Method and system for integrated DWDM transmitters

A DWDM transmitter system, comprising:

• a support component, the support component including a temperature adjustment component;
• a silica-on-silicon substrate overlying the support component, the silica-on-silicon substrate including a silica layer and a silicon layer, the silica-on-silicon substrate corresponding to a substrate surface, the substrate surface including a first surface region and a second surface region, the first surface region and the second surface region not being coplanar;
• an optical multiplexer within the silica layer under the first surface region of the silica-on-silicon substrate, the optical multiplexer including a plurality of input waveguides and at least an output waveguide;
• one or more semiconductor InP laser array chips mounted on the second surface region of the silica-on-silicon substrate, each of the one or more laser array chips including two or more lasers, each of the two or more lasers being optically coupled to a corresponding one of the plurality of input waveguides;
• a plurality of micro heaters, each of the plurality of micro heaters being disposed adjacent to one of the lasers;
• an optical analyzer optically coupled to the output waveguide for measuring a center wavelength at the output waveguide;
• and
• a controller electrically coupled to the optical analyzer and the plurality of micro heaters for adjusting a temperature of the temperature adjustment component using information associated with the center wavelength.