A photonic device designed with an intermittent absorption profile along a waveguide.
The absorption profile is divided into low-absorption and high-absorption segments
that are distributed axially in order to decrease the maximum local temperature
in the device. The distribution of low-absorption segments can be controlled through
techniques such as proton implantation or selective-area quantum well intermixing.
The lengths of low-absorption and high-absorption segments can be adjusted to optimize
heat dissipation along the device length.