Accession Number : ADD013628

Title :   Hermetic High Pressure Fiber Optic Bulkhead Penetrator.

Descriptive Note : Patent, Filed 19 Nov 81, patented 28 Jul 87,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Cowen, Steven J

Report Date : 28 Jul 1987

Pagination or Media Count : 5

Abstract : A method and apparatus of transmitting optical data through a wall separating a first fiber in a first medium from a second fiber in a higher pressure medium assures optical information transfer. A bore is provided in the wall having an inwardly extending annularly rim. A cylindrically-shaped optical glass plug is sized to fit within the bore and configured to abut the annular rim and a hard solder seal, a ceramic seal or a fused frit is disposed between the bore and the glass plug to hermetically seal one side of the wall from the other. A quarter-pitch graded-index of refraction rod lens contracts opposite sides of the optical glass plug and the first and second optical fiber are held in an aligned relationship with the rod lenses and glass plug to assure bidirectional transmission of optical data. The apparatus and method assure reliable optical transmission with long term stabilities in high pressure differentials. Patents

Descriptors :   *FIBER OPTICS, *INFORMATION TRANSFER, *LENSES, *LIGHT TRANSMISSION, *OPTICAL GLASS, *PATENTS, *PLUGS, *SOLDERING, *TRANSMITTANCE, CERAMIC MATERIALS, CONTRACTS, DIFFERENTIALS(MECHANICAL), FIBERS, GLASS, HIGH PRESSURE, OPTICAL DATA, REFRACTION, RELIABILITY, RODS, SEALS(STOPPERS), STABILITY, TRANSMITTING

Subject Categories : Marine Engineering
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE