CN104320191A - Multiservice access system and multiservice access method based on optical fiber communications - Google Patents
Multiservice access system and multiservice access method based on optical fiber communications Download PDFInfo
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- CN104320191A CN104320191A CN201410543941.XA CN201410543941A CN104320191A CN 104320191 A CN104320191 A CN 104320191A CN 201410543941 A CN201410543941 A CN 201410543941A CN 104320191 A CN104320191 A CN 104320191A
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Abstract
The invention provides a multiservice access system and a multiservice access method based on optical fiber communications. The multiservice access system comprises an electro-optic signal conversion module for converting received satellite radio-frequency signal into optical signals for propagating the satellite signals, an optical multiplex module for multiplexing various satellite optical signals and the television and data services of a cable television optical fiber into an optical signal and distributing the optical signal to an optical node, an optical separation module for separating out the various satellite optical signals and the television and data service multiplexed signal of the cable television optical fiber from the multiplexed optical signal at the optical node, a optoelectronic signal conversion module for converting the various satellite optical signals separated out into satellite electric signals, and a television channel switching module for selecting to receive the various satellite electric signals or television signals output by an optical node unit (ONU). The multiservice access of the various satellite signals, the digital optical fiber television signals and the XPON data signals is realized, and therefore, different programs can be watched at home, and a plurality of users can share different satellite programs.
Description
Technical field
The present invention relates to a kind of multi-service access system based on optical fiber communication and method, particularly relating to one is applicable in communication technical field, based on multi-service access system and the method for CWDM fiber optic transmission system transmission multichannel satellite-signal, digital fiber TV signal and XPON data.
Background technology
Along with the development of mechanics of communication and moving down of fiber optic network, the expansion of FTTC, FTTB, FTTH Optical Access Network and growth, the demand of the application of carrying multi-service ultra broadband is just come stronger.
This method realizes should realizing being in can watch different program simultaneously based on same net exactly, and the different satellite programming of multiple users share, realizes the data services such as online, program request simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of based on optical fiber communication, can realize multi-service access system and the method for multichannel satellite-signal, digital fiber TV signal and XPON data.
The technical solution used in the present invention is as follows: a kind of multi service access method based on optical fiber communication, and its method step is:
Step one, the high frequency radio signals from each satellite is modulated to respective light signal respectively;
Step 2, by the TV of described light signal and cable TV optical fiber and data service is multiplexing synthesizes a road light signal, and be assigned to optical node;
Step 3, at optical node place by a road light signal of described multiplexing synthesis, carry out isolating each road satellite light signal, and the TV of cable TV optical fiber and data service multiplexed signals;
Step 4, isolated each road satellite light signal is converted to satellite electric signal;
Step 5, the TV signal selecting reception each road satellite electric signal or optical node unit (ONU) to export.
As preferably, described method also comprises: before step one, first the satellite-signal received is carried out radio frequency amplification.
As preferably, described method also comprises: in step one, the high frequency radio signals of satellite is adjusted to respectively the respective narrow laser signal of single mode.
Based on the multi-service access system based on optical fiber communication of above-mentioned multi service access method, it is characterized in that: comprise the electro-optical signal modular converter, light Multiplexing module, light separation module, photoelectric signal transforming module and the television channel handover module that are connected successively; Electro-optical signal modular converter, is converted to satellite light signal by the satellite RF signal of reception; Light Multiplexing module, by the TV of each road satellite light signal and cable TV optical fiber and data service is multiplexing synthesizes a road light signal, and is assigned to optical node; Light separation module, at optical node place by a road light signal of described multiplexing synthesis, carries out separation and there emerged a each road satellite light signal, and the TV of cable TV optical fiber and data service multiplexed signals; Photoelectric signal transforming module, is converted to satellite electric signal by isolated each road satellite light signal; Television channel handover module, selects the TV signal that reception each road satellite electric signal or optical node unit (ONU) export; Also comprise light path node unit, the TV of isolated for light separation module cable TV optical fiber and data service are separated into TV signal and the data-signal of cable TV optical fiber.
As preferably, also comprise RF Amplifier Module, after the satellite RF signal of reception being carried out amplification process, be transferred to electro-optical signal modular converter.
As preferably, described RF Amplifier Module is multi-channel rf amplification module.
As preferably, described electro-optical signal modular converter is that CWDM electro-optic conversion light sends out equipment.
As preferably, described smooth Multiplexing module and light separation module are CWDM multi-path light wavelength division multiplexer.
As preferably, described photoelectric signal transforming module is CWDM photoelectric conversion signal receiving equipment.
Compared with prior art, the invention has the beneficial effects as follows: multiple-link satellite signal, digital fiber TV signal and XPON data-signal are carried out multi service access, realization is in can watches different program simultaneously, and the different satellite programming of multiple users share, realizes the data services such as online, program request simultaneously.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the present invention's wherein embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figure 1, in this specific embodiment, with by the TV of 6 road satellite-signals and cable TV optical fiber and data service, satellite receiver and the Set Top Box of carrying out multi-service data access user family are example, are described in detail.
