Pluggable hollow-core anti-resonance optical fiber coupling method and pluggable hollow-core anti-resonance optical fiber coupling device
An optical fiber coupling device, anti-resonance technology, applied in the coupling of optical waveguides, light guides, optics, etc., can solve problems such as large coupling loss, and achieve the effect of reducing coupling loss
Active Publication Date: 2020-05-19
BEIHANG UNIV
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Problems solved by technology
[0003] In order to solve the problem of large coupling loss when the hollow-core anti-resonant optical fiber is directly used for high-power laser transmission, the
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[0026] In order to describe the content of the present invention more clearly, the content of the present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.
[0027] A pluggable hollow-core anti-resonant fiber coupling device of the present invention, such as figure 1 As shown, it includes a coupling part and an optical fiber connector part. The coupling part includes a self-focusing lens 1, a single-fiber capillary 2, an optical fiber 3 and a thin glass tube 4. The optical fiber connector part includes an optical fiber connector ferrule 5 and an inner thread of an optical fiber connector. 7 and other parts of the fiber optic connector 8. Optical fiber 3 is a section of hollow-core anti-resonant optical fiber.
[0028] The refractive index distribution of the self-focusing lens 1 gradually changes along the radial direction, which can cause continuous refraction of the light transmitted along the axial direction, so...
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The invention discloses a pluggable hollow-core anti-resonance optical fiber coupling method and device, and belongs to the field of high-power laser transmission. The device comprises a coupling partand an optical fiber connector part, wherein the coupling part comprises a self-focusing lens, a single-fiber capillary tube, a thin glass tube and a hollow anti-resonance optical fiber. The self-focusing lens and the single-fiber capillary tube are respectively inserted into one end of the thin glass tube and are in planar connection in the thin glass tube; the single-fiber capillary tube is hollow and is inserted into the hollow-core anti-resonance optical fiber. The method comprises the steps of processing the coupling part, inserting the coupling part into an optical fiber connector insertion core to be fixed, and connecting the optical fiber connector with a laser through threads. The device provided by the invention has the characteristics of portability and pluggable performance. According to the device and the method, large light spots generated by high-power laser can be converged into small light spots to be coupled into the hollow-core anti-resonance optical fiber, so thatthe coupling loss of the laser and the optical fiber is reduced.
Description
technical field [0001] The present invention relates to a high-power laser transmission system, and more specifically, to a pluggable hollow-core anti-resonance optical fiber coupling method and device for high-power laser transmission. Background technique [0002] High-power lasers are widely used in aerospace, industry, medicine and other fields. In some applications, the laser light emitted by the laser needs to be transmitted through optical fibers, such as holmium lasers used in the field of laser lithotripsy. The transmission fiber currently used is mainly traditional silica fiber, which has the problems of large diameter and low power threshold, so it is replaced by a hollow-core anti-resonant fiber with small fiber diameter and high power threshold. However, the laser spot generated by the laser is relatively large. Large, hollow-core antiresonant fibers have smaller core diameters, and direct connections can result in larger coupling losses. Contents of the inven...
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Login to View More IPC IPC(8): G02B6/42
CPCG02B6/4204G02B6/421G02B6/4228G02B6/4296
Inventor 徐小斌曹欣玥何程高福宇邸照
Owner BEIHANG UNIV