Ultra-compact wideband filter with sidelobe suppression based on double modulated grating-assisted microring resonator

被引：1

作者：

Fang, Chuanqi ^{[1
]}

Shrestha, Vivek Raj ^{[2
]}

Ukaegbu, Ikechi Augustine ^{[3
]}

Ren, Guanghui ^{[4
]}

Pan, Shilong ^{[1
]}

Nakarmi, Bikash ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing 211106, Peoples R China

[2] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[3] Nazarbayev Univ, Sch Engn & Digital Sci, 53 Kabanbay Batyr Ave, Nur Sultan 010000, Kazakhstan

[4] RMIT Univ, Integrated Photon & Applict Ctr InPAC, Sch Engn, Melbourne, Vic 3001, Australia

来源：

OPTICS CONTINUUM | 2022年 / 1卷 / 04期

关键词：

SILICON; WDM; ACCESS;

D O I：

10.1364/OPTCON.448715

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we propose an ultra-compact wideband filter (WBF) with high sidelobe suppression. The filter consists of a single microring resonator incorporated with a proposed new structure of double modulated subwavelength gratings. The double modulated subwavelength gratings are obtained via two different fill factors with the same period. The ultra-compact WBF achieved FSR-free, flat response with a 3 dB bandwidth of 1.0734 THz and a sidelobe suppression of 19.79 dB. In addition, a low insertion loss of <0.6 dB and a low in-band ripple of less than 0.2 dB were obtained. The filter has a compact device footprint of 380 mu m(2). (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：623 / 632

页数：10