OPTICAL AMPLIFIER INTEGRATED SUPER LUMINESCENT DIODE AND EXTERNAL CAVITY LASER USING THIS

摘要

The present invention relates to a super luminescent diode, a low threshold current is low power consumption, low It relates to a super luminescent diode for the light source of an external resonator type laser with a high output in the current operation. ; to this end, the super luminescent diode are integrated reflection type light amplifier according to an embodiment of the present invention, SLD (Super Luminescent Diode) region and, amplifying the light generated from the SLD region a substrate having a SOA (Semiconductor Optical Amplifier) region for; It extends over the optical waveguide of the SLD region and the SOA region on the substrate, and a buried heterostructure (Buried Heterostructure) structure including an active layer having a tapered shape from the SOA region; It is formed around the active layer, and blocking the flow of current to other than the active layer, a different conductivity type current blocking layer of the laminated semiconductor layer; And an optical waveguide and a cladding layer formed on the current blocking layer. The present invention as described above, and a low threshold current and single integration of the SOA to the SLD is used in the PLC-ECL output is the advantage that can provide two times higher than the conventional light source SLD.