Patent ID: 7505658

Claim:
An optical fiber device, comprising a positioning/fixing substrate having a fiber guide and an optical fiber pressing spring formed in a predetermined position on the fiber guide, and an optical fiber including an end part having at least one marker groove formed by cutting an outer periphery of a cladding of the optical fiber, the marker groove being formed on a position spaced at a predetermined distance from an end face of the optical fiber in an axial direction, wherein the fiber guide is a groove having two side wall surfaces perpendicular to a plane of the positioning/fixing substrate and supporting a side of the optical fiber by an inner wall surface, the optical fiber pressing spring includes a plate spring formed on one of the side wall surfaces in the fiber guide and an edge formed on the plate spring on a side toward a center of the fiber guide, the plate spring presses the edge to the side of the optical fiber with a fulcrum on the side wall surface, and the end part of the optical fiber is positioned in an axial direction relative to the positioning/fixing substrate by aligning the marker groove formed on the end part of the optical fiber with the edge of the optical fiber pressing spring.