Investigating the optical spectrum of ring micro-resonators by adding an amplifier to the ring

In this article, by using COMSOL Multiphysics software, by adding an amplifier to the structure of ring resonators in an arbitrary size structure of ring that has a frequency line in telecommunication windows, a resonator wavelength of 1555 nm has been achieved. It is strengthened by changing the size of the rings in sequential structures in a resonator array and changing the place of the amplifier in the structure of the rings, an optimal structure has been achieved, which has reached an amplification of about 40 dB. The amplifier that is added to this structure is suggested to be impurity amplifiers, such as doping a part of the ring by erbium atoms or semiconductor amplifiers