The micro-optic resonators confines light in a small volume resonating cavity and sustains a high-quality factor. Among all micro resonator morphologies, the micro-optic bottle resonator has a 3-D mode confinement geometry. In this thesis, MBR is profiled by azimuthal sculpting of a pair of rings along the glass whisker's perimeter. The structure is examined using a numerical solver optimized for the cylindrical symmetry of such resonators. The modal space and field profiles are computed as a function of ring spacing and demonstrate that multiple glass region confined states are available and can generally be thought of as Whispering Gallery Modes. Additional computational results are presented when the structure is configured as a sensor, suitable for measuring a specific constituent such as index of refraction, temperatures, gases, and chemicals. Attempts were underway to fabricate the MBR's geometry, but the work has remained incomplete due to COVID-19.