Abstract: The present invention provides an assembly that may be used to clean the external surfaces of fiber optic cable. The assembly includes a baffle housing, a plasma source, a cable guide, and brackets to position the baffle and plasma source. The baffle housing defines a plasma inlet, an outlet, a cable passageway, and a chamber, wherein the chamber is in fluid communication with the plasma inlet, the outlet, and the cable passageway. The plasma source is disposed so as to emit a plasma gas into the housing through the plasma inlet, into the chamber, and out of the housing through the outlet. The chamber is shaped so as to generate turbidity in the plasma gas therein thus the plasma gas contacts all surfaces of a fiber optic cable in the chamber. The assembly uses a plasma source that provides an air plasma gas at atmospheric pressure.

Abstract: A method is provided for stabilizing an electro-optic substrate employed in a waveguide device. The method comprises cleaning a surface of the substrate, and exposing the device to a reactive oxide to passivate the surface. A layer of sealant is deposited on the substrate in a vacuum to seal the surface.