一种光纤输出头和激光器

By combining coreless and cored optical fibers, designing the output end face with an 8-degree bevel, and using FC/APC connectors, the problem of easy damage to the output end face of medium and high power fiber lasers is solved, achieving stable transmission of higher power and reducing reflection loss, thus improving the stability and lifespan of the fiber output head.

CN224520439UActive Publication Date: 2026-07-17CONNET FIBER OPTICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CONNET FIBER OPTICS CO LTD
Filing Date
2025-05-29
Publication Date
2026-07-17

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Abstract

本实用新型实施例公开了一种光纤输出头及激光器，光纤输出头包括第一光纤和第二光纤，其中第一光纤为有芯光纤，第二光纤为无芯光纤，并且第二光纤的输出端面呈8度斜面。本实用新型通过在光纤输出头的尾纤中增加无芯光纤的方式，扩大了光束传输的光场面积，降低了光束在输出端面上的功率密度，使得光纤输出头能够进行更高功率的激光传输。通过将无芯光纤的输出端面设置为8度斜面，使得反射光偏离原光路，从而有效降低了反射损耗，保证了光路的稳定性。
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Claims

1. An optical fiber output head, characterized by, It includes a first optical fiber and a second optical fiber, the output end of the first optical fiber is connected to the input end of the second optical fiber, and the output end face of the second optical fiber is an 8-degree slope. The first optical fiber is a cored optical fiber, and the second optical fiber is a coreless optical fiber.

2. The optical fiber output head of claim 1, wherein, The length of the second optical fiber ranges from 2mm to 3mm.

3. The optical fiber output head of claim 1, wherein, The output end of the fiber optic output head also includes a connector.

4. The optical fiber output head according to claim 3, characterized in that, The connector includes any one of FC / APC, SC / APC, or FC / APC.

5. The optical fiber output head of claim 1, wherein, The first optical fiber includes a polarization-maintaining optical fiber.

6. A laser characterized by, Includes a seed source, an amplifier, and an optical fiber output head as described in any one of claims 1 to 5; The output of the seed source is connected to the input of the amplifier, and the output of the amplifier is connected to the input of the first optical fiber of the optical fiber output head.

7. The laser of claim 6, wherein, The amplifier includes at least one pump source, a pump combiner, and a ytterbium-doped fiber. The output of the seed source is connected to the first input of the pump combiner, the output of the pump source is connected to the second input of the pump combiner, and the first end of the ytterbium-doped fiber is connected to the output of the pump combiner.

8. The laser of claim 7, wherein, The seed source includes a 1064nm single-frequency polarization-maintaining laser, and the pump source includes a 976nm semiconductor laser.

9. The laser of claim 6, wherein, It also includes an optical power stripper and an optical isolator located between the amplifier and the optical fiber output head.

10. The laser of claim 6, wherein, Both the seed source and the optical fiber in the amplifier are polarization-maintaining fibers.