| 摘要 |
PURPOSE:To shorten aligning time by rough aligning by roughly aligning a double refraction axis by manual operation while observing the end faces of optical fiber cores by a microscope. CONSTITUTION:A butting rod 50 is lifted to the upper stage. The optical fiber cores 10 are set up on prescribed positions and pressed by fiber clamps 26 and sheath clamps 30. Then, the right and left optical fibers 10 are advanced and abutted upon the abutting rod 50 to determine the interval between the fiber cores 10 at the start of fusing. Then, the abutting rod 50 is descended up to the lower stage. Fine electrostatic discharge is instantaneously executed to expose the end faces of the optical fiber cores 10 to high heat so that stress applying parts 18 are easily observed. Then the rod 50 is lifted up to the intermediate stage. The optical fiber cores 10 are clamped by rotary clamps 39, and while observing the stress applying parts 18 by the microscope 62, a dial 46 is manually rotated to execute rough adjustment of the parts 18. Then, the rod 50 is descended up to the lower stage. Optical fibers 12 are adjusted in the Z, X and Y directions and then the theta axis is automatically centered to execute discharge fusion. Since the automatic adjustment is executed after the rough adjustment, the adjusting time can be shortened. |
