Mid-Infrared Slow Light Engineering and Tuning in 1-D Grating Waveguide

被引：22

作者：

Ma, Yiming ^{[1
,2
,3
,4
]}

Dong, Bowei ^{[2
,3
,4
,5
]}

Li, Bo ^{[2
,3
,4
]}

Wei, Jingxuan ^{[2
,3
,4
]}

Chang, Yuhua ^{[2
,3
,4
]}

Ho, Chong Pei ^{[6
]}

Lee, Chengkuo ^{[1
,2
,3
,4
,5
]}

机构：

[1] NUS Suzhou Res Inst, Suzhou 215123, Peoples R China

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[3] Natl Univ Singapore, Ctr Intelligent Sensors, Singapore 117608, Singapore

[4] Natl Univ Singapore, MEMS, Singapore 117608, Singapore

[5] Natl Univ Singapore, Ctr Life Sci, NUS Grad Sch Integrat Sci & Engn, Singapore 117456, Singapore

[6] Univ Tokyo, Dept Elect Engn & Informat Syst, Tokyo 1138656, Japan

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2018年 / 24卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Slow light; gratings; optical waveguides; dispersion; DELAY-BANDWIDTH PRODUCT; SILICON; CHIP; ENHANCEMENT; DISPERSION; PLATFORMS; DEVICE; GAP;

D O I：

10.1109/JSTQE.2018.2827659

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The design, fabrication, and characterization of 1-D grating waveguide as slow light structure working in mid-infrared (MIR) region are demonstrated for the first time. The effects of various structural parameters on slow light properties are investigated through theoretical analysis, simulation and experimental verification, providing guidance on slow light engineering in 1-D grating waveguide. By adjusting structural parameters, average group indices of 9.4-15.5 with bandwidths of 23-66 nm and normalized delay-bandwidth products of 0.093-0.164 are obtained. Thermo-optic tuning is also demonstrated with pi phase shift and group index tuning from 23 to 33 at the wavelength of 3.9024 mu m by applying 1.4 mA current. The proposed tunable 1-D grating slow light waveguide provides a promising platform for various MIR applications such as on-chip absorption-based biochemical sensors, tunable optical buffers, and thermo-optic modulators.

引用

页数：8

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