Cascade micro cavities based digital integrated-optical waveguide sensor

An integrated optical waveguide and sensor technology, applied in the field of optical sensing, can solve the problems that hinder the miniaturization, portability and low cost of the optical sensing system, and achieve the effect of easy expansion, high reliability and simple structure

Inactive Publication Date: 2010-05-12
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

At this time, for high-sensitivity sensing applications, expensive high-resolution (such as 0.01nm) spectrometers often become indispensable and important detection instruments, which hinders the miniaturization, portability and cost reduction of optical sensing systems

Method used

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  • Cascade micro cavities based digital integrated-optical waveguide sensor
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  • Cascade micro cavities based digital integrated-optical waveguide sensor

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Embodiment Construction

[0023] refer to figure 1 , the digital integrated optical waveguide sensor based on cascaded microcavities of the present invention includes a constant microcavity 1, an input waveguide 3, a sensing microcavity 2, a connecting waveguide 4, an output waveguide 5 and a sample tank 6 ; each sensing microcavity 2 is placed in the middle of the sample groove 6 respectively, the input waveguide 3 is located at one side of the constant microcavity 1, one end of the input waveguide 3 is coupled with the constant microcavity 1, and the other end is the light source of the entire optical waveguide sensor Access port; one end of the waveguide 4 is coupled with the constant microcavity 1, the other end of the waveguide 4 is coupled with the sensing microcavity 2, one end of the output waveguide 5 is coupled with the sensing microcavity 2, and the output waveguide 5 is coupled with the sensing microcavity 2. The other end is the sensing signal output end.

[0024] The substance to be meas...

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Abstract

The invention provides a cascade micro cavities based digital integrated-optical waveguide sensor, comprising a constant micro cavity, an input waveguide, n sensing micro cavities, n connected waveguides, n output waveguides and n sample cells, wherein n is not less than 1. The sensing micro cavities are arranged in the sample cells. The input waveguide is arranged at one side of the constant micro cavity. One end of the input waveguide is coupled with the constant micro cavity and the other end thereof serves as the optical source incoming end of the whole optical waveguide sensor. One end of each connected waveguide is coupled with the constant micro cavity and the other end thereof is coupled with one sensing micro cavity. One end of each output waveguide is coupled with one sensing micro cavity and the other end thereof serves as the sensing signal outgoing end. The optical waveguide sensor has the digital operating mode, features high sensitivity, good anti-noise property and high reliability, is easy to expand to realize regular arrays, is convenient to integrate with integrated spectrometer chips and is conductive to realizing integrated, miniaturized, portable and low-cost sensing system.

Description

technical field [0001] The invention relates to a digital integrated optical waveguide sensor based on cascaded microcavities, belonging to the field of optical sensing. Background technique [0002] In the fields of drug development, environmental monitoring, and food safety testing, reliable testing methods are indispensable, and sensing technology is its core technology. Using advanced sensing technology, qualitative or quantitative analysis can be performed on the composition / concentration of substances. Optical sensing is an important branch of sensing technology. Its basic principle is: when the measured substance interacts with the light field, it will cause changes in some parameters of the optical signal (such as intensity, wavelength, phase, polarization state, mode distribution, etc.). [0003] Among the many different forms of optical sensors, the integrated optical waveguide sensor is currently the most concerned type. Integrated optical waveguide sensors usua...

Claims

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Application Information

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IPC IPC(8): G01N21/41
Inventor 戴道锌
Owner ZHEJIANG UNIV
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