CN202737866U - Multi-split simulation fiber repeater system - Google Patents
Multi-split simulation fiber repeater system Download PDFInfo
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- CN202737866U CN202737866U CN 201220119232 CN201220119232U CN202737866U CN 202737866 U CN202737866 U CN 202737866U CN 201220119232 CN201220119232 CN 201220119232 CN 201220119232 U CN201220119232 U CN 201220119232U CN 202737866 U CN202737866 U CN 202737866U
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Abstract
The utility model discloses a multi-split simulation fiber repeater system. The system comprises a radio frequency diplexer, a radio frequency multipath power divider, a photoelectric module, a coarse wavelength division multiplexer, an optical path power divider, a plurality of modem transmitting and receiving modules, and a plurality of radio frequency power amplifying modules characterized by low noise amplification and power amplification integration. The system provided by the utility model has the beneficial effects of achieving multipath distribution; preventing a base station from being interfered by uplink noise during a signal multipath distribution process; overcoming the problem existing in a conventional engineering multi-split machine and characterized by uplink noise interference in the base station; and lowering the cost due to the fact that only one FP laser and a plurality of PIN photoelectric tubes are adopted in a near-end device to form one optical module structure instead of adopting a plurality of FP lasers and a plurality of PIN photoelectric tubes to form a plurality of optical modules.
Description
Technical field
The utility model relates to communication technical field, is specifically related to a kind of optical fiber direct amplification machine system.
Background technology
Optical fiber direct amplification machine mainly comprises analog optical fiber direct amplification machine and digital fiber direct amplification machine, and prior art situation separately is described below:
A. analog optical fiber direct amplification machine, use on the engineering at present many be that one-to-one, one drag two and drag three, only have a laser and a photodetection pipe in its each optical module, the analog optical fiber direct amplification machine since near-end carried out light shunt, close the road, in optical fiber, transmit behind the radiofrequency signal modulated light wave, the noise that produces after its demodulation increases along with near-end machine light way along separate routes becomes how much multiples, the lifting of upstream noise will produce severe jamming to the base station, and this has just limited analog optical fiber direct amplification machine one and has dragged many communication system architectures.
B. digital fiber direct amplification machine, at present existing use on the engineering, its major advantage is to have overcome the analog optical fiber direct amplification machine upstream noise interference base station problem that present engineering is used, realize that one drags many or other networking modes, but its complicated structure, cost are very high, and the buying production cycle is longer, the engineering feedback stability has much room for improvement at present, and these have limited its large-scale engineering networking.
The utility model content
The utility model purpose is based on novel photoelectric modular structure and CWDM technology and suppresses upstream noise and superpose and drag analog optical fiber direct amplification machine system.
In order to realize above purpose, the utility model provides a kind of one to drag analog optical fiber direct amplification machine system, it comprises: radio frequency duplexer, be connected with the base station is two-way on the one hand, and output connects the FP laser of optical-electric module, the road port that closes that input connects the radio frequency multi-path power divider on the other hand; The radio frequency multi-path power divider, its each minute road port connect respectively the PIN photoelectric tube of optical-electric module; Optical-electric module comprises FP laser and several PIN photoelectric tubes, is connected with corresponding minute road port of Coarse Wave Division Multiplexer respectively; Coarse Wave Division Multiplexer, it closes the road port that closes that road port connects the light path power splitter; The light path power splitter, its each minute road port connect respectively an end of a modulation /demodulation transceiver module by trunk optical fiber; Several modulation /demodulation transceiver modules, the other end separately connects a LNA, power amplification integrated radio frequency power amplification module; Several LNA, power amplification integrated radio frequency power amplification module, the other end separately connects an indoor radio-frequency (RF) passive distribution system network.
Described trunk optical fiber adopts the single mode single-core fiber.
Described modulation /demodulation transceiver module is made of a Distributed Feedback Laser (distributed feedback laser) and a PIN photoelectric tube.
Described power amplification integrated radio frequency power amplification module is to be made of descending radio frequency amplifying unit (PA) and up radio frequency LNA unit (LAN).
