Monitoring of Microorganisms Growth Process Based on Fiber Bragg Grating Biosensor
The low refractive index sensing principle of the fiber Bragg grating (FBG) was analyzed theoretically, the temperature compensation scheme corresponding to the theoretical model was established. A single-end etched FBG was designed and fabricated for simultaneous measurement of temperature and refractive index. The experimental results demonstrated that the Bragg wavelength shift exhibits a nonlinear behavior with the temperature and yeast refractive index changes. The temperature change to the influence of the sensor was eliminated by numerical analysis, and then the relationship between the Bragg wavelength shift and the yeast refractive index is linear, the sensor yeast refractive index sensitivity of 5.42nm/riu was obtained.
Aimin Yang, Jingguo Qu and Xilong Qu
M. F. Zhao et al., "Monitoring of Microorganisms Growth Process Based on Fiber Bragg Grating Biosensor", Applied Mechanics and Materials, Vols. 84-85, pp. 586-589, 2011