Design and numerical analysis of a THz square porous-core photonic crystal fiber for low flattened dispersion, ultrahigh birefringence

Luo Jianfeng; Tian Fengjun; Qu Hongkun; Li Li; Zhang Jianzhong; Yang Xinhua; Yuan Libo

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Design and numerical analysis of a THz square porous-core photonic crystal fiber for low flattened dispersion, ultrahigh birefringence

机译：低扁平分散，超高双折射的THz方圆芯光子晶体光纤的设计与数值分析

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We propose a kind of square porous-core photonic crystal fiber (PCF) for polarization-maintaining terahertz (THz) wave guidance. An asymmetry is introduced by implementing rectangular array air holes in the porous core of the PCF, and ultrahigh birefringence and low effective material loss (EML) can be achieved simultaneously. The properties of THz wave propagation are analyzed numerically in detail. The numerical results indicate that the proposed fiber offers a high birefringence of 0.063 and a low EML of 0.081 cm(-1) at 1 THz. Moreover, a very low flattened dispersion profile is observed over a wide frequency domain of 0.85-1.9 THz. The zero flattened dispersion can be controlled. It is predicted that this PCF would be used potentially in polarization maintaining and dispersion management of THz waves. (C) 2017 Optical Society of America

机译：我们提出了一种方形多孔芯光子晶体纤维（PCF），用于维持太赫兹（Thz）波导。通过在PCF的多孔芯中实施矩形阵列气孔来引入不对称性，并且可以同时实现超高的双折射和低有效材料损失（EML）。详细分析了THz波传播的特性。数值结果表明，所提出的纤维在1至THz的低于0.063和0.081厘米（-1）的低EML的高双折射。此外，在0.85-1.9 thz的宽频域中观察到非常低的扁平分散曲线。可以控制零扁平的分散体。预测，该PCF可能是潜在地用于THz波的偏振保持和分散管理。（c）2017年光学学会

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《Applied optics》 |2017年第24期|共9页
作者
Luo Jianfeng; Tian Fengjun; Qu Hongkun; Li Li; Zhang Jianzhong; Yang Xinhua; Yuan Libo;
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Harbin Engn Univ Minist Educ Key Lab In Fiber Integrated Opt Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Minist Educ Key Lab In Fiber Integrated Opt Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Minist Educ Key Lab In Fiber Integrated Opt Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Minist Educ Key Lab In Fiber Integrated Opt Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Minist Educ Key Lab In Fiber Integrated Opt Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Minist Educ Key Lab In Fiber Integrated Opt Harbin 150001 Heilongjiang Peoples R China;

Guilin Univ Elect Technol Photon Res Ctr Guilin 541004 Peoples R China;

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Design and numerical analysis of a THz square porous-core photonic crystal fiber for low flattened dispersion, ultrahigh birefringence

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