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Method and device for correcting array waveguide grating center wavelength

An arrayed waveguide grating and center wavelength technology, applied in the field of optical communication, can solve problems such as parameter errors affecting center wavelength, phase, frequency, etc., AWG chip process defects, etc., to improve reliability, simplify steps, and achieve the effect of accurate correction

Active Publication Date: 2019-10-15
GUANGXUN SCI & TECH WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Method and device for correcting array waveguide grating center wavelength
  • Method and device for correcting array waveguide grating center wavelength
  • Method and device for correcting array waveguide grating center wavelength

Examples

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Embodiment 1

[0025] figure 1 is a schematic flowchart of a method for correcting the central wavelength of an arrayed waveguide grating provided in an embodiment of the present application, as shown in figure 1 Said, said method comprises the steps of:

[0026] S101: Determine a wavelength change amount for adjusting an actual central wavelength of the arrayed waveguide grating to a target central wavelength.

[0027] In the embodiment of the present application, the actual central wavelength of the arrayed waveguide grating can be obtained by measuring with optical measuring equipment; the target central wavelength can be the commercial standard central wavelength of the arrayed waveguide grating, or it can be set close to the above-mentioned commercial standard center wavelength according to the actual situation. wavelength of wavelength.

[0028] For the implementation of this step, for example, after the actual central wavelength is obtained by the optical measurement device, the wav...

Embodiment 2

[0054] Further illustration is made on the basis of Embodiment 1 of the present application.

[0055] In the embodiment of the present application, the operating parameters of the radiation area adjustment device are determined according to the amount of wavelength change, and the specific laser is controlled to radiate the arrayed waveguide grating according to the operating parameters of the radiation area adjustment device, thereby changing the center wavelength of the arrayed waveguide grating into the target center wavelength; certain lasers are ultrafast lasers.

[0056] In a specific application scenario, see figure 2 , is a schematic diagram of the overall structure of a system for correcting the central wavelength of an arrayed waveguide grating provided in an embodiment of the present application, which includes: an arrayed waveguide grating 10, a light source 20 for emitting a specific laser, a lens system 30, a precision displacement platform 40, and target radiat...

Embodiment 3

[0063] Further illustration is made on the basis of Embodiment 1 of the present application.

[0064] In the embodiment of the present application, the working parameters of the specific laser are determined according to the amount of wavelength change, and the specific laser is controlled to radiate the arrayed waveguide grating according to the working parameters of the specific laser, and then the central wavelength of the arrayed waveguide grating is changed to the target central wavelength; the specific laser for ultrafast lasers.

[0065] Variation of the effective refractive index of the arrayed waveguide in the target radiation area n t It is related to the parameters of the ultrafast laser. For example, when the pulse width of the ultrafast laser is greater than 200 fs, the ultrafast laser will rapidly deposit energy in the arrayed waveguide, and at the same time impact the material inside the arrayed waveguide, thereby causing The inside of the arrayed waveguide is ...

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Abstract

The invention discloses a method and a device for correcting an array waveguide grating center wavelength. The method comprises the following steps of determining to adjust an actual center wavelengthof an array waveguide grating to a wavelength change amount of a target center wavelength; and according to the wavelength change amount, making a specific laser radiate the array waveguide grating so that the center wavelength of the array waveguide grating becomes the target center wavelength, wherein the specific laser represents a laser with single pulse energy which is greater than set single pulse energy. The specific laser is used as a radiation light source. Because of the high single pulse energy, the irradiated array waveguide grating does not need to carry out operation of increasing photosensitivity such as hydrogen loading and the like, a step of correcting the array waveguide grating center wavelength is simplified and reliability of array waveguide grating center wavelengthcorrection is improved. And according to the wavelength change amount, the specific laser is controlled to radiate the array waveguide grating, which means that accurate correction of the array waveguide grating center wavelength is realized.

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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/12
CPCG02B6/12009
Inventor 胡家艳孔祥健
Owner GUANGXUN SCI & TECH WUHAN
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