研究目的
Investigating the design and simulation of etched physical structure fiber Bragg grating for fabricating high temperature sensors.
研究成果
The SP-EFBG structure can be fabricated by using ordinary SMF instead of elliptical core PMF, reducing the cost and solving the access problem of sensor. The simulation results meet the preset requirements for peak reflectivity, bandwidth, and center wavelength.
研究不足
The study is based on simulation results and may require experimental validation. The fabrication process and high-temperature annealing are complex.
1：Experimental Design and Method Selection:
The study uses COMSOL and Rsoft software for simulation to analyze the electric field continuity and optimize the structural model of SP-EFBG.
2：Sample Selection and Data Sources:
Common SMF is used instead of elliptical core polarization maintaining fibre (PMF).
3：List of Experimental Equipment and Materials:
COMSOL and Rsoft software are used for simulation.
4：Experimental Procedures and Operational Workflow:
The thickness of the remaining coating is determined by analyzing the continuity of the electric field at the air-coating interface. The SP-EFBG model is constructed and simulated.
5：Data Analysis Methods:
The reflection spectrum of the grating is analyzed to meet preset requirements.
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