Patent ID: 8121167

Claim:
A dual wavelength laser device adapted for optical communication, comprising: a cap comprising a cap body and a lens embedded on top of the cap body; a header including a base plate formed an accommodating space with the cap body while the header and the cap form a TO-CAN type package; a first submount arranged on a top surface of the base plate, the top surface facing the lens; a first laser chip arranged on the first submount and emitting a first laser beam toward the lens; and a second laser chip directly arranged on the top surface of the base plate and emitting a second laser beam toward the lens, wherein since the first laser chip is lifted by the first submount, the heights of locations of the first laser chip and the second laser chip are different, such that the second laser chip can be a little overlapped with the first laser chip along a laser beam emitting direction and the second laser beam of the second laser chip can be closer to the first laser beam of the first laser chip.