Ultra-flat dispersion in an integrated waveguide with five and six zero-dispersion wavelengths for mid-infrared photonics

Yuhao Guo; Zeinab Jafari; Lijuan Xu; Changjing Bao; Peicheng Liao; Guifang Li; Anuradha M. Agarwal; Lionel C. Kimerling; Jurgen Michel; Alan E. Willner; Lin Zhang

doi:10.1364/PRJ.7.001279

Journals >Photonics Research >Volume 7 >Issue 11 >Page 1279 > Article

Photonics Research
Vol. 7, Issue 11, 1279 (2019)

Ultra-flat dispersion in an integrated waveguide with five and six zero-dispersion wavelengths for mid-infrared photonics | Editors' Pick

Yuhao Guo¹, Zeinab Jafari^1、2, Lijuan Xu^1、3, Changjing Bao⁴, Peicheng Liao⁴, Guifang Li⁵, Anuradha M. Agarwal⁶, Lionel C. Kimerling⁶, Jurgen Michel⁶, Alan E. Willner⁴, and Lin Zhang^1、*

Author Affiliations

¹Key Laboratory of Opto-electronic Information Technical Science of Ministry of Education and Key Laboratory of Integrated Opto-electronic Technologies and Devices in Tianjin, School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China

²School of Computer and Electrical Engineering, Shiraz University, Shiraz, Fars, Iran

³School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin 300222, China

⁴Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA

⁵College of Optics and Photonics, CREOL and FPCE, University of Central Florida, Orlando, Florida 32816, USA

⁶Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

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DOI: 10.1364/PRJ.7.001279 Cite this Article Set citation alerts

Yuhao Guo, Zeinab Jafari, Lijuan Xu, Changjing Bao, Peicheng Liao, Guifang Li, Anuradha M. Agarwal, Lionel C. Kimerling, Jurgen Michel, Alan E. Willner, Lin Zhang. Ultra-flat dispersion in an integrated waveguide with five and six zero-dispersion wavelengths for mid-infrared photonics[J]. Photonics Research, 2019, 7(11): 1279 Copy Citation Text

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Abstract

We propose a new type of dispersion flattening technology, which can generate an ultra-flat group velocity dispersion profile with five and six zero-dispersion wavelengths (ZDWs). The dispersion value varies from

0.15

to 0.35 ps/(nm·km) from 4 to 8 μm, which to the best of our knowledge is the flattest one reported so far, and the dispersion flatness is improved by more than an order of magnitude. We explain the principle of producing six ZDWs. Mode distribution in this waveguide is made stable over a wide bandwidth. General guidelines to systematically control the dispersion value, sign, and slope are provided, and one can achieve the desired dispersion by properly adjusting the structural parameters. Fabrication tolerance of this waveguide is also examined.