CN204334589U - Light AGC type optical receiver - Google Patents
Light AGC type optical receiver Download PDFInfo
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- CN204334589U CN204334589U CN201520000154.0U CN201520000154U CN204334589U CN 204334589 U CN204334589 U CN 204334589U CN 201520000154 U CN201520000154 U CN 201520000154U CN 204334589 U CN204334589 U CN 204334589U
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- amplifier
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- attenuator
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Abstract
The utility model discloses a kind of economical smooth AGC type optical receiver.It comprises opto-electronic conversion detector, third stage amplifier, AGC electrically controlled attenuator, ATT attenuator, equalizer, optical branching device, output interface, RF test point, operational amplifier, luminous power indicates, opto-electronic conversion detector concatenation operation amplifier and first order amplifier, operational amplifier connects luminous power instruction and AGC electrically controlled attenuator, AGC electrically controlled attenuator connects second level amplifier, second level amplifier connects ATT attenuator, ATT attenuator connects equalizer, equalizer connects third level amplifier, third level amplifier connects optical branching device, optical branching device connects output interface and RF test point.The utility model input optical power output level when-7dBm ~+2dBm remains unchanged, and instability, CTB and CSO change technical problem greatly with input optical power change to solve output level existing in prior art.
Description
Technical field
The utility model relates to a kind of optical receiver, particularly relates to a kind of economical smooth AGC type simulated CATV optical receiver of the common user end for HFC optical access network.
Background technology
In the optical transmission of information systems such as optical fiber communication, wireless signal optical transport, optical fiber cable TV, satellite television, carrier light receiver is an indispensable equipment, especially the carrier light receiver such as transmission of wireless signals, optical fiber cable TV, satellite television, to the level magnitudes of output signal, linear grade more has strict requirement.In wireless signal optical transport, optical fiber cable TV, satellite TV system, optical receiver must have good wide-band multicarrier wave property and sufficiently high dynamic range, can transmit television channel as much as possible and to adapt to different transmission ranges.Opto-electronic conversion detector, luminous power indicator light, amplifier, attenuator circuit and equalizer composition is generally all comprised in existing optical receiver.In currently available technology, also exist output level with input optical power change and the phenomenon of instability and CTB and CSO change greatly technical problem.On the basis of low-cost technologies, how to provide a kind of input optical power when changing in certain dynamic range, output level remains unchanged, simultaneously CTB and CSO keeps substantially constant economical light-operated AGC optical receiver, be solve that output level existing in prior art is unstable with input optical power change, CTB and CSO change greatly technical problem.
Utility model content
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, and when providing a kind of input optical power to change in certain dynamic range, output level remains unchanged, CTB and CSO keeps substantially constant economical smooth AGC type optical receiver simultaneously.
The technical scheme that the utility model adopts is: the utility model it comprise high-responsivity opto-electronic conversion detector, first order amplifier, second level amplifier, third level amplifier, AGC electrically controlled attenuator, ATT attenuator, equalizer, optical branching device, output interface, RF test point, operational amplifier, luminous power indicates, described high-responsivity opto-electronic conversion detector connects described operational amplifier and first order amplifier, described operational amplifier connects the instruction of described luminous power and AGC electrically controlled attenuator, described AGC electrically controlled attenuator connects described second level amplifier, described second level amplifier connects described ATT attenuator, described ATT attenuator connects described equalizer, described equalizer connects described third level amplifier, described third level amplifier connects described optical branching device, described optical branching device connects described output interface and RF test point.
The pre-amplifier part of described first order amplifier, second level amplifier, third level amplifier is paster GaAs device.
Described high-responsivity opto-electronic conversion detector input optical power is between-7dBm ~+2dBm, and described output interface level remains unchanged.
The luminous power size of described optical receiver shows one by one by described luminous power instruction.
In described operational amplifier, element circuit and AGC electrically controlled attenuator all adopt operational amplifier and diode component to complete.
The beneficial effects of the utility model are: because of the utility model, it comprises high-responsivity opto-electronic conversion detector, first order amplifier, second level amplifier, third level amplifier, AGC electrically controlled attenuator, ATT attenuator, equalizer, optical branching device, output interface, RF test point, operational amplifier, luminous power indicates, described high-responsivity opto-electronic conversion detector connects described operational amplifier and first order amplifier, described operational amplifier connects the instruction of described luminous power and AGC electrically controlled attenuator, described AGC electrically controlled attenuator connects described second level amplifier, described second level amplifier connects described ATT attenuator, described ATT attenuator connects described equalizer, described equalizer connects described third level amplifier, described third level amplifier connects described optical branching device, described optical branching device connects described output interface and RF test point.The pre-amplifier part of described first order amplifier, second level amplifier, third level amplifier is paster GaAs device.Described high-responsivity opto-electronic conversion detector input optical power is between-7dBm ~+2dBm, and described output interface level remains unchanged.The luminous power size of described optical receiver shows one by one by described luminous power instruction.So the utility model has the following advantages:
1, utilize operational amplifier element circuit to input optical signal test and by result feedback, thus input optical power output level when-7dBm ~+2dBm remained unchanged.
2, on luminous power indicator light, accurately can indicate corresponding received optical power value by operational amplifier unit to the reception of input optical power and control, user be debugged convenient and practical.
