Optical fiber-space optical communication signal conversion method based on chip integrated optical path

Abstract

The invention discloses an optical fiber-space optical communication signal conversion method based on a chip integrated optical path, which realizes direct conversion between an optical fiber communication signal and a free space optical communication signal on the premise of not using a light source and a detector. The two-dimensional layered material covering the surface of the transmission waveguide is irradiated to generate free carriers, the refractive index of the transmission waveguide is changed, and optical fiber communication carrier waves are modulated, so that conversion from a free space optical communication signal to an optical fiber communication signal is realized; and on the other hand, the conversion from the optical fiber communication signal to the free space optical communication signal is realized through the non-linear wavelength conversion in the high non-linear waveguide and the grating coupler output mode. The optical direct connection link of the optical fiber communication network and the free space optical communication network is opened, the method is feasible, the structure is simple, implementation is easy, and a solid foundation is laid for the machine-fixed interconnection all-optical communication network.

Description

technical field [0001] The invention belongs to the interdisciplinary field of integrated optics, nonlinear optics, semiconductor physics, optical fiber communication and free-space optical communication, and specifically refers to an optical fiber communication that does not require a detector and a light source through the photoelectric effect and optical nonlinear effect of a chip integrated optical circuit Signal-to-free space optical communication signal conversion method, in particular to a fiber-to-space optical communication signal conversion method, system and storage medium based on a chip integrated optical circuit. Background technique [0002] Compared with traditional discrete device free-space optical circuits and all-fiber optical circuits, chip integrated optical circuits have many advantages, such as small size, low power consumption, stable performance, high integration, mass production, and optoelectronic integration. It is the preferred technical solutio...

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Problems solved by technology

[0004] Based on the problems of the prior art, the technical problem to be solved by the present invention is how to irradiate the two-dimensional layered material covering the upper surface of the transmission waveguide (or directly illuminate the upper surface of the waveguide) by the photoelectric effect (or two-photon absorption) of the free-space optical communication signal. Effect) to generate free carriers and modulate the refractive index of the transmission waveguide to copy the communication signal to the optical fiber communication carrier; and how to copy the optical fiber communication signal to the free space optical communication carrier through the nonlinear effect in the highly nonlinear waveguide and pass it through the grating Coupler realizes signal output of free space optical communication

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