Design of fusion cone type fiber coupler based on few-mode fiber
Citation
廉玉东, 虞洋, 靳鹏, 杜奋娇, 王雨雷, 吕志伟. (2023-03-30). 基于少模光纤的熔锥型光纤耦合器的设计 [Design of fusion cone type fiber coupler based on few-mode fiber] [J/OL]. 红外与激光工程. Retrieved from https://kns.cnki.net/kcms/detail/12.1261.TN.20230330.0901.002.html
Keywords
- Orbital Angular Momentum (OAM)
- Fiber Coupler
- Few-mode Fiber
- Single-mode Fiber (SMF)
- Six-mode Fiber (Six-MF)
- Fused Taper Pulling Method (熔融拉锥法)
- Mode Coupling Theory (耦合模理论)
- Numerical Simulation (数值模拟)
- Mode Conversion
- Coupling Efficiency
- Insertion Loss
- Beam Propagation Method (BPM)
- Phase Matching
Brief
This article details the design, simulation, fabrication, and testing of a fused-tapered few-mode fiber coupler, specifically an SMF-Six-MF coupler, to efficiently generate first-order orbital angular momentum (OAM) modes for applications in optical communication and fiber lasers.
Summary
This article presents the design, simulation, and experimental testing of fused-tapered fiber couplers made from single-mode fiber (SMF) and six-mode fiber (Six-MF) to generate orbital angular momentum (OAM) modes. The authors designed three types of couplers (LP0,1-LP1,1, LP0,1-LP2,1, and LP0,1-LP3,1) through numerical simulation based on coupled mode theory and beam propagation method, achieving over 99% coupling efficiency in simulations. They then fabricated and tested an LP0,1-LP1,1 coupler using the fused taper pulling method, achieving OAM mode generation with a measured coupling efficiency of 61.38%, insertion loss of 2.12 dB, and a splitting ratio of 88.56% at a wavelength of 1550 nm. This work demonstrates a feasible method for generating OAM modes in optical fibers for applications in optical communication and fiber lasers.
Origin: https://kns.cnki.net/kcms/detail/12.1261.TN.20230330.0901.002.html