Enhancing Multi-channel Filter Performance Using Photonic Symmetric Serial Loops with Two Defects
摘要
We utilize the Green’s function method based on interface response theory to explore the transmission characteristics and band structure of a symmetric serial loop structure (SSLS). Analysis of transmission rates reveals defect mode behavior influenced by defect lengths and the number of cells. Furthermore, asymmetrical defects introduce double defect modes, enabling multi-channel selective filtering. Through systematic parameter tuning, this structure demonstrates potential for advanced filtering applications in the radiofrequency domain.