Evanescent wave two-colour fluorescence all-fibre biosensor
A biosensor, two-color fluorescence technology, used in fluorescence/phosphorescence, instruments, scientific instruments, etc., can solve the problems of dependence, real-time detection difficulties, complex and expensive detection instruments, etc., to achieve low background noise interference, strong anti-interference ability, fluorescence High collection efficiency
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[0019] The present invention will be described in detail below in conjunction with the drawings. However, it should be understood that the drawings are only provided for a better understanding of the present invention, and they should not be construed as limiting the present invention.
[0020] Such as figure 1 As shown, the evanescent wave two-color fluorescence all-fiber biosensor provided by the present invention includes a laser 1, an optical switch 2, a single-multimode fiber coupler 3, a dual bandpass filter 4, a photodetector 5, and a fiber probe 6, The sample pool 7 and the control system 8, wherein the optical fiber probe 6 is a tapered bifunctional biological probe modified by two biological molecules.
[0021] The two lasers 1 are respectively connected to an input port of the optical switch 2, and the output port of the optical switch 2 is connected to the single-mode fiber of the single-multimode fiber coupler 3 through an optical fiber. The optical switch 2 is used to...
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