Hollow-core anti-resonance optical fiber with core shift structure
An eccentric structure and anti-resonance technology, which is applied in the field of hollow-core anti-resonant optical fiber and manufactures eccentric-structure hollow-core anti-resonant optical fiber, can solve the problems of narrowing transmission bandwidth, affecting the application advantages of optical fiber flexible waveguide, and high bending loss.
Inactive Publication Date: 2021-05-28
BEIJING UNIV OF TECH
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Problems solved by technology
[0003] The current structural design of the hollow-core anti-resonant optical fiber is mainly optimized and improved in the case of straight optical fiber, but high bending loss will occur when the optical fiber is bent, and the transmission bandwidth will also be narrowed, which affects the application advantage of the optical fiber as a flexible waveguide , therefore, ensuring that the optical fiber still has excellent properties when bent will be beneficial to the practical application of this new type of optical fiber
Method used
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Embodiment 1-3
[0034] figure 1 , figure 2 and image 3 The schematic diagrams of the end face structures of Embodiment 1, Embodiment 2 and Embodiment 3 of the hollow-core antiresonant optical fiber with eccentric structure of the present invention are given. The optical fiber structures all include a core region (1) with a low refractive index and a cladding region with a high refractive index, and the cladding region with a high refractive index is jointly composed of an inner cladding region (2) and an outer cladding region (3). Wherein, the low-refractive-index core area (1) is air; the inner cladding area (2) is formed by a plurality of microcapillaries of different sizes and the same thickness, which can be in contact with each other or not, and the microcapillaries have a negative curvature structure; The outer cladding region (3) is formed by a solid material with a uniform distribution of refractive index. The solid material used here is the same as that of the inner cladding regi...
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The invention discloses a hollow-core anti-resonance optical fiber with a core shift structure, and belongs to the technical field of optics and laser photoelectrons. The core shift optical fiber comprises a low-refractive-index fiber core area (1) which is off-center and an asymmetric high-refractive-index cladding area, the high-refractive-index cladding area is further divided into an inner cladding area (2) and an outer cladding area (3), the inner cladding area is composed of microcapillaries which are different in size and surround a fiber core, and the outer cladding area is a special structure cladding capable of identifying the core shift direction. Compared with a common hollow-core anti-resonance optical fiber with a symmetrical structure, the hollow-core anti-resonance optical fiber can eliminate reduction of optical fiber performance caused by bending of the optical fiber. A bendable and miniaturized flexible platform is created for applications such as high-power laser transmission and processing based on the hollow-core anti-resonance optical fiber.
Description
technical field [0001] The invention belongs to the technical field of optics and laser optoelectronics, and in particular relates to a hollow-core anti-resonant optical fiber with an eccentric structure that can improve bending performance. The invention also relates to a method for manufacturing the hollow-core anti-resonant optical fiber with an eccentric structure. Background technique [0002] As a major research direction in fiber optics, hollow-core fibers have some remarkable advantages because they use the air in the core to guide light. Compared with solid-core fibers, hollow-core fibers utilize the ultra-low Rayleigh scattering and nonlinear coefficients of air (several orders of magnitude lower than all glass materials), and in principle can achieve ultra-low loss and low nonlinear optical transmission. In addition , can also provide higher propagation speeds (i.e., smaller delays) and laser damage thresholds. [0003] The structural design of the current hollo...
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Login to View More IPC IPC(8): G02B6/02
CPCG02B6/02295G02B6/02342
Inventor 王璞孙盈盈汪滢莹
Owner BEIJING UNIV OF TECH