High-efficiency broadband fiber-to-chip coupler using a 3D nanoprinting microfiber.
High-efficiency broadband fiber-to-chip coupler using a 3D nanoprinting microfiber.
复制标题
DOI：
10.1364/ao.488292
复制
发表时间：
2023-03
期刊：
影响因子：
1.9
通讯作者：
D-H Fan;Xingyu Zhang;Weijun Zhang;Ruobin Ma;J. Xiong;Yu-Ze Wang;Zhigang Chen;Zhen Wang;L. You
中科院分区：
文献类型：
--
作者：
D-H Fan;Xingyu Zhang;Weijun Zhang;Ruobin Ma;J. Xiong;Yu-Ze Wang;Zhigang Chen;Zhen Wang;L. You
我们提出了一种方法，用于耦合锥形光纤的倒锥形SiN波导制造微光纤使用3D纳米印刷光刻。微光纤由三部分组成：锥形包层帽、S形弯曲和直的部分，全部由高折射率材料组成。光通过包层帽从锥形光纤电耦合到印刷微光纤。然后，光以低损耗传输通过S弯曲和直线部分，并最终通过倏逝场耦合到波导。在模拟中，我们的设计可以实现高达97%的耦合效率（TE模式）在1542 nm的波长与宽带宽为1768 nm的1-dB截止标准。
We propose a method for coupling a tapered optical fiber to an inverted tapered SiN waveguide by fabricating a microfiber using 3D nanoprinting lithography. The microfiber consists of three parts: a tapered cladding cap, an S-bend, and a straight part, all composed of high-refractive-index material. Light is adiabatically coupled from the tapered fiber to the printed microfiber through the cladding cap. The light is then transmitted through the S-bend and the straight part with low loss and is finally coupled to the waveguide through the evanescent field. In the simulation, our design can achieve a high coupling efficiency (TE mode) of ∼97% at a wavelength of 1542 nm with a wide bandwidth of ∼768n m at the 1-dB cutoff criterion.