研究目的
To design a new mode converter for mode division multiplexing networks that can convert between modes TE0 to TE1/TE2 or TE1 to TE1/TE2 with high efficiency and compact size.
研究成果
The designed mode converter achieves high conversion efficiency over 99% for mode conversions between TE0 to TE1/TE2 and TE1 to TE1/TE2, with low crosstalk below 0.03dB and compact size of 210μm. It offers large fabrication tolerances, making it suitable for CMOS technology and applications in reconfigurable mode division multiplexing networks.
研究不足
The study is based on simulations and does not include experimental validation. The device performance may be affected by real-world fabrication imperfections not fully accounted for in simulations.
1：Experimental Design and Method Selection:
The study involves designing a mode converter using silicon Y-junction couplers and a butterfly-shaped phase shifter on a silicon-on-insulator platform. Theoretical models and simulations are used to optimize parameters for mode conversion efficiency.
2：Sample Selection and Data Sources:
Simulations are performed using rib waveguide structures with specified refractive indices and dimensions.
3：List of Experimental Equipment and Materials:
Silicon substrate, core and clad materials with refractive indices nc=
4：45 and nclad=46, rib waveguide with height H0=5μm, slab height h0=06μm, and various waveguide widths and lengths as detailed in the paper. Experimental Procedures and Operational Workflow:
Parameters such as waveguide widths, lengths, and curvatures are varied in simulations to achieve optimal mode conversion. The device is simulated for different input modes (TE0 and TE1) and output modes (TE1 and TE2).
5：2). Data Analysis Methods:
5. Data Analysis Methods: Simulation results are analyzed to measure conversion efficiency, insertion loss, and crosstalk, with performance metrics calculated based on power measurements.
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