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
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[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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