Fast fiber mode decomposition with a lensless fiber-point-diffraction interferometer

Li Junbo; Zhang Xiaoyu; Zheng Yunhan; Li Fangxin; Shan Xiaoqin; Han Zhigang; Zhu Rihong

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Fast fiber mode decomposition with a lensless fiber-point-diffraction interferometer

机译：快速纤维模式分解，无透镜光纤点 - 衍射干涉仪

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Recently, the growing interest in few-mode fibers in telecommunications and high-power lasers has stimulated the demand for fiber mode decomposition (MD). Here we present a fast fiber MD method with a lensless fiber-point-diffraction interferometer. The complex amplitude at the fiber end is achieved by the polarization phase-shifting technique and the lensless imaging technique. Then, the eigenmode coefficients are determined by the mode orthogonal operations of the complex amplitude. In the experiment, the SMF-28e fiber containing 10 linear polarized modes at the wavelength of 632.8 nm is studied for MD. The decomposition of the 50 * 50 pixels interferograms takes only 0.0168 s. The similarity of the intensity patterns of the testing light is larger than 97% before and after the MD. This new, to the best of our knowledge, method can achieve fast and accurate 10-mode MD without using any imaging systems. (C) 2021 Optical Society of America

机译：近年来，人们对电信和高功率激光器中的少模光纤越来越感兴趣，这刺激了对光纤模式分解（MD）的需求。本文提出了一种基于无透镜光纤点衍射干涉仪的快速光纤MD方法。光纤端的复振幅是通过偏振相移技术和无透镜成像技术实现的。然后，通过复振幅的模式正交运算确定特征模式系数。在实验中，研究了波长为632.8 nm的含有10个线偏振模式的SMF-28e光纤的MD。50*50像素干涉图的分解只需0.0168 s。MD前后测试光强度模式的相似性大于97%。据我们所知，这一新的，该方法可以在不使用任何成像系统的情况下实现快速准确的10模MD。（2021）美国光学学会

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来源
《Optics Letters》 |2021年第10期|共4页
作者
Li Junbo; Zhang Xiaoyu; Zheng Yunhan; Li Fangxin; Shan Xiaoqin; Han Zhigang; Zhu Rihong;
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作者单位

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Peoples R China;

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Peoples R China;

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Peoples R China;

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Peoples R China;

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Peoples R China;

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Peoples R China;

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 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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2. Mach-Zehnder Interferometer for High Temperature(1000°C)Sensing Based on a Few-Mode Fiber [J] . Juan Liu, Chaowei Luo, Hua Yang, 光子传感器：英文版 . 2021,第003期
3. Mach-Zehnder Interferometer for High Temperature(1000°C)Sensing Based on a Few-Mode Fiber [J] . Juan LIU, Chaowei LUO, Hua YANG, 光子传感器（英文版） . 2021,第003期
4. Fast fiber mode decomposition with a lensless fiber-point-diffraction interferometer (vol 46, pg 2501, 2021) [J] . Li Junbo, Zhang Xiaoyu, Zheng Yunhan, Optics Letters . 2021,第12期

机译：快速光纤模式分解，无透镜光纤点 - 衍射干涉仪（VOL 46，PG 2501,2021）
5. Fast mode decomposition in few-mode fibers [J] . Egor S. Manuylovich, Vladislav V. Dvoyrin, Sergei K. Turitsyn Nature Communications . 2020,第1期

机译：少量模式纤维中快速模式分解
6. Stable Multi-Wavelength Thulium-Doped Fiber Laser With Two Cascaded Single-Mode-Four-Mode-Single-Mode Fiber Interferometers [J] . Ying Guo, Fengping Yan, Ting Feng, Quality Control, Transactions . 2021,第1期

机译：具有两个级联单模四模式单模光纤干涉仪的稳定的多波长掺杂光纤激光器
7. Accurate, robust, and fast mode decomposition for few-mode optical fiber with deep neural network [C] . Yi An, Liangjin Huang, Jun Li, International Conference on Optical Communications and Networks . 2019

机译：具有深度神经网络的少量光纤的精确，坚固，快速模式分解
8. SINGLE-MODE OPTICAL-FIBER RESONATOR AND APPLICATIONS TO SENSING (FIBER SENSOR, FIBER LASER, FIBER GYROSCOPE). [D] . STOKES, LOREN FRANK. 1984

机译：单模光纤谐振器及其在传感中的应用（光纤传感器，光纤激光，光纤陀螺仪）。
9. Guided-Mode-Leaky-Mode-Guided-Mode Fiber Interferometer and Its High Sensitivity Refractive Index Sensing Technology [O] . Qi Wang, Chunyue Li, Chengwu Zhao, 2016

机译：导模泄漏模导模光纤干涉仪及其高灵敏度折射率传感技术
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11. Single mode fiber array for planet detection using a visible nulling interferometer [R] . Liu, Duncan, Levine, B. Martin, Shao, Michael, 2005

机译：单模光纤阵列，用于使用可见零点干涉仪进行行星检测

Fast fiber mode decomposition with a lensless fiber-point-diffraction interferometer

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