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A Passive Optical Network Based on Wavelength Division Multiplexing

A technology of passive optical network and wavelength division multiplexing, which is applied in the field of optical communication network, can solve the problems of high construction cost and achieve the effect of low cost, easy maintenance and easy networking

Active Publication Date: 2015-11-18
SUZHOU CREALIGHTS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent application requires the use of specially designed colorless ONU equipment, that is, there are special requirements for ONU equipment, and the construction cost is also high

Method used

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  • A Passive Optical Network Based on Wavelength Division Multiplexing
  • A Passive Optical Network Based on Wavelength Division Multiplexing
  • A Passive Optical Network Based on Wavelength Division Multiplexing

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Embodiment Construction

[0023] figure 2 It is a schematic diagram of a PON network on WDM (PON-Over-WDM network) according to an embodiment of the present invention, which shows a schematic diagram of a WDM-Over-PON network using a single OLT device.

[0024] figure 2 In the downlink direction, in the central office, a single OLT sends a CW optical signal (continuous optical signal) with a wavelength of λD (such as 1490nm) downstream. After the CW optical signal passes through the first passive WDM coupler at the central office, it will The optical signal with wavelength λD is directed to the multi-wavelength generator, and then the multi-wavelength generator generates optical signals with multiple different wavelengths, and the wavelengths are λD1, λD2, ..., λDn. The multi-wavelength optical signal is then combined and multiplexed by the second passive WDM coupler at the central office, and then transmitted in a single transmission optical fiber. Wherein, the length of the single optical fiber m...

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Abstract

The invention relates to a passive optical network over wavelength division multiplexing (PON-Over-WDM). The network includes a first WDM coupler, an ONU terminal, a light circulator and a first wavelength converter, wherein the light circulator directs a burst optical signal transmitted by the ONU terminal to the first wavelength converter, and the first wavelength converter is used for performing wavelength conversion of the optical signal and transmitting the wavelength-converted optical signal to the first WDM coupler for coupling after which the optical signal is transmitted through a single optical fiber. The network of the invention is low in cost and flexible in expansion. The network can be accessed by high-capacity ONU equipments or terminal users and is compatible for different equipment suppliers and service providers. The network can be applied to optical communication networks.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an optical communication network. Background technique [0002] At present, with the acceleration of the integration of the three networks of the telecommunications network, the radio and television network and the Internet, and the active promotion of the large-scale commercialization of the passive optical network (Passive Optical Network, PON) by the telecommunications operators and the radio and television operators, the broadband network has ushered in a new round of development. Upgrade orgasm. The reason why network bandwidth can continue to increase is due to the development of optical communication technology that supports optical fiber networks. Optical communication networks use optical fiber media with huge bandwidth resources and excellent transmission performance. [0003] As a more advanced fixed network access method, FTTx (fiber-to-the-home / building / commun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02
Inventor 胡朝昱王锋
Owner SUZHOU CREALIGHTS TECH
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