The present invention provides a non-physical contact visual fault locator coupler that functions with fewer components and reduces handling, and without ferrule-to-ferrule contact, thereby reducing endface wear degradation and other problems. The problem occurs most pronouncedly between sets of adjacent memory cells that have been programmed at different times. The polyamic acid droplet is then processed to form a polyamic acid bead, such as by extraction of solvent to concentrate the polyamic acid or by partial chemical imidization of the polyamic acid.