A fiber optic sensor for the measurement of total cholesterol is designed and developed.The developed chitosan coated long period grating(LPG) sensor shows a sensitivity of 5.025×106 pm·m L/g in the measurem...A fiber optic sensor for the measurement of total cholesterol is designed and developed.The developed chitosan coated long period grating(LPG) sensor shows a sensitivity of 5.025×106 pm·m L/g in the measurement range of the sensor.The sensor also shows a linear response in the measured range of cholesterol levels,which is highly desirable for exploitation as a commercial cholesterol sensor.展开更多
In this paper, the effects of refractive index (RI) of surrounding medium and ambient temperature on the transmission characteristics of a long period grating (LPG) are experimentally analyzed. The spectral behavior o...In this paper, the effects of refractive index (RI) of surrounding medium and ambient temperature on the transmission characteristics of a long period grating (LPG) are experimentally analyzed. The spectral behavior of LPG is investigated when the ambient index is higher or lower than that of the cladding material. The results show that the refractive index sensitivity of lower order attenuation bands is very low compared with that of the highest order attenuation band. But in the case of temperature, the lower order attenuation bands of the LPG can also exhibit good sensitivity like the higher-order bands.展开更多
基金the fellowships and for the financial assistance under the UKIERI project
文摘A fiber optic sensor for the measurement of total cholesterol is designed and developed.The developed chitosan coated long period grating(LPG) sensor shows a sensitivity of 5.025×106 pm·m L/g in the measurement range of the sensor.The sensor also shows a linear response in the measured range of cholesterol levels,which is highly desirable for exploitation as a commercial cholesterol sensor.
文摘In this paper, the effects of refractive index (RI) of surrounding medium and ambient temperature on the transmission characteristics of a long period grating (LPG) are experimentally analyzed. The spectral behavior of LPG is investigated when the ambient index is higher or lower than that of the cladding material. The results show that the refractive index sensitivity of lower order attenuation bands is very low compared with that of the highest order attenuation band. But in the case of temperature, the lower order attenuation bands of the LPG can also exhibit good sensitivity like the higher-order bands.
