Patent ID: 6872012
Filing Date: 2005-03-29
Classification: G02B,H01S

Abstract:
1. An optical isolator module comprising a capillary to which an optical fiber whose end inclines has been fitted, an optical isolator provided on the light-incident side of the capillary and a transparent member provided on the light-incident side of the optical isolator; the optical isolator module being; set in a housing of a semiconductor module having a semiconductor element and a focusing lens; the light emitted from the semiconductor element and collected by the focusing lens being transmitted through the transparent member and optical isolator and made incident on the optical fiber end; and provided on the side opposite to the light-incident side of the capillary, with a hermetic bead which i) holds the optical fiber which extends from the capillary in the direction opposite to its light-incident side and whose bare fiber stands uncovered by removing a resin coat, and ii) is fitted in a hermetically sealable state into an opening made in a side wall of the housing of the semiconductor modules, wherein the bare fiber of the optical fiber extending from the capillary in the direction opposite to the light-incident side is coated with a metal, and the hermetic bead and the bare fiber of optical fiber are joined with solder to each other, with the hermetic bead and the capillary being spaced apart from each other, and wherein the capillary, a window frame member disposed on the light-incident side of the capillary and fitted with the transparent member, a cylindrical holder to which the capillary is fitted, and a cylindrical magnet provided between the cylindrical holder and the window frame member, form a hermetically sealed space, and optical component parts of the optical isolator are held in this hermetically sealed space.