Abstract: We theoretically investigate the polarization effect of three-dimensional (3-D) microfiber/nanofiber (MNF) loop resonators and knot resonators. Due to the lack of circular symmetry, the ...

Abstract: Non-linear effects of erbium-doped fiber amplifier (EDFA) gain have been significant factors in deteriorating the performance of active fiber loop ring-down spectroscopy (FLRDS). The ...