Among various technologies to implement the multiplexing/demultiplexing functionality, etched diffraction gratings (EDGs) have shown great potential due to their compactness and high spectral finesse.

• 而这其中基于平面波导集成技术设计制作的刻蚀衍射光栅器件，由于具有结构紧凑、光谱性能优异等显著优势，成为其中具有广泛应用潜力的一种。