Our group made four presentations including one keynote speech in  ICISCT 2022 sponsored by IEEE on September 28-30, 2022 at Tashkent, Uzbekistan. the titles of the presentations are: “3D printed hollow-core polymer optical fiber with six-pointed star cladding for the light guidance in the near-IR regime” presented by Mahmudur Rahman “Elliptical cladding elements in negative curvature…