Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical communication method and device

A communication signal and channel technology, which can be used in selection devices, selection devices of multiplexing systems, digital transmission systems, etc., and can solve problems such as power leakage

Active Publication Date: 2021-01-12
ALCATEL LUCENT SHANGHAI BELL CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Laser wavelength drift can cause power in one channel to leak into another adjacent channel, creating inter-channel crosstalk (ICI)

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
  • Optical communication method and device
  • Optical communication method and device
  • Optical communication method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0019] As used herein, the term "comprise" and its variants mean open inclusion, ie "including but not limited to". The term "or" means "and / or" unless otherwise stated. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one further embodiment". The terms "first", "second", etc. may refer to di...

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 embodiment of the invention relates to an optical communication method and device. For example, the invention provides a method implemented in an optical line terminal. The method comprises the steps that a training signal of the first wavelength is received from a first optical network unit (ONU) through a first channel; the detected existence of a leakage signal in the training signal leakedto a second channel adjacent to the first channel is responded and the leakage ratio is determined based on the training signal and the leakage signal; a first communication signal of second wavelength different from the first wavelength is received from a second ONU through the second channel; and inter-channel crosstalk elimination is performed on the first communication signal based on the leakage ratio. The invention also provides the corresponding device.

Description

technical field [0001] The present disclosure relates generally to optical communication methods and apparatus, and more particularly, to methods and apparatus implemented at an optical line termination. Background technique [0002] Based on 25Gb / s duobinary multi-wavelength time division-wavelength division multiplexing passive optical network (TWDM-PON) has been considered to be used for Ethernet passive optical network (NG-EPON) uplink, meeting 100Gb / s The most promising candidate for the request. However, there are also many technical problems in this duobinary multi-wavelength TWDM-PON. For example, the emission wavelength of a laser installed in an optical network unit (ONU) usually drifts due to changes in factors such as driving current or temperature. Laser wavelength drift can cause power in one channel to leak into another adjacent channel, creating inter-channel crosstalk (ICI). How to eliminate ICI in a cost-effective manner remains an urgent problem to be s...

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): H04L25/02H04L25/03H04Q11/00
CPCH04L25/0224H04L25/03821H04Q11/0067
Inventor 叶晨晖胡小锋张凯宾
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD