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Testing and using the fiber patch cord. (A) The light beam created from an unpolished fiber. Excess epoxy is covering the ferrule and preventing light to enter the patch cord from the laser coupler. (B) The light beam created from a well polished patch cord has a uniform light intensity and crisp circular shape. (C) The bare fiber end of the patch cord is placed in a micromanipulator that is positioned on an electrophysiology rig.
