1 results about "Resonance fluorescence" patented technology

The application relates to a surface plasmon resonance-fluorescence dual-mode seawater iron ion detection method and system of a tapered optical fiber probe, and belongs to the technical field of optical fiber sensing and ion detection. The application aims at the problems of single detection mechanism, insufficient anti-interference ability in a complex environment and complex system structure of an existing iron ion detection mechanism, and provides a dual-mode detection scheme. The system excites a fluorescence response through a first light source, generates an SPR response through a second light source, contacts a tapered optical fiber probe plated with a gold film with a to-be-detected liquid containing tannic acid, and realizes synchronous acquisition of dual signals. A signal processing module performs fusion calculation based on a dual-signal quantitative analysis model, and cross verification is realized through the synergistic effect of the two optical response mechanisms. The application not only significantly improves the accuracy and stability of detection results, but also simplifies the probe preparation process, improves the system integration, and is suitable for on-site rapid detection of iron ions in seawater and other complex matrices.