Patent ID: 7086787

Claim:
A method of producing a jointing holder for an optical module for single-fiber bidirectional communication, the method comprising: providing a unitary structure comprising: an optical fiber-fixing portion for securely holding an optical fiber for transmitting multiwavelength light bidirectionally; a semiconductor laser-fixing portion for securely holding a semiconductor laser for emitting outgoing light; a photodiode-fixing portion for securely holding a photodiode for receiving incoming light; an optical path-forming space for optically coupling the optical fiber, the semiconductor laser and the photodiode; and in the optical path-forming space, an optical filter-fixing face for securely holding an optical filter for separating multiplexed wavelengths; wherein the optical filter-fixing face is slanted against the optical axis of the optical fiber; arranging the optical axis of the optical fiber and semiconductor laser to be aligned with each other, and arranging the photodiode to be perpendicular to the optical axis of the optical fiber, wherein the semiconductor laser-fixing portion comprises an inner face of a cylinder coaxial with the optical axis of the optical fiber, and the photodiode-fixing portion is adapted such that the photodiode is fixable at a place where the photodiode can receive light from the optical fiber wherein the light is bent at an angle of nearly 90° by the optical filter; providing the optical path-forming space with an optical path-forming hole for optically coupling the optical fiber and the semiconductor laser; forming a slanting groove that slants against the optical axis of the optical fiber by cutting between the photodiode-fixing portion and the optical path-forming hole such that the bottom face of the slanting groove is used as the optical filter-fixing face, and the optical path is secured.