研究目的
Investigating the use of an analytical description to perform simulations of a specific type of sensors through a simple model developed based, calibrated and validated on the experimentally demonstrated case of a Mach-Zehnder multi-parameter interferometric sensor with 120 mm length.
研究成果
The study presents a simple analytical model that accurately describes the behavior of an all-fiber optic interferometric sensor for liquid level, temperature, and refractive index sensing. The model allows for deeper understanding and prediction of sensor functioning without the need for more complex modal analysis. This understanding can be applied to project similar sensors of other lengths and for other applications.
研究不足
The analytical model is based on a simplified approach considering only one average cladding mode, which may not account for all factors affecting sensor sensitivity, especially for sensors of different lengths.
1：Experimental Design and Method Selection:
The study uses an analytical model to simulate the behavior of a Mach-Zehnder fiber optic interferometric sensor. The model is based on the sum of two electric fields representing light beams in the core and cladding of the fiber.
2：Sample Selection and Data Sources:
The model was calibrated and compared with experimental data from a 120 mm sensor for measurements of temperature, refractive index, and water level.
3：List of Experimental Equipment and Materials:
A standard telecom fiber (STF) with 10 μm diameter and a 12 cm single mode fiber with 6 μm diameter (Raman OFS) were used.
4：Experimental Procedures and Operational Workflow:
The study involved varying the cladding effective refractive index to simulate changes in external medium parameters and analyzing the resulting spectral shifts.
5：Data Analysis Methods:
The analysis focused on the shift in wavelength of peaks and valleys in the spectrum to determine the effects of external parameter variations on the cladding effective refractive index.
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