Scholarlink

<p>Photonic crystal fibers (PCFs) are a new type of optical fibers that possess characteristics such as endlessly single mode and adjustable dispersion. The defects of low numerical aperture (NA) and inability to achieve high coupling efficiency limit the development and applications of PCFs. In recent years, advances in research and manufacturing technology for metalenses are opening the door to PCF innovations. In this paper, we demonstrate a PCF coupling metalens (PCF-CM) integrated directly on the end face of the PCF core, which can realize wavefront shaping at dual telecommunication wavelengths of 1310&#xa0;nm and 1550&#xa0;nm. Moreover, the NA of the PCF is improved from less than 0.1 to 0.5, and an average coupling efficiency of 90.93% is achieved in the broadband range of 1300&#xa0;nm to 1610&#xa0;nm. This work is conducive to improving the PCF performance and expanding its application range, while also driving further investigations into PCF-based devices.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Photonic crystal fiber coupling metalens for dual telecommunication wavelengths with a high numerical aperture

  • 期刊论文

  • 发表日期：

    2025年1月7日

查看全文
  • Wenbo Zheng,
  • Aihui Sun,
  • Xiaoliang He,
  • Yan Kong

摘要

Photonic crystal fibers (PCFs) are a new type of optical fibers that possess characteristics such as endlessly single mode and adjustable dispersion. The defects of low numerical aperture (NA) and inability to achieve high coupling efficiency limit the development and applications of PCFs. In recent years, advances in research and manufacturing technology for metalenses are opening the door to PCF innovations. In this paper, we demonstrate a PCF coupling metalens (PCF-CM) integrated directly on the end face of the PCF core, which can realize wavefront shaping at dual telecommunication wavelengths of 1310 nm and 1550 nm. Moreover, the NA of the PCF is improved from less than 0.1 to 0.5, and an average coupling efficiency of 90.93% is achieved in the broadband range of 1300 nm to 1610 nm. This work is conducive to improving the PCF performance and expanding its application range, while also driving further investigations into PCF-based devices.