A controllable coupling structure for silicon microring resonators based on adiabatic elimination

Fenghe Yang; Pengfei Sun; Ruixuan Chen; Zhiping Zhou

doi:doi:10.3788/COL202018.013601

Chinese Optics Letters, 2020, 18 (1): 013601, Published Online: Jan. 7, 2020

A controllable coupling structure for silicon microring resonators based on adiabatic elimination Download： 1008次

Fenghe Yang ^1,2,3Pengfei Sun ^1,3Ruixuan Chen ^1,3Zhiping Zhou ^1,2,3,*

Author Affiliations

¹ State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China

² Peking University Shenzhen Research Institute, Shenzhen 518057, China

³ Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing 100871, China

Figures & Tables

Fig. 1. (a) Scanning electron microscope (SEM) image of the AE-based coupler for the resonator-waveguide coupling system. (b) The cross section of the coupling region and (c) eigen modes in it.

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Fig. 2. Intensity evolution along the AE-based coupler. Here, $λ = 1550 nm$ and, in the analytical model, FEM simulation, and experiments $γ = 0$ .

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Fig. 3. Spectral responses of the fabricated resonator-waveguide coupling systems with embedded AE-based coupler: (a) under-coupled state, (b) critically coupled state, and (c) over-coupled state. The insets are SEM images. Here, in the analytical model, FEM simulation, and experiments $γ = 0$ .

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Fig. 4. (a) Lateral PN junction and vertical PN junction applied in the proposed AE-based coupler. (b) The effective self-coupling coefficient depending on the changes of the real part of $n_{DWG}^{eff}$ . (c) Extra coupling loss depending on the changes of the loss coefficient $γ$ . The length $L$ is $200 μ m$ for all lines. The MZI is assumed to be balanced.

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Fenghe Yang, Pengfei Sun, Ruixuan Chen, Zhiping Zhou. A controllable coupling structure for silicon microring resonators based on adiabatic elimination[J]. Chinese Optics Letters, 2020, 18(1): 013601.

A controllable coupling structure for silicon microring resonators based on adiabatic elimination Download： 1008次

Fig. 1. (a) Scanning electron microscope (SEM) image of the AE-based coupler for the resonator-waveguide coupling system. (b) The cross section of the coupling region and (c) eigen modes in it.

Fig. 2. Intensity evolution along the AE-based coupler. Here, $λ = 1550 nm$ and, in the analytical model, FEM simulation, and experiments $γ = 0$ .

Fig. 3. Spectral responses of the fabricated resonator-waveguide coupling systems with embedded AE-based coupler: (a) under-coupled state, (b) critically coupled state, and (c) over-coupled state. The insets are SEM images. Here, in the analytical model, FEM simulation, and experiments $γ = 0$ .

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A controllable coupling structure for silicon microring resonators based on adiabatic elimination Download： 1008次

Fig. 1. (a) Scanning electron microscope (SEM) image of the AE-based coupler for the resonator-waveguide coupling system. (b) The cross section of the coupling region and (c) eigen modes in it.

Fig. 2. Intensity evolution along the AE-based coupler. Here, λ=1550 nm and, in the analytical model, FEM simulation, and experiments γ=0.

Fig. 3. Spectral responses of the fabricated resonator-waveguide coupling systems with embedded AE-based coupler: (a) under-coupled state, (b) critically coupled state, and (c) over-coupled state. The insets are SEM images. Here, in the analytical model, FEM simulation, and experiments γ=0.

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Fig. 2. Intensity evolution along the AE-based coupler. Here, $λ = 1550 nm$ and, in the analytical model, FEM simulation, and experiments $γ = 0$ .

Fig. 3. Spectral responses of the fabricated resonator-waveguide coupling systems with embedded AE-based coupler: (a) under-coupled state, (b) critically coupled state, and (c) over-coupled state. The insets are SEM images. Here, in the analytical model, FEM simulation, and experiments $γ = 0$ .