Array waveguide grating with insensitive temperature

Abstract

The invention discloses an array waveguide grating with an insensitive temperature. The array waveguide grating comprises an input waveguide zone, an input slab waveguide zone, an array waveguide zone, an output slab waveguide zone and an output waveguide zone which are connected in sequence, wherein the array waveguide zone is embedded with at least two temperature compensation media to realize at least two-order temperature compensation. By adopting the technical scheme provided by the invention, the temperature characteristics of the traditional array waveguide grating can be notably improved, and the temperature insensitiveness of the array waveguide grating can be realized. Meanwhile, as the array waveguide provided by the invention adopts the structural design of a concentric circle, the embedded temperature compensation media are distributed vertically to the array waveguide, thereby effectively reducing scattering loss, realizing symmetry between input and output, and reasonably reducing the overall size of an array waveguide grating device.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a temperature-insensitive arrayed waveguide grating. Background technique [0002] Arrayed Waveguide Grating (AWG) is a photonic device used to synthesize and separate different wavelengths. It can selectively pass light of a specific wavelength from the input port to the output port. When used to pass light waves of different wavelengths from several inlets and / or to several outlets, the AWG acts as a wavelength multiplexer and / or demultiplexer to combine and / or decompose light energy of different wavelengths. Compared with traditional optical multiplexing / demultiplexing devices, AWG has many advantages, such as good scalability, low loss, and high stability. Driven by the ever-decreasing cost, many equipment application manufacturers have begun to consider using it to replace traditional devices, and have gradually put it into commercial use. Nevertheless, AWG a...

AI Technical Summary

Problems solved by technology

However, this structure only achieves first-order temperature compensation, and the structure is not completely symmetrical. The light wave passes through the medium at a grazing angle, so it will introduce a large scattering loss. In addition, the medium inserted into the straight array waveguide will also cause Arrayed Waveguide Grating Device Size Increase

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