On-chip non-local metasurfaces and methods for narrowband light extraction and phase modulation

Abstract

The application provides a kind of on-chip non-local superstructure based on guided mode resonance and the method for narrow-band light extraction and phase control, it is related to micro-nano photonics and integrated photonics technical field.The application realizes narrow-band, wavelength-selective on-chip light extraction in the visible light range by regulating the array period of nanostructure array layer;The wavelength of guided mode resonance is determined by the array period of nanostructure array layer and guided mode dispersion, and can be flexibly tuned;The geometric phase is encoded by the rotation angle of nanostructure, the phase control and wavefront shaping of extracted light are realized while keeping the narrow-band resonance characteristics;The wavefront control can further realize the function of narrow-band focusing;The proposed on-chip non-local superstructure has the characteristics of high quality factor, narrow-band selectivity and phase encodable, and is expected to be applied in wavelength multiplexing, optical sensing and on-chip display in photonic integrated circuits, providing an effective way for high temporal coherence on-chip light field control.

Images