Reconfigurable add-drop filter based on an antisymmetric multimode photonic crystal nanobeam cavity in a silicon waveguide

被引：9

作者：

Dong, Penghui ^{[1
]}

Liu, Chaoyue ^{[1
]}

Zhang, Long ^{[1
]}

Dai, Daoxin ^{[1
]}

Shi, Yaocheng ^{[1
]}

机构：

[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Zijingang Campus, Hangzhou 310058, Peoples R China

来源：

OPTICS EXPRESS | 2022年 / 30卷 / 10期

基金：

中国国家自然科学基金;

关键词：

ULTRA-COMPACT; BROAD-BAND; SWITCH;

D O I：

10.1364/OE.457883

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have designed and demonstrated a reconfigurable channel add-drop filter (ADF) based on an antisymmetric multimode photonic crystal nanobeam cavity (AM-PCNC) in a silicon waveguide. The proposed AM-PCNC can realize channel add-drop filtering by selectively filtering and reflecting the fundamental mode (TE0) and 1st-order mode (TE1) in the multimode waveguide. A high-performance add-drop filter has been demonstrated with a high extinction ratio of 28.2 dB and an insertion loss of 0.18 dB. Meanwhile, the reconfigurable add-dropping has been realized by heating the nanobeam cavity to tune the filtering wavelength. A tuning efficiency of 0.464 nm/mW was measured. The rising and falling time are similar to 6.5 mu s and similar to 0.6 mu s, respectively, which are at microsecond time scale. The footprint of the involved nanobeam cavity is only 16.5 mu m(2). The device can potentially provide an integrated component for optical switch array, routers, and wavelength-division multiplexing in the optical networks. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：17332 / 17339

页数：8