Generation of orbital angular momentum light based on mechanically induced long-period fiber gratings using 3D printing technique

Liang Y.; Zhang H.; Yang M.Lin W.Liu B.Liu H.

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Generation of orbital angular momentum light based on mechanically induced long-period fiber gratings using 3D printing technique

机译：Generation of orbital angular momentum light based on mechanically induced long-period fiber gratings using 3D printing technique

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? 2022 Elsevier Inc.We propose and experimentally demonstrate an orbital angular momentum (OAM) beam generation method based on mechanically induced few-mode fiber gratings fabricated using 3D printing technique. Experimental results indicate that the transmission depth at resonance wavelength of few-mode fiber gratings with axially uniform refractive index could be adjusted when different lateral pressures are applied onto the few-mode fibers, and hence mode coupling efficiency between the fundamental core mode and LP11 mode could be controlled in this way. In addition, by changing the inclination angle of the few-mode fibers with respect to direction perpendicular to the mask grooves, the resonance wavelength of the few-mode grating could be changed as well. Besides uniform fiber gratings, we have also investigated the spectral broadening property of the few-mode cascaded fiber grating, and a 10-dB spectral bandwidth up to 114 nm is obtained experimentally. Our proposed OAM light generation method based on mechanically induced fiber gratings using 3D printing technique possesses several desirable merits such as low cost, ease of operation, flexibility in grating structure and no damage to fiber medium, which is anticipated to provide low lost and flexible solution to generation of broadband OAM light for future OAM-based communication systems.

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《Optical fiber technology》 |2022年第9期|1.1-1.6|共6页
作者
Liang Y.; Zhang H.; Yang M.Lin W.Liu B.Liu H.;
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作者单位

Institute of Modern Optics Nankai University||Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology;

Institute of Modern Optics Nankai University||Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology||Southern Marine Science and Engineering Guangdong Laboratory;

Institute of Modern Optics Nankai University||Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology||Southern Marine Science and Engineering Guangdong LaboratoryInstitute of Modern Optics Nankai UniversityInstitute of Modern Optics Nankai University||Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology||;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
3D printing; Few-mode fibers; Mechanically induced fiber grating; Mode coupling; Orbital angular momentum (OAM);

Generation of orbital angular momentum light based on mechanically induced long-period fiber gratings using 3D printing technique

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