Carbon-nanotube-on-waveguide thermo-optic tuners

被引：9

作者：

Dash, Aneesh ^{[1
]}

Mere, Viphretuo ^{[1
]}

Gangavarapu, P. R. Y. ^{[1
]}

Nambiar, S. R. ^{[1
]}

Selvaraja, S. K. ^{[1
]}

Naik, A. K. ^{[1
]}

机构：

[1] Indian Inst Sci, Ctr Nano Sci & Engn, Bangalore, Karnataka, India

来源：

OPTICS LETTERS | 2018年 / 43卷 / 21期

关键词：

PHOTONIC INTEGRATED-CIRCUITS; SILICON MICRORING RESONATORS; GATE LENGTHS; GRAPHENE; TRANSISTORS;

D O I：

10.1364/OL.43.005194

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate on-waveguide thermo-optic tuners based on solution-processed metallic carbon nanotubes (CNTs) on silicon-on-insulator (SOI) and silicon nitride (SiN) microring resonators operating around 1550 nm. On SOI microring resonators using planarized wire waveguides, a thermo-optic power efficiency of 29 mW/FSR and a thermal transient of 1.3 mu s are achieved. The heater is shown to be more power-efficient than conventional metal heaters and has lower thermal transient than both metal heaters and graphene-based heaters. On SiN microring resonators using rib waveguides, improvement in power efficiency with an increase in coverage of CNTs is demonstrated, indicating localized heating using the CNTs; this is favorable for low thermal cross-talk. An optimal power efficiency of 142 mW/FSR and a thermal transient of 5.8 mu s are achieved. (C) 2018 Optical Society of America

引用

页码：5194 / 5197

页数：4