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Double-core photonic crystal fiber polarization beam splitter

A technology of photonic crystal fiber and polarization beam splitter, which is applied in the direction of multi-core fiber, polarization fiber, cladding fiber, etc., can solve the problems of low birefringence of beam splitter, long fiber length, and inability to meet the miniaturization of devices, etc. Achieve the effects of good beam splitting effect, easy manufacture and simple structure

Active Publication Date: 2021-11-02
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, due to the low birefringence of this type of beam splitter, the fiber length is often very long, which cannot meet the needs of device miniaturization

Method used

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  • Double-core photonic crystal fiber polarization beam splitter
  • Double-core photonic crystal fiber polarization beam splitter
  • Double-core photonic crystal fiber polarization beam splitter

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise, "multiple" Generally contain at least two.

[0029] It sho...

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Abstract

The invention provides a double-core photonic crystal fiber polarization beam splitter, which comprises a cladding and two fiber cores. The cladding is composed of a plurality of evenly distributed round holes, and the hole distances between every two adjacent round holes are the same; the round holes comprise first round holes and second round holes which are filled with air and third round holes filled with metal elements, the diameter of the second round holes is larger than that of the first round holes, and the diameter of the third round holes is equal to that of the first round holes; the two first round holes are symmetrically distributed in the two sides of the center of the structure, and the two first round holes are clamped between the two fiber cores; and the eight first round holes and the two third round holes are uniformly distributed around the outer layers of the two fiber cores. The optical fiber length of the polarization beam splitter is only 240 microns, and the polarization beam splitter has the short optical fiber length and the high extinction ratio.

Description

technical field [0001] The invention relates to the technical field of photonic crystal fiber polarization beam splitters, in particular to a dual-core photonic crystal fiber polarization beam splitter. Background technique [0002] As an important device in the optical system, the polarization beam splitter has important applications in optical fiber communication and optical fiber sensing. Its main function is to split a beam of light into two mutually orthogonal polarized beams. Due to the unique characteristics of photonic crystal fibers such as endless single mode, high birefringence, flexible nonlinearity, and tunable dispersion, the effect on polarization beam splitters has attracted extensive attention from researchers. At present, when people design this type of polarization beam splitter, the following schemes are mainly used: [0003] (1) Early polarizing beam splitters: Most of them were prepared from traditional dual-core optical fibers based on the principle o...

Claims

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Application Information

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IPC IPC(8): G02B6/024G02B6/02
CPCG02B6/024G02B6/02042G02B6/02342
Inventor 苑金辉王珂屈玉玮邱石颜玢玢王葵如桑新柱余重秀
Owner BEIJING UNIV OF POSTS & TELECOMM
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