Polarization-Independent Tuning of Widely Tunable Vertically Coupled Microring Resonator Using Thermo-Optic Effect

摘要

The polarization independent tuning of the resonant wavelength of a vertically coupled microring resonator (VCMRR) filter is demonstrated using the thermo-optic effect in a polymer ring core. The polarization dependence of the tunability of a TO-tunable microring resonator was reduced to 3% using a new polymer with a high index contrast and a small birefringence for the ring core. Approximately 12.9nm tuning was successfully demonstrated.