Investigating the coupling efficiency and attenuation of guided waves in D-shaped optical fibers. - Soman, Rohan; Rahman, Waliur; Filipkowski, Adam; Anuszkiewicz, Alicja; Kasztelanic, Rafal; Osuch, Tomasz; Buczynski, Ryszard; Peters, Kara (Measurement (02632241), 2026)