Temperature-insensitive silicon-based arrayed waveguide grating structure wavelength division multiplexer

Abstract

A temperature-insensitive silicon-based arrayed waveguide grating structure wavelength division multiplexer comprises an arrayed silicon waveguide area, two ends of the arrayed silicon waveguide areaare connected with a first free transmission area and a second free transmission area in a coupled mode respectively, and the input end of the first free transmission area is connected with an input silicon waveguide in a coupled mode. The output end of the second free transmission area is connected with nine parallel output silicon waveguides in parallel in the coupling mode, and the input silicon waveguides and the output silicon waveguides adopt a temperature insensitive structure with a positive thermo-optical coefficient and a negative thermo-optical coefficient counteracting each other.According to the invention, a passive solution is adopted, the temperature insensitive characteristic of the silicon-based waveguide is achieved through the temperature insensitive structure with thepositive thermo-optical coefficient and the negative thermo-optical coefficient counteracting each other, and application of the silicon-based arrayed waveguide grating structure wavelength division multiplexer is further expanded.

Description

technical field [0001] The invention belongs to the field of optical communication and optical integrated waveguide technology, and in particular relates to a temperature-insensitive silicon-based array waveguide grating structure wavelength division multiplexer. Background technique [0002] In the application of optical communication links, the main function of the wavelength division multiplexing device is to expand the optical communication bandwidth and make full use of the fiber bandwidth. The wavelength division multiplexing device based on the silicon-based arrayed waveguide grating structure has a high degree of integration, which facilitates the miniaturization of link devices and integration. [0003] However, the sensitivity of silicon-based materials to temperature limits the further application of wavelength division multiplexers with silicon-based arrayed waveguide grating structures. In order to solve the problem of temperature sensitivity of silicon-based w...

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Problems solved by technology

[0003] However, silicon-based materials are relatively sensitive to temperature, which limits the further application of wavelength division multiplexers with silicon-based arrayed waveguide grating structures.

In order to solve the problem of silicon-based waveguide temperature sensitivity, the temperature control circuit TEC solution is used in the prior art, but this solution requires an external power supply and will cause additional energy loss. A passive solution that can also solve the temperature sensitivity problem of silicon-based waveguides

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