| 摘要 |
PURPOSE:To reduce an axis shift due to solder creep characteristics by using magnetic bodies for a cap and a holder. CONSTITUTION:A 1st optical fiber 15 for coupling the projection photoelectric power from a semiconductor laser 4 with an optical fiber 15 optically, a 1st holder 9, and a 2nd holder 20 are fixed with solder after their optical axes are adjusted. At this time, the 1st holder 19 is attracted to the cap 18 formed of a magnetic material with the attractive force of a permanent magnet 8 as a component of an optical isolator incorporated in the 1st holder 19. Further, the 2nd holder 20 is also attracted to the 1st holder i formed of a magnetic material as well. Consequently, the quantity of the axis shift with time due to the solder creep characteristics is reducible. |
