Optical module

Abstract

Disclosed is an optical module, including a mount, a laser diode driver and a sub-mount installed on the mount, a plurality of laser diodes disposed on the sub-mount, an electrical signal interface disposed on the mount, and a circuit connecting the electrical signal interface and signal input/output terminals of the laser diode driver and connecting the signal input/output terminals of the laser diode driver to the laser diodes through a terminal of the sub-mount. The front of the laser diode is inward recessed at a specific distance from the front of the sub-mount and thus stepwise disposed with respect to an optical signal interface including the front of the sub-mount. A front groove is formed in the direction in which a laser travels at a location that belongs to a surface of the sub-mount to which the bottom of the laser diode is attached and that corresponds to a forward path in which the laser is forward emitted from the front of the laser diode. In accordance with the present invention, the plurality of lasers is disposed close to a single package to form a structure not using a lens array, but forms a simplication, small-size and integration package type structure. Accordingly, a production cost can be reduced and an adverse influence on the edge of the mount when the optical signal interface has a step with respect to the side of the mount in order to protect the laser diode can be prevented.

Dependencies are inferred from the claim text.