A novel fluid sensing system based on side-polished optical fiber(SPOF)is proposed,which realizes the fluid replaceability and effective refractive index(RI)sensing characteristics.Numerical investigations demonstrate...A novel fluid sensing system based on side-polished optical fiber(SPOF)is proposed,which realizes the fluid replaceability and effective refractive index(RI)sensing characteristics.Numerical investigations demonstrate that the photonic bandgap effect can be obtained if the RI of liquid is higher than that of substrate material in the wavelength range studied.The relationship between bandgap edge wavelength and RI is studied theoretically.The SPOF with a depth of 57μm is used in the experiment to realize the construction of the fluid channel.After filling three different liquids,the result shows that the wavelength of the bandgap edge has a red shift with RI increased,which is nearly linear in the RI range of 1.56—1.6 with a sensitivity about 5543.64 nm/RIU.The proposed sensing system can be flexibly applied to the field of fluid characteristic sensing such as biochemical solution characteristic detections.展开更多
基金supported by the National Key Research and Development Program of China(Nos.2018YFF01010202 and 2018YFF01010201)the National Natural Science Foundation of China(Nos.61705027 and 11704053)+2 种基金the Innovation Leader Talent Project of Chongqing Science and Technology(No.CSTC-CXLJRC201711)the Basic Research Project of Chongqing Science and Technology Commission(No.CSTC-2018jcyjax0619)the Science and Technology Research Project of Chongqing Education Commission(No.KJQN201900615)。
文摘A novel fluid sensing system based on side-polished optical fiber(SPOF)is proposed,which realizes the fluid replaceability and effective refractive index(RI)sensing characteristics.Numerical investigations demonstrate that the photonic bandgap effect can be obtained if the RI of liquid is higher than that of substrate material in the wavelength range studied.The relationship between bandgap edge wavelength and RI is studied theoretically.The SPOF with a depth of 57μm is used in the experiment to realize the construction of the fluid channel.After filling three different liquids,the result shows that the wavelength of the bandgap edge has a red shift with RI increased,which is nearly linear in the RI range of 1.56—1.6 with a sensitivity about 5543.64 nm/RIU.The proposed sensing system can be flexibly applied to the field of fluid characteristic sensing such as biochemical solution characteristic detections.
