“…In various optical applications such as interferometers [4][5][6], chromatic dispersion [7,8], and optical communications [9], a beam splitter [10][11][12] plays a significant role in separating light polarization, wavelength, and power, due to their ability to split an incoming light beam into two or more separate beams. Various methods and structures, including photonic crystals [13][14][15], wave plates [16,17], and metasurface [3,[18][19][20][21], are used to implement beam splitters. However, conventional optical components used to create beam splitters, are bulky and heavy, which leads to problems in integrating them into miniature optical circuits [22].…”