Sensor Serat Optik Berstruktur Singlemode-Multimode-Singlemode (SMS) untuk Mendeteksi Ion Kadmium dalam Air
Detection of cadmium ions in the water has been done using SMS fiber structure as sensor. Instruments that has been used for this research are, ASE (Amplified Spontaneous Emission) in the wavelength range between 1510 nm – 1550 nm, optical fiber that has SMS fiber (Singlemode-Multimode-Singlemode) s...
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Summary: | Detection of cadmium ions in the water has been done using SMS fiber structure as sensor. Instruments that has been used for this research are, ASE (Amplified Spontaneous Emission) in the wavelength range between 1510 nm – 1550 nm, optical fiber that has SMS fiber (Singlemode-Multimode-Singlemode) structure, optical fiber that has SMS coreless fiber (Singlemode-Multimode Coreless-Singlemode) structure, cadmium solution (CdCl2) with various concentration, and OSA (Optical Spectrum Analyzer). This research uses the change of medium (CdCl2 solution) around multimode section of SMS fiber structure as cladding. The change in refractive index of CdCl2 solution induces a change of interference result spectrum which detected in form of the peak power change and the change of peak wavelength that has been passed out through SMS fiber structure. The result is consistent change of peak power and peak wavelength that has been passed out through the SMS fiber structure. The range of this sensor is 5 ppm-30 ppm. Linear range, sensitivity, and resolution of SMS Normal fiber structure sensor are 10 ppm – 30 ppm, 0,0066 dBm/ppm, dan 0,076 ppm. Linear range, sensitivity, and resolution of SMS Coreless fiber structure sensor are 5 ppm – 30 ppm, 0,0111 nm/ppm, dan 0,451 ppm. |
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