研究目的
Exploring the theoretical possibility of achieving light amplification in an unfilled hollow core antiresonant fiber by proposing a novel geometrical structure that combines resonant and anti-resonant elements within the cladding area.
研究成果
The novel design for anti-resonant hollow core optical fibers, incorporating both resonant and anti-resonant cladding elements, demonstrates the potential for achieving light amplification without gas filling. The design allows for an increased overlap of the fundamental optical mode on the glass cladding region while maintaining low optical attenuation, suggesting a viable path toward the realization of ARF optical amplifiers.
研究不足
The study is theoretical and relies on numerical simulations. Practical realization and experimental validation of the proposed fiber design are not addressed. The performance under extreme bending conditions and the scalability of the manufacturing process are potential areas for further investigation.
1：Experimental Design and Method Selection:
The study proposes a novel design for anti-resonant hollow core optical fibers that includes both resonant and anti-resonant cladding elements. Numerical simulations using Comsol Multiphysics are performed to analyze the fiber's properties.
2：Sample Selection and Data Sources:
The design involves a hollow core fiber with two rings of cladding tubes surrounding a central air core. The inner ring is composed of Thulium (Tm)-doped silica tubes, and the outer ring is composed of undoped silica tubes.
3：List of Experimental Equipment and Materials:
Comsol Multiphysics for numerical simulations, Sellmeier equations for the calculation of the glass refractive index.
4：Experimental Procedures and Operational Workflow:
The study involves designing the fiber structure, performing numerical simulations to analyze attenuation, overlap, and bending effects at pump and signal wavelengths.
5：Data Analysis Methods:
The analysis includes monitoring the effective index of the transmitted mode, calculating the fraction of Power On Glass (POG), and assessing confinement losses.
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