Patent ID: 8285151

Claim:
An integrated DWDM transmitter apparatus, the apparatus comprising: a first support component; a silica-on-silicon substrate overlying the first support component, the silica-on-silicon substrate including a silica layer overlying a silicon layer, a coefficient of thermal expansion of the first support component being substantially matched to a coefficient of thermal expansion of the silicon layer; an optical multiplexer within the silica layer, the optical multiplexer including a plurality of input waveguides and at least an output waveguide; a second support component attached to a side surface of the first support component; and one or more semiconductor laser array chips overlying the second support component, a coefficient of thermal expansion of the one or more semiconductor chips being substantially matched to a coefficient of thermal expansion of the second support component, each of the one or more laser array chips including multiple lasers, each of the multiple lasers being optically coupled to a corresponding one of the plurality of input waveguides.