APPLICATIONS OF WAVELENGTH-LOCKING USING DITHERING SIGNALS FOR MICRORING RESONATORS

摘要

A low-cost, robust method for automatically tuning a coupled resonator to match a wavelength of electromagnetic radiation emitted from an applied laser source. Dithering signals are used for automatic wavelength tuning and thermal stabilization of microring resonators. The disclosed method can be applied using low-speed analog and digital circuitry, to create a complete photonic interconnection network. The methods disclosed also automatically detect, measure, and correct for resonance shift.

主权项

1. A method for automatically tuning a coupled resonator to match a wavelength of electromagnetic radiation emitted from an applied laser source, comprising:
applying, by an electronic circuit, a dithering signal to the coupled resonator; measuring a modulated optical signal generated in response to the dithering signal; mixing the dithering signal and the modulated optical signal; filtering the mixed signal to obtain an error signal; and tuning the coupled resonator to match the wavelength based at least in part on the error signal.