Rod-like microstructure optical fiber

A microstructured optical fiber and rod-like technology, which is applied in cladding optical fibers, light guides, optics, etc., can solve problems such as the inability to use long-distance communication and the inability of microstructured cladding to Bragg diffraction.

Pending Publication Date: 2021-05-28
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In 2007, G.J.Pearce et al. carried out detailed simulation research on kagome fiber, and found that its microstructure cladding cannot form Bragg diffraction phenomenon to light like HC-PBGF
It is worth noting that t

Method used

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  • Rod-like microstructure optical fiber
  • Rod-like microstructure optical fiber
  • Rod-like microstructure optical fiber

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the following specific embodiments.

[0034] figure 1 , 2 , 3, 4, 5, and 6 show the schematic diagrams of the end face structures of Embodiments 1-6 of the rod-shaped microstructured optical fiber of the present invention. Their structures all include an outer cladding (1), an anti-resonant cladding (2), a core region (3) and an air region (4) in the anti-resonant cladding. The anti-resonant cladding is connected to the outer cladding. Among them, the refractive index of the anti-resonant cladding region (2) and the outer cladding region (1) is relatively high and equal, and the thickness of the outer cladding region (1) can reach the order of millimeters, so that the optical fiber is free from bending and external stress. Influenced perfect waveguide structure; the core region (3) is air. ...

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Abstract

The invention discloses a rod-shaped microstructure optical fiber, and belongs to the technical field of optics and laser photoelectrons. An anti-resonance cladding, an air region, an outer cladding and a fiber core region are included. The anti-resonance cladding is formed by axially and parallelly enclosing a plurality of hollow-core capillaries into a circle, the inner part of the anti-resonance cladding is a fiber core region, the outer part of the anti-resonance cladding is an outer cladding, each hollow-core capillary of the anti-resonance cladding is parallelly connected with the inner side surface of the outer cladding, and the inner part of each hollow-core capillary is the air region; and gaps are formed among the hollow-core capillaries. The thickness of the outer cladding is millimeter-scale thickness, and the high mechanical strength can be achieved by omitting the process step of coating in a drawing process so that the optical fiber can provide a stable and perfect waveguide system which is not influenced by bending and an external stress. And more structures are additionally arranged in the external cladding so that different functions are realized.

Description

technical field [0001] The invention belongs to the technical field of optics and laser optoelectronics, in particular to a rod-shaped microstructure fiber (Rod-Type Microstructure Fiber) with a working wavelength. Background technique [0002] Since its birth more than 20 years ago, hollow-core fibers have shown great potential in many fields with advantages that solid-core fibers do not have, such as low delay, low dispersion, high laser damage threshold, and low nonlinearity. Among them, the hollow core bandgap fiber (HC-PBGF) is the earliest hollow core fiber. Its cladding is composed of multiple layers of periodically arranged air holes, while the core generally omits 7-19 air holes to form "defects". The two-dimensional photonic crystal structure of the HC-PBGF cladding makes it confine the mode in the air core for transmission in a form similar to Bragg diffraction, and in theory, the more cladding layers, the stronger the mode confinement ability , and thus enables ...

Claims

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Application Information

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IPC IPC(8): G02B6/032G02B6/02
CPCG02B6/032G02B6/02342G02B6/02357G02B2006/0325
Inventor 王璞董子涵张鑫
Owner BEIJING UNIV OF TECH
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