研究目的
To demonstrate a Vernier microring sensor with high sensitivity and large measurement range for detecting different concentrations of aqueous solutions of ethylene glycol.
研究成果
The proposed Vernier microring sensor achieves a high sensitivity of 7386 nm/RIU and a large measurement range of 2.49 × 10?2 RIU, significantly outperforming traditional cascaded dual microring sensors. This system has potential applications in optical switching, biosensing, and environmental monitoring.
研究不足
The study is based on numerical simulations and does not include experimental validation. The practical implementation may face challenges related to fabrication precision and environmental stability.
1：Experimental Design and Method Selection:
The study involves the design of a Vernier microring sensor consisting of cascaded dual microring resonators and a measurement range unit. The performance is simulated using the transfer matrix method.
2：Sample Selection and Data Sources:
The sensor's performance is simulated for different concentrations of aqueous solutions of ethylene glycol (C2H6O2).
3：2).
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The device is fabricated on silicon on insulator (SOI) wafer with a top Si layer and a buried SiO2 layer. The simulation uses MODE solutions software for eigensolver analysis.
4：Experimental Procedures and Operational Workflow:
The transmission spectrum of the microring resonant system is measured when immersed in ethylene glycol solution with different concentrations. The coupling strength between microrings is optimized for sensing performance.
5：Data Analysis Methods:
The sensitivity and measurement range are calculated based on the wavelength shift and refractive index change.
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