Large mode area double-layer all-solid anti-resonant fiber for high-power fiber lasers

Results in Physics

Shuai Gu¹  Zhen Xing²  Xin Wang²  Shuqin Lou² 

[1] State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Hefei 230037, Anhui Province, China;Key Laboratory of Communication and Information Systems, Beijing Municipal Commission of Education, School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;

关键词: Large mode area;    All-solid antiresonant fiber;    Single mode;    Anti-resonant effect;   

DOI  :  

来源: DOAJ

【 摘 要 】

A novel double-layer all-solid anti-resonant fiber (DL-AAF) is proposed to develop large mode area (LMA) fiber for high-power fiber laser applications. Single-mode property and mode field area scaling are investigated in simulations. Numerical results show the fiber can achieve strong suppression of higher order modes (HOMs) even with a large core size. With a core diameter of 80 μm, the loss ratio defined as the ratio of the lowest loss of HOMs to that of fundamental mode can exceed 3500, and the mode field area reaches 3030 μm2 at the wavelength of 1.064 μm. By further expanding the core size, the mode filed area can be enlarged to 7481 μm2 while the fiber is ensured to be single-mode. This is a significant enhancement in mode field area scale for the current works on LMA AAF.

【 授权许可】

Unknown