Khun-in R, Usman A, Bhatranand A, Jiraraksopakun Y, Choowitsakunlert S, Theeradejvanichkul T, Yokoi H. Design and Fabrication of 1x2 Multimode Interference Coupler Using Photosensitive Permanent Material for Wavelength Division Demultiplexing. IEET [internet]. 2025 Jul. 2 [cited 2025 Jul. 7];11(1):12-20. available from: https://ph04.tci-thaijo.org/index.php/IEET/article/view/10265