Low-loss, single-polarization, anti-bending, anti-resonant fiber applicable to the small flexibility field.

IF 3.2 2区 物理与天体物理 Q2 OPTICS Optics express Pub Date : 2024-11-04 DOI:10.1364/OE.540148
Jingkai Zhou, Feng Wang, Yuejiang Song, Mi Li, Peng Mao, Qiang Chen
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Abstract

In this paper, a novel hollow-core anti-resonant optical fiber is proposed. We confirm that the U-shaped nested tubes can better compress the fiber core compared with the circular and semi-circular nested tubes to further reduce the loss and improve the single polarization characteristics. The proposed optical fiber has an ultra-low loss of 0.005 dB/m in the considered wavelength range. This is difficult to achieve in most of the previous studies. In the common wavelength band of 1550 nm, the designed fiber achieves a birefringence of about 3 × 10-5 and a single polarization PER index of 2259 and is capable of polarization filtering with a broadband of 16 nm. Meanwhile, the proposed structure still has extremely excellent bending resistance. The critical bending radius of the designed structure is approximately 0.4 cm. It also confirms that our proposed structure has a certain ability to withstand harsh environments and can be widely applied in small, flexible fields. We believe that the designed structure has a wider range of applications in the field of fiber optic communication systems that are more sensitive to polarization, such as fiber optic gyroscopes, optical amplifiers, and fiber lasers.

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适用于小柔性领域的低损耗、单极化、抗弯曲、抗谐振光纤。
本文提出了一种新型空芯抗谐振光纤。我们证实,与圆形和半圆形嵌套管相比,U 形嵌套管能更好地压缩纤芯,从而进一步降低损耗并改善单偏振特性。在所考虑的波长范围内,所提出的光纤具有 0.005 dB/m 的超低损耗。这是以往大多数研究难以达到的。在 1550 nm 的常用波段,所设计的光纤实现了约 3 × 10-5 的双折射和 2259 的单偏振 PER 指数,并能实现 16 nm 宽带的偏振滤波。同时,所提出的结构还具有极其出色的抗弯曲性。设计结构的临界弯曲半径约为 0.4 厘米。这也证实了我们提出的结构具有一定的抗恶劣环境能力,可以广泛应用于小型、灵活的领域。我们相信,在光纤陀螺仪、光放大器和光纤激光器等对偏振较为敏感的光纤通信系统领域,所设计的结构具有更广泛的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Optics express
Optics express 物理-光学
CiteScore
6.60
自引率
15.80%
发文量
5182
审稿时长
2.1 months
期刊介绍: Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.
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