Spun High Birefringence Bismuth/Erbium Co-Doped Photonic Crystal Fibre with Broadband Polarized Emission

Spun Hi-Bi bismuth/erbium co-doped photonic optical fibre (SHB-BEPCF) has been fabricated using preform stacking and draw tower self-pressurization. Results demonstrate broadband and partially elliptical polarized NIR emission under un-polarized 830 nm pumping spanning Δλ ~ 520 nm centred at 1430 nm.