Soliton all-optical diode based on waveguide array and realization method thereof

Abstract

The invention discloses a soliton all-optical diode based on a waveguide array and a realization method thereof. The soliton all-optical diode comprises an encapsulation shell, an artificial gauge field arranged in the encapsulation shell and used for regulating an optical path, and the nonlinear waveguide array embedded in the artificial gauge field and used for inducing solitons; the artificialgauge field comprises a magnetic field and other effect fields with a magnetic field effect. The realization method includes the steps that the waveguide array is embedded in the artificial gauge field, and the artificial gauge field is adopted for adding a phase related to the direction of the optical path to signal light entering the waveguide array to realize unidirectional transmission of theoptical path; the nonlinearity and periodicity of the waveguide array are utilized for inducing the unidirectionally transmitted signal light entering the waveguide array to become discrete solitons,and the optical field shape of the signal light being unidirectionally transmitted in the waveguide array is kept unchanged. The all-optical diode with high fidelity, high degree of freedom and high tunability is provided, high-quality optical information processing and optical communication are realized, and the all-optical diode is suitable for optical communication products and optical information processors which require high optical signal quality.

Description

technical field [0001] The invention relates to the technical field of all-optical non-reciprocal optical transmission, in particular to a soliton all-optical diode based on a waveguide array and a realization method thereof. Background technique [0002] Compared with signal transmission and data processing using electricity as an information carrier, light as an information carrier can provide greater communication broadband and high-speed information processing capabilities. Optical communication is becoming the mainstream of research in the field of communication. Analogous to the electronic diode as an important device in electronic communication, in optical communication, the all-optical diode is one of the basic devices that constitute all-optical signal processing. All-optical diodes can overcome the reversibility of light and realize the non-reciprocal transmission of light in the optical system, that is, realize the unidirectional transmission of light in the optic...

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Problems solved by technology

Recently, such as literature 1 [M.Hafezi, E.A.Demler, M.D.Lukin and J.M.Taylor, Robust optical delay lines with topological protection, Nature Phys.7(2011) 907.] and literature 2 [L.Lu, J.D.Joannopoulosand M. Topological hotonics, Nature Photonics 8(2014) 82.], the method based on artificial gauge field coupling to realize the one-way transmission of discrete solitons in linear mode has been successful, but its diode characteristics are solidified on the material, which is not convenient According to the actual situation, it is adjusted according to the actual use, but the nonlinear discrete optical solitons with greater control characteristics have not been studied, so how to realize the one-way transmission of discrete solitons in the nonlinear mode is a topic worthy of research

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