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Optical fiber for filtering cladding light and cladding light filter using same

A cladding light and filter technology, applied in the direction of multi-layer core/cladding fiber, cladding fiber, structure/shape of active medium, etc. , It is difficult to realize the problems of cladding light filtering, etc., to achieve the effect of improving safety and stability.

Active Publication Date: 2019-04-05
中科先为激光科技(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of these two methods is that it is difficult to achieve a uniform distribution of filtering temperature, and most of the cladding light will leak out within a distance of a few millimeters. Due to the high refractive index material has a certain absorption of the cladding light, resulting in filter Local overheating, it is difficult to achieve hundreds of watts to thousands of watts of cladding light filtering even through improved heat dissipation

Method used

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  • Optical fiber for filtering cladding light and cladding light filter using same
  • Optical fiber for filtering cladding light and cladding light filter using same
  • Optical fiber for filtering cladding light and cladding light filter using same

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Embodiment Construction

[0023] Certain embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to these set forth embodiments; rather, these embodiments are provided so that this invention will satisfy applicable legal requirements.

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. The present invention provides an optical fiber 10 for filtering cladding light. The optical fiber 10 is made of a finished optical fiber, not an optical fiber in the traditional sense. The above-mentioned finished optical fiber is an optical fiber in the traditional sense.

[0025] Taki...

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Abstract

Disclosed are a cladding light filtering optical fiber and a cladding light filter utilizing the same. The optical fiber comprises a cladding light filtering section which at least comprises a fiber core and at least one cladding covering the fiber core. The surface of the cladding on the outermost layer is coated with a low refractive index material and a high refractive index material in sequence along the optical propagation direction; the low-refractive-index material is filled with scattering particles. The optical fiber has effect of filtering cladding light gradually, avoids concentration of cladding light and weakens heat effect caused by the cladding light.

Description

technical field [0001] The invention belongs to the field of optical fiber lasers, and in particular relates to a device for filtering residual pumping laser light in optical fiber cladding or stripping harmful cladding light in high-power energy-transmitting optical fibers. Background technique [0002] With the development of semiconductor laser pumping technology and fiber drawing technology, the power of high-power fiber laser and amplifier has been continuously improved, and the output of 10,000-watt fiber laser has been realized. [0003] Before the output of the fiber laser and the amplifier, due to insufficiently absorbed pump light and laser light leaked from the core to the cladding, there is still a large amount of cladding light in the cladding, which will seriously affect the output beam quality of the fiber laser , and cause harm to the subsequent link optical devices, so it is necessary to strip the cladding light from the fiber cladding before the laser outpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/036H01S3/067
Inventor 宫武鹏薛宇豪陈子伦雷文强
Owner 中科先为激光科技(北京)有限公司