Kangmei Li

Kangmei Li

I am currently a sixth-year Ph. D. student working in the Integrated Photonics Laboratory advised by Prof. Amy C. Foster in the Department of Electrical and Computer Engineering at Johns Hopkins University.

Prior to Johns Hopkins, I got my Bachelor degree in physics at Peking University.

Google Scholar page

e-mail address: kli21@jhu.edu

Research

My research focuses on nonlinear optics in waveguiding devices. Specifically, I have realized 10 Gb/s all-optical NAND/AND logic operations using four-wave mixing Bragg scattering (FWM-BS) in highly nonlinear fiber (HNLF), and demonstrated low-power frequency conversion via FWM-BS with 15% conversion efficiency and greater than 4 nm bandwidth as well as 1.25 Gb/s NAND/AND logic gates in hydrogenated amorphous silicon (a-Si:H) waveguides. Besides, I also achieved 23-dB four-wave mixing efficiency enhancement in a 10-μm radius a-Si:H ring resonator compared to a 4-mm long a-Si:H waveguide. Currently, I am working on optical signal processing and quantum logic gate and on-demand single photon sources in a-Si:H microring resonators.

I am interested in developing high-speed integrated photonic devices and optical communication systems.

Selected Publications

Parametric Nonlinear Silicon-Based Photonics

Kangmei Li, Amy C. Foster

Proceedings of the IEEE, (2018), submitted.

Nonlinear Optics in Hydrogenated Amorphous Silicon

Kangmei Li, Amy C. Foster

IEEE Journal of Selected Topics in Quantum Electronics, (2018), submitted.

Ultra-low Power Wavelength Conversion in a Hydrogenated Amorphous Silicon Microring Resonator

Kangmei Li, Michael R. Kossey, Amy C. Foster

in Conference on Lasers and Electro-Optics (CLEO), (2018).

Four-Wave Mixing in a Multi-Layer SiNx/a-Si:H Photonic Chip

Michael R. Kossey, Kangmei Li, Hongcheng Sun, Amy C. Foster

in Conference on Lasers and Electro-Optics (CLEO), (2018).

Four-Wave Mixing Bragg Scattering in Hydrogenated Amorphous Silicon Waveguides

Kangmei Li, Hongcheng Sun, Amy C. Foster

Optics Letters (2017).

1.25-Gb/s All-Optical NAND/AND Logic Gates in a Hydrogenated Amorphous Silicon Waveguide

Kangmei Li, and Amy C. Foster

in Conference on Lasers and Electro-Optics (CLEO), (2017).

High-Speed All-Optical NAND/AND Logic Gates Using Four-Wave Mixing Bragg Scattering

Kangmei Li, Hong-Fu Ting, Mark A. Foster, Amy C. Foster

Optics Letters (2016).

Ultralow Power Signal Depletion via Four-wave Mixing Bragg Scattering in Hydrogenated Amorphous Silicon Waveguide

Kangmei Li, Hongcheng Sun, Amy C. Foster

in Conference on Lasers and Electro-Optics (CLEO), (2016).

A High Speed All-Optical NAND Logic Gate Using Four-Wave Mixing

Kangmei Li, Hong-Fu Ting, Mark A. Foster, Amy C. Foster

in Conference on Lasers and Electro-Optics (CLEO), (2015).

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