Patent ID: 7182975

Claim:
A method of applying a moisture barrier seal to a fiber optic coil, comprising: mounting a fiber optic coil in a vacuum deposition chamber, so as to expose a large exterior surface area of the fiber optic coil to an interior portion of the deposition chamber; reducing air pressure within the deposition chamber to a value less than ambient pressure outside of the deposition chamber, wherein the air pressure is reduced by removing at least some of the air from within the deposition chamber with a vacuum pump; introducing, via a vapor generator, a vapor form of a parylene material into the deposition chamber, wherein the vapor generator heats a predetermined quantity of the parylene material until the parylene material transforms into the vapor form of the parylene material, and wherein the vapor form of the parylene material changes into a solid state upon contact with the fiber optic coil, so as to form a conformal coat on the fiber optic coil; and transferring, via the vacuum pump, air into the deposition chamber until the air pressure within the deposition chamber returns to the ambient pressure.