Dual-Mode Large-Mode-Area Multicore Fiber With Air-Hole Structure

IEEE Photonics Journal

Yudong Lian¹  Yuqin Zhang¹  Mengxin Yang¹  Jingbo Wang¹ 

[1] Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin, China;

关键词: Multicore fiber;    dual mode;    large mode area;    bending loss.;   

DOI  :  10.1109/JPHOT.2019.2932985

来源: DOAJ

【 摘 要 】

A novel dual-mode large-mode-area multicore fiber with air-hole structure, which is a quasi-37 core structured fiber with 20 air holes and 17 cores, is proposed in this paper. This fiber can realize strict dual-mode operation, that is, the fundamental mode HE₁₁ and the second-order mode HE₂₁ operation. The air-hole structure makes the second-order modes TE₀₁ and TM₀₁ cut off. Effects of structural parameters on effective refractive index and effective area of fundamental mode are investigated systematically. By optimizing the structural parameters of the fiber, effective area of fundamental mode is up to 1557.91 μm² and maintaining a low bending loss (less than 10^-4 dB/m at R > 0.47 m) while keeping dual-mode operation. The fiber can be used for large-mode-area high-power optical fiber laser, amplifier, FTTH and so on.

【 授权许可】

Unknown