CN201550122U - Optically controlled optical receiver adopting automatic gain control - Google Patents
Optically controlled optical receiver adopting automatic gain control Download PDFInfo
- Publication number
- CN201550122U CN201550122U CN2009200753621U CN200920075362U CN201550122U CN 201550122 U CN201550122 U CN 201550122U CN 2009200753621 U CN2009200753621 U CN 2009200753621U CN 200920075362 U CN200920075362 U CN 200920075362U CN 201550122 U CN201550122 U CN 201550122U
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- control circuit
- digital
- automatic gain
- amplifier
- gain control
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Abstract
The utility model discloses an optically controlled optical receiver adopting automatic gain control. The optical receiver comprises a photoelectric converter, a magnifier set, an automatic gain control circuit, a digital attenuation control circuit and a digital equalizing circuit, wherein, the output terminal of the photoelectric converter and the input terminal of the automatic gain control circuit are connected with a first-stage magnifier IC1; the output terminal of the automatic gain control circuit is connected with the digital attenuation control circuit through a second-stage magnifier IC2; the digital attenuation control circuit is connected with the digital equalizing circuit; the output terminal of the digital equalizing circuit is connected with a third-stage IC3 and an AMP magnifier; the output of the AMP magnifier is connected with an electrically controlled attenuator, and is output through a feed opening and two output ports after being monitored; and the automatic gain control circuit, the digital attenuation control circuit and the digital equalizing circuit are connected with a CPU control circuit at the same time. The utility model has the advantages of high index, high electrical level, low distortion, low power consumption, super-low power receiving, and the like.
Description
Technical field
The utility model relates to a kind of optical receiver, more particularly, relates to a kind of light-operated Gain Automatic control optical receiver.
Background technology
In EPON based on Ethernet, require optical receiver input optical power for-7dBm～-dynamic range of 1dBm in, the output signal level of optical receiver changes and is not more than 2dB, therefore requires optical receiver to have enough wide gain control range; Existing receiver exists problems such as range of receiving is little, power does not have demonstration, output level is uncontrollable, distortion is high, plug-in unit is too many, construction inconvenient debugging.
Summary of the invention
In order to solve the deficiencies in the prior art, the utility model provides a kind of light-operated Gain Automatic control optical receiver with advantages such as wide, the digital demonstration of range of receiving, low distortion, low-power consumption high level.
The purpose of this utility model realizes by the following technical solutions:
Light-operated Gain Automatic control optical receiver, comprise optical-electrical converter, the amplifier group, automatic gain control circuit, the numeral attenuation control circuit, digital equalization circuits, the output of optical-electrical converter connects first order amplifier IC1, the input of automatic gain control circuit connects first order amplifier IC1, the output of automatic gain control circuit is connected with digital attenuation control circuit by second level amplifier IC2, the numeral attenuation control circuit connects digital equalization circuits, the digital equalization circuits output connects third level amplifier IC3 and AMP amplifier, the output of AMP amplifier is connected with electrically controlled attenuator, export automatic gain control circuit through monitoring by feed mouth or two delivery outlets, the numeral attenuation control circuit, digital equalization circuits connects cpu control circuit simultaneously.
Preferably, described amplifier model is ACA2407E, and described cpu chip model is Pe4304.
Described cpu control circuit, controlling automatic gain control circuit, digital attenuation control circuit, digital equalization circuits simultaneously, and be connected with keyboard, nixie display, acoustic alarm and functional indicator light, can carry out luminous power, decay and balanced the demonstration in real time, the luminous power indication range is: less than-9～and greater than 2dBm, the decay indication range is: 0～20db/ shelves, balanced indication range is: 0～10dB.
Described automatic gain control circuit has been mainly used to increase the dynamic range of optical receiver, and makes the output of optical receiver keep constant.
