S. S. Hindal, . . . . . Z. F. . . . . . . Al-Bawai, and . . . . A. I. . Mahmood, “Highly Sensitive Refractive Index Sensor Based on Dual Peak Plasmonic Tapered D-shaped PM-PCF Coated with Gold Nano-Structures”, IJL, vol. 24, no. 1, pp. 6–20, Jun. 2025, doi: 10.31900/ijl.v24i1.489.