As further technical scheme, described optical-electric module has four PIN photoelectric tubes of a FP laser; Correspondingly, the light path power splitter adopts four power splitters, and the radio frequency multi-path power divider is radio frequency four road power splitters, and modulation /demodulation transceiver module and LNA, power amplification integrated radio frequency power amplification module are four.
The beneficial effects of the utility model are: a. realizes the multichannel distribution; B. the signal multichannel is distributed, and its upstream noise can not produce the base station and disturb, and can overcome present engineering is dragged many upstream noises interference base station with machine one problem; C. adopt a FP laser and four PIN photoelectric tubes to form the structure of an optical module in the near-end machine, its a plurality of optical modules of being comprised of a plurality of FP lasers and a plurality of PIN photoelectric tube of comparing have at cost and obviously have low-cost advantage; D. following examples are designed to one and drag four structures, in the situation of link power budget license, can realize that one drags six, one to drag eight structure networkings equally, and upstream noise can not superpose and the base station is produced interference at this moment.
Description of drawings
Fig. 1 is the formation schematic diagram of the optical fiber direct amplification machine system that the utility model proposes.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
As shown in Figure 1, the optical fiber direct amplification machine system that provides of present embodiment comprises: radio frequency duplexer, radio frequency multi-path power divider, optical-electric module, Coarse Wave Division Multiplexer, light path power splitter, trunk optical fiber (being designated SMF among the figure), modulation /demodulation transceiver module, LNA, power amplification integrated radio frequency power amplification module (being designated LAN/PAn among the figure).In the present embodiment, optical-electric module has a FP laser (being the Fa Buluo laser) and four PIN photoelectric tubes; Correspondingly, the light path power splitter adopts four power splitters, and the radio frequency multi-path power divider is radio frequency four road power splitters, and modulation /demodulation transceiver module and LNA, power amplification integrated radio frequency power amplification module are four.In addition, each modulation /demodulation transceiver module is made of a Distributed Feedback Laser (distributed feedback laser) and a PIN photoelectric tube.Power amplification integrated radio frequency power amplification module is to be made of descending radio frequency amplifying unit (PA) and up radio frequency LNA unit (LAN).
The annexation of above-mentioned each device is as follows: radio frequency duplexer is connected with the base station is two-way on the one hand, and its output connects the FP laser of optical-electric module, the road port that closes that input connects the radio frequency multi-path power divider on the other hand; Four minutes road ports of radio frequency multi-path power divider connect respectively four PIN photoelectric tubes of optical-electric module; The FP laser of optical-electric module with are connected a PIN photoelectric tube and are connected with corresponding minute road port of Coarse Wave Division Multiplexer respectively; The road port that closes that closes road port connection light path power splitter of Coarse Wave Division Multiplexer; Four minutes road ports of light path power splitter connect respectively an end of described four modulation /demodulation transceiver modules by four trunk optical fibers; Four modulation /demodulation transceiver modules other end separately connects LNA of difference, power amplification integrated radio frequency power amplification module; Four LNA, the power amplification integrated radio frequency power amplification module other ends separately connect respectively an indoor radio-frequency (RF) passive distribution system network.
The operation principle of above-mentioned optical fiber direct amplification machine system is described as follows:
At base station machine room, downlink radio-frequency signal is coupled into the near-end radio frequency duplexer by feeder line, radiofrequency signal is modulated the 1550nm light wave of FP laser, light carrier after the modulation is by the 1550nm port of five-port Coarse Wave Division Multiplexer, again through four tunnel light path power splitters, be transferred to different remote terminations by four single mode single-core fibers respectively, survey through the PIN of modulation /demodulation transceiver module photoelectric tube, again through LNA, the radio frequency amplifying unit (PA) of power amplification integrated radio frequency power amplification module enters different indoor radio-frequency (RF) passive distribution system networks and carries out indoor coverage of signal.
