| 摘要 |
<p>PURPOSE:To reduce the number of parts and the adjusting places of a coupling device by executing a position adjustment of a comparatively large spherical lens which is used for an airtight sealing window, too, through a supporting member of a ferrule to which the optical fiber is installed. CONSTITUTION:A comparatively large spherical lens 44 whose optical axis coincides with a laser beam and which is used for an airtight sealing window, too is provided on a spherical lens holding member 43 for sealing airtightly a semiconductor laser element chip 1. The horizontal direction adjustment of the optical axis of this lens 44 and the optical axis of an optical fiber strand 14 installed to a ferrule 46 is executed by a relative movement to a ferrule supporting member 45 of the ferrule 46, and the vertical direction adjustment is executed by a movement running along a base 42 of the member 45. According to this constitution, a window of an airtight sealing part becomes unnecessary, also the adjustment is executed by the member 45 only, and the number of parts and the adjusting places of a semiconductor laser coupling device are reduced.</p> |
