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Passive optical network over wavelength division multiplexing

A passive optical network and wavelength division multiplexing technology, applied in the field of optical communication networks, can solve problems such as high construction cost, and achieve the effects of low cost, easy networking, and easy maintenance

Active Publication Date: 2012-09-26
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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  • Passive optical network over wavelength division multiplexing
  • Passive optical network over wavelength division multiplexing
  • Passive optical network over 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 telecommunication networks, radio and television networks, and the Internet, and the active promotion of large-scale commercial use of passive optical networks (Passive Optical Network, PON) by telecom operators and radio and television operators, broadband networks have ushered in a new era. The upgrade climax of the wheel. 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 / community, etc.) technology is an inevitabl...

Claims

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Application Information

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