Patent ID: 6920276

Claim:
An optical fiber assembly having a hermetic seal portion for the use of a parallel optical transmission module comprising: an optical fiber assembly including a metal-coated portion where a portion exposed by peeling off resin coating by a prescribed length at a distance from end portions thereof is coated with metal; a hermetic connection component having: a feedthrough hole which extends from one end of the component for covering at least a part of the metal-coated portion of the optical fiber assembly; a housing groove to be open in an uncovered state which leads to the feedthrough hole and extends to the other end of the component for containing the remainder of the metal coated portion of the optical fiber assembly; and an upward opening formed so as to slant in a direction coming close to the one end of the component at the boundary between the feedthrough hole and the housing groove, wherein the component is made of metal and has a length equal to the sum of the length of the metal-coated portion of the optical fiber assembly plus the required length of the resin-coated portions leading to both sides of the metal-coated portion; a brazed portion where at least the metal-coated portion near the upward opening within the feedthrough hole is hermetically sealed to the hermetic connection component by brazing through the upward opening of the hermetic connection component; and an adhesive-fixed portion where at least parts of the resin-coated portion as well as the metal-coated portion exposed on the housing groove are fixed with an adhesive to the hermetic connection component.