CN203896355U - Simulation fiber amplifier used for cable television system - Google Patents
Simulation fiber amplifier used for cable television system Download PDFInfo
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- CN203896355U CN203896355U CN201420156453.9U CN201420156453U CN203896355U CN 203896355 U CN203896355 U CN 203896355U CN 201420156453 U CN201420156453 U CN 201420156453U CN 203896355 U CN203896355 U CN 203896355U
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Abstract
The utility model relates to a cable television system, and discloses a simulation fiber amplifier used for a cable television system. The simulation fiber amplifier comprises an er-doped fiber, and an optical signal input device and an optical signal output device which are connected with two ends of the er-doped fiber respectively. The optical signal input device comprises a first wavelength division multiplexing device and a first pump laser. The optical signal output device comprises a second wavelength division multiplexing device and a second pump laser. The first wavelength division multiplexing device and the second wavelength division multiplexing device are connected with the er-doped fiber. The optical signal input device and the optical signal output device are connected with a microprocessor. The simulation fiber amplifier used for a cable television system is provided. The simulation fiber amplifier is employed, and relay amplification of optical signals and data is achieved through the er-doped fiber during the fiber transmission process. The problem of signal attenuation of transmission of an optical signal on a fiber during the running process of the cable television system is solved effectively.
Description
Technical field
The utility model relates to a kind of cable television system, relates in particular to a kind of analog optical fiber amplifier for cable television system.
Background technology
At present, in cable television system running, when handle contains television image signal, when digital television signal and data (or packed data) signal passes through Optical Fiber Transmission, increase along with distance, light signal transmits and has attenuation on optical fiber, cannot normally even there is the situation of Transmission in transmission when attenuation reaches certain thresholding, the non-relay light amplification of traditional cable television system, cannot carry out the remote transmission of signal and data, after certain distance, must re-establish a front end, this mode is very large on the delivery quality impact of signal and data, and cost is high again.Analog optical fiber amplifier is exactly to amplify in order to solve signal and data relay in cable television system running the problem transmitting.
Summary of the invention
The shortcoming that the utility model exists attenuation when light signal transmits on optical fiber in cable television system running for prior art and signal and transfer of data interruption cannot normally even occur in transmission when attenuation reaches certain thresholding, provides a kind of signal and data has been realized to the analog optical fiber amplifier for cable television system that relaying amplifies transmission in Optical Fiber Transmission.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of analog optical fiber amplifier for cable television system, comprise Er-doped fiber and the optical signal input device being connected respectively with Er-doped fiber two ends and light signal output device, optical signal input device comprises first wave division multiplexer and the first pump laser being connected with first wave division multiplexer, light signal output device comprises Second Wave division multiplexer and the second pump laser being connected with Second Wave division multiplexer, and first wave division multiplexer is all connected with Er-doped fiber with Second Wave division multiplexer; Optical signal input device is all connected with microprocessor with light signal output device.
Light signal enters optical signal input device, through first wave division multiplexer, then by Er-doped fiber, the light signal of multiplexing effect is amplified, and carries out separation again by Second Wave division multiplexer, the light signal then amplifying from the output of light signal output device.The ground state electronics of the first pump laser and the second pump laser optical excitation signal, to upper state, is guaranteed light signal energy high-speed transfer.The analog optical fiber amplifying circuit that optical signal input device, Er-doped fiber and light signal output device form comprises light signal sample circuit, photoelectric switching circuit, automatic power control circuitry, automatic temp. controlling circuit and automatic gain control circuit, each circuit is realized each running parameter of signal is processed, and microprocessor carries out transfer of data and processing to the running parameter of the light signal of input and output.
As preferably, optical signal input device also comprises the first optical isolator being connected with first wave division multiplexer, the first coupler being connected with the first optical isolator, the first photo-detector being connected with the first coupler, the first power control module, the first current control module and the first temperature control modules, the first photo-detector is connected with microprocessor, the first power control module, the first current control module is all connected with the first pump laser with the first temperature control modules, the first power control module, the first current control module and the first temperature control modules are connected in parallel between any two.Light signal enters after optical signal input device, successively through the first coupler,
The signal of the first optical isolator and first wave division multiplexer is processed, and the first photo-detector detects the light signal of input, and the ground state electronics of the first pump laser optical excitation signal, to upper state, is guaranteed light signal energy high-speed transfer; The parameters of the light signal of the first power control module, the first current control module and the first temperature control modules control inputs, makes the light signal of input more stable, and by microprocessor, the light signal of input is carried out to two-way data processing and transmission.
