Dual-mode broadband compact 2 x 2 optical power splitter using sub-wavelength metamaterial structures

被引：33
|
作者：
Shiran, Hatef [1 ]
Zhang, Guowu [1 ]
Liboiron-Ladouceur, Odile [1 ]
机构：
[1] McGill Univ, Dept Elect & Comp Engn, Montreal, PQ H3A 0E9, Canada
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 15期
基金：
加拿大自然科学与工程研究理事会;
关键词：
DIRECTIONAL-COUPLERS; GRATING COUPLERS; MULTIMODE; PERFORMANCE; PRINCIPLES; SWITCH;
D O I：
10.1364/OE.423882
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The multimode power splitter is a fundamental component in mode-division multiplexed systems. In this paper, we design and characterize a broadband compact dual-mode multimode interferometer (MMI) optical power splitter based on subwavelength grating (SWG) structures. The optimized dual-mode MMI is three times more compact than its conventional mode insensitive MMIs and shows low loss and low crosstalk flat response over 100 nm bandwidth. Characterizations of the fabricated dual-mode splitter show that the total excess loss in the experiment is less than 0.1 dB and 0.65 dB for TE0 and TE1, respectively, and the modal crosstalk is less than -17 dB for both input modes. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：23864 / 23876
页数：13
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