This document characterizes a ring resonator by measuring its transmission spectrum and calculating key parameters like finesse, Q-factor, FWHM and FSR. It finds that increasing the gap between the bus and ring waveguides from 300nm to 400nm improves the resonance, reducing the FWHM from 0.55nm to 0.475nm and loss from 18.4dB/cm to 15.84dB/cm. However, measuring the drop port transmission was challenging due to imperfections and dust on the small micro-ring structure.