Tunable Orbital Angular Momentum Generation Using All-Fiber Fused Coupler
| Autor: | Shuzhi Yao, Ya Shen, Youchao Jiang, Shuisheng Jian, Bofeng Zhu, Guobin Ren |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Angular momentum business.industry Single-mode optical fiber 02 engineering and technology Polarizer 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Optics law 0103 physical sciences Angular momentum of light Orbital angular momentum multiplexing Orbital angular momentum of light Electrical and Electronic Engineering Atomic physics 0210 nano-technology business Topological quantum number Beam (structure) |
| Zdroj: | IEEE Photonics Technology Letters. 30:99-102 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2017.2776981 |
| Popis: | We propose an effective approach to generate tunable orbital angular momentum (OAM) beam based on all-fiber fused coupler consisting of a single mode fiber (SMF) and a two-mode fiber. The fundamental mode in the SMF is directly coupled to the LP11 mode group (TE0,1, $\text {HE}^{\text {even,odd}}_{2,1}$ , TM0,1) by appropriately phase matching the modes in the fiber coupler. The experimental results demonstrate that the OAM beam is produced by combining $\text {HE}^{\text {even}}_{2,1}$ and TE0,1 (or $\text{HE}^{\text {odd}}_{2,1}$ and TM0,1) with a $\pi $ /2 phase shift and the OAM topological charge could be tuned from $l = -1$ to $l =+1$ by adjusting a polarizer set at the output end of fiber. |
| Databáze: | OpenAIRE |
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