| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical fiber provided with a metal coating layer of variable thickness. SOLUTION: This manufacturing method comprises a step for preparing a shadow mask 32 to specify an optical fiber 30 to be coated and a coating pattern, a step for arranging the shadow mask 32 between a metal source 31 and the fiber 30 to deposit coating metal from the metal source 31 onto the optical fiber 30, and a step for activating the metal source 31 to emit the coating metal and for moving the shadow mask 32 with respect to the optical fiber 30. Travel, onto the optical fiber 30, of the metal of the metal source 31 is controlled therein. |
