Li Hua,Hong-yun Gao,Min Li,En-jie Sun.An efficient fiber fluorescence probe for the detection of trace elements[J].Optoelectronics Letters,2013,9(2):139-142 An efficient fiber fluorescence probe for the detection of trace elements Author Name Affiliation E-mail Li Hua  Department of Physics, Wuhan University of Technology, Wuhan, 430070, China Department of Chemistry, Wuhan University of Technology, Wuhan, 430070, China  hualidehua@163.com  Hong-yun Gao  Department of Physics, Wuhan University of Technology, Wuhan, 430070, China Department of Chemistry, Wuhan University of Technology, Wuhan, 430070, China    Min Li  Department of Physics, Wuhan University of Technology, Wuhan, 430070, China Department of Chemistry, Wuhan University of Technology, Wuhan, 430070, China    En-jie Sun  Department of Physics, Wuhan University of Technology, Wuhan, 430070, China Department of Chemistry, Wuhan University of Technology, Wuhan, 430070, China    Abstract:       A high-efficiency capillary-fiber optic probe is developed for measuring the concentration of trace elements. The optimal probe consists of an excitation fiber (incident fiber) and a ring of collection fibers which is made up of 6 fibers. Both simulation and experiment results show that the structure gives the higher coupling efficiency with a reasonable capillary diameter. The coupling efficiency of the probe is determined by the number and arrangement of the fibers, internal diameter and length of the fiber optic sensing probe, and the end reflectivity of the capillary. The concentration of the carbonic anhydrase solution and dezincification reagents also affect the efficiency. A fluorescence efficiency of 2.4% is obtained in zinc detection experiment. Hits: 4109 Download times: 155 View Full Text    Download reader