Novel wired network system

A wired network, a new type of technology, applied in the field of wired networks, can solve the problems of short transmission distance, occupying optical fiber resources, large power consumption, etc., and achieve the effect of shortening construction period, saving optical fiber resources, and strong anti-interference ability.

Inactive Publication Date: 2009-02-25
SHANGHAI BROADBAND TECH
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AI Technical Summary

Problems solved by technology

Due to the use of analog transmission technology, the power consumption is large, the transmission distance is short, and multiple expensive optical amplifiers need to be added
In addition, due to the broadcast structure, there is only downlink transmission, and uplink transmission is very expensive and takes up a lot of optical fiber resources, which limits the increase in transmission bandwidth and makes it difficult to achieve interaction with audiences, on-demand services, etc., and cannot meet future business needs.

Method used

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  • Novel wired network system

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Embodiment Construction

[0032] Such as figure 1 As shown, a new type of wired network system, including:

[0033] Part 1: The transmitting part of the central video optical transceiver, used to modulate the video signal to be transmitted to the optical signal and transmit it in the optical fiber. Its working wavelength is 1310nm, which belongs to analog equipment, and its transmission rate is 622Mbps.

[0034] Component 2: The receiving component of the central video optical transceiver, used to receive the remote optical signal and demodulate the optical signal into a video signal. In this embodiment, since the upload signal has been realized through the PON network, this part of the equipment can Renovation as community monitoring and other purposes. The working wavelength of the receiving part is 1310nm, which belongs to analog equipment, and its transmission rate is 622Mbps.

[0035] Part 3: the receiving part of the video optical transceiver at the user end, which is connected to the transmitt...

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Abstract

A novel wired network system comprises a transmitting unit of a local video optical transmitter and receiver, a receiving unit of the local video optical transmitter and receiver, a receiving unit of a user side video optical transmitter and receiver, and a transmitting unit of the user side video optical transmitter and receiver; an optical line terminal; a wave division multiplexing / demultiplexing device, and an optical branching device for equally allocating the energy of optical signals with the same wavelength to a plurality of output ports; and a plurality of optical network units. The inventive system adopts wavelength division multiplexing technology to superimposing a passive optical network (PON) into an available wired network system by using a single fiber optic cable, retains the available wired network system, thereby avoiding interference of the use of original users during network construction process, effectively keeps away from 1310nm waveband in conventional cable televisions, and can be used together with conventional wired networks. The inventive system needs not to carry out relocation of fiber optic cables, thereby remarkably shortening network reconstruction period.

Description

technical field [0001] The invention relates to a wired network transmission system, in particular to a wired network where analog technology and digital technology coexist. Background technique [0002] At present, domestic wired networks mainly use analog optical signal generators and optical receivers. The transmission wavelength is mainly 1310nm, which belongs to the star broadcast network architecture, and optical signals are distributed to each optical node through splitters. Due to the use of analog transmission technology, the power consumption is large, the transmission distance is short, and multiple expensive optical amplifiers need to be added. In addition, due to the broadcast structure, there is only downlink transmission, and uplink transmission is very expensive and takes up a lot of fiber resources, which limits the increase in transmission bandwidth and makes it difficult to achieve interaction with audiences, on-demand services, etc., and cannot meet futur...

Claims

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Application Information

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IPC IPC(8): H04B10/12H04N7/22H04J14/02H04B10/27
Inventor 李毅刘浩峰陆肖元
Owner SHANGHAI BROADBAND TECH
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