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High-efficiency broadband fiber-to-chip coupler using a 3D nanoprinting microfiber
Fan, Dong-Hui, Zhang, Xing-Yu, Zhang, Wei-Jun, Ma, Ruo-Yan, Xiong, Jia-Min, Wang, Yu-Ze, Chen, Zhi-Gang, Wang, Zhen, You, Li-Xing
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| Title | High-efficiency broadband fiber-to-chip coupler using a 3D nanoprinting microfiber |
|---|---|
| Authors | Fan, Dong-Hui, Zhang, Xing-Yu, Zhang, Wei-Jun, Ma, Ruo-Yan, Xiong, Jia-Min, Wang, Yu-Ze, Chen, Zhi-Gang, Wang, Zhen, You, Li-Xing |
| Publication Year |
2023
|
| Description |
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 ~768 nm at the 1-dB cut-off criterion.
Comment: 14 pages, 8 figures |
| Document Type |
Working Paper
|
| Subject Terms | |
