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:
Jun. 25, 2024
Filed:
Dec. 30, 2020
Wuhan Raycus Fiber Laser Technologies Co., Ltd., Hubei, CN;
Jianhong Shi, Hubei, CN;
Dapeng Yan, Hubei, CN;
Cheng Li, Hubei, CN;
Sha Li, Hubei, CN;
Haowei Hu, Hubei, CN;
Jianming Wang, Hubei, CN;
Ming Chen, Hubei, CN;
WUHAN RAYCUS FIBER LASER TECHNOLOGIES CO., LTD., Wuhan, CN;
Abstract
A method for preventing feedback light of a laser, includes fusion-splicing a target fiber to an output fiber of a laser, so that laser lights generated by the laser are output from the target fiber. A refractive index of a core of the output fiber of the laser is less than a refractive index of a core of the target fiber. When a feedback light of a laser light of the laser is reversely transmitted to a fusion-splicing surface through the target fiber, total reflection occurs due to a refractive index difference on the fusion-splicing surface, so that the feedback light is transmitted along the transmission direction of the laser light, and is prevented from entering the output fiber along the reverse direction of the laser light and further entering the laser's resonant cavity to damage the laser component or burn out the gain fiber.