Abstract

A drawback of multimode fiber (MMF) endoscopes is that imaging quality degrades substantially as the MMF is perturbed. We describe a method for improving the formation of a spot of light at the distal end of a perturbed MMF by attaching a partial reflector to the distal end of the MMF. The perturbation of the light reflected from the partial reflector is highly correlated with the perturbation of the light transmitted through the MMF, and exploiting this correlation enables formation of spots at the distal MMF end with higher power confinement.

© 2018 The Author(s)