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Optical fiber structure for non-circular symmetric scalar mode polarization separation and preparation method thereof

A polarization separation, optical fiber technology, applied in cladding optical fibers, glass manufacturing equipment, optics, etc., to achieve the effect of low splice loss

Active Publication Date: 2020-10-02
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This structure and its deformations such as multi-layer optical fiber and ring optical fiber are all circularly symmetrical structures, so they all have similar modal degeneracy problems

Method used

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  • Optical fiber structure for non-circular symmetric scalar mode polarization separation and preparation method thereof
  • Optical fiber structure for non-circular symmetric scalar mode polarization separation and preparation method thereof
  • Optical fiber structure for non-circular symmetric scalar mode polarization separation and preparation method thereof

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Embodiment Construction

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0018] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides a novel optical fiber for non-circular symmetric scalar mode polarization separation and a preparation method thereof. The optical fiber is uniform in longitudinal direction, the refractive index section is in a layered step axial symmetry type, and the optical fiber sequentially comprises a fiber core and a cladding which are concentric circles, and a rectangle in the center of the cross section from outside to inside. The cladding and the central rectangle have the same refractive index, and the fiber core refractive index is higher than the cladding and the central rectangle. According to the optical fiber structure, a non-circular symmetrical mode can be separated into two modes with large parameter difference, when the optical fiber is used for mode division multiplexing, a mode channel which is low in crosstalk and easy to access can be provided, and the complexity and the composition cost of a system are effectively reduced.

Description

technical field [0001] The present invention relates to a novel optical fiber for polarization separation of non-circularly symmetrical scalar modes. It involves the field of special optical fiber. Background technique [0002] Under the tremendous pressure of current communication demands, space division multiplexing is a new multiplexing scheme that doubles the existing communication capabilities. This solution has gained widespread attention both at home and abroad, and is generally considered to be the key technology to solve communication needs in the next stage. [0003] Modulus multiplexing is one of the two most important implementation forms of space division multiplexing, and it is also a form of realization that has attracted much attention. At present, mode division multiplexing is mainly based on scalar mode or two orthogonal modules of scalar mode. For example, for a 3-channel mode division multiplexing system, the channels used can be based on scalar mode LP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02C03B37/027
CPCC03B37/02709G02B6/02338
Inventor 郑晶晶裴丽解宇恒阮祖亮田梓辰宁提纲李晶
Owner BEIJING JIAOTONG UNIV
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