3, GaAs Amplifier and PD module are amplified and are exported, and gain is high, and noise is low, and distortion is little.
4, operational amplifier element circuit and diode light AGC adjustable attenuator all adopt operational amplifier and diode component to complete, and economic performance is good, utility function is strong.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model it comprise high-responsivity opto-electronic conversion detector, first order amplifier, second level amplifier, third level amplifier, AGC electrically controlled attenuator, ATT attenuator, equalizer, optical branching device, output interface, RF test point, operational amplifier, luminous power indicates, described high-responsivity opto-electronic conversion detector connects described operational amplifier and first order amplifier, described operational amplifier connects the instruction of described luminous power and AGC electrically controlled attenuator, described AGC electrically controlled attenuator connects described second level amplifier, described second level amplifier connects described ATT attenuator, described ATT attenuator connects described equalizer, described equalizer connects described third level amplifier, described third level amplifier connects described optical branching device, described optical branching device connects described output interface and RF test point.
The pre-amplifier part of described first order amplifier, second level amplifier, third level amplifier is paster GaAs device.
Described high-responsivity opto-electronic conversion detector input optical power is between-7dBm ~+2dBm, and described output interface level remains unchanged.
The luminous power size of described optical receiver shows one by one by described luminous power instruction.
In described operational amplifier, element circuit and AGC electrically controlled attenuator all adopt operational amplifier and diode component to complete.
In the present embodiment, when high-responsivity opto-electronic conversion detector input optical power is between-7dBm ~+2dBm, light signal is divided into two tunnels by high-responsivity opto-electronic conversion detector, the first via is connected with AGC electrically controlled attenuator by first order amplifier AMP1, and then exports OUTPUT by being connected with main radio frequency after second level amplifier AMP2 and ATT attenuator and EQ equalizer and third level amplifier AMP3; Second tunnel optical power signals concatenation operation amplifier unit circuit, operational amplifier unit is connected to AGC electrically controlled attenuator, the luminous power indicating member of the first via; The optical power feedback voltage on the second tunnel by operational amplifier element circuit relatively after output voltage feed back to diode light AGC electrically controlled attenuator, with reach input optical power between-7dBm ~+2dBm time can keep the output that stabilizing output level is constant; On luminous power indicator light, accurately can indicate corresponding received optical power value by operational amplifier unit to the reception of input optical power and control, user be debugged convenient and practical.The utility model mainly provides a kind of input optical power when changing in certain dynamic range on the basis of low-cost technologies, output level remains unchanged, simultaneously CTB and CSO keeps substantially constant economical light-operated AGC optical receiver, solves that output level existing in prior art is unstable with input optical power change, CTB and CSO changes large technical problem.
Claims (5)
1. a light AGC type optical receiver, is characterized in that: it comprises high-responsivity opto-electronic conversion detector, first order amplifier (AMP1), second level amplifier (AMP2), third level amplifier (AMP3), AGC electrically controlled attenuator (AGC), ATT attenuator (ATT), equalizer (QE), optical branching device, output interface, RF test point, operational amplifier, luminous power indicates, described high-responsivity opto-electronic conversion detector connects described operational amplifier and first order amplifier (AMP1), described operational amplifier connects the instruction of described luminous power and AGC electrically controlled attenuator (AGC), described AGC electrically controlled attenuator (AGC) connects described second level amplifier (AMP2), described second level amplifier (AMP2) connects described ATT attenuator (ATT), described ATT attenuator (ATT) connects described equalizer (QE), described equalizer (QE) connects described third level amplifier (AMP3), described third level amplifier (AMP3) connects described optical branching device, and described optical branching device connects described output interface and RF test point.
2. smooth AGC type optical receiver according to claim 1, is characterized in that: the pre-amplifier part of described first order amplifier (AMP1), second level amplifier (AMP2), third level amplifier (AMP3) is paster GaAs device.
3. smooth AGC type optical receiver according to claim 1, is characterized in that: described high-responsivity opto-electronic conversion detector input optical power is between-7dBm ~+2dBm, and described output interface level remains unchanged.
4. smooth AGC type optical receiver according to claim 1, is characterized in that: the luminous power size of described optical receiver shows one by one by described luminous power instruction.
5. smooth AGC type optical receiver according to claim 1, is characterized in that: in described operational amplifier, element circuit and AGC electrically controlled attenuator all adopt operational amplifier and diode component to complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000154.0U CN204334589U (en) | 2015-01-01 | 2015-01-01 | Light AGC type optical receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000154.0U CN204334589U (en) | 2015-01-01 | 2015-01-01 | Light AGC type optical receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204334589U true CN204334589U (en) | 2015-05-13 |
Family
ID=53170894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520000154.0U Expired - Fee Related CN204334589U (en) | 2015-01-01 | 2015-01-01 | Light AGC type optical receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204334589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023552A (en) * | 2017-11-30 | 2018-05-11 | 电子科技大学 | A kind of radio frequency power amplifier system for microwave wireless electric energy transmitting device |
-
2015
- 2015-01-01 CN CN201520000154.0U patent/CN204334589U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023552A (en) * | 2017-11-30 | 2018-05-11 | 电子科技大学 | A kind of radio frequency power amplifier system for microwave wireless electric energy transmitting device |
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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: 20150513 Termination date: 20190101 |