Khun-in, R., Usman, A., Bhatranand, A., Jiraraksopakun, Y., Choowitsakunlert, S., Theeradejvanichkul, T., & Yokoi, H. (2025). Design and Fabrication of 1x2 Multimode Interference Coupler Using Photosensitive Permanent Material for Wavelength Division Demultiplexing. International Electrical Engineering Transactions, 11(1), 12–20. retrieved from https://ph04.tci-thaijo.org/index.php/IEET/article/view/10265