Design and Experimental Demonstration of a Compact and Wideband 3×3 Silicon Photonic Switch Using Thermo-Optic Phase Shifters and Multimode Interference Couplers. - Thuy Tran Thi Thanh; Duy Nguyen Thi Hang; Hien Nguyen Trung; Hung Nguyen Ngoc; Linh Ho Duc Tam; Minh Tuan Trinh; Nguyen Tan Hung; Cao Dung Truong (IEEE Access, 2026)