Chitosan Layer Fabry - Perot Interferometer - Based Optical Fiber Sensor for Cadmium Ion Detection
نویسنده
چکیده
Optical sensors based on Fabry-Perot interferometer to detect cadmium ions is proposed. The sensor was fabricated by coating the tip of the optical fiber by chitosan. The two chitosan surfaces serve as mirrors which form a Fabry-Perot interferometer. The characterization results indicate that the sensor has a linear response with sensitivity of 0.0884 dBm/ppm with a correlation factor of 0.9665. The sensor reach steady state response in 5 minutes. Keywords—Cadmium ions, chitosan, Fabry-Perot interferometer, optical fiber sensor
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