A tunable ring resonator (RR) formed from waveguides with an electro-optic polymer cladding is proposed with emphasis on the trade-off between the tuning voltage and ring radius. The ring resonator circuit combines the advantages of and polymer technologies. The advantages of this hybrid ring design over previously proposed tunable silicon rings include an increased switching speed, from , single-polarity instead of dual-polarity voltage tuning and a voltage-independent quality factor. The hybrid design also displays a greater free spectral range ( instead of ) and a wider tuning range ( instead of ) and is further compatible with silicon devices. Moreover, the device has a high quality factor of .