As preferably, light signal output device also comprises the second optical isolator being connected with Second Wave division multiplexer, the optical filter being connected with the second optical isolator, the second coupler being connected with optical filter, the second photo-detector being connected with the second coupler, the second power control module, the second current control module and the second temperature control modules, the second photo-detector is connected with microprocessor, the second power control module, the second current control module is all connected with the second pump laser with the second temperature control modules, the second power control module, the second current control module and the second temperature control modules are connected in parallel between any two.Light signal after optical signal input device is processed passes through at a high speed Er-doped fiber, from Er-doped fiber enters light signal output device, signal through Second Wave division multiplexer, the second optical isolator, optical filter and the second coupler is processed, the second photo-detector detects the light signal of output, the ground state electronics of the second pump laser optical excitation signal, to upper state, is guaranteed light signal energy high-speed transfer; The second power control module, the second current control module and the second temperature control modules are controlled the parameters of the light signal of output, make the light signal of output more stable, and by microprocessor, the light signal of output are carried out to two-way data processing and transmission.
As preferably, on microprocessor, be provided with LAN interface and RS232 interface, signal and data can be from LAN interface and the input and output of RS232 interface.
The utility model is owing to having adopted above technical scheme, there is significant technique effect: adopt analog optical fiber amplifier, the relaying of realizing light signal and data by Er-doped fiber in Optical Fiber Transmission process amplifies, and has effectively solved light signal in cable television system running and on optical fiber, has transmitted the problem that has signal loss.
Accompanying drawing explanation
Fig. 1 is the operation principle block diagram of the utility model analog optical fiber amplifier embodiment.
The toponym that in accompanying drawing, each number designation refers to is as follows: wherein 1-microprocessor, 2-photo-detector, 3-coupler, 4-temperature control modules, 5-current control module, 6-optical filter, 7-pump laser, 8-optical isolator, 9-power control module, 10-wavelength division multiplexer, 11-Er-doped fiber, 12-LAN interface, 13-RS232 interface.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
A kind of analog optical fiber amplifier for cable television system, as shown in Figure 1, comprise Er-doped fiber 12 and the optical signal input device 16 and the light signal output device 11 that are connected respectively with Er-doped fiber 12 two ends, optical signal input device 16 comprises first wave division multiplexer 14, the first pump laser 15 being connected with first wave division multiplexer 14, the first optical isolator 17 being connected with first wave division multiplexer 14, the first coupler 20 being connected with the first optical isolator 17, the first photo-detector 21 being connected with the first coupler 20, the first power control module 19, the first current control module 18 and the first temperature control modules 13, the first photo-detector 21 is connected with microprocessor 1, the first power control module 19, the first current control module 18 is all connected with the first pump laser 15 with the first temperature control modules 13, the first power control module 19, the first current control module 18 and the first temperature control modules 13 are connected in parallel between any two.Light signal output device 11 comprises Second Wave division multiplexer 10, the second pump laser 7 being connected with Second Wave division multiplexer 10, the second optical isolator 8 being connected with Second Wave division multiplexer 10, the optical filter 6 being connected with the second optical isolator 8, the second coupler 3 being connected with optical filter 6, the second photo-detector 2 being connected with the second coupler 3, the second power control module 9, the second current control module 5 and the second temperature control modules 4, the second photo-detector 2 is connected with microprocessor 1, the second power control module 9, the second current control module 5 is all connected with the second pump laser 7 with the second temperature control modules 4, the second power control module 9, the second current control module 5 and the second temperature control modules 4 are connected in parallel between any two.First wave division multiplexer 14 is all connected with Er-doped fiber 12 with Second Wave division multiplexer 10, and optical signal input device 16 is all connected with microprocessor 1 with light signal output device 11, is provided with LAN interface 22 and RS232 interface 23 on microprocessor 1.
