Optical fiber grating resonant biosensor
A biosensor, fiber grating technology, applied in the direction of converting sensor output, using optical devices to transmit sensing components, instruments, etc., can solve problems such as poor stability and anti-interference, poor sensitivity, complex structure, etc. The effect of strong anti-electromagnetic interference ability and high precision
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[0019] The present invention will be further described below in conjunction with accompanying drawing:
[0020] like figure 1 As shown, a fiber grating resonant biosensor includes LD light source (1), fiber directional coupler (2), Labview monitoring platform (3), fiber grating demodulator (4), matching liquid (5), biosensor sensing probe (6), biomolecular film (7), trapezoidal metal coating (8), F-P resonant cavity (9), microprocessed fiber grating (10); described LD light source (1) and optical fiber directional coupler One port is connected, the other port of the directional coupler is connected to the fiber grating demodulator (4), the Labview monitoring platform (3) is connected to the other end of the fiber grating demodulator (4), and the third port of the fiber directional coupler is connected to the The biological sensing probe (6) is connected, and the fourth port of the optical fiber directional coupler is immersed in the matching liquid (5) to form a complete bio...
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