研究目的
To design a high-sensitivity refractive index (RI) sensor with a wide tunable detection range based on the dual-core resonance of photonic crystal fibers for applications in biochemical, chemistry, and environmental detection.
研究成果
The designed refractive index sensor based on dual-core resonance in gold-coated photonic crystal fibers offers high sensitivity and a tunable detection range, making it suitable for a wide range of applications. The sensor's performance can be optimized by adjusting structural parameters, such as the diameter of the analyte channel and the thickness of the gold film, to meet specific measurement requirements.
研究不足
The study is based on numerical simulations, and practical implementation may face challenges related to the fabrication of the photonic crystal fiber with precise structural parameters and the uniform coating of gold film on the inner walls of the air holes.
1：Experimental Design and Method Selection:
The study employs the finite element method to simulate the complex transmission characteristics of the guided modes in the designed photonic crystal fiber (PCF) for RI sensing. A cladding air hole coated with gold film is designed as the microfluidic channel for surface plasmon resonance (SPR) sensing.
2：Sample Selection and Data Sources:
The sensor's performance is analyzed through numerical simulations, focusing on the interaction between the fiber core and a defective core formed by a gold-coated cladding air hole filled with liquid analyte.
3：List of Experimental Equipment and Materials:
The study involves the use of photonic crystal fibers with specific structural parameters, gold film for coating, and liquid analytes with varying refractive indices.
4：Experimental Procedures and Operational Workflow:
The study involves simulating the sensor's response to changes in the refractive index of the liquid analyte, adjusting structural parameters such as the diameter of the analyte channel and the thickness of the gold film to optimize performance.
5：Data Analysis Methods:
The confinement loss of the guided modes is calculated to determine the sensor's sensitivity and detection range. The relationship between resonance wavelength and refractive index is analyzed to evaluate performance.
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