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Device for displacing tip of optical fiber along two mutually orthogonal axial lines

PURPOSE: To prevent the tip of an optical fiber from being rotated by arranging thin blade parts of a deformable base body composed of a single member along the faces of a parallel hexahedron, fixing one end of one diagonal of the hexahedron to a frame, fixing the other end to a concentrical optical fiber, and setting up both the ends of the other diagonal as the fulcrums of displacement means. CONSTITUTION: The cross section of a deformable base body 10A formed as a single member has four side faces, a square is formed by respective side faces each of which is composed of a thin single blade 14A, one end of the vertical diagonal of the square is composed of a pedestal 11A, the other end is composed of a supporting block 12A, and the tips of the horizontal diagonal are respectively composed of operation blocks 13A. Each operation block 13A receives thrust in the arrow F direction by an optional and suitable displacement means. Consequently an optical fiber 6 arranged in a V groove 5 of the block 12A is not rotated against an initial polarizing face.