A microchip may include an optical signal routing system. The optical routing
system
may include a distribution waveguide coupled to a light source and signaling waveguides
interconnecting source and destination locations. A directional coupler may be
used to couple and modulate light from the distribution waveguide to a signaling
waveguide at a source location. A photodetector may be used to convert light signals
from the source location into electrical signals at the destination.
