Mold stripper structure, and transmission method of laser by the mold stripping structure
A stripping device and structure technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve problems such as damage and burning of the optical fiber shell, and achieve the effects of suppressing heat generation and light absorption by the surface
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no. 1 approach
[0023] figure 1 with figure 2 An optical fiber core 10 including the stripper structure M according to the first embodiment is shown. This optical fiber core wire 10 is used in an optical fiber cable mounted on a laser processing machine or the like and used for transmitting laser light, for example.
[0024] The optical fiber core 10 has an optical fiber 11 and an optical fiber jacket 12 covering the optical fiber 11 . The outer diameter of the optical fiber core wire 10 is, for example, 1.3 mm.
[0025] The optical fiber 11 has a core 11a having a relatively high refractive index and a cladding 11b that covers the core 11a and has a relatively low refractive index. The core 11a of the optical fiber 11 is formed of, for example, undoped pure silica, and the cladding 11b is formed of silica doped with a dopant (fluorine, boron, etc.) that lowers the refractive index. The outer diameter of the optical fiber 11 is, for example, 500 μm. The diameter of the core 11a is, for ...
no. 2 approach
[0039] Figure 4 with Figure 5 An optical fiber core 10 including the stripper structure M according to the second embodiment is shown. In addition, the part whose name is the same as that of 1st Embodiment is denoted by the same code|symbol.
[0040] In this second embodiment, the optical fiber 11 that is the exposed portion 10a of the optical fiber has a tapered shape with a sharp tip. Many particle-shaped protrusions 15 are formed on the tapered outer peripheral surface 13 of the optical fiber 11 and are integrally formed with the tapered outer peripheral surface 13 of the optical fiber 11 to form a fine concave-convex surface. The stripper structure M according to the second embodiment is constituted by this uneven surface. The arithmetic mean roughness Ra of the concave-convex surface of the stripper structure M according to the second embodiment is 2 nm or less, or 25 nm or more.
[0041] In the stripper structure M according to the second embodiment having the abov...
other Embodiment approach
[0044] In the first embodiment, there is such a structure: that is, a plurality of annular grooves 14 respectively extending in the circumferential direction are formed on the outer peripheral surface 13 of the optical fiber 11, and the plurality of annular grooves 14 are The optical fibers 11 have intervals between each other in the length direction, but it is not limited thereto, for example, it can also be Image 6 One structure shown: that is, the groove 14 extends helically in the length direction of the optical fiber 11 .
[0045] 【Example】
[0046] (optical fiber core wire)
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