Owing to adopted above technical scheme, the utlity model has following beneficial effect:
1, adopts the CPU control technology, in real time random acquisition and the various parameters of detection;
2, adopt light-operated AGC treatment technology, improved the reliability of complete machine;
3, CPU is connected with keyboard, realizes various parameter keyboard regulation technologies, convenient debugging construction;
4, Du Te sound and light of alarm can judge fast and accurately;
5, ultra low power reception-10～+ 2dBm;
6, high target, high level, low distortion, low-power consumption.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing:
See accompanying drawing 1, light-operated Gain Automatic control optical receiver, comprise optical-electrical converter, the amplifier group, automatic gain control circuit, the numeral attenuation control circuit, digital equalization circuits, the output of optical-electrical converter connects first order amplifier IC1, the input of automatic gain control circuit connects first order amplifier IC1, the output of automatic gain control circuit is connected with digital attenuation control circuit by second level amplifier IC2, the numeral attenuation control circuit connects digital equalization circuits, the digital equalization circuits output connects third level amplifier IC3 and AMP amplifier, the output of AMP amplifier is connected with electrically controlled attenuator, export automatic gain control circuit through monitoring by feed mouth or two delivery outlets, the numeral attenuation control circuit, digital equalization circuits connects cpu control circuit simultaneously.
After optical fiber inserts, optical-electrical converter converts the luminous power that receives to radio-frequency voltage, behind first order amplifier IC1, enter automatic gain control circuit, carry out sending into second level amplifier IC2 after the gain controlling, auto-gain circuit connects CPU simultaneously, and monitored in real time by CPU, after second level amplifier IC2 amplification, enter digital attenuation control circuit and digital equalization circuits more respectively, realize the control of gain and the selection of the way of output respectively, the output after the decay monitoring by third level amplifier and AMP amplifier at last.
Further, described amplifier model is ACA2407E, and described cpu chip model is Pe4304.
Further, described CPU is also monitoring digital attenuation control circuit and digital equalization circuits simultaneously, and be connected with keyboard, digital demonstration, alarm and functional indicator light, realize CPU control in real time and random acquisition and detect various parameters, being provided with of various parameters all can be adopted the keyboard debugging, and the debugging construction is convenient, and unique sound and light alarm can judge rapidly accurately, adopt digital the demonstration, can accurately show various parameters.
Claims (4)
1. light-operated Gain Automatic control optical receiver, comprise optical-electrical converter, the amplifier group, automatic gain control circuit, the numeral attenuation control circuit, digital equalization circuits, it is characterized in that, the output of optical-electrical converter connects first order amplifier IC1, the input of automatic gain control circuit connects first order amplifier IC1, the output of automatic gain control circuit is connected with digital attenuation control circuit by second level amplifier IC2, the numeral attenuation control circuit connects digital equalization circuits, the digital equalization circuits output connects third level amplifier IC3 and AMP amplifier, the output of AMP amplifier also is connected with electrically controlled attenuator and monitoring, is exported by feed mouth or two delivery outlets through monitoring.
2. light-operated Gain Automatic control optical receiver according to claim 1 is characterized in that described CPU controls automatic gain control circuit, digital attenuation control circuit, digital equalization circuits simultaneously, and is connected with input and display device.
3. light-operated Gain Automatic control optical receiver according to claim 1 is characterized in that described automatic gain control circuit is arranged between first order amplifier and the second level amplifier.
4. light-operated Gain Automatic control optical receiver according to claim 1 is characterized in that described amplifier model is ACA2407E, and described cpu chip model is Pe4304.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200753621U CN201550122U (en) | 2009-07-28 | 2009-07-28 | Optically controlled optical receiver adopting automatic gain control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200753621U CN201550122U (en) | 2009-07-28 | 2009-07-28 | Optically controlled optical receiver adopting automatic gain control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201550122U true CN201550122U (en) | 2010-08-11 |
Family
ID=42605306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200753621U Expired - Fee Related CN201550122U (en) | 2009-07-28 | 2009-07-28 | Optically controlled optical receiver adopting automatic gain control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201550122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023574A (en) * | 2012-12-21 | 2013-04-03 | 天津光拓科技有限公司 | Multifunctional optical fiber amplifier control system |
-
2009
- 2009-07-28 CN CN2009200753621U patent/CN201550122U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023574A (en) * | 2012-12-21 | 2013-04-03 | 天津光拓科技有限公司 | Multifunctional optical fiber amplifier control 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 |
Granted publication date: 20100811 Termination date: 20150728 |
|
| EXPY | Termination of patent right or utility model |