Mode selective coupler for optical vortices generation(Invited Paper)

• 作 者: 张晓强 陈瑞山 周勇 明海 王安廷
• 机 构: Department of Optics and Optical Engineering, University of Science and Technology of China,
• 出 处: Chinese Optics Letters
• 发表日期: 2017年03期
• 关键词: topological coupler charges simply normalized cladding matched matching overlap

In this Letter,an effective method using a mode selective coupler(MSC),which is composed of a three-core fiber is presented to generate optical vortices(OVs).The conversions of OVs with different topological charges,0→±1 and 0→±3,are simulated in detail.We also prove that a higher-order topological charge can be obtained simply by changing the parameters of the fiber to increase the number of modes in the fiber.The polarization of OVs can be controlled as well.

In this Letter, an effective method using a mode selective coupler (MSC), which is composed of a three-core fiber is presented to generate optical vices (OVs). The conversions of OVs with different topological charges, 0 → ± 1 and 0 → ± 3, are simulated in detail. We also prove that a higher-order topological charge can be obtained simply by changing the parameters of the fiber to increase the number of modes in the fiber. Polarization of OVs can be controlled as well.