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Optical fiber output device and optical fiber laser system

An output device, fiber laser technology, applied in the direction of cladding fiber, optical waveguide light guide, structure/shape of active medium, etc., can solve the problems of not all fiber, not fully utilized, etc., to improve peak power and increase effective area , reduce the effect of nonlinear effects

Inactive Publication Date: 2014-09-24
广东高聚激光有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for increased light intensity with less damaging radiation than traditional methods like welding or machining processes used during manufacturing. By expanding the lasers into fibers instead of just one type of glass rod, this process reduces stress concentration and improves durability while maintaining good performance over longer periods of use compared to older technologies such as lithography. Additionally, it achieves better transmission through reduced loss caused by waveguide bending waves generated from these structures. Overall, this new method provides more efficient and reliable ways to produce long distance telecommunications networks.

Problems solved by technology

This patented technology solves both issues caused by accumulating harmful optical signals during long distance transmission (LF) fibers due to their linear response properties that can lead to bending or other deformation). Additionally, there may also occur damage from excessive heat generated when delivering these types of fibers for use in industrial applications such as welding machines where they could potentially affect safety concerns if exposed too much energy was used without proper protection measures.

Method used

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  • Optical fiber output device and optical fiber laser system
  • Optical fiber output device and optical fiber laser system
  • Optical fiber output device and optical fiber laser system

Examples

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Embodiment 1

[0035] image 3 A schematic diagram showing an embodiment of the optical fiber output device provided by the present invention, such as image 3 As shown, it includes a photonic bandgap fiber (PBF) 31 that extracts laser light from a laser generating device 33 , and a fiber end cap structure 32 . The laser generating device 33 here may be a fiber laser.

[0036] In this embodiment, the photonic bandgap fiber 31 has an air core 312 and a cladding 311 . Wherein the cladding layer 311 also has an air structure. The fiber end cap structure 32 is a coreless silica fiber, and the output end 31a of the photonic bandgap fiber 31 is fused with the fiber end cap structure 32, thereby inducing the air core 312 and cladding 311 near the light output end 31a of the photonic bandgap fiber 31 The structure of the air in the air structure and the silica in the fiber end cap mechanism 32 collapses to produce a mode field matched fiber end cap, so that the laser beam output from the light ou...

Embodiment 2

[0041] Figure 4 A schematic diagram showing another embodiment of the optical fiber output device provided by the present invention, such as Figure 4 As shown, it includes a photonic bandgap fiber 41 that extracts laser light from a laser generating device 43 , and a fiber end cap structure 42 . The laser generating device 43 here may be a fiber laser.

[0042] In this embodiment, the photonic bandgap fiber 41 has an air core 412 and a cladding 411 . The cladding 4111 also has an air structure. The fiber end cap structure 42 is a coreless silica fiber. The fiber end cap structure 42 is fused with the output end of the photonic bandgap fiber 41, and the silicon dioxide forming the fiber end cap structure 41 is all filled in the air core 411 and cladding 412 near the light output end 41a of the photonic bandgap fiber 41 Air structure, thereby increasing the mode field area.

[0043] The specific welding method in this embodiment may also be fusion splice, filament splice,...

Embodiment 3

[0046] Figure 5 A schematic diagram of another embodiment of the optical fiber output device provided by the present invention, such as Figure 5 The fiber output device shown includes: a photonic bandgap fiber 51 and a glass substrate 52 . In the present invention, the glass substrate 52 serves as an optical fiber end cap structure. The end face of the light output end of the photonic bandgap fiber 51 is plane polished.

[0047] The light output end 51a of the photonic bandgap fiber 51 is combined with the glass substrate 52 through an optical combination method. The optical bonding method here can be chemically activated direct bonding (Chemically Activated Direct Bonding, CAD Bonding), molecular beam epitaxy (Molecular Beam Epitaxy, MBE); and ion beam sputtering (Ion Beam Sputtering, IBS ) etc. to achieve this interfaceless, lossless beam expansion. Such a combination method can make the scattering and loss at the interface almost negligible, achieve nearly 100% optica...

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Abstract

The embodiments of the invention provide an optical fiber output device and an optical fiber laser system. The device comprises a photonic band gap optical fiber for leading laser out from a laser generating device and an optical fiber end cap structure. The light output end of the photonic band gap optical fiber is combined with the optical fiber end cap structure to make the laser outputted from the light output end of the photonic band gap optical fiber undergo interface-less beam expansion. According to the invention, the high-peak power output can be realized, the excessive accumulation of the nonlinear effect during optical fiber propagation can be controlled, and at the same time, the damage of the light output end can be avoided, and according to the invention, a real all-fiber ultrahigh-peak power laser device is possible.

Description

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Claims

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Application Information

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Owner 广东高聚激光有限公司
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