研究目的
Investigating the transverse-load characteristics of long period fiber gratings (LPFGs) fabricated by femtosecond laser pulses.
研究成果
The transverse-load characteristics of LPFGs written by femtosecond laser are dependent on the direction of the applied transverse load for resonant wavelength shifts but independent for peak transmission attenuation. These characteristics can be utilized in optical fiber sensors.
研究不足
The study is limited to LPFGs fabricated by femtosecond laser pulses and does not compare with LPFGs fabricated by other methods. The effects of environmental factors such as temperature and humidity are not considered.
1：Experimental Design and Method Selection:
The study involves fabricating LPFGs using an 800 nm femtosecond laser and investigating their response to transverse loads applied in different directions.
2：Sample Selection and Data Sources:
LPFGs are fabricated in a bare standard communication fiber (Corning SMF-28).
3：8). List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: An amplified 800 nm femtosecond laser (Spectra Physics, Inc.), a broad light source (NKT), and an optical spectrum analyzer (OSA, Agilent 86142B).
4：Experimental Procedures and Operational Workflow:
The LPFGs are subjected to transverse loads from different directions, and the changes in resonant wavelength and transmission attenuation are recorded.
5：Data Analysis Methods:
The data is analyzed to determine the sensitivity of the LPFGs to transverse loads in different directions.
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