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[J]. Chinese Optics Letters, 2024, 22(1): 011301
- Chinese Optics Letters
- Vol. 22, Issue 1, 011301 (2024)
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.
Fig. 2. Working principle of forming the tunable BW.
Fig. 3. Simulated transmission spectra of the designed silicon-based flexible-grid 1 × (2 × 3) MWSS in the typical states.
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.
Fig. 5. Microscope image of the fabricated module.
Fig. 6. Measured transmission spectra of the fabricated module.
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 2. Optimized Segments’ Widths for the Bus Waveguide in the Coupling Region
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Table 3. Optimized Segments’ Widths for the Taper in the Crossing Waveguide
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