Coding metasurfaces have found many applications in free space optics. but have not been used for integrated photonic applications. This can partly be attributed to the lack of implements to usefully implement such a framework in practice. The advent of low-loss phase change materials such as Sb2S3 has changed this by enabling the implementation of reprogrammable integrated metasurfaces. https://pyrodresoners.shop/product-category/vtx-and-vrx-accessories/