Preliminary experimental analysis of birefringence in a 5-tube NANF. - Silvia Zampato; Austin Taranta; Gianluca Guerra; Seyed Mohammad Abokhamis Mousavi; Thomas W. Kelly; Hesham Sakr; Konstantin Vidiajev; Luca Schenato 002; Andrea Galtarossa; Marco Santagiustina; Francesco Poletti; Luca Palmieri 001 (OFC, 2025)