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Single-mode multi-mode hybrid home network fiber

A technology of optical fiber and optical fiber core, applied in multi-core optical fiber, multi-layer core/clad optical fiber, clad optical fiber, etc., can solve unresolved problems such as optical power

Active Publication Date: 2017-05-17
德拉卡康泰克私营有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also does not solve the problem of how to reduce the optical power coupled into the fiber HOM

Method used

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  • Single-mode multi-mode hybrid home network fiber
  • Single-mode multi-mode hybrid home network fiber
  • Single-mode multi-mode hybrid home network fiber

Examples

Experimental program
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Embodiment Construction

[0106] In all the drawings of this document, the same elements and steps are indicated by the same numerals.

[0107] figure 1 The refractive index profile of the optical fiber according to the first embodiment of the present invention is depicted. It describes the relationship between the refractive index value n and the distance r from the center of the fiber.

[0108] The optical fiber of the present invention is a hybrid optical fiber having a refractive index profile n(r) defined by the following equation:

[0109]

[0110] in:

[0111] a s is the radius of the first core region;

[0112] a is the radius of the second core region;

[0113] Δ s is the step refractive index, at r=a s When , it is defined as the difference in refractive index between the first core region and the second core region;

[0114] no 0 is the maximum refractive index of the second core region;

[0115] α is a dimensionless parameter, which defines the shape of the refractive index pro...

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Abstract

The invention relates to a hybrid optical fiber, which includes a multi-segment fiber core that supports multi-mode transmission and presents a gradient refractive index distribution, wherein the center of the fiber core has a step refractive index, and the distribution parameter (as) of the step refractive index is adjusted and (Δs) can provide an optical fiber capable of transmitting differential-free multi-mode optical signals as well as differential-free single-mode optical signals. implementing such a refractive index profile n(r) of the core, while choosing parameters as and Δs large enough to accommodate the fundamental mode of the fiber, that at wavelengths such as 1550 nm transmitted in single mode, light coupled to the fundamental mode Power will be maximized while maintaining a relatively reduced modal dispersion at wavelengths such as 850 nm for multimode transmission.

Description

technical field [0001] The present invention relates to optical fiber transmission, in particular, to a home network optical fiber supporting single-mode transmission and multi-mode transmission. Background technique [0002] Optical fibers generally consist of a fiber core, which transmits an optical signal, and a fiber cladding, which confines the optical signal within the fiber core. For this, the refractive index n of the core c greater than the refractive index n of the cladding g . A fiber is often characterized by its refractive index profile, which relates the fiber's refractive index (n) to the fiber's radius (r), where: the X-axis shows the distance r from the center of the fiber, and the Y-axis shows the The difference between the refractive index at radius r and the refractive index of the fiber cladding. [0003] Today, there are two main categories of optical fiber: multimode optical fiber and single-mode optical fiber. In multimode fiber, for a given wave...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/028G02B6/036
CPCG02B6/0288G02B6/03633G02B6/02042G02B6/0281
Inventor 丹尼斯·莫林皮埃尔·圣索内蒂皮埃尔·希尔德
Owner 德拉卡康泰克私营有限责任公司