材料科学
太赫兹辐射
极化(电化学)
双折射
有限元法
保偏光纤
光学
纤维
光电子学
物理
复合材料
光纤传感器
化学
物理化学
热力学
作者
Natthawat Phanchat,Ratchapak Chitaree
出处
期刊:Engineering research express
[IOP Publishing]
日期:2022-08-01
卷期号:4 (3): 035018-035018
标识
DOI:10.1088/2631-8695/ac8336
摘要
Abstract A polarization-maintaining and polarization-filtering hollow core fiber with nested anti-resonant nodeless tubes for the THz regime is proposed. The model is designed by the finite element method to operate at 1.0 THz using TOPAS copolymer as the fiber material. The proposed structure consists of four outer tubes with one inner tube each in the orthogonal arrangement. The fiber was optimized to obtain the lowest loss by varying the tube thickness. The simulation results show that the thickness of 0.09 mm was suitable for a low loss of 0.2 dB m −1 operating at 1.0 THz. The fiber property of high birefringence @ 1.5 × 10 −4 was made by introducing unequal radial distances between the outer and inner tubes of the orthogonal arrangement. In addition, at a particular difference of the radial distance, it was found that the proposed fiber can act as a polarization filter indicating by having a high crosstalk.
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