Light signal enters after optical signal input device 16, signal through the first coupler 20, the first optical isolator 17 and first wave division multiplexer 14 is processed, by Er-doped fiber 12, the light signal of multiplexing effect is amplified again, through Second Wave division multiplexer 10, the second optical isolator 8, optical filter 6 and the second coupler 3, carry out again separated, the light signal then amplifying from 11 outputs of light signal output device.The first photo-detector 21 and the second photo-detector 2 detect the light signal of input and output respectively, the first pump laser 15 and the second pump laser 7 excite respectively the ground state electronics of the light signal of inputting the light signal of Er-doped fiber 12 and exporting from Er-doped fiber 12 to upper state, guarantee light signal energy high-speed transfer; The parameters of the light signal of the first power control module 19, the first current control module 18 and the first temperature control modules 13 control inputs, makes the light signal of input more stable; The second power control module 9, the second current control module 5 and the second temperature control modules 4 are controlled the parameters of the light signal of output, make the light signal of output more stable.Optical signal input device 16, the analog optical fiber amplifying circuit that Er-doped fiber 12 and light signal output device 11 form comprises light signal sample circuit, photoelectric switching circuit, automatic power control circuitry, automatic temp. controlling circuit and automatic gain control circuit, each circuit is realized each running parameter of signal is processed, the running parameter of the light signal of 1 pair of input and output of microprocessor carries out transfer of data and processing, ideal signal after treatment and data are from LAN interface 22 and 23 outputs of RS232 interface, and can also realize adjustment signal parameter from LAN interface 22 and RS232 interface 23 input data.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (1)
1. the analog optical fiber amplifier for cable television system, comprise Er-doped fiber (12) and the optical signal input device (16) and the light signal output device (11) that are connected respectively with Er-doped fiber (12) two ends, it is characterized in that: optical signal input device (16) comprises first wave division multiplexer (14) and the first pump laser (15) being connected with first wave division multiplexer (14), light signal output device (11) comprises Second Wave division multiplexer (10) and the second pump laser (7) being connected with Second Wave division multiplexer (10), first wave division multiplexer (14) is all connected with Er-doped fiber (12) with Second Wave division multiplexer (10), optical signal input device (16) is all connected with microprocessor (1) with light signal output device (11), the analog optical fiber amplifying circuit that optical signal input device (16), Er-doped fiber (12) and light signal output device (11) form comprises light signal sample circuit, photoelectric switching circuit, automatic power control circuitry, automatic temp. controlling circuit and automatic gain control circuit, each circuit is realized each running parameter of signal is processed, and microprocessor (1) carries out transfer of data and processing to the running parameter of the light signal of input and output, optical signal input device (16) also comprises the first optical isolator (17) being connected with first wave division multiplexer (14), the first coupler (20) being connected with the first optical isolator (17), the first photo-detector (21) being connected with the first coupler (20), the first power control module (19), the first current control module (18) and the first temperature control modules (13), the first photo-detector (21) is connected with microprocessor (1), the first power control module (19), the first current control module (18) is all connected with the first pump laser (15) with the first temperature control modules (13), the first power control module (19), the first current control module (18) and the first temperature control modules (13) are connected in parallel between any two, light signal output device (11) also comprises the second optical isolator (8) being connected with Second Wave division multiplexer (10), the optical filter (6) being connected with the second optical isolator (8), the second coupler (3) that optical filter (6) connects, the second photo-detector (2) being connected with the second coupler (3), the second power control module (9), the second current control module (5) and the second temperature control modules (4), the second photo-detector (2) is connected with microprocessor (1), the second power control module (9), the second current control module (5) is all connected with the second pump laser (7) with the second temperature control modules (4), the second power control module (9), the second current control module (5) and the second temperature control modules (4) are connected in parallel between any two, light signal enters after optical signal input device (16), signal through the first coupler (20), the first optical isolator (17) and first wave division multiplexer (14) is processed, by Er-doped fiber (12), the light signal of multiplexing effect is amplified again, pass through again Second Wave division multiplexer (10), the second optical isolator (8), optical filter (6) and the second coupler (3) carry out separated, the light signal then amplifying from light signal output device (11) output, on microprocessor (1), be provided with LAN interface (22) and RS232 (23) interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156453.9U CN203896355U (en) | 2014-04-01 | 2014-04-01 | Simulation fiber amplifier used for cable television system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156453.9U CN203896355U (en) | 2014-04-01 | 2014-04-01 | Simulation fiber amplifier used for cable television system |
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| CN203896355U true CN203896355U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420156453.9U Expired - Fee Related CN203896355U (en) | 2014-04-01 | 2014-04-01 | Simulation fiber amplifier used for cable television system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330326A (en) * | 2016-08-18 | 2017-01-11 | 桂林创研科技有限公司 | Erbium-doped optical fiber amplifier |
| CN108390240A (en) * | 2018-01-02 | 2018-08-10 | 杭州万隆光电设备股份有限公司 | A kind of cable television fiber amplifier |
| CN110417471A (en) * | 2019-07-04 | 2019-11-05 | 国网江西省电力有限公司信息通信分公司 | A kind of can believe based on optical fiber passes system altogether |
-
2014
- 2014-04-01 CN CN201420156453.9U patent/CN203896355U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330326A (en) * | 2016-08-18 | 2017-01-11 | 桂林创研科技有限公司 | Erbium-doped optical fiber amplifier |
| CN108390240A (en) * | 2018-01-02 | 2018-08-10 | 杭州万隆光电设备股份有限公司 | A kind of cable television fiber amplifier |
| CN110417471A (en) * | 2019-07-04 | 2019-11-05 | 国网江西省电力有限公司信息通信分公司 | A kind of can believe based on optical fiber passes system altogether |
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| 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: 20141022 Termination date: 20190401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |