CN109831254A - A kind of optic-fiber repeater system using wavelength-division multiplex technique - Google Patents
A kind of optic-fiber repeater system using wavelength-division multiplex technique Download PDFInfo
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- CN109831254A CN109831254A CN201711183980.3A CN201711183980A CN109831254A CN 109831254 A CN109831254 A CN 109831254A CN 201711183980 A CN201711183980 A CN 201711183980A CN 109831254 A CN109831254 A CN 109831254A
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Abstract
The present invention relates to a kind of optic-fiber repeater systems using wavelength-division multiplex technique, the system includes near-end machine, remote termination and single-core fiber, the near-end machine includes proximal end wavelength division multiplexing communications subsystem, the remote termination includes distal end wavelength division multiplexing communications subsystem, and the proximal end wavelength division multiplexing communications subsystem is connect by single-core fiber with distal end wavelength division multiplexing communications subsystem.Compared with prior art, the present invention has many advantages, such as strong flexibility, at low cost.
Description
Technical field
The present invention relates to photoelectricity transmission fields, more particularly, to a kind of optical fiber repeater system using wavelength-division multiplex technique
System.
Background technique
Current analog optical fiber direct discharging station, the communication connection of near-end machine and remote termination use single mode optical fiber, generally more
In the case of, operation wavelength is 1310nm and 1550nm.Main switching, the monitoring information for transmitting radiofrequency signal and distal end machine equipment.
If user needs additionally to transmit the data information of other large capacities, it is necessary to occupy original operation wavelength, or increase
Add number of fibers, original system certainly will be impacted, or cost is sharply increased.
By retrieval, China Patent Publication No. is that CN201563124U discloses a kind of radio frequency light transmission device, comprising: wave
Divide Multiplexing module, receive optical signal, carries out wavelength-division multiplex；Optical signal after wavelength-division multiplex is converted to telecommunications by photodetector
Number；Frequency-selecting and filtering module carries out frequency-selective filtering to electric signal, and branch transmits；Transmission module penetrates the master that frequency-selective filtering obtains
The output of frequency signal；Network module is connect by network with optical fiber repeater, the pipe that reception optical fiber repeater is carried out by network
Reason；Control module controls each module；The fsk signal that frequency-selective filtering obtains is received, passes through network module after being handled
Output.Optical fiber repeater can be improved to the convenience of radio frequency light transmission device management in the radio frequency light transmission device.But the reality
With it is novel be in order to convert optical signals to electric signal and carry out frequency-selective filtering again, rather than in order to complete using Wavelength division multiplexing module
The transfer function of Large Volume Data information is not able to satisfy requirement of the invention.
Summary of the invention
Wavelength-division multiplex is utilized it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of
The optic-fiber repeater system of technology.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of optic-fiber repeater system using wavelength-division multiplex technique, the system include near-end machine, remote termination and list
Core fibre, the near-end machine include proximal end wavelength division multiplexing communications subsystem, and the remote termination includes that distal end wavelength-division multiplex is logical
Believe that subsystem, the proximal end wavelength division multiplexing communications subsystem are connected by single-core fiber and distal end wavelength division multiplexing communications subsystem
It connects.
Preferably, the proximal end wavelength division multiplexing communications subsystem includes proximal end Wavelength division multiplexing module, proximal end number optical mode
Block, proximal end protocol converter, proximal end radio frequency optical module and radio frequency unit, described proximal end Wavelength division multiplexing module one end is respectively and closely
Digital optical module, the connection of proximal end radio frequency optical module are held, the other end is connected by single-core fiber and distal end wavelength division multiplexing communications subsystem
It connects；The proximal end number optical module is connected with proximal end protocol converter, and the proximal end radio frequency optical module and radio frequency unit connect
It connects.
Preferably, the distal end wavelength division multiplexing communications subsystem includes distal end Wavelength division multiplexing module, remote digital optical mode
Block, remote protocol converter, far end radio frequency optical module and duplexer, described distal end Wavelength division multiplexing module one end respectively and distal end
Digital optical module, the connection of far end radio frequency optical module, the other end are connect by single-core fiber with proximal end wavelength division multiplexing communications subsystem；
The remote digital optical module is connected with remote protocol converter, and the far end radio frequency optical module is connected with duplexer.
Preferably, it is equipped with proximal end wavelength division multiplexer in the proximal end Wavelength division multiplexing module, is used for distal end wavelength-division multiplex
The multiplexed signals that communication subsystem sends over is separated into 1470nm optical signal and 1310nm optical signal, wherein 1470nm optical signal
Send proximal end number optical module to, the 1310nm optical signal is sent to proximal end radio frequency optical module.
