“ Fabrication of Optical Filters Using Photonic Layer Structures”, J. Int. Acad. Phys. Sci., vol. 5, no. 1-4, pp. 1–13, Dec. 2001, Accessed: Oct. 23, 2026. [Online]. Available: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/736