研究目的
Designing a dual-layer grating coupler for efficient vertical coupling between a single-mode fiber and silicon nanowires, featuring polarization diversity and operation at both 1.3 and 1.55 μm wavelength bands.
研究成果
The dual-layer grating coupler design successfully achieves efficient vertical coupling between a single-mode fiber and silicon nanowires, with polarization diversity and operation at both 1.3 and 1.55 μm wavelength bands. The design demonstrates the potential for high integration in photonic integrated circuits.
研究不足
The design requires precise optimization of grating parameters and waveguide dimensions to achieve desired phase-matching conditions. The coupling efficiency is sensitive to the design parameters, and achieving high efficiency for both wavelength bands simultaneously involves trade-offs.