Based on a multi service access method for optical fiber communication, its method step is:
Step one, the high frequency radio signals from each satellite is modulated to respective light signal respectively.In this specific embodiment, the high frequency radio signals from 6 satellites is individually modulated, be finally modulated to 6 road light signals.Also can be 2,4 or 8 the satellite light signals being modulated to 2 tunnels, 4 roads or 8 tunnels.In this specific embodiment, 6 road satellite-signals are modulated into the narrow laser signal of single mode of 1470nm, 1510nm, 1530nm, 1570nm, 1590nm and 1610nm wave band.
Step 2, by the TV of described light signal and cable TV optical fiber and data service is multiplexing synthesizes a road light signal, and be assigned to optical node.In this specific embodiment, by 6 road satellite light signals after modulation, cable TV composite television set channel (1490nm wave band) and digital cable data channel (1310nm wave band and 1550nm wave band) 9 wave bands synthesize a road light signal and export, and are assigned to optical node.
Step 3, at optical node place by a road light signal of described multiplexing synthesis, carry out isolating each road satellite light signal, and the TV of cable TV optical fiber and data service multiplexed signals.In this specific embodiment, step 2 Zhong mono-road light signal is carried out the optical wavelength isolating 7 road different business, and wherein 6 tunnels are satellite wavelength of optical signal, and 1 tunnel is the TV of cable TV optical fiber and the optical wavelength of data service.The TV of isolated No. 1 cable TV optical fiber and data service are in the data service optical wavelength of the TV optical wavelength and No. 2 cable TV optical fiber that are separated into No. 1 cable TV optical fiber further.
Step 4, isolated each road satellite light signal is converted to satellite electric signal.In this specific embodiment, it is 6 tunnel radiofrequency signals that isolated for step 36 road satellite light signals are carried out opto-electronic conversion.
Step 5, the TV signal selecting reception each road satellite electric signal or optical node unit (ONU) to export.
Described method also comprises: before step one, first the satellite-signal received is carried out radio frequency amplification, improves signal strength signal intensity and the signal to noise ratio of satellite TV signal, so that send into electro-optic conversion equipment.
Based on the multi-service access system based on optical fiber communication of above-mentioned multi service access method, comprise the electro-optical signal modular converter, light Multiplexing module, light separation module, photoelectric signal transforming module and the television channel handover module that are connected successively; Electro-optical signal modular converter, is converted to satellite light signal by the satellite RF signal of reception; Light Multiplexing module, by the TV of each road satellite light signal and cable TV optical fiber and data service is multiplexing synthesizes a road light signal, and is assigned to optical node; Light separation module, by optical node place by a road light signal of described multiplexing synthesis, carry out separation and there emerged a each road satellite light signal, and the TV of cable TV optical fiber and data service multiplexed signals; Photoelectric signal transforming module, is converted to satellite electric signal by isolated each road satellite light signal; Television channel handover module, selects the TV signal that reception each road satellite electric signal or optical node unit (ONU) export; Also comprise light path node unit, the TV of isolated for light separation module cable TV optical fiber and data service are separated into TV signal and the data-signal of cable TV optical fiber.
Also comprise RF Amplifier Module, after the satellite RF signal of reception being carried out amplification process, be transferred to electro-optical signal modular converter.
Described RF Amplifier Module is multi-channel rf amplification module.
In this specific embodiment, described electro-optical signal modular converter is that CWDM electro-optic conversion light sends out equipment, comprise 6 road satellite channel input interfaces, DC power input interface and CWDM 6 road light output interface, carry out the signal of telecommunication to light signal conversion for Zhuan Ge road satellite-signal, each road satellite-signal is modulated into respectively the narrow laser signal of single mode of 1470nm, 1510nm, 1530nm, 1570nm, 1590nm and 1610nm.
In this specific embodiment, described smooth Multiplexing module and light separation module are CWDM multi-path light wavelength division multiplexer.The CWDM multi-path light wavelength division multiplexer of described smooth Multiplexing module, comprises 6 road CWDM glistening light of waves interfaces, a road 1490nm/1310nm/1550nm complex light interface, a public compound interface of COM.6 road CWDM glistening light of waves interfaces these 6 wave bands of corresponding 1470nm, 1510nm, 1530nm, 1570nm, 1590nm and 1610nm respectively; 1490nm/1310nm/1550nm complex light interface is for connecting the multi-service fiber channel of cable TV composite television set/data; The public compound interface of COM mixes these 9 wave bands and becomes a road light signal to export.The CWDM multi-path light wavelength division multiplexer of described smooth separation module is the applied in reverse of the CWDM multi-path light wavelength division multiplexer of light Multiplexing module, 1 road light of compound is divided into the optical wavelength of 7 road different business.
