Theoretical verification of a silicon-wire flat-spectral-band wavelength filter based on multimode interference couplers with symmetric and asymmetric splitting ratios for the broadband operating range

被引：4
作者：
Jeong, Seok-Hwan [1 ]
机构：
[1] Univ Suwon, Dept Elect Mat Engn, Hwaseong 18323, South Korea
来源：
APPLIED OPTICS | 2021年 / 60卷 / 30期
关键词：
MACH-ZEHNDER INTERFEROMETERS; CWDM; PHOTONICS; WDM; DEMULTIPLEXERS;
D O I：
10.1364/AO.437694
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel, to the best of our knowledge, device scheme for a silicon-nanowire flat-spectral-band wavelength optical filter is proposed and theoretically demonstrated. The proposed wavelength filter is composed of cascade-connected multiple delayed interference optical delay lines, together with several multimode interference couplers with symmetric and asymmetric splitting ratios. Theoretical calculations based on analytic and numerical simulations exhibit flatband spectra over a wavelength range of >80 nm with potentially better production yield for arbitrary channel spacing. (C) 2021 Optical Society of America
引用
收藏
页码：9411 / 9418
页数：8
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