Helical Long-Period Fiber Grating-Based Band- Selectable and Bandwidth-Enhanced Flat-Top Filter and Its Application to Wideband OAM Mode Converter

IF 2.2 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Quantum Electronics Pub Date : 2024-06-05 DOI:10.1109/JQE.2024.3410234

Zhang Meng;Naruya Mochizuki;Shiryu Oiwa;Hua Zhao;Peng Wang;Hongpu Li

引用次数: 0

Abstract

A band-selectable and bandwidth-enhanced flat-top rejection filter is proposed and demonstrated both theoretically and experimentally, which is realized by using single-mode fiber (SMF)-based helical long-period fiber gratings (HLPGs) precisely operated at dispersion turning points (DTPs) of the same azimuthal order cladding mode but with different radial indices. As an important application of such HLPGs, the orbital angular momentum (OAM) mode converters enabling to have either a flat-top bandwidth of ~116 nm@-16 dB but centered at wavelength of ~1530 nm, or a flat-top bandwidth ~130 nm @-16 dB but centered at wavelength of ~1650 nm, have been successfully demonstrated. This is the first report for the experimental demonstration of such high-performance band-rejection filters with bands fully matching the C-L bands of the fiber communication. The proposed HLPGs may find potential applications to OAM mode converters, OAM tweezers, and OAM sensors.

查看原文本刊更多论文

基于螺旋长周期光纤光栅的带可选和带宽增强型平顶滤波器及其在宽带 OAM 模式转换器中的应用

通过使用基于单模光纤（SMF）的螺旋长周期光纤光栅（HLPG），在相同方位阶包层模式但具有不同径向指数的色散转折点（DTP）上精确操作，提出并在理论和实验上演示了一种带可选择且带宽增强的平顶抑制滤波器。作为此类长波光栅的一项重要应用，轨道角动量（OAM）模式转换器已得到成功验证，该转换器的平顶带宽为 ~116 nm@-16 dB，但以 ~1530 nm 波长为中心；或平顶带宽为 ~130 nm@-16 dB，但以 ~1650 nm 波长为中心。这是首次报告此类高性能带阻滤波器的实验演示，其波段与光纤通信的 C-L 波段完全匹配。所提出的 HLPG 有可能应用于 OAM 模式转换器、OAM 镊子和 OAM 传感器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Journal of Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.70

自引率

4.00%

发文量

审稿时长

3.0 months

期刊介绍： The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics. The Journal comprises original contributions, both regular papers and letters, describing significant advances in the understanding of quantum electronics phenomena or the demonstration of new devices, systems, or applications. Manuscripts reporting new developments in systems and applications must emphasize quantum electronics principles or devices. The scope of JQE encompasses the generation, propagation, detection, and application of coherent electromagnetic radiation having wavelengths below one millimeter (i.e., in the submillimeter, infrared, visible, ultraviolet, etc., regions). Whether the focus of a manuscript is a quantum-electronic device or phenomenon, the critical factor in the editorial review of a manuscript is the potential impact of the results presented on continuing research in the field or on advancing the technological base of quantum electronics.