Design and Research on Low-loss Terahertz Fiber Device
Citation
刘 鑫 (Liu Xin). 低损耗太赫兹光纤器件的设计与研究 (Design and Research on Low-loss Terahertz Fiber Device) [硕士研究生学位论文 (Master's Thesis)]. 物理与通信电子学院 (College of Physics and Communication Electronics), 二○二○ 年 三月 (March 2020).
Keywords
- Terahertz (THz)
- Optical fiber
- Polarization splitter
- Low loss
- Asymmetric dual-core fiber
- Transmission loss
- Extinction ratio
- Bandwidth
- Coupling length
- Photonic crystal fiber (PCF)
- Terahertz devices
- Fiber coupler
- Mode coupling
- Effective refractive index
- Finite element method (FEM)
Brief
This dissertation explores the design and study of novel liquid-filled microstructured optical fiber devices for enhanced sensing applications in areas like temperature and electric field detection, leveraging strong light-material interactions within the fiber.
Summary
This research presents a new, simple, and short (1.27cm) terahertz polarization splitter based on an asymmetric dual-suspended-core fiber made of TOPAS polymer. It achieves low transmission loss (0.53-0.67dB), a -20dB extinction ratio, and a 0.046THz bandwidth, offering an advancement in THz fiber optic devices.
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