Patent ID: 8195045
Filing Date: 2012-06-05
Classification: G01R,H01S

Abstract:
1. An optical transmission module comprising: a semiconductor light emitting element for emitting laser light; a first driving unit for providing a first driving current to the semiconductor light emitting element; a switching unit connected between the semiconductor light emitting element and the first driving unit; and a package for accommodating the semiconductor light emitting element, the first driving unit, and the switching unit, the switching unit comprising a first input for receiving the first driving current outputted from at least from the first driving unit, a second input for receiving a second driving current for performing a test of the semiconductor light emitting element, a third input for receiving a measuring signal for determining a defect of the semiconductor light emitting element, and an output connected to the semiconductor light emitting element, and the switching unit switching a Connection of at least one of the first input, the second input and the third input to the output, the switching unit connecting the third input to the output in determining the defect of the semiconductor light emitting element.