Hold in community, up radiofrequency signal is sent to LNA by indoor radio-frequency (RF) passive distribution system network signal, the radio frequency LNA unit (LAN) of power amplification integrated radio frequency power amplification module amplifies, Distributed Feedback Laser through the modulation /demodulation transceiver module is modulated to radiofrequency signal on the light carrier again, multichannel different-waveband (1310nm after the modulation, 1330nm, 1350nm, optical carrier 1370nm) is transferred to the analog optical fiber near-end machine by trunk optical fiber, close the road in the five-port Coarse Wave Division Multiplexer through the light path power splitter, demultiplexing function through Coarse Wave Division Multiplexer, filtering goes out different frequency range (1310nm, 1330nm, 1350nm, optical carrier 1370nm), four road optical carriers demodulate radiofrequency signal by different PIN photoelectric tubes, close the road by radio frequency four road power splitters and be coupled to the base station end through radio frequency duplexer after the filtering appropriateness is amplified.
The beneficial effects of the utility model are: a. realizes the multichannel distribution; B. the signal multichannel is distributed, and its upstream noise can not produce the base station and disturb, and can overcome present engineering is dragged many upstream noises interference base station with machine one problem; C. adopt a FP laser and four PIN photoelectric tubes to form the structure of an optical module in the near-end machine, its four optical modules being comprised of four FP lasers and four PIN photoelectric tubes of comparing have at cost and obviously have low-cost advantage; D. this structural design is to drag four structures, in the situation of link power budget license, can realize that one drags six, one to drag eight structure networkings equally.
Claims (5)
1. one kind one is dragged analog optical fiber direct amplification machine system, it is characterized in that, comprising: radio frequency duplexer, be connected with the base station is two-way on the one hand, and output connects the FP laser of optical-electric module, the road port that closes that input connects the radio frequency multi-path power divider on the other hand; The radio frequency multi-path power divider, its each minute road port connect respectively the PIN photoelectric tube of optical-electric module; Optical-electric module comprises FP laser and several PIN photoelectric tubes, is connected with corresponding minute road port of Coarse Wave Division Multiplexer respectively; Coarse Wave Division Multiplexer, it closes the road port that closes that road port connects the light path power splitter; The light path power splitter, its each minute road port connect respectively an end of a modulation /demodulation transceiver module by trunk optical fiber; Several modulation /demodulation transceiver modules, the other end separately connects a LNA, power amplification integrated radio frequency power amplification module; Several LNA, power amplification integrated radio frequency power amplification module, the other end separately connects an indoor radio-frequency (RF) passive distribution system network.
2. according to claim 1 one drag analog optical fiber direct amplification machine system, it is characterized in that, described trunk optical fiber adopts the single mode single-core fiber.
3. according to claim 1 one drag analog optical fiber direct amplification machine system, it is characterized in that, described modulation /demodulation transceiver module is made of a Distributed Feedback Laser and a PIN photoelectric tube.
4. according to claim 1 one drag analog optical fiber direct amplification machine system, it is characterized in that, described power amplification integrated radio frequency power amplification module is to be made of descending radio frequency amplifying unit (PA) and up radio frequency LNA unit (LAN).
5. drag analog optical fiber direct amplification machine system to 4 any one described according to claim 1, it is characterized in that, described optical-electric module has four PIN photoelectric tubes of a FP laser; Correspondingly, the light path power splitter adopts four power splitters, and the radio frequency multi-path power divider is radio frequency four road power splitters, and modulation /demodulation transceiver module and LNA, power amplification integrated radio frequency power amplification module are four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220119232 CN202737866U (en) | 2012-03-27 | 2012-03-27 | Multi-split simulation fiber repeater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220119232 CN202737866U (en) | 2012-03-27 | 2012-03-27 | Multi-split simulation fiber repeater system |
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| Publication Number | Publication Date |
|---|---|
| CN202737866U true CN202737866U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220119232 Expired - Fee Related CN202737866U (en) | 2012-03-27 | 2012-03-27 | Multi-split simulation fiber repeater system |
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| CN (1) | CN202737866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10411987B2 (en) * | 2014-11-24 | 2019-09-10 | Zte Corporation | Signaling monitoring method and system |
-
2012
- 2012-03-27 CN CN 201220119232 patent/CN202737866U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10411987B2 (en) * | 2014-11-24 | 2019-09-10 | Zte Corporation | Signaling monitoring method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180327 |