Wave time division mixed multiplexing passive optical network system

A wavelength multiplexing and optical distribution network technology, applied in wavelength division multiplexing systems, optical multiplexing systems, and selection devices for multiplexing systems, etc., can solve the problem of increasing equipment production and storage costs, and reducing equipment universality problems, such as ease of operation, maintenance and upgrade, reduction of network construction costs, and user sharing of bandwidth

Inactive Publication Date: 2011-05-25
ZTE CORP
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Problems solved by technology

[0006] Although the HPON system has many advantages, its network construction cost is still a serious problem. If the ONU uses multiple wavelengths, it will obviously increase the cost of equipment production and storage, and reduce the versatility of

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  • Wave time division mixed multiplexing passive optical network system
  • Wave time division mixed multiplexing passive optical network system
  • Wave time division mixed multiplexing passive optical network system

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[0056] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0057] The specific implementation of the passive optical network system of wavelength division time division multiplexing of the present invention is mainly based on two "colorless" ONU technologies, one is based on the remote end of the Reflective Semiconductor Optical Amplifier (RSOA: Reflective Semiconductor Optical Amplifier) Modulation loopback technology, the other is non-remote modulation loopback technology based on low-cost wavelength tunable lasers.

[0058] Such as figure 1 As shown, the passive optical network system of wavelength division time division hybrid multiplexing generally includes a central office end, a user end, and an optical distribution network (ODN: Optical Distribution Network) arranged between the central office end and the user end.

[0059] Among them, the central office includes an optical line terminal OLT, which...

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Abstract

The invention discloses a wave time division mixed multiplexing passive optical network system, which comprises a central office terminal, a client, and an optical distribution network arranged between the central office terminal and the client, wherein the central office terminal comprises an optical line terminal; the client comprises at least one optical network unit; and the optical network unit comprises an uplink processing unit which is used for loading uplink modulation signals to form uplink optical signals with specific wavelength and inputting the uplink optical signals into the optical distribution network. On the premise of ensuring high bandwidth and a large user number and meeting budget of the optical power of the whole network, low-cost colorless optical network unit (ONU) technology without multi-wavelength light source is used, and the passive characteristic of the whole optical distribution network (ODN) is kept, so the networking cost is obviously reduced.

Description

technical field [0001] The invention relates to the field of optical access network communication, in particular to a passive optical network system with wavelength division and time division hybrid multiplexing. Background technique [0002] With the development and maturity of passive optical network (PON: Passive Optical Network) technology, FTTX technology (referring to a series of optical access technologies such as fiber-to-the-home, fiber-to-the-building, and fiber-to-the-curb) has begun to be widely used in the global field . Source-optical network technology has the advantages of low cost, multi-user access, ultra-long-distance transmission, and high transmission bandwidth. Mainstream development technology. [0003] The existing passive optical network is mainly based on time division multiplexing passive optical network (TDM-PON: TimeDivision Multiplexing-Passive Optical Network). TDM-PON adopts a single wavelength for uplink and downlink, and the utilization ra...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04J14/02
CPCH04J14/0232H04J14/0282H04J14/0246H04J14/0252H04J2014/0253H04J14/0247H04J14/025H04J14/0227H04J14/0265
Inventor 苏婕何子安朱松林刘波
Owner ZTE CORP
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