The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
May. 29, 2020
Suzhou Everbright Photonics Co., Ltd., Jiangsu, CN;
Everbright Institute of Semiconductor Photonics Co., Ltd., Jiangsu, CN;
Hao Yu, Suzhou, CN;
Shujuan Sun, Suzhou, CN;
Jun Wang, Suzhou, CN;
Huadong Pan, Suzhou, CN;
Dayong Min, Suzhou, CN;
Suzhou Everbright Photonics Co., Ltd., Jiangsu, CN;
Everbright Institute of Semiconductor Photonics Co., Ltd., Jiangsu, CN;
Abstract
A beam combining device and method for a Bragg grating external-cavity laser module has a plurality of side by side light-emitting modules that use a Bragg grating to perform wavelength locking. Output light of the modules is incident to a beam combining element after passing through a focusing optical element for beam combining, and light subjected to beam combining is reflected partially and transmitted partially under the effect of a light splitting element. A part is incident into a dispersion element at a diffraction angle of the element. Parallel light is formed under the effect of a conversion optical element. Spots of the light beams of corresponding wavelengths of the light-emitting modules are formed on an image acquisition mechanism. Whether the wavelengths of the corresponding light-emitting modules are locked is determined by whether there is a deviation between preset spots and spots formed by the module on the acquisition mechanism.