Preferably, the proximal end protocol converter is equipped with proximal end protocol conversion circuitry, the proximal end number optical module
Electric signal is converted by received 1470nm optical signal, is sent to proximal end protocol conversion circuitry, the proximal end protocol conversion electricity
Road meets IEEE802.3's for what IEEE802.3Z the and ITU-TG.695 protocol signal for accessing digital optical module was converted to standard
Network interface signal completes the transfer function of Large Volume Data information to provide transparent transmission network interface for the user at near-end machine.
Preferably, in transmit state, the proximal end wavelength division multiplexer is by the 1490nm from proximal end number optical module
After the 1550nm optical signal of optical signal and optical transmitter and receiver merges together, distal end wavelength division multiplexing communications is sent to by single-core fiber
System.
Preferably, the distal end Wavelength division multiplexing module is equipped with distal end wavelength division multiplexer, for leading to proximal end wavelength-division multiplex
The multiplexed signals that letter subsystem is sent is separated into 1490nm optical signal and 1550nm optical signal, and wherein 1490nm optical signal passes through interior
Portion's optical fiber is sent to remote digital optical module, and the optical signal of 1550nm wavelength is sent to far end radio frequency optical module.
Preferably, the remote protocol converter is equipped with remote protocol conversion circuit, the remote digital optical module
Received 1490nm optical signal is converted into electric signal, is sent to remote protocol conversion circuit, the remote protocol converts electricity
By the IEEE802.3Z and ITU-T of the digital optical module of access, G.695 protocol signal is converted to meeting for standard on road
The network interface signal of IEEE802.3 completes Large Volume Data information to provide transparent transmission network interface for the user at near-end machine
Transfer function.
Preferably, in transmit state, the distal end multiplexer believes the 1470nm light from remote digital optical module
It number is merged together with the 1310nm optical signal of optical transmitter and receiver, proximal end wavelength division multiplexing communications subsystem is sent to by single-core fiber.
Preferably, the far end radio frequency optical module passes through LNA respectively and PA is connect with duplexer.
Compared with prior art, the invention has the following advantages that
1, the transmission capacity of optical fiber is increased using the broadband characteristic of optical fiber by wavelength-division multiplex technique, makes an optical fiber
The physical limits of transmission information are doubled to several times.
2, have in same root optical fiber, the ability of transmission 2 or several nonsynchronous signals is conducive to digital signal and mould
The compatibility of quasi- signal, it is unrelated with data rate and modulation, in the line between flexibly can take out or be added channel.
3, to built fibre system, the optical cable that the core number of especially early stage laying is few can as long as original system has power headroom
Further increase-volume is realized that multiple one way signals or transferring without for two-way signaling make big change to original system, is had stronger
Flexibility.
4, it due to substantially reducing the usage amount of optical fiber, greatly reduces construction cost, since number of fibers is few, works as appearance
When failure, it is also convenient rapidly to restore to get up.
5, the increase of the sharing of active light device, transmission or new business to multiple signals reduces costs.
6, active equipment is greatly decreased in system, and which improves the reliabilities of system.
Detailed description of the invention
Fig. 1 is circuit system block diagram of the invention；
Fig. 2 is Wavelength division multiplexing module connection schematic diagram of the invention.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is a part of the embodiments of the present invention, rather than whole embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work all should belong to the model that the present invention protects
It encloses.
As shown in Figure 1, a kind of optic-fiber repeater system using wavelength-division multiplex technique, the system include near-end machine,
Remote termination and single-core fiber, the near-end machine include proximal end wavelength division multiplexing communications subsystem, and the remote termination includes distal end
Wavelength division multiplexing communications subsystem, the proximal end wavelength division multiplexing communications subsystem pass through single-core fiber and distal end wavelength division multiplexing communications
Subsystem connection.
The proximal end wavelength division multiplexing communications subsystem includes proximal end Wavelength division multiplexing module, proximal end number optical module, proximal end
Protocol converter, proximal end radio frequency optical module and radio frequency unit, described proximal end Wavelength division multiplexing module one end are digital with proximal end respectively
Optical module, the connection of proximal end radio frequency optical module, the other end are connect by single-core fiber with distal end wavelength division multiplexing communications subsystem；It is described
Proximal end number optical module connected with proximal end protocol converter, the proximal end radio frequency optical module is connected with radio frequency unit.
The distal end wavelength division multiplexing communications subsystem includes distal end Wavelength division multiplexing module, remote digital optical module, distal end
Protocol converter, far end radio frequency optical module and duplexer, described distal end Wavelength division multiplexing module one end respectively with remote digital light
Module, the connection of far end radio frequency optical module, the other end are connect by single-core fiber with proximal end wavelength division multiplexing communications subsystem；Described
Remote digital optical module is connected with remote protocol converter, and the far end radio frequency optical module passes through LNA and PA and duplex respectively
Device connection.
