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

Single mode fiber with low damping coefficient

A technology of attenuation coefficient and single-mode fiber, which is applied in the direction of multi-layer core/cladding fiber, graded index fiber core/cladding fiber, cladding fiber, etc. It can solve the problems of complex manufacturing process and achieve bending loss Good, reduce the specific gravity, reduce the effect of defects

Active Publication Date: 2015-07-08
SHANTOU HIGH TECH ZONE AOXING OPTICAL COMM EQUIP
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the design of this pure silicon core, it requires complex viscosity matching inside the optical fiber, and requires extremely low speed in the drawing process to avoid the increase of attenuation caused by defects inside the optical fiber caused by high-speed drawing, and the manufacturing process is very complicated.

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
  • Single mode fiber with low damping coefficient
  • Single mode fiber with low damping coefficient
  • Single mode fiber with low damping coefficient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The present invention is described in detail below in conjunction with the examples.

[0039] It includes a core layer and a cladding layer. The core layer is a silica glass layer co-doped with germanium and fluorine, or a silica glass layer doped with germanium. layer, auxiliary outer cladding and outer cladding. The outer cladding is a pure silica glass layer, and the radius of the outer cladding is 125 microns.

[0040] Table 1 lists the refractive index profile parameters of the preferred embodiment of the present invention, and Table 2 shows the optical transmission characteristics corresponding to the optical fiber described in Table 1.

[0041] Table 1. Optical fiber profile parameters of the embodiment of the present invention

[0042] serial number

r1[μm]

Δ1[%]

r2[μm]

Δ2[%]

r3[μm]

Δ3[%]

r4[μm]

Δ4[%]

1

4.3

0.19

11.8

-0.13

14.5

-0.52

42

-0.18

2

4.2

0.17

11.5

-...

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

No PUM Login to View More

Abstract

The invention relates to a single mode fiber with a low damping coefficient. The single mode fiber with the low damping coefficient comprises a core layer and a cladding layer and is characterized in that the radius r1 of the core layer is 3.9-4.6Mum, the relative index of refraction delta1of the core layer is 0.08%-0.24%, the core layer covers an inner cladding layer, an concaving inner cladding layer, an auxiliary outer cladding layer and an outer cladding layer from interior to exterior, wherein the radius r2 of the inner cladding layer is 8-15Mum, the relative index of refraction delta2 of the inner cladding layer is-0.30 %--0.05 %,the radius r3 of the concaving inner cladding layer is 14-20Mum, the relative index of refraction delta3 of the concaving inner cladding layer is -0.6 %--0.2 %, the radius r4 of the auxiliary outer cladding layer is 35-50Mum, and the relative index of refraction delta4 of the auxiliary outer cladding layer ranges from -0.35 % to -0.05 %. The outer cladding layer is a pure silicon dioxide glass layer. The single mode fiber with the low damping coefficient has the advantages that the damping coefficient of a fiber is reduced, and through the reasonable design on the section face of each core and cladding layer of the fiber, the fiber is provided with a MFD equal to or larger than 8.7Mum; the section face of the fiber adopts a multilayer step-pattern concaving cladding structure, the wide cladding structure is used for limiting fundamental mode reveal, and a good improvement function on the bending loss of the fiber is achieved.

Description

technical field [0001] The invention relates to the technical field of optical fiber transmission, in particular to a single-mode optical fiber with a relatively low attenuation coefficient. Background technique [0002] In 100G high-speed transmission systems, coherent receiving systems and digital signal processing DSP are widely used. Since dispersion and polarization mode dispersion can be linearly compensated in the electrical domain at the output end, the two can no longer be regarded as long-distance high-speed transmission system performance. Now more difficulties and hotspots focus on how to reduce the attenuation and nonlinear effects of optical fibers, two factors that are difficult to compensate with signal processing. [0003] In 100G and beyond 100G systems, the receiving end adopts coherent reception and digital signal processing technology (DSP), which can digitally compensate the dispersion and polarization mode dispersion (PMD) accumulated in the entire tra...

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 Applications(China)
IPC IPC(8): G02B6/02G02B6/036
CPCG02B6/028G02B6/03661
Inventor 张磊龙胜亚王洋王智勇王瑞春
Owner SHANTOU HIGH TECH ZONE AOXING OPTICAL COMM EQUIP
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