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Centralized protection passive optical network system based on optical carrier suppression technology

A centralized protection and passive optical network technology, applied in the field of centralized protection passive optical network system, can solve the problems of increasing system complexity and cost, achieve increased complexity and cost, reduce the number of components, and achieve colorless effect

Inactive Publication Date: 2015-08-12
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of the wavelength grid width of the arrayed waveguide grating, the clock signal of the system must be at least 25GHz, and N electrical switches and N MCUs need to be installed at the OLT end, which increases the complexity and cost of the system

Method used

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  • Centralized protection passive optical network system based on optical carrier suppression technology
  • Centralized protection passive optical network system based on optical carrier suppression technology
  • Centralized protection passive optical network system based on optical carrier suppression technology

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Embodiment Construction

[0024] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following implementations example.

[0025] like figure 1 As shown, the centralized protection passive optical network system based on the optical carrier suppression modulation technology provided in this embodiment includes: an optical line terminal, a working feed-in fiber, a protection feed-in fiber, a remote node, and N working distributed An optical fiber, N protection distributed optical fibers and N optical network units, wherein: the optical line terminal is connected to one end of the working feed-in fiber and one end of the protection feed-in fiber respectively, and the other end of the working feed-in fibe...

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Abstract

The invention discloses a centralized protection passive optical network system based on an optical carrier suppression technology. The centralized protection passive optical network system comprises an optical line terminal, working feed-in fibers, protection feed-in fibers, a far-end node, N working distributed fibers, N protection distributed fibers and N optical network units. The optical line terminal comprises a carrier suppression double-sideband signal transmitter, a first comb filter, a 1*2 optical switch, a first array waveguide grating, an upper link and down link data transceiver, a second array waveguide grating, an erbium doped fiber amplifier, a second comb filter and a monitoring and control unit. The far-end node comprises a third array waveguide grating and a fourth array waveguide grating. Each optical network unit comprises a 2*2 optical coupler, a down link receiver and a reflective semiconductor optical amplifier.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and relates to a centralized protection passive optical network system based on optical carrier suppression modulation technology. Background technique [0002] In recent years, wavelength-division-multiplexed passive optical network (WDM-PON) technology has been recognized as an emerging future broadband access technology, which can provide higher bandwidth capacity, larger Coverage, better service quality, flexible and effective upgrade and configuration solutions, etc. As the transmission rate of a single user in WDM-PON continues to reach 1Gbit / s, 10Gbit / s, or even higher, any failure of the feed fiber or distribution fiber will cause huge data loss. Therefore, how to improve network survivability has become a widely discussed topic in WDM-PON system design. Even in some unpredictable situations, such as fire or earthquake, highly reliable data transmission has become the...

Claims

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Application Information

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IPC IPC(8): H04B10/516H04B10/25H04Q11/00
Inventor 朱敏张教王东鹏张旋樊鹤红孙小菡
Owner SOUTHEAST UNIV
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