A method and device for correcting the central wavelength of an arrayed waveguide grating

Abstract

The embodiment of this application disclose a method and device that corrects the central wavelength of the waveguide light grid. This method includes: determine the actual central wavelength of the array waveguide gatemine to the wavelength of the wavelength of the target center;Specific laser radiation against the waveguide raster, turning the central wavelength of the array waveguide grating into the center wavelength of the target; the specific laser indicates that the single pulse energy is greater than the laser of setting the single pulse energy.In this way, the use of specific laser as a radiation light source. Due to the high single pulse energy, the radiated array waveguide light gate does not need to perform hydrogen sensitivity and other light -sensitivity operations, which simplifies the steps of correction of the wavelength correction of the center wavelength of the array waveguard grid, which improves the array waveguide guideThe reliability of the wavelength correction of the center of the grating, and according to the wavelength changes, control the specific laser's radiation against the waveguide raster, that is, the precise correction of the wavelength of the array waveguide light grid center.

Description

technical field [0001] The present application relates to the field of optical communication, in particular to a method and device for correcting the central wavelength of an arrayed waveguide grating. Background technique [0002] In the field of optical communication, arrayed waveguide grating (Arrayed Waveguide Grating, AWG) is the key optical device of dense wavelength division multiplexing system. Important device, AWG is composed of input waveguide, input slab waveguide, array waveguide, output slab waveguide and output waveguide, multiplexed optical signal with multiple wavelengths enters AWG through input waveguide, diffracts in input slab waveguide and couples into array waveguide , after being transmitted through the arrayed waveguide, since any two adjacent waveguides between the arrayed waveguides have a fixed length difference, the multiplexed optical signal transmitted in the arrayed waveguide has a different phase difference related to the wavelength, and the ...

AI Technical Summary

Problems solved by technology

In the production process, due to factors such as stress, inhomogeneity, porosity, and pollution caused by deposition and other processes, there will be defects in the AWG chip process, resulting in errors in parameters such as phase and frequency, which in turn affect indicators such as the center wavelength.

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