CN203368488U - Modulated laser emitter - Google Patents
Modulated laser emitter Download PDFInfo
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- CN203368488U CN203368488U CN 201320465384 CN201320465384U CN203368488U CN 203368488 U CN203368488 U CN 203368488U CN 201320465384 CN201320465384 CN 201320465384 CN 201320465384 U CN201320465384 U CN 201320465384U CN 203368488 U CN203368488 U CN 203368488U
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- radio
- laser emitter
- processing module
- modulated laser
- signal
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Abstract
The utility model discloses a modulated laser emitter which comprises a radio-frequency signal processing module used for receiving and processing radio-frequency signals, an optical transmitter module which is connected with the radio-frequency signal processing module and comprises a laser and optical fiber, a microprocessor which is both connected with the radio-frequency signal processing module and the optical transmitter module and is used for module monitoring and control data transmission, a power supply interface used for powering each module, a data communication interface used as an interface for data communication between the microprocessor and an optical fiber monitoring and control system, and an adapter interface used for combination with the optical fiber monitoring and control system through a slot in the optical fiber monitoring and control system in a plug-in manner, wherein the laser is used for receiving the radio-frequency signals processed by the radio-frequency signal processing module for photovoltaic conversion and producing optical signals to be sent; and the optical signals are emitted by the optical fiber; and power supply, data transmission and control functions are all realized through a backplane bus of a crate system. The modulated laser emitter is small in size and can work cooperatively with a reverse and forward module.
Description
Technical field
The utility model relates to communication technical field, relates in particular to a kind of modulated laser emitter.
Background technology
Due to the data in existing and New-deployed Network, the traffic carrying capacity of sound and image constantly increases, and the cable TV operator expands its hybrid fiber coax two way capacity of (HybridFiber-Coaxial is called for short HFC) just energetically.On the HFC optical platform, forward 1310nm transmission is generally carried out the transmission to analog and digital signal with short fiber (<40km), is typically the transmission of sub-headend to the light node.
At present, known 1310nm transmitter, be the standalone transmitter, and volume is very large, must independent external work, can not collaborative work with forward and reverse modular converter, and and the transmission distortion rate is higher, can not use computer software to carry out remote monitoring to it.Current transmitter, have a machine room area of taking large, the collaborative work ability, and signal transmission is of poor quality, can't realize the shortcoming of telemanagement.
The utility model content
The utility model provides a kind of modulated laser emitter, and volume is little, and the transmission distortion rate is low, also adopts plug and pull technology and forward and reverse module to be arranged in a cabinet, and collaborative work can be accepted computer software it is carried out to remote monitoring simultaneously.
A kind of modulated laser emitter that the utility model provides comprises:
Radio-frequency signal processing module, for receiving and process radiofrequency signal;
Light emission module, be connected with described radio-frequency signal processing module, comprises laser and optical fiber, described laser is for receiving the radiofrequency signal after described radio-frequency signal processing module is processed, carry out opto-electronic conversion, produce light signal to be sent, launch through described optical fiber;
Microprocessor, all be connected with described light emission module with described radio-frequency signal processing module, for realizing module monitors and control data transmission;
Power supply interface, for to each module for power supply;
Data communication interface, the interface that carries out data communication for described microprocessor and fiber-optic monitoring and control system;
Adaptable interface, be combined with fiber-optic monitoring and control system for adopting plug-in type groove position in fiber-optic monitoring and control system;
Wherein, power supply, transfer of data and control function all realize by the core bus of case system.
Preferably, described radio-frequency signal processing module comprises primary input circuit and auxiliary input circuit, wherein:
Described auxiliary input circuit receives and processes radiofrequency signal, generates the first radiofrequency signal;
Described primary input circuit receives and processes radiofrequency signal, generates the second radiofrequency signal; And the first radiofrequency signal is mixed with the second radiofrequency signal, generate the 3rd radio frequency signal and export laser to.
Preferably, the design of the input interface of described primary input circuit and auxiliary input circuit is identical.
Preferably, described auxiliary input circuit is provided with the signal attenuation control circuit.
Preferably, described primary input circuit is provided with automatic gain control circuit.
Preferably, described primary input circuit is provided with the broadband rf signal level sensitive circuit, for detection of input signal and output signal, and exports testing result to described microprocessor.
Preferably, described radio-frequency signal processing module also is provided with following one or more circuit:
Automatic gain control circuit, for obtaining stable degree of light modulation;
Automatic temp. controlling circuit, for the stabilized lasers actuator temperature;
Automatic power control circuitry, for obtaining stable luminous power.
Preferably, described laser adopts Multiple Quantum Well and/or distributed feedback laser.
Preferably, described light emission module also is provided with predistortion circuit.
Preferably, described modulated laser emitter also comprises:
Test interface, detected for the input signal to described radio-frequency signal processing module, comprises analog signal input port, digital signal input port, and/or the radio frequency signals drive input port.
Compared with prior art, the utlity model has following advantage:
In the utility model, design dexterously the modulated laser emitter and possess plug-and-play feature, utilize fiber-optic monitoring and control system (OCM) core bus, realize power supply, transfer of data and control function, easily with fiber-optic monitoring and control system combination, make the modulated laser emitter can be positioned in the cabinet of fiber-optic monitoring and control system, reduced the space that integral product takies, make the user experience of product better.In addition, because the core bus of the utility model design power supply, transfer of data and control functional utilization fiber-optic monitoring and control system is realized, therefore can with fiber-optic monitoring and control system in forward and reverse module realize compatible, collaborative work.
In the utility model, also by microprocessor, control, realized the overall monitor to the module status parameter.Provide possibility for using computer software to carry out remote monitoring to it.
In the utility model, also adopt Multiple Quantum Well (MQW), distributed feed-back (DFB) laser technique, be designed with the laser closing function.
In the utility model, also, by using wide-band linearity amplifying technique and photoelectricity design, realized the transmission of high-quality digital and analog signaling on fiber optic network.Design RF predistortion circuit and linearization block can provide outstanding CTB and CSO index in up to the 862MHz scope.
The utility model is applicable to community antenna television (CATV) (MATV), limited line TV (CATV) and closed-circuit television (CCTV) broadband application.
The accompanying drawing explanation
Fig. 1 is a kind of modulated laser emitter of the utility model schematic diagram.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is elaborated.
A kind of modulated laser emitter is provided in the utility model, has there is an adaptable interface, can adopt plug-in type groove position in fiber-optic monitoring and control system to be combined with fiber-optic monitoring and control system, thereby be arranged in the cabinet of fiber-optic monitoring and control system.
Particularly, in order to realize that the utility model modulated laser emitter can work and well compatible with fiber-optic monitoring and control system, design the utility model modulated laser emitter as shown in Figure 1, comprise: radio-frequency signal processing module 1, light emission module 2, microprocessor 3, power supply interface 4 and data communication interface 5, wherein:
Radio-frequency signal processing module 1, for receiving and process radiofrequency signal.
Light emission module 2, be connected with described radio-frequency signal processing module 1, comprises laser and optical fiber, described laser is for receiving the radiofrequency signal after described radio-frequency signal processing module is processed, carry out opto-electronic conversion, produce light signal to be sent, launch through described optical fiber.
Microprocessor 3, all be connected with described light emission module 2 with described radio-frequency signal processing module 1, for realizing module monitors and control data transmission.
Power supply interface 4, for to each module for power supply.For example, direct current 12V power supply etc.
Data communication interface 5, the interface that carries out data communication for described microprocessor 3 and fiber-optic monitoring and control system.
Wherein, power supply, transfer of data and control function all realize by the core bus of case system.Described bus can be 8 buses or 16 buses, can be also the other types bus.
