a broadband GO–polymer waveguide polarizer with a high PDL of ≈40 dB was demonstrated where the GO films were introduced onto an SU8 polymer waveguide using drop-casting methods The GO film thickness

A broadband GO-polymer waveguide polarizer, exhibiting a high polarization-dependent loss (PDL) of approximately 40 dB, was successfully fabricated. This was achieved by depositing GO films onto an SU8 polymer waveguide via drop-casting techniques. The thickness of each GO film deposited during the drop-casting process was around 0.5 µm, with a drop coating diameter of approximately 1.3 mm. However, the aforementioned deposition parameters were not optimal for achieving precise control over the placement, thickness, and length of the GO films