Design of negative curvature fiber carrying multiorbital angular momentum modes for terahertz wave transmission

Results in Physics

Xiangjun Li¹  Dexian Yan¹  Guohua Qiu²  Jining Li³  Mingxuan Cao⁴  Miao Meng⁴ 

[1] Centre for THz Research China Jiliang University Hangzhou 310018 Zhejiang China;Corresponding author at: Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province College of Information Engineering China Jiliang University Hangzhou 310018 Zhejiang China.;Faculty of Intelligent Manufacturing Wuyi University Jiangmen 529020 Guangdong China;Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province College of Information Engineering China Jiliang University Hangzhou 310018 Zhejiang China;

关键词: Orbital angular momentum (OAM);    Terahertz (THz) communication;    Negative curvature fiber;   

DOI  :  

来源: DOAJ

【 摘 要 】

We design a novel negative curvature fiber (NCF) to support terahertz orbital angular momentum (OAM) modes. Numerical models are constructed to evaluate the transmission performances of vector modes in the frequency range of 0.40–0.80 THz. The designed fiber made from only one kind of heat-resistance resin (HTL) material can support 50–52 OAM modes with large effective index differences above 10−4 and low confinement loss (in the level of 10−15 dB/cm). Some other significant characteristics of the designed NCF including waveguide dispersion, OAM purity, and effective mode field area (Aeff), are also calculated and analyzed with their effects and applications on terahertz OAM guidance. The optimized absolute value of dispersion is between 0.33 and 0.8 ps/(THz × cm) in the range of 0.45–0.75 THz. The high mode purity (85%−95%) in the range of 0.60–0.80 THz further promotes the mode division multiplexing in OAM fiber. The proposed NCF can offer great potential in high-capacity terahertz communication based on OAM multiplexing.

【 授权许可】

Unknown