All-dielectric metasurface lens based on multimode fiber

作者：Huang, Peng; Wang, Mingjie; Zhang, Xingyu; Guan, Chunying^*

来源：Conference on Optoelectronic Devices and Integration VII, 2018-10-11 To 2018-10-13.

DOI：10.1117/12.2502252

• Fiber-based lens
• Multimode fiber
• Phase control

A compact all-dielectric metasurface lens based on a conventional multimode fiber is proposed and demonstrated. Here, an aperiodic array of rectangular dielectric nanoresonators deposited on the end face of a multimode fiber was used to construct an all-dielectric metasurface lens. By varying the widths of rectangular resonators full 2 pi phase control was realized. The dielectric resonators were used as phase shift elements to achieve the required phase accumulation through propagation over a subwavelength distance and modulate the phase distribution of the emitted light from the multimode fiber in near-infrared communication band. The proposed all-dielectric metasurface lens exhibits miniaturization and excellent performance, which is key to realize optical trapping, holographic display, and beam shaping. The presented design of all-dielectric metasurface lens can be widely applicable to any high-index semiconductor or insulator and can be applied at any desired wavelength.

• 出版日期2018
• 单位哈尔滨工程大学