It is equipped with proximal end wavelength division multiplexer in the proximal end Wavelength division multiplexing module, is used for distal end wavelength division multiplexing communications subsystem
The multiplexed signals sended over of uniting is separated into 1470nm optical signal and 1310nm optical signal, and wherein 1470nm optical signal is sent to closely
Digital optical module is held, the 1310nm optical signal is sent to proximal end radio frequency optical module.
The proximal end protocol converter is equipped with proximal end protocol conversion circuitry, and the proximal end number optical module will be received
1470nm optical signal is converted into electric signal, is sent to proximal end protocol conversion circuitry, and the proximal end protocol conversion circuitry will access
The IEEE802.3Z and ITU-T of digital the optical module network interface for meeting IEEE802.3 that G.695 protocol signal is converted to standard are believed
Number, to provide transparent transmission network interface for the user at near-end machine, complete the transfer function of Large Volume Data information.
In transmit state, the proximal end wavelength division multiplexer by from proximal end number optical module 1490nm optical signal with
After the 1550nm optical signal of optical transmitter and receiver merges together, distal end wavelength division multiplexing communications subsystem is sent to by single-core fiber.
The distal end Wavelength division multiplexing module is equipped with distal end wavelength division multiplexer, is used for proximal end wavelength division multiplexing communications subsystem
The multiplexed signals of transmission is separated into 1490nm optical signal and 1550nm optical signal, and wherein 1490nm optical signal is sent by internal optical fiber
To remote digital optical module, the optical signal of 1550nm wavelength is sent to far end radio frequency optical module.
The remote protocol converter is equipped with remote protocol conversion circuit, and the remote digital optical module will be received
1490nm optical signal is converted to electric signal, is sent to remote protocol conversion circuit, and the remote protocol conversion circuit will access
The IEEE802.3Z and ITU-T of digital optical module G.695 protocol signal is converted to the network interface for meeting IEEE802.3 of standard
Signal completes the transfer function of Large Volume Data information to provide transparent transmission network interface for the user at near-end machine.
In transmit state, the distal end multiplexer by from remote digital optical module 1470nm optical signal and light end
The 1310nm optical signal of machine merges together, and is sent to proximal end wavelength division multiplexing communications subsystem by single-core fiber.
As shown in Fig. 2, the input of digital optical module, output signal and former signal of communication are connected to wave by internal optical fiber
Divide Multiplexing module, signal is synthesized all the way by Wavelength division multiplexing module, passes through piece optical fiber transceiving of com port.
Specific work process of the optic-fiber repeater system at near-end machine are as follows:
In receive state, remote termination is passed through in Wavelength division multiplexing module by the multiplexed signals that an optical fiber is sent
The light carrier of wavelength is separated into 1470nm optical signal and 1310nm optical signal by demultiplexer, and 1470nm optical signal passes through interior lights
Fibre is sent to digital optical module, and digital optical module photoelectric conversion is electric signal, by protocol converter number by the digital light of access
G.695 protocol signal is converted to the network interface signal for meeting IEEE802.3 of standard to IEEE802.3Z, ITU-T of module, thus
Transparent transmission network interface is provided for the user at near-end machine, completes the transfer function of Large Volume Data information；The light of 1310nm wavelength
Signal is sent to radio frequency optical module, becomes radiofrequency signal by photoelectric conversion and enters rear class, as far and near terminal normal communication signal.
In transmit state, by the 1490nm optical signal from digital light module and the 1550nm light from radio frequency optical module
Signal multiplexer in Wavelength division multiplexing module merges together, and is coupled in the same root optical fiber of optical link, by the optical fiber,
It transmits optical signals at a distance；
Specific work process of the optic-fiber repeater system at remote termination are as follows:
In receive state, near-end machine is passed through in Wavelength division multiplexing module by the multiplexed signals that an optical fiber is sent
The light carrier of wavelength is separated into 1490nm optical signal and 1550nm optical signal by demultiplexer, and 1490nm optical signal passes through interior lights
Fibre is sent to digital optical module, and digital optical module converts optical signals to electric signal, by protocol converter by the digital light of access
G.695 protocol signal is converted to the network interface signal for meeting IEEE802.3 of standard to IEEE802.3Z, ITU-T of module, thus
Transparent transmission network interface is provided for the user at near-end machine, completes the transfer function of Large Volume Data information；The light of 1550nm wavelength
Signal is sent to radio frequency optical module, becomes radiofrequency signal by photoelectric conversion and enters rear class, as far and near terminal normal communication signal.
