All-fiber second-order optical vortex generation based on strong modulated long-period grating in a four-mode fiber

Wu Hang; Gao Shecheng; Huang Bingsen; Feng Yuanhua; Huang Xincheng; Liu Weiping; Lui Zhaohui

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All-fiber second-order optical vortex generation based on strong modulated long-period grating in a four-mode fiber

机译：全纤维二阶光学涡流基于四模光纤中的强调制长周期光栅

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摘要

We propose an effective all-fiber method to generate a high-order optical vortex (OV) via twisting a strong modulated long-period fiber grating (LPFG) written in a four-mode fiber (4MF). With a special design and optimization of the procedures of CO2-laser irradiation, an LPFG with strong period deformation is achieved in the 4MF. Based on this LPFG, we can directly convert the linear polarization (LP) fiber fundamental mode (LP01) to the high-order LP core mode (LP21) with efficiency of 99.7% and then transform the LP21 mode into a high-order OV mode (+/- 2 order). This is the first time, to the best of our knowledge, that +/- 2-order OV modes have been experimentally generated with just one fiber grating in an allfiber-system. (C) 2017 Optical Society of America

机译：我们提出了一种有效的全纤维方法，通过扭转在四模光纤（4MF）中的强调制的长周期光纤光栅（LPFG）产生高阶光学涡流（OV）。通过特殊的设计和优化CO2激光照射的程序，在4MF中实现了具有强周期变形的LPFG。基于该LPFG，我们可以通过99.7％的效率直接将线性极化（LP）光纤基波模式（LP01）转换为高阶LP核心模式（LP21），然后将LP21模式转换为高阶OV模式（+/- 2阶）。这是据我们所知，这是第一次，+/- 2阶OV模式已经通过Allfiber系统中的一个光纤光栅进行了实验生成。（c）2017年光学学会

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来源
《Optics Letters》 |2017年第24期|共4页
作者
Wu Hang; Gao Shecheng; Huang Bingsen; Feng Yuanhua; Huang Xincheng; Liu Weiping; Lui Zhaohui;
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作者单位

Jinan Univ Inst Photon Technol Guangzhou 510632 Guangdong Peoples R China;

Jinan Univ Dept Elect Engn Guangzhou 510632 Guangdong Peoples R China;

Jinan Univ Dept Elect Engn Guangzhou 510632 Guangdong Peoples R China;

Jinan Univ Dept Elect Engn Guangzhou 510632 Guangdong Peoples R China;

Jinan Univ Dept Elect Engn Guangzhou 510632 Guangdong Peoples R China;

Jinan Univ Dept Elect Engn Guangzhou 510632 Guangdong Peoples R China;

Sun Yat Sen Univ State Key Lab Optoelect Mat &

Technol Guangzhou 510275 Guangdong Peoples R China;

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正文语种 eng
中图分类计量学;光学;
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1. All-fiber second-order optical vortex generation based on strong modulated long-period grating in a four-mode fiber [J] . Wu Hang, Gao Shecheng, Huang Bingsen, Optics Letters . 2017,第24期

机译：全纤维二阶光学涡流基于四模光纤中的强调制长周期光栅
2. Broad-Band Tunable All-Fiber Bandpass Filter Based on Hollow Optical Fiber and Long-Period Grating Pair [J] . S. Choi, T. J. Eom, Y. Jung, IEEE Photonics Technology Letters . 2005,第1期

机译：基于中空光纤和长周期光栅对的宽带可调谐全光纤带通滤波器
3. Generation of Cylindrical Vector Beams and Optical Vortex in a Solid-Core Ring Fiber Based on an Acoustically Induced Fiber Grating [J] . Zhang Wending, Li Xin, Zhang Lu, IEEE journal of selected topics in quantum electronics . 2020,第4期

机译：基于声学诱导的纤维光栅在固体环纤维中产生圆柱形矢量梁和光学涡流
4. Measurement of second-order dispersion fluctuation of fiber grating based on optical phase modulator [C] . Zhu Yuxuan, Chen Qian, Gui Lin, Conference on Optics Frontiers Online : Optical Communications and Networks . 2020

机译：基于光学相位调制器的光纤光栅二阶色散波动的测量
5. Novel fabrication technique for long-period gratings in optical fibers and filter applications [D] . Skorucak, Anton 1999

机译：光纤和滤波器应用中长周期光栅的新型制造技术
6. High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings [O] . Ruth I. Mata-Chávez, Alejandro Martínez-Rios, Julián M. Estudillo-Ayala, 2013

机译：基于紧凑型加长周期光纤光栅的高温光纤传感器
7. Low Refractive-Index and Temperature Sensitive Torsion Sensor Based on Cascaded Long-Period Fiber Gratings Inscribed in a Four-Mode Fiber [O] . Jie Dong, Mei Sang, Shuang Wang, 2020

机译：基于级联的长周期光纤光栅的低折射率和温度敏感扭转传感器铭刻在四模光纤中
8. Novel Fabrication of Ultra-Strong Thermally Stable Gratings through the Coating of Optical Fibers with UV Light.(STTR Phase II) [R] . Starodubov, D. , Feinberg, J. 2001

机译：通过紫外光涂覆光纤新型制造超强热稳定光栅（sTTR phase II）

All-fiber second-order optical vortex generation based on strong modulated long-period grating in a four-mode fiber

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