| 摘要 |
PURPOSE:To perform high-accuracy positioning by forming the tip part of an optical fiber so that it deforms axially and plastically, causing the tip to deform plastically by applying an external force in the axial direction of the sleeve, and making adjustments while measuring the quantity of light. CONSTITUTION:The tip part of the optical fiber 11 is inserted into the plastically deformable sleeve 12 fixed to the cap 9 of a semiconductor laser 1 and the force is applied to the plastically deformable sleeve 12, which deforms plastically to position the tip surface of the optical fiber 11 in an X, a Y, and a Z direction as to a laser diode pellet 4. Namely, the quantity of a laser beam LB which is emitted by the laser diode pellet 4, passed through the optical fiber 11, and projected from its projection end surface is measured by a photodetector 16 and the position is adjusted in the X, Y, and Z directions so that the measured value is maximum. Consequently, the high-accuracy positioning is so carried out to obtain the highest optical coupling efficiency. |
