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AssigneeHitachi, Ltd.
InventorsTakeshi Kato, Koji Yoshida, Toshinori Hirataka, Toshiaki Ishii, Kazuyuki Fukuda, Tadaaki Ishikawa, Toshimasa Miura, Tsutomu Kono, Kimio Tatsuno
Estimating the term…
The present invention is to reduce the package cost and secure the high reliability in an optical module having an optical device and an optical fiber. In the case where the optical module is constituted by use of a pre-molded plastic package, a molding resin is flown parallely with the optical axis direction of the optical fiber on which the plastic package is formed by injection molding. Further, in the case where the plastic package is formed by the comprehensive molding, the flowing direction of resin is parallel with the optical axis direction of the optical fiber to be installed. In the case where a resin case is used, the package exhibits the high rigidity and low thermal expansion properties in connection with the flowing direction of resin, thus reducing the external stress and thermal stress applied to the optical fiber. Accordingly, the high reliability is secured. In the case of the comprehensive molding, the molding pressure applied to the optical fiber is reduced. Therefore, the high reliability is secured.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, wherein the direction along an optical axis of said optical fiber, is the direction of a high elastic modulus in the resin material at a main portion along at least said optical axis of said optical fiber in said resin case member.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, wherein the direction along an optical axis of said optical fiber, is the direction of a low coefficient of thermal expansion in the resin material at a main portion along at least said optical axis of said optical fiber of said resin case member.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, a main flowing direction of the resin being substantially parallel with the optical axis of said optical fiber.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, wherein at a main portion along at least an optical axis of said optical fiber in said resin case member, the orientation of a molecular chain of the resin is substantially parallel with the optical axis of said optical fiber.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, wherein said resin case member is formed of a thermoplastic resin, and the direction along an optical axis of said optical fiber, is the direction of a high elastic modulus in the resin material at a main portion along at least the optical axis of said optical fiber of said resin case member.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, wherein said resin case member is formed of a thermoplastic resin, and the direction along an optical axis of said optical fiber is the direction of a low thermal expansion coefficient in the resin material of a main portion along at least the optical axis of said optical fiber in said resin case member.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, wherein said resin case is formed of a thermoplastic resin, and when the resin case is formed, the resin case is molded so that a main flowing direction of the resin is substantially parallel with an optical axis of said optical fiber.
An optical module comprising an optical device, an optical fiber optically coupled to said optical device, and a resin case member having at least said optical device and said optical fiber mounted thereon, wherein at a main portion along at least an optical axis of said optical fiber in said resin case member, an orientation of a molecular chain of the resin is substantially parallel with the optical axis of said optical fiber.
An optical module comprising an optical device, and an optical fiber optically coupled to said optical device, wherein a main flowing direction of the resin is substantially parallel with an optical axis of said optical fiber to mold the resin, and then said resin is solidified to package said optical device and at least a part of said optical fiber.
A method for manufacturing an optical module comprising an optical device and an optical fiber optically coupled to said optical device, comprising the steps of:
A method for manufacturing an optical module comprising the steps of:
An optical communication apparatus comprising at least an optical module and an assembly substrate on which said optical module is mounted, said optical module having at least an optical device, an optical fiber optically coupled to said optical device, and a package encasing said optical device and at least a part of said optical fiber, said package being a package molded by flowing a resin substantially parallely with the optical axis of said optical fiber.
An optical communication apparatus comprising at least an optical module and an assembly substrate on which said optical module is mounted, said optical module having at least an optical device, an optical fiber optically coupled to said optical device, and a package encasing therein said optical device and at least a part of said optical fiber, the direction of along an optical axis of said optical fiber being the direction of high elastic modulus in the resin material at a main portion along at least the optical axis of said optical fiber in said package.
An optical communication apparatus comprising at least an optical module and an assembly substrate on which said optical module is mounted, said optical module having at least an optical device, an optical fiber optically coupled to said optical device, and a package encasing therein said optical device and at least a part of said optical fiber, the direction of along an optical axis of said optical fiber being the direction of a low thermal expansion coefficient in the resin material at a main portion along at least the optical axis of at least said optical fiber in said package.
An optical communication apparatus comprising at least an optical module and an assembly substrate on which said optical module is mounted, said optical module having at least an optical device, an optical fiber optically coupled to said optical device, and a package encasing therein said optical device and at least a part of said optical fiber, the direction of along the optical axis of said optical fiber being the direction of orientation of a molecular chain in the resin material at a main portion along at least said optical axis of at least said optical fiber in said package.
Dependencies are inferred from the claim text.