  Disordered transverse Anderson localizing optical fibers have shown great
promise in various applications from image transport to random lasing. Their
success is due to their novel waveguiding behavior, which is enabled by the
transverse Anderson localization of light. The strong transverse scattering
from the transversely disordered refractive index structure results in
transversely confined modes that can freely propagate in the longitudinal
direction. Therefore, these fibers behave like large-core highly multimode
optical fibers, with the peculiar property that most modes are highly
localized. This property makes them ideal for such applications as image
transport and spatial beam multiplexing. In this review paper, we will explore
some of the recent advances in these fibers, especially those related to the
material structure and fabrication methods.
