Experimental demonstration of a flexible-grid 1 × (2 × 3) mode- and wavelength-selective switch using silicon microring resonators and counter-tapered couplers

Dejun Kong; Hao Lu; Pengjun Wang; Qiang Fu; Shixun Dai; Weiwei Chen; Yuefeng Wang; Bohao Zhang; Lingxiao Ma; Jun Li; Tingge Dai; Jianyi Yang

doi:10.3788/COL202422.011301

Chinese Optics Letters, Volume. 22, Issue 1, 011301(2024)

Experimental demonstration of a flexible-grid 1 × (2 × 3) mode- and wavelength-selective switch using silicon microring resonators and counter-tapered couplers

Dejun Kong¹, Hao Lu¹, Pengjun Wang^2、*, Qiang Fu³, Shixun Dai^1,4, Weiwei Chen^1、**, Yuefeng Wang¹, Bohao Zhang¹, Lingxiao Ma¹, Jun Li¹, Tingge Dai⁵, and Jianyi Yang⁵

Author Affiliations

¹Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China

²College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou 325035, China

³College of Science and Technology, Ningbo University, Ningbo 315300, China

⁴Laboratory of Infrared Materials and Devices, The Research Institute of Advanced Technologies, Ningbo University, Ningbo 315211, China

⁵Department of Information Science and Electronics Engineering and Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China

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Fig. 1. (a) Schematic diagram of the flexible-grid 1 × (2 × 3) MWSS; (b) detailed drawing and (c) cross-sectional view of the proposed two-mode (de)multiplexer; (d) schematic diagram and (e) cross-sectional view of the mentioned silicon MRR; (f) structure of the proposed crossing waveguide.

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Fig. 2. Working principle of forming the tunable BW.

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Fig. 3. Simulated transmission spectra of the designed silicon-based flexible-grid 1 × (2 × 3) MWSS in the typical states.

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Fig. 4. Simulated maximum IL, worst CT, and minimum ER of (a) the designed flexible-grid 1 × (2 × 3) MWSS or (b) the designed flexible-grid 1 × (2 × 3) MWSS cascaded with a mode multiplexer and six mode demultiplexers changing with ΔW.

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Fig. 5. Microscope image of the fabricated module.

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Fig. 6. Measured transmission spectra of the fabricated module.

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Fig. 7. Measured dynamic response of the fabricated device.

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Table 1. Typical States of the Presented Flexible-grid 1 × (2 × 3) MWSS in the Worst Situation

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Table 1. Typical States of the Presented Flexible-grid 1 × (2 × 3) MWSS in the Worst Situation

States	Output Ports
States	O1	O2	O3	O4	O5	O6
1	TE₀-λ₂	TE₀-λ₃	TE₀-λ₁	TE₁-λ₂	TE₁-λ₃	TE₁-λ₁
2	TE₀-λ₃	TE₀-λ₂	TE₀-λ₁	TE₁-λ₃	TE₁-λ₂	TE₁-λ₁
3	TE₁-λ₃	TE₀-λ₂	TE₀-λ₁	TE₀-λ₃	TE₁-λ₂	TE₁-λ₁
4	TE₀-λ₂	TE₁-λ₃	TE₁-λ₁	TE₁-λ₂	TE₀-λ₃	TE₀-λ₁
5	TE₁-λ₃	TE₀-λ₂	TE₁-λ₁	TE₁-λ₂	TE₀-λ₃	TE₀-λ₁
6	TE₁-λ₂	TE₀-λ₃	TE₁-λ₁	TE₁-λ₃	TE₀-λ₂	TE₀-λ₁
7	TE₀-λ₁	TE₁-λ₂	TE₁-λ₃	TE₁-λ₁	TE₀-λ₂	TE₀-λ₃
8	TE₁-λ₁	TE₁-λ₂	TE₁-λ₃	TE₀-λ₁	TE₀-λ₂	TE₀-λ₃
9		TE₀-λ₁–λ₃		TE₁-λ₁–λ₃
10		TE₀-λ₂, λ₃	TE₀-λ₁		TE₁-λ₂, λ₃	TE₁-λ₁
11		TE₀-λ₁, λ₃	TE₀-λ₂		TE₁-λ₁, λ₃	TE₁-λ₂
12		TE₀-λ₁, λ₂	TE₀-λ₃		TE₁-λ₁, λ₂	TE₁-λ₃
13		TE₀-λ₃	TE₀-λ₁, λ₂		TE₁-λ₃	TE₁-λ₁, λ₂
14		TE₀-λ₂	TE₀-λ₁, λ₃		TE₁-λ₂	TE₁-λ₁, λ₃
15		TE₀-λ₁	TE₀-λ₂, λ₃		TE₁-λ₁	TE₁-λ₂, λ₃
16			TE₀-λ₁–λ₃			TE₁-λ₁–λ₃

Table 2. Optimized Segments’ Widths for the Bus Waveguide in the Coupling Region
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Table 2. Optimized Segments’ Widths for the Bus Waveguide in the Coupling Region
Symbol Value/µm Symbol Value/µm Symbol Value/µm
W₀ 0.85 W₁ 0.85 W₂ 0.74
W₃ 0.75 W₄ 0.78 W₅ 0.71
W₆ 0.62 W₇ 0.62 W₈ 0.58
W₉ 0.59 W₁₀ 0.45

Table 3. Optimized Segments’ Widths for the Taper in the Crossing Waveguide
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Table 3. Optimized Segments’ Widths for the Taper in the Crossing Waveguide
Symbol Value/µm Symbol Value/µm Symbol Value/µm
W_C0 0.45 W_C1 0.70 W_C2 0.86
W_C3 0.88 W_C4 0.90 W_C5 0.90
W_C6 0.96 W_C7 1.04 W_C8 1.16
W_C9 1.16 W_C10 1.16 W_C11 1.10
W_C12 1.06 W_C13 1.06 W_C14 0.90
W_C15 1.00

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Dejun Kong, Hao Lu, Pengjun Wang, Qiang Fu, Shixun Dai, Weiwei Chen, Yuefeng Wang, Bohao Zhang, Lingxiao Ma, Jun Li, Tingge Dai, Jianyi Yang, "Experimental demonstration of a flexible-grid 1 × (2 × 3) mode- and wavelength-selective switch using silicon microring resonators and counter-tapered couplers," Chin.Opt.Lett. 22, 011301 (2024)

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Paper Information

Category: Integrated Optics

Received: Jun. 7, 2023

Accepted: Aug. 15, 2023

Published Online: Jan. 2, 2024

The Author Email: Pengjun Wang (wangpengjun@wzu.edu.cn), Weiwei Chen (chenweiwei@nbu.edu.cn)

DOI:10.3788/COL202422.011301

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Typical States of the Presented Flexible-grid 1 × (2 × 3) MWSS in the Worst Situation

Table 1. Typical States of the Presented Flexible-grid 1 × (2 × 3) MWSS in the Worst Situation

Table 2. Optimized Segments’ Widths for the Bus Waveguide in the Coupling Region

Table 2. Optimized Segments’ Widths for the Bus Waveguide in the Coupling Region

Table 3. Optimized Segments’ Widths for the Taper in the Crossing Waveguide

Table 3. Optimized Segments’ Widths for the Taper in the Crossing Waveguide