Nonlinear metal-clad waveguide and its all-optical modulation optical switch realization device

Abstract

The invention discloses a nonlinear metal-clad waveguide, which comprises a metal coupling layer, a waveguide layer, and a substrate layer, the metal coupling layer is arranged above the waveguide layer, and the substrate layer is arranged on the waveguide layer below. The non-linear metal-clad waveguide and the all-optical modulation optical switch implementation device proposed by the present invention use the ultra-high sensitivity, high quality factor and field enhancement effect of the waveguide structure to reduce the laser threshold of the nonlinear material, thereby realizing the refractive index of the waveguide layer light intensity modulation, and the coupling efficiency of the guided mode is closely related to the refractive index of the waveguide layer, and its sensitivity is as high as 10 ‑5 , so through the adjustment of the light intensity, the complete coupling or non-coupling of the laser of a specific wavelength can be realized, thereby realizing the function of an optical switch. The excitation threshold of the traditional nonlinear optical device can be reduced by using the waveguide structure, and the switch of the single-frequency laser can be realized. A series of functions such as frequency selection of multi-frequency laser.

Description

technical field [0001] The invention relates to a nonlinear metal-clad waveguide and an all-optical modulation optical switch realization device thereof, and belongs to the technical fields of photon information technology and nonlinear optical device micromachining. Background technique [0002] The development of photonics is divided into two stages: microphotonics stage and nanophotonics stage. Among them, the technology in the stage of nanophotonics is the nanophotonic technology of "controlling light with light", but how to realize this technology is a big problem. Photons are not charged, so it is impossible to directly realize the mutual control between photons. Only by changing the parameters of the medium through the interaction between light and nonlinear medium can the "light control light" be realized indirectly. The all-optical modulation optical switch based on the principle of nonlinear optics is a photonic device that controls light by light. [0003] The d...

AI Technical Summary

Problems solved by technology

The invention is simple in operation and easy to realize. The optical switch structure is easy to prepare, low in cost, high in quality factor and low in switching power, and solves the problems of expensive all-optical modulation optical switch devices, cumbersome operation steps, and high switching power.

Images