Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A special-shaped air hole-assisted multi-core few-mode fiber

A multi-core, few-mode, air hole technology, applied in multi-core fibers, clad fibers, optics, etc., can solve the problems of increasing the complexity of demultiplexing at the receiving end, increasing the splice loss, etc., achieving a simple structure and suppressing inter-mode Crosstalk, low crosstalk effect

Active Publication Date: 2022-07-22
NORTHEASTERN UNIV LIAONING
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different fiber core designs in this solution will increase the splicing loss with ordinary single-mode fibers, and will also increase the complexity of demultiplexing at the receiving end

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A special-shaped air hole-assisted multi-core few-mode fiber
  • A special-shaped air hole-assisted multi-core few-mode fiber
  • A special-shaped air hole-assisted multi-core few-mode fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A special-shaped air hole-assisted multi-core few-mode optical fiber in this embodiment specifically provides a "four-leaf clover"-shaped air-hole-assisted multi-core few-mode optical fiber. The cross-sectional diagram of the optical fiber is as follows figure 1 As shown, the fiber of this embodiment includes a hole-drilled portion in the center of the fiber and a cladding and a few-mode fiber core portion outside the air hole, the hole-drilled portion is a special-shaped air hole, and the diameter of the first air hole in the center is a=50 μm. Four second air holes are arranged on the outer layer of an air hole, and the center of the second air hole is located outside the first air hole, and the first air hole and the second air hole overlap, and the diameter of the second air hole is b=25μm , the distance from the center of the second air hole in the outer layer to the center of the cross-section of the multi-core few-mode fiber assisted by the special-shaped air hole...

Embodiment 2

[0068] This embodiment provides a multi-core few-mode optical fiber assisted by a "four-leaf clover"-shaped air hole. The optical fiber in this embodiment includes a hole-drilled portion in the center of the optical fiber and a cladding and a few-mode fiber core portion outside the air hole. Some of them are special-shaped air holes, the diameter of the first air hole in the center of the optical fiber section is a=50μm, four second air holes are arranged on the outer layer of the first air hole, and the center of the second air hole is located outside the first air hole, And the first air hole and the second air hole coincide, the diameter of the second air hole is b=25μm, and the distance from the center of the second air hole in the outer layer to the center of the cross-section of the multi-core few-mode fiber assisted by the special-shaped air hole is c=30μm , the diameter of the few-mode fiber core is d=14 μm, and the distance from the center of the few-mode fiber core to...

Embodiment 3

[0074] A special-shaped air hole-assisted multi-core few-mode optical fiber in this embodiment is a "clover"-shaped air-hole-assisted multi-core few-mode optical fiber. The cross-sectional diagram of the optical fiber is as follows: Figure 13 As shown, it includes a cladding, a few-mode fiber core and a special-shaped air hole arranged in the cladding, wherein the multi-core few-mode fiber assisted by the special-shaped air hole is a step-like distribution index structure, and the material of the few-mode fiber core is The germanium-doped silica glass is selected, and the cladding is pure silica glass. The refractive index of the few-mode fiber core > the refractive index of the cladding > the refractive index of the air hole, and the optical fiber cross-section is rotationally symmetrical.

[0075] The special-shaped air hole is located in the center of the optical fiber section. The special-shaped air hole in this embodiment consists of four air holes, of which the first air...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
refractive indexaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

A special-shaped air hole-assisted multi-core few-mode optical fiber belongs to the technical field of optical fiber communication. The multi-core few-mode optical fiber assisted by the special-shaped air hole includes a special-shaped air hole, a cladding layer and a few-mode fiber core. The air hole is composed of several second air holes evenly distributed on the outer circumference of the first air hole, the cladding is arranged on the outer circumference of the special-shaped air hole, the few-mode fiber cores are evenly distributed in the cladding, and two adjacent second air holes are A few-mode fiber is set between them. In the multi-core few-mode fiber assisted by the special-shaped air holes, the special-shaped air holes arranged around the few-mode fiber core have a lower refractive index relative to the cladding, and have a certain binding ability to light, thus reducing the light between the cores. Coupling suppresses crosstalk to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and relates to a multi-core few-mode optical fiber assisted by special-shaped air holes. Background technique [0002] With the continuous development of a new generation of mobile communication technologies, the demand for optical fiber communication capacity continues to increase. In optical fiber communication, technical means such as time division multiplexing, wavelength division multiplexing, and polarization multiplexing can effectively expand the transmission capacity. However, due to the rapid growth of data services, single-mode fiber cannot meet the capacity requirements. Among them, time-division multiplexing and wavelength-division multiplexing have been used since the early development of optical fiber communication, because the transmission is still carried out in single-mode fiber, which cannot break through the Shannon theoretical limit of single-mode fiber ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02
CPCG02B6/02042G02B6/02314G02B6/02019
Inventor 程同蕾梁恩旺梁永泽张函汪国瑞张继伟闫欣王方张学楠
Owner NORTHEASTERN UNIV LIAONING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com