Thuy, Bui, 		Ngoc, Dang, AND 		Thanh, Le.
" On-Chip All-Optical Haar Transform Based  on A 4x4 MMI Coupler Cascaded with a 2x2 MMI Coupler  for Image Compression" <em>VNU Journal of Science: Computer Science and Communication Engineering</em> [Online], Volume 39 Number 2 (16 December 2022)