研究目的
Investigating the bending characteristic and improvement of fusion splice between the photonic crystal fiber (PCF) and the single mode fiber (SMF) for fiber optic gyroscope (FOG) applications.
研究成果
The study successfully improves the bending characteristic of the splice between PCF and SMF by identifying stress concentration as the main cause of poor bending performance and implementing a fiber tapering method. The improved splice method has been successfully applied in FOG for space applications, demonstrating its reliability and effectiveness.
研究不足
The study is limited to specific types of PCF and SMF. The tapering process parameters need further optimization to minimize splice loss and ensure consistent results.
1：Experimental Design and Method Selection:
The study involves analyzing the bending characteristic of the splice between PCF and SMF using 3D X-Ray imaging to observe the internal structure and stress concentration. A fiber tapering method is proposed to improve the bending characteristic.
2：Sample Selection and Data Sources:
Polarization-maintaining PCF and panda type polarization-maintaining SMF are used. The fibers are spliced together using a filament fusion splicer with optimized parameters.
3：List of Experimental Equipment and Materials:
ZEISS Xradia 520 Versa 3D X-ray microscope (XRM) for 3D imaging, filament fusion splicer for splicing, and plastic rods for bending radius tests.
4：Experimental Procedures and Operational Workflow:
The process includes tapering the PCF, splicing it with SMF, and testing the bending radius by winding the spliced fiber around plastic rods of varying diameters.
5：Data Analysis Methods:
The tensile stress of the splice in bending state is analyzed based on 3D imaging results. The bending radius is calculated from the tensile strength and cladding diameter of the fiber.
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