Triple play optical path structure in EPON/OLT

A technology of triple play and optical path, applied in multiplexing system selection device, data exchange network, digital transmission system, etc., can solve the problems of reduced stability, restricting users' requirements for high-speed data, etc., and achieve simple structure , keep the optical power stable, and enhance the effect of engineering application value

Inactive Publication Date: 2016-06-01
北京蓝山科技股份有限公司
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Problems solved by technology

However, when the uplink rate of the current OLT optical module is increased to 10.3125Gbit / s, the stability will decrease, which seriously restricts the user's requirements for high-speed data

Method used

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  • Triple play optical path structure in EPON/OLT
  • Triple play optical path structure in EPON/OLT
  • Triple play optical path structure in EPON/OLT

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0026] figure 1 It shows a schematic diagram of the structure principle of the triple-network fusion optical path used in EPON / OLT proposed by the present invention.

[0027] Such as figure 1 As shown, in the EPON-based symmetrical OLT optical path structure proposed by the present invention, the 10GEPON symmetrical OLT optical module adopts the uplink burst reception and downlink continuous transmission mode, which is ...

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Abstract

The invention discloses a triple play optical path structure in an EPON / OLT. The structure comprises four parts of a Triplexer, a transmitting unit, a receiving unit and a monitoring unit; the Triplexer comprises two lasers and a detector; the transmitting unit is composed of two lasers and is used for converting 1G and 10G electric signals into optical signals and keeping optical power stability in a closed loop state through a digital APC circuit; the receiving unit comprises a trans-impedance amplifier, an avalanche photodiode and limiting amplifiers; the monitoring unit is used for detecting the working state of the optical path structure in real time; the transmitted light and the received light are gathered in an optical device through a WDM, thus, single-optical fiber two-way transmission is realized; meanwhile, an MCU control module controls the size of a modulation current, and further the extinction ratio demanded by the system can be obtained. The structure is simple in structure and strong in robustness; in adoption of the structure, the optical power stability is kept; moreover, the extinction ratio demanded by the system can be obtained; and the structure has relatively strong engineering application value in the optical communication field.

Description

technical field [0001] The invention relates to an optical path structure, which belongs to the technical field of optical fiber communication, in particular to a triple-network fusion optical path structure used in EPON / OLT. Background technique [0002] At present, high-speed optical fiber transmission technology has been widely used in various backbone networks. EPON (Ethernet Passive Optical Network) has become the first choice of relevant operators because of its low cost and mature and reliable technology. The 10Gbit / s (hereinafter referred to as 10G) EPON system is a smooth upgrade of the 1GEPON system, which takes into account both 1G and 10G services. At the same time, the 10GEPON symmetrical OLT (optical line terminal) optical module is also an upgrade of the 10GEPON asymmetrical OLT optical module. The rate is increased to 10.3125Gbit / s, which greatly meets the user's demand for uplink bandwidth, so it is favored by operators. As the core of EPON, the OLT optica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04L12/26H04L12/24
Inventor 谭澍周权
Owner 北京蓝山科技股份有限公司
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