In the utility model, design dexterously the modulated laser emitter and possess plug-and-play feature, utilize fiber-optic monitoring and control system core bus, realize power supply, transfer of data and control function, easily with fiber-optic monitoring and control system (OCM) combination, make the modulated laser emitter can be positioned in the cabinet of fiber-optic monitoring and control system, reduced the space that integral product takies, make the user experience of product better.In addition, because the core bus of the utility model design power supply, transfer of data and control functional utilization fiber-optic monitoring and control system is realized, therefore can with fiber-optic monitoring and control system in forward and reverse module realize compatible, collaborative work.
Further, described radio-frequency signal processing module 1 comprises primary input circuit 11 and auxiliary input circuit 12, wherein:
Described auxiliary input circuit 12 receives and processes radiofrequency signal, generates the first radiofrequency signal;
Described primary input circuit 11 receives and processes radiofrequency signal, generates the second radiofrequency signal; And the first radiofrequency signal is mixed with the second radiofrequency signal, generate the 3rd radio frequency signal and export laser to.
Preferably, the design of the input interface of described primary input circuit 11 and auxiliary input circuit 12 is identical.Thereby effectively reduce the requirement to input signal.
Preferably, described auxiliary input circuit 12 is provided with the signal attenuation control circuit.Allow manually to realize signal attenuation.
Preferably, described primary input circuit 11 is provided with automatic gain control circuit.
Preferably, described primary input circuit 11 is provided with the broadband rf signal level sensitive circuit, for detection of input signal and output signal, and exports testing result to described microprocessor.Wherein, above-mentioned input signal inputs to the signal in described primary input circuit 11.Described output signal refers to that described primary input circuit 11 exports to the signal of laser.
Preferably, described radio-frequency signal processing module 1 also is provided with following one or more circuit:
Automatic gain control circuit, for obtaining stable degree of light modulation;
Automatic temp. controlling circuit, for the stabilized lasers actuator temperature;
Automatic power control circuitry, for obtaining stable luminous power.
The utility model, by the design to radio-frequency signal processing module 1, can effectively solve the problem that the transmission distortion rate is high.
Preferably, by the monitoring of microprocessor 3, also can solve the problem that the transmission distortion rate is high.
Preferably, in order to solve the problem that the transmission distortion rate is high, can also design described laser and adopt Multiple Quantum Well and/or distributed feedback laser.
Preferably, in order to solve the problem that the transmission distortion rate is high, can also design described light emission module 2 and also be provided with predistortion circuit.To guarantee the low distortion characteristic of as many as 110 channel broadband signals.
Preferably, radio-frequency signal processing module 1 input signal bandwidth 45MHz to 1000MHz.Acquiescence incoming level 25dBmV/ch; Light emission module can be processed the signal of input range from single channel 10dBmV to 64 channel 30dBmV/ch.
Preferably, at the front panel of described modulated laser emitter design test interface also, for the input signal to described radio-frequency signal processing module, detected, comprised analog signal input port, digital signal input port, and/or the radio frequency signals drive input port.For example, can be-20dB analog input interface ,-the 20dB digital input interface and-20dB laser radio frequency signals drive input.
Above disclosed be only several specific embodiment of the present utility model, still, the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (10)
1. a modulated laser emitter, is characterized in that, comprising:
Radio-frequency signal processing module, for receiving and process radiofrequency signal;
Light emission module, be connected with described radio-frequency signal processing module, comprises laser and optical fiber, described laser is for receiving the radiofrequency signal after described radio-frequency signal processing module is processed, carry out opto-electronic conversion, produce light signal to be sent, launch through described optical fiber;
Microprocessor, all be connected with described light emission module with described radio-frequency signal processing module, for realizing module monitors and control data transmission;
Power supply interface, for to each module for power supply;
Data communication interface, the interface that carries out data communication for described microprocessor and fiber-optic monitoring and control system;
Adaptable interface, be combined with fiber-optic monitoring and control system for adopting plug-in type groove position in fiber-optic monitoring and control system;
Wherein, power supply, transfer of data and control function all realize by the core bus of case system.
