Integrated Photonic Optical Circulators

This SBIR Phase II program builds upon the results of Phase I, including record measured results from fabricated devices, to develop novel integrated optical circulator and isolator devices based on non-reciprocal phase shift (NRPS) in thin layers of magneto-optic (MO) materials integrated within silicon and silicon nitride optical waveguides. The program utilizes innovative microresonator (MR) and Mach-Zehnder interferometer (MZI) based structures, with a novel tunable magnetic field from an integrated metal microstrip, creating wavelength tunable, switchable, multi-port circulators with high isolation and low loss, to support CW, RF Photonic and high speed digital photonic signals.Photonic integrated circuit (PIC) devices including optical circulators and isolators will be developed during Phase II.