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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

Inactive Publication Date: 2017-09-05
上海淇岸生物科技有限公司
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Problems solved by technology

According to the principle of electrochemical or optical sensing, biosensors can be divided into two categories: electrochemical and optical. Traditional biosensors are basically discrete device structures, large in size, complex in structure, poor in stability and anti-interference, and poor in sensitivity.

Method used

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  • Optical fiber grating resonant biosensor
  • Optical fiber grating resonant biosensor

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Embodiment Construction

[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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Abstract

The invention relates to a fiber grating resonant biosensor, which belongs to the technical field of fiber optic sensors. It includes LD light source, fiber directional coupler, Labview monitoring platform, fiber grating demodulator, matching liquid, biosensing probe, biomolecular film, trapezoidal metal coating, F‑P resonant cavity, and microprocessed fiber grating. The present invention affects the quality factor of the fiber Bragg grating bioresonance sensor through the reaction of the biomolecular film with the substance to be measured, and then affects the resonance amplitude of the fiber Bragg grating tapered cantilever beam, and finally changes the reflection center wavelength of the fiber Bragg grating resonance biosensor, through F-P resonance The cavity matches the reflected signal and compensates the temperature to improve the detection accuracy. The invention has simple structure, satisfies the requirement of miniaturization of biological detection, and can realize real-time detection.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensors, in particular to a fiber Bragg grating (FBG: Fiber BraggGrating) resonant biosensor. Background technique [0002] Biosensors not only promote the rapid development of biotechnology, but also provide efficient and convenient methods for human disease diagnosis, treatment and prevention, but they also face new challenges. According to the principle of electrochemical or optical sensing, biosensors can be divided into two categories: electrochemical and optical. Traditional biosensors are basically discrete device structures, large in size, complex in structure, poor in stability and anti-interference, and poor in sensitivity. . How to provide instant, online, accurate and comprehensive analysis of tissues, cells, and living active molecules has become a hot issue in the field of biosensing technology. [0003] Optical sensors can generate output characteristic optical signals (fluo...

Claims

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Application Information

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IPC IPC(8): G01D5/26
CPCG01D5/268
Inventor 张大强邹建宇
Owner 上海淇岸生物科技有限公司
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