In this specific embodiment, described photoelectric signal transforming module is CWDM photoelectric conversion signal receiving equipment, comprises optical interface and 6 tunnels independently radio-frequency (RF) coaxial interface that independently 6 tunnels receive CWDM ripple.Optical interface is for receiving the light signal of respective wavelength, and the coaxial interface output satellite signal of telecommunication, is connected to television channel diverter switch by coaxial interface.
Described television channel diverter switch, comprises 7 road rf input interfaces, a road radio frequency output interface.The TV signal that each road radio-frequency (RF) coaxial output interface of rf input interface connection CWDM photoelectric conversion signal receiving equipment and optical node unit (ONU) export; Its radio frequency output interface connects satellite receiver and TV by radio-frequency allotter part, and user can switch program on the different satellite of viewing and cable television program as required.
The said equipment interface type and communication mode, what just the embodiment of the present invention provided transmits multichannel satellite-signal, digital fiber TV signal and the multi-service access system of XPON data and a kind of embodiment of method based on CWDM fiber optic transmission system, and about other interface types, the present invention repeats no longer one by one.
Compared with prior art, multiple-link satellite signal, digital fiber TV signal and XPON data-signal are carried out multi service access by the present invention, realization is in can watches different program simultaneously, and the different satellite programming of multiple users share, realizes the data services such as online, program request simultaneously.
Claims (9)
1., based on a multi service access method for optical fiber communication, its method step is:
Step one, the high frequency radio signals from each satellite is modulated to respective light signal respectively;
Step 2, by the TV of described light signal and cable TV optical fiber and data service is multiplexing synthesizes a road light signal, and be assigned to optical node;
Step 3, at optical node place by a road light signal of described multiplexing synthesis, carry out isolating each road satellite light signal, and the TV of cable TV optical fiber and data service multiplexed signals;
Step 4, isolated each road satellite light signal is converted to satellite electric signal;
Step 5, the TV signal selecting reception each road satellite electric signal or optical node unit to export.
2. multi service access method according to claim 1, described method also comprises: before step one, first the satellite-signal received is carried out radio frequency amplification.
3. multi service access method according to claim 1, described method also comprises: in step one, the high frequency radio signals of satellite is adjusted to respectively the respective narrow laser signal of single mode.
4. based on the multi-service access system based on optical fiber communication of multi service access method according to claim 1, it is characterized in that: comprise the electro-optical signal modular converter, light Multiplexing module, light separation module, photoelectric signal transforming module and the television channel handover module that are connected successively; Wherein,
Electro-optical signal modular converter, is converted to satellite light signal by the satellite RF signal of reception;
Light Multiplexing module, by the TV of each road satellite light signal and cable TV optical fiber and data service is multiplexing synthesizes a road light signal, and is assigned to optical node;
Light separation module, at optical node place by a road light signal of described multiplexing synthesis, carries out separation and there emerged a each road satellite light signal, and the TV of cable TV optical fiber and data service multiplexed signals;
Photoelectric signal transforming module, is converted to satellite electric signal by isolated each road satellite light signal;
Television channel handover module, selects the TV signal receiving each road satellite electric signal or the output of optical node unit;
Also comprise light path node unit, the TV of isolated for light separation module cable TV optical fiber and data service are separated into TV signal and the data-signal of cable TV optical fiber.
5. multi-service access system according to claim 4, is characterized in that: also comprise RF Amplifier Module, is transferred to electro-optical signal modular converter after the satellite RF signal of reception being carried out amplification process.
6. multi-service access system according to claim 5, is characterized in that: described RF Amplifier Module is multi-channel rf amplification module.
7. multi-service access system according to claim 4, is characterized in that: described electro-optical signal modular converter is that CWDM electro-optic conversion light sends out equipment.
8. multi-service access system according to claim 7, is characterized in that: described smooth Multiplexing module and light separation module are CWDM multi-path light wavelength division multiplexer.
9. multi-service access system according to claim 8, is characterized in that: described photoelectric signal transforming module is CWDM photoelectric conversion signal receiving equipment.
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| CN110290091A (en) * | 2019-06-25 | 2019-09-27 | 王兴文 | A kind of data speed acceleration flash chamber |
| CN110336971A (en) * | 2019-06-25 | 2019-10-15 | 王兴文 | A kind of cable broadband speed-raising capacity-enlarging system |
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Address after: High tech Zone Shiyang street Chengdu city Sichuan Province, Qingyun 610041 village five group No. fifty-five Shiyang Industrial Park No. two building four floor Applicant after: CHENGDU GUANGDA NEW NETWORK TECHNOLOGY CO., LTD. Address before: High tech Zone Shiyang street Chengdu city Sichuan Province, Qingyun 610041 village five group No. fifty-five Shiyang Industrial Park No. two building four floor Applicant before: Chengdu Guangda Electronic Corporation Co., Ltd. |
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Application publication date: 20150128 |