Optical and biochemical sensor in two-way parallel-channel annulet-nested Mach Zehnder structure

A biochemical sensor and parallel channel technology, applied in the field of photobiochemical sensing, can solve the problems of low efficiency and uncompact structure of biochemical sensor channels, and achieve the effects of being conducive to detection, large SNR, and high sensitivity
CN103499556BInactive Publication Date: 2015-07-15UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2015-07-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an optical and biochemical sensor in a two-way parallel-channel annulet-nested Mach Zehnder structure. The optical and biochemical sensor comprises the parallel-channel annulet-nested Mach Zehnder structure and a feedback waveguide loop, wherein the parallel-channel annulet-nested Mach Zehnder structure comprises an input straight waveguide, an output straight waveguide and an MZI (Mach Zehnder Interferometer) annulet resonant cavity nested with the Mach Zehnder structure. According to the optical and biochemical sensor, by utilizing the parallel-channel annulet-nested Mach Zehnder structure, the feedback waveguide loop, an input optical grating vertical coupler and an output optical grating vertical coupler, transmission spectra of a non-balanced Mach Zehnder structure and a two-way parallel-channel annulet resonant cavity are overlapped based on a vernier effect so as to obtain a sensing property spectrogram with high sensitivity, a wide detectable dynamic range and a large signal to noise ratio.
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Description

technical field

[0001] The invention belongs to the technical field of photobiochemical sensing, and in particular relates to the design of an photobiochemical sensor with a Mach-Zehnder structure embedded in a double-channel parallel channel microring. Background technique

[0002] With the maturity of photonics technology and its continuous expansion in the fields of biology and chemistry, the application range of optical biochemical sensors has covered many fields of biochemical sensors, and has become an important part of today's biochemical sensor devices. Biochemical sensors are not only widely used in traditional medical fields, but also in environmental monitoring, crop protection, and homeland security. An optical biochemical sensor is a detection device with high selectivity and high sensitivity to target detection substances, which uses a certain biochemical component as a sensitive element and an optical signal as a carrier. Biochemical sensors usually detect mi...

Claims

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