Distributed optical fiber mode coupling biochemical sensor, optical fiber link, and sensing system

A distributed optical fiber, biochemical sensor technology, applied in the fields of biology, chemistry, and optical fiber sensing, can solve the problem that the long-period fiber grating resonant center wavelength has a great influence of environmental temperature changes, the precise determination of the resonant center wavelength is difficult, and it is difficult to distribute chemical and chemical sensors. Bio-sensing and other issues, to achieve the effect of compact structure, simple debugging and simple structure
CN1769870AInactive Publication Date: 2006-05-10重庆工学院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
重庆工学院
Publication Date
2006-05-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a distributed fiber coupling biochemistry sensor and corresponding fiber link circuit and sensing system. The inventive sensor as basic sensing unit of sensing system comprises a long period fiber grating, Bragg fiber grating and absorbing or sensing film for chemical or biochemical molecule; a plurality of such basic sensing unit connected serially with sequence and direction forming the fiber link circuit. Sensing system comprises the fiber link circuit and broad band light source, broad band coupler, initial Bragg fiber grating, fiber light spectrum demodulator and computer. The invention is characterized in that it takes wavelength-division multiplex to realize distributed sensing and has the advantages of simple and reliable.
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Description

technical field

[0001] The invention belongs to the technical fields of optical fiber sensing, biology and chemistry, and in particular relates to a distributed optical fiber mode coupling biochemical sensor, an optical fiber link and a sensing system. Background technique

[0002] Optical fiber chemical and biological sensor is a new type of sensing technology born in the mid-1970s. It solidifies substances that can identify and transduce chemical or biomolecules on optical fibers, and performs selective chemical or biomolecular recognition of the measured substances. , and then converted into various optical information to obtain chemical and biological information. In most sensors, the optical fiber only plays the role of light transmission, and some sensors are based on the change of the measured substance directly affecting the properties of the optical fiber waveguide for sensing. Optical fiber chemical and biological sensors have many advantages, such as high informa...

Claims

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