Tool Used: OptSim Circuit
A ring resonator is an important component in silicon photonics. It is made up of an optical waveguide in a loop fashion with coupling mechanism as shown in the schematic of Figure 1. The mode-locked laser acts as a wideband source and has an extremely narrow pulse-width. As per the theory of ring resonators [1], the ring is in resonance when wavelength of the light fits integer number of times in the optical length of the ring. The resonance wavelength is given by