Patent ID: 7308012
Filing Date: 2007-12-11
Classification: G02B,H01S

Abstract:
1. A semiconductor laser module, comprising a first semiconductor optical element, a second semiconductor optical element, and a lens, wherein: the first semiconductor optical element is for outputting a light signal; the second semiconductor optical element is for performing signal processing on the light signal outputted from the firs semiconductor optical element, said first and second optical elements mounted on element holding sections; the lens is for correcting a relation between optical axes of the first semiconductor optical element and the second semiconductor optical element so as to lens-couple the optical axes, said lens mounted on a lens holder disposed between said first and second semiconductor optical elements, said lens holder comprising a pedestal having fork-shaped holding sections, fixing sections for fixing said pedestal to a common element carrier, and a stress-suppressing section disposed between said holding sections and said fixing sections to prevent welding stress, the stress-suppressing section including a notch between the fixing section and the holding section; and the first semiconductor optical element, the second semiconductor optical element and the lens are mounted on the common element carrier; wherein the stress-suppressing section reduces tensile stress generated when the lens holder is welded to the common element carrier so that the stress does not propagate into the fork-shaped holding sections, to thereby prevent the fork-shaped holding sections from being deformed.