Single-polarization hollow-core anti-resonant fiber with ultra-high polarization loss ratio and low loss in the terahertz range

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-06-18 DOI:10.1016/j.yofte.2025.104313

Qiang Liu , Xiaotian Yao , Jian Han , Guangrong Sun , Zihao Lan , Peiqing Xing , Jingwei Lv , Paul K. Chu , Chao Liu

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Abstract

A single-polarization hollow-core anti-resonant fiber (HC-ARF) with an asymmetric cladding and double-layer nested elliptical tube is designed and analyzed. Along the X-axis, the outer elliptic tube with gradually varying wall thickness and the inner elliptic tube with a uniform wall thickness enhance the loss of the X-polarized fundamental mode (FM). In the Y-axis direction, the double-layer elliptic tube with a uniform wall thickness suppresses the loss of Y-polarized FM to improve the polarization loss ratio (PLR). Theoretical analysis reveals that the losses of X-polarized FM and Y-polarized FM at 1 THz are 9.07 dB/m and 2.59 × 10⁻⁵ dB/m, respectively, and PLR is 349,318 and greater than 100 between 0.98 and 1.02 THz. The HC-ARF with properties better than similar filters reported recently is a new design for high-performance terahertz-band single-polarization fibers with great application potential.

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超高极化损耗比、太赫兹范围内低损耗的单极化空心芯抗谐振光纤

设计并分析了非对称包层双层嵌套椭圆管单极化空心芯抗谐振光纤（HC-ARF）。沿x轴方向，壁厚逐渐变化的外椭圆管和壁厚均匀的内椭圆管增加了x偏振基模的损耗。在y轴方向上，壁厚均匀的双层椭圆管抑制了y极化调频的损耗，提高了偏振损耗比（PLR）。理论分析表明，在1太赫兹处，x极化调频和y极化调频的损耗分别为9.07 dB/m和2.59 × 10−5 dB/m，在0.98 ~ 1.02太赫兹之间，PLR分别为349,318和大于100。HC-ARF的性能优于近年来报道的同类滤波器，是一种高性能太赫兹单偏振光纤的新设计，具有很大的应用潜力。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.