Laser diode package having an optical power monitoring function

摘要

A laser diode package having an optical power monitoring function includes a monitor diode (12) for monitoring an optical power of the light emitted from a laser diode (11). In the laser diode package, an optical member (15) has a projection window for advancing the light emitted from the laser diode (11) to a desired direction and a reflection surface (17) from which the light emitted from the laser diode (11) is reflected. The monitor diode (12) receives the light reflected from the reflection surface of the optical member in order to monitor an optical power of the light emitted from the laser diode (11). A slot (20) is installed on an area except for an optical path which is formed by the light projected via the projection window of the optical member, for shielding ambient light. Thus, the laser diode package having an optical power monitoring function prevents a mis-operation of the monitor diode (12) due to the ambient light. <IMAGE>