D. V. Ravichandran, D. A. Nesarani, M. J. Paulin, A. Anist, B. V, and G. N, “Crosstalk Two-Channel DWDM Photonic Demultiplexer Based on 2D Photonic Crystal with Circular Resonant Cavity”, IJASIS, pp. 124–144, Jan. 2026, doi: 10.29284/ijasis.12.1.2026.124-144.