In transmit state, by the 1470nm optical signal from digital light module and the 1310nm light from radio frequency optical module
Signal multiplexer in Wavelength division multiplexing module merges together, and is coupled in the same root optical fiber of optical link, by the optical fiber,
It transmits optical signals at a distance；
In this way, only corresponding Wavelength division multiplexing module need to be increased to original repeater equipment, without being laid with to having constructed
Good single-core fiber is replaced and is re-lay, and the further increase-volume to original system can be completed, and is provided for user new only
Vertical network pass-through channel, flexibility is stronger, and cost is relatively low.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of optic-fiber repeater system using wavelength-division multiplex technique, which is characterized in that the system includes near-end machine, remote
Terminal and single-core fiber, the near-end machine include proximal end wavelength division multiplexing communications subsystem, and the remote termination includes distal end wave
Divide multiplexed communications subsystem, the proximal end wavelength division multiplexing communications subsystem passes through single-core fiber and distal end wavelength division multiplexing communications
System connection.
2. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 1, it is characterised in that: described
Proximal end wavelength division multiplexing communications subsystem include proximal end Wavelength division multiplexing module, it is proximal end number optical module, proximal end protocol converter, close
End radio frequency optical module and radio frequency unit, described proximal end Wavelength division multiplexing module one end are penetrated with proximal end number optical module, proximal end respectively
The connection of frequency optical module, the other end are connect by single-core fiber with distal end wavelength division multiplexing communications subsystem；The proximal end digital light
Module is connected with proximal end protocol converter, and the proximal end radio frequency optical module is connected with radio frequency unit.
3. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 1, it is characterised in that: described
Distal end wavelength division multiplexing communications subsystem include distal end Wavelength division multiplexing module, it is remote digital optical module, remote protocol converter, remote
Hold radio frequency optical module and duplexer, described distal end Wavelength division multiplexing module one end respectively with remote digital optical module, far end radio frequency
Optical module connection, the other end are connect by single-core fiber with proximal end wavelength division multiplexing communications subsystem；The remote digital optical mode
Block is connected with remote protocol converter, and the far end radio frequency optical module is connect with duplexer.
4. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 2, it is characterised in that: described
Proximal end Wavelength division multiplexing module in be equipped with proximal end wavelength division multiplexer, for what distal end wavelength division multiplexing communications subsystem was sended over
Multiplexed signals is separated into 1470nm optical signal and 1310nm optical signal, and wherein 1470nm optical signal sends proximal end number optical mode to
Block, the 1310nm optical signal are sent to proximal end radio frequency optical module.
5. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 4, it is characterised in that: described
Proximal end protocol converter be equipped with proximal end protocol conversion circuitry, the proximal end number optical module is by received 1470nm optical signal
It is converted into electric signal, is sent to proximal end protocol conversion circuitry, the proximal end protocol conversion circuitry will access digital optical module
G.695 protocol signal is converted to the network interface signal for meeting IEEE802.3 of standard to IEEE802.3Z and ITU-T, to be proximal end
User at machine provides transparent transmission network interface, completes the transfer function of Large Volume Data information.
6. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 4, it is characterised in that: sending out
It penetrates under state, the proximal end wavelength division multiplexer is by 1490nm optical signal and optical transmitter and receiver from proximal end number optical module
After 1550nm optical signal merges together, distal end wavelength division multiplexing communications subsystem is sent to by single-core fiber.
7. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 3, it is characterised in that: described
Distal end Wavelength division multiplexing module be equipped with distal end wavelength division multiplexer, multiplexing for sending proximal end wavelength division multiplexing communications subsystem is believed
Number it is separated into 1490nm optical signal and 1550nm optical signal, wherein 1490nm optical signal is sent to remote digital light by internal optical fiber
Module, the optical signal of 1550nm wavelength are sent to far end radio frequency optical module.
8. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 7, it is characterised in that: described
Remote protocol converter be equipped with remote protocol conversion circuit, the remote digital optical module is by received 1490nm optical signal
Electric signal is converted to, is sent to remote protocol conversion circuit, the remote protocol conversion circuit is by the digital optical module of access
IEEE802.3Z and ITU-T G.695 protocol signal be converted to standard meet the network interface signal of IEEE802.3, to be close
User at terminal provides transparent transmission network interface, completes the transfer function of Large Volume Data information.
9. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 7, it is characterised in that: sending out
It penetrates under state, the distal end multiplexer is by the 1310nm light of 1470nm optical signal and optical transmitter and receiver from remote digital optical module
Signal merges together, and is sent to proximal end wavelength division multiplexing communications subsystem by single-core fiber.
10. a kind of optic-fiber repeater system using wavelength-division multiplex technique according to claim 3, it is characterised in that: institute
The far end radio frequency optical module stated passes through LNA respectively and PA is connect with duplexer.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114111895A (en) * | 2021-11-12 | 2022-03-01 | 中国电子科技集团公司第二十九研究所 | Device and method for sharing electronic instrument |
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