Algorithmically calibrated optical switch with high-extinction-ratio and low-polarization-dependence on 3-p m-thick SOI platform

被引：1

作者：

Li, Ang ^{[1
,2
]}

Zhao, Nengyang ^{[1
,2
]}

Liu, Chenyang ^{[1
,2
]}

Lu, Ruotian ^{[1
,2
]}

Wang, Ruxue ^{[1
,2
]}

Qiu, Chao ^{[1
,2
]}

Wu, Aimin ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Natl Key Lab Mat Integrated Circuits, 865 Changning Rd, Shanghai 200050, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2024年 / 560卷

基金：

中国国家自然科学基金;

关键词：

BROAD-BAND; SILICON; DESIGN; OPTIMIZATION; FABRICATION; CROSSTALK; TIME;

D O I：

10.1016/j.optcom.2024.130447

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Crosstalk, calibration complexity, and polarization dependence obstacle the precision of optical networks such as microwave photonics beamforming networks (MPBNs). The optical switch presented in this work, boasting high tolerance and polarization insensitivity, utilizes multimode interferometers (MMIs), a thermooptical phase shifter, and variable optical attenuators (VOAs) on the 3 pm -thick silicon -on -insulator (SOI) platform. The switch exhibits extinction ratio (ER) exceeding 32.5 dB within 140 nm bandwidth, with maximum ER of 50 dB, accompanied by 0.4 dB loss, and features switching speed of 16 ps/21 ps In 10 -layer networks, the VOA -assist golden -section algorithm enables optimal calibration within 170 iterations, serving as fundamental component for establishing precise optical networks.

引用

页数：8