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Method and apparatus of wavelength division multiplexing optical network transmission

A technology of optical network transmission and wavelength division multiplexing, applied in the field of optical network, can solve the problem of low transmission performance, achieve the effect of improving network transmission performance and reducing nonlinear interference

Inactive Publication Date: 2013-07-24
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] In view of this, embodiments of the present invention provide a method and device for wavelength division multiplexing optical network transmission to solve the problem of low transmission performance

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  • Method and apparatus of wavelength division multiplexing optical network transmission
  • Method and apparatus of wavelength division multiplexing optical network transmission
  • Method and apparatus of wavelength division multiplexing optical network transmission

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not 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.

[0032] The terms "system" and "network" are often used interchangeably herein. The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article generally indicates that the contextual obj...

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Abstract

The embodiment of the invention provides a method and apparatus of wavelength division multiplexing optical network transmission. In the optical network for hybrid transmission with different rates, a channel with N wavelengths is divided into M channels, and each of the M channels includes at least one channel, and at least N-1 channels, wherein, N and M are positive integers which are greater than 1 and M<=N; each channel of the M channels is carried out by time-delay according to different time-delay amounts, and M channels with different time-delays are obtained; M channels with different time-delays are combined for output. Compared with the method, the apparatus comprises a wave separator, a delayer set and a combiner. The technical scheme solves the problem that the low transmission performance caused by non-linear interference in the optical network for hybrid transmission with different rates, and the network performance is improved.

Description

technical field [0001] The present invention relates to the field of optical networks, and more specifically, to a method and device for wavelength division multiplexing optical network transmission. Background technique [0002] Wavelength division multiplexing (WDM) technology can support simultaneous transmission of multiple light waves of different wavelengths according to a specified data transmission rate. In the current WDM system, coherent DSP (digital signal processing, digital signal processing) technology is widely used for the construction of 40Gbit / s and 100Gbit / s (hereinafter referred to as 40G and 100G respectively) rate optical transmission systems. 40G, 100G coherent DSP technology generally adopts binary phase shift keying (Binary phase shift keying, referred to as BPSK) of polarization multiplexing (polarization division multiplexing, referred to as PDM) or quadrature phase shift keying (Quadrature phase shift keying, referred to as QPSK) and other transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02
CPCH04B10/2543
Inventor 邓建吴学锋
Owner HUAWEI TECH CO LTD
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