研究目的
To enhance temperature sensitivity by Vernier-effect using a parallel double Fabry–Perot interferometers configuration based on suspended-core microstructured optical fiber.
研究成果
The parallel double-FPIs configuration based on Vernier-effect demonstrates an enhanced temperature sensitivity of 153.8 pm/oC with an amplification factor of 14.6, showing good reversibility and stability for temperature sensing applications.
研究不足
The small deviations at several temperature points during heating and cooling processes may be caused by small temperature fluctuations of the temperature furnace and inaccurate wavelength dips of the envelope.
1：Experimental Design and Method Selection:
The experiment involves constructing two FPIs using SCMF and connecting them via a 3-dB coupler to form a parallel structure for temperature sensing.
2：Sample Selection and Data Sources:
Commercial SCMF is used, with specific dimensions and properties detailed.
3：List of Experimental Equipment and Materials:
Includes a broadband source, 3-dB coupler, optical spectrum analyzer, and a controllable temperature furnace.
4：Experimental Procedures and Operational Workflow:
The FPI-2 is placed in a temperature-changing environment, while FPI-1 is kept at a constant temperature. The system is heated and cooled to observe wavelength shifts.
5：Data Analysis Methods:
The wavelength shifts of fine interference fringe and envelope are plotted versus temperature variation to determine sensitivity.
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