2. modulated laser emitter as claimed in claim 1, is characterized in that, described radio-frequency signal processing module comprises primary input circuit and auxiliary input circuit, wherein:
Described auxiliary input circuit receives and processes radiofrequency signal, generates the first radiofrequency signal;
Described primary input circuit receives and processes radiofrequency signal, generates the second radiofrequency signal; And the first radiofrequency signal is mixed with the second radiofrequency signal, generate the 3rd radio frequency signal and export laser to.
3. modulated laser emitter as claimed in claim 2 is characterized in that:
The input interface design of described primary input circuit and auxiliary input circuit is identical.
4. modulated laser emitter as claimed in claim 2 or claim 3 is characterized in that:
Described auxiliary input circuit is provided with the signal attenuation control circuit.
5. modulated laser emitter as claimed in claim 2 or claim 3 is characterized in that:
Described primary input circuit is provided with automatic gain control circuit.
6. modulated laser emitter as claimed in claim 2 or claim 3 is characterized in that:
Described primary input circuit is provided with the broadband rf signal level sensitive circuit, for detection of input signal and output signal, and exports testing result to described microprocessor.
7. modulated laser emitter as claimed in claim 1, is characterized in that, described radio-frequency signal processing module also is provided with following one or more circuit:
Automatic gain control circuit, for obtaining stable degree of light modulation;
Automatic temp. controlling circuit, for the stabilized lasers actuator temperature;
Automatic power control circuitry, for obtaining stable luminous power.
8. modulated laser emitter as claimed in claim 1 is characterized in that:
Described laser adopts Multiple Quantum Well and/or distributed feedback laser.
9. modulated laser emitter as claimed in claim 1 is characterized in that:
Described light emission module also is provided with predistortion circuit.
10. modulated laser emitter as claimed in claim 1, is characterized in that, also comprises:
Test interface, detected for the input signal to described radio-frequency signal processing module, comprises analog signal input port, digital signal input port, and/or the radio frequency signals drive input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320465384 CN203368488U (en) | 2013-08-01 | 2013-08-01 | Modulated laser emitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320465384 CN203368488U (en) | 2013-08-01 | 2013-08-01 | Modulated laser emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368488U true CN203368488U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320465384 Expired - Fee Related CN203368488U (en) | 2013-08-01 | 2013-08-01 | Modulated laser emitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203368488U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049125A (en) * | 2015-04-29 | 2015-11-11 | 江苏通航电子科技网络有限公司 | Indoor light transmitter |
| CN105245285A (en) * | 2015-09-24 | 2016-01-13 | 江苏阿尔特光电科技有限公司 | Laser transmitter |
| CN108352894A (en) * | 2015-08-24 | 2018-07-31 | 瑞典爱立信有限公司 | The control of optical transmission in light-carried wireless electric system |
-
2013
- 2013-08-01 CN CN 201320465384 patent/CN203368488U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049125A (en) * | 2015-04-29 | 2015-11-11 | 江苏通航电子科技网络有限公司 | Indoor light transmitter |
| CN108352894A (en) * | 2015-08-24 | 2018-07-31 | 瑞典爱立信有限公司 | The control of optical transmission in light-carried wireless electric system |
| US10707962B2 (en) | 2015-08-24 | 2020-07-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Control of an optical transmitter in a radio over fibre system |
| CN108352894B (en) * | 2015-08-24 | 2020-12-11 | 瑞典爱立信有限公司 | Control of optical transmitters in radio-over-fiber systems |
| CN105245285A (en) * | 2015-09-24 | 2016-01-13 | 江苏阿尔特光电科技有限公司 | Laser transmitter |
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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 |
Granted publication date: 20131225 Termination date: 20150801 |
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| EXPY | Termination of patent right or utility model |