonic BiosensorsPlasmonic SensingRefractive Index SensingSensor ApplicationsSurface Plasmon Resonance BiosensorsSurface Plasmon Resonance Sensors
An interferometric method was used for the first time to detect, under surface-plasmon resonance conditions, phase changes in a reflected beam caused by changes in the refractive index of the medium being diagnosed. The threshold of the sensitivity to changes in the refractive index was estimated to be 4 × 10-8. The proposed interferometer can be used successfully in bio and chemical-sensor systems.
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