Comprehensive grating enabled silicon nitride fiber-chip couplers in the SNIR wavelength band

被引：3
|
作者：
Nambiar, Siddharth [1 ]
Chatterjee, Avijit [1 ]
Selvaraja, Shankar Kumar [1 ]
机构：
[1] Indian Inst Sci, Ctr Nanosci & Engn, Bengaluru 560012, India
来源：
OPTICS EXPRESS | 2022年 / 30卷 / 03期
关键词：
PHOTONIC CIRCUITS; SOI PLATFORM; PHOTODETECTOR;
D O I：
10.1364/OE.444784
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present silicon nitride grating enabled fiber-chip coupling in the sub-near-infrared band. We present a comprehensive design and simulation and experimental demonstration of uniform and apodized grating couplers, with and without bottom reflectors. The mode engineering yields a best efficiency of -1.6 dB for apodized grating design, which is further improved to -0.66 dB with a bottom reflector. Experimentally, we demonstrate a coupling efficiency of -2.2 dB fir the optimized design. Furthermore, we present a detailed simulation and measurement comparison of various grating parameters and the effect of fabrication tolerances on the grating performance. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码：4327 / 4341
页数：15
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