High-efficiency broadband fiber-to-chip coupler using a 3D nanoprinting microfiber

被引：0

作者：

Fan, Dong-hui ^{[1
,2
,3
]}

Zhang, Xing-yu ^{[1
,2
]}

Zhang, Wei-jun ^{[1
,2
,3
]}

Ma, Ruo-yan ^{[1
,2
,3
]}

Xiong, Jia-min ^{[1
,2
,3
]}

Wang, Yu-ze ^{[1
,2
,3
]}

Chen, Zhi-gang ^{[1
,2
,3
]}

Wang, Zhen ^{[1
,2
,3
]}

You, Li-xing ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol SIMIT, State Key Lab Funct Mat Informat, 865 Changning Rd, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Ctr Excellence Superconducting Elect CENSE, 865 Changning Rd, Shanghai 200050, Peoples R China

[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

APPLIED OPTICS | 2023年 / 62卷 / 16期

基金：

中国国家自然科学基金;

关键词：

SINGLE-PHOTON DETECTOR; REFRACTIVE-INDEX; GRATING COUPLERS; OPTICAL-FIBERS; CIRCUITS; DIAMETER;

D O I：

10.1364/AO.488292

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 & SIM;97% at a wavelength of 1542 nm with a wide bandwidth of & SIM;768 nm at the 1-dB cutoff criterion. & COPY; 2023 Optica Publishing Group

引用

页码：4203 / 4212

页数：10

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