摘要
A biological solution concentration sensor based on a side-polished fiber(SPF)assisted fluid system is presented.The birefringence properties of the asymmetrically filled fluid in this structure and the relationship between the concentration of the biological solution and the refractive index are theoretically analyzed.It was found that the interference peaks had red-shifted with increasing concentration.A sensing sensitivity of 1.3871×10^(4)nm·mL/mol at 14.68×10^(-4)mol/mL was achieved within the experimental range after different concentrations of arginine solutions were injected into the sensing system.This sensing system can also be applied to measure the concentration of other biological solutions,providing the feasibility of real-time detection of biological solutions.
基金
supported by the National Natural Science Foundation of China(Nos.61705027,62005033,11704053 and 52175531)
the Basic Research Project of Chongqing Science and Technology Commission(No.CSTC-2020jcyj-msxm0603)
the Science and Technology Research Program of Chongqing Municipal Education Commission(No.KJQN202000609)。
