CN108055084B - Optical network signal enhancement transmitting circuit - Google Patents
Optical network signal enhancement transmitting circuit Download PDFInfo
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- CN108055084B CN108055084B CN201711457450.3A CN201711457450A CN108055084B CN 108055084 B CN108055084 B CN 108055084B CN 201711457450 A CN201711457450 A CN 201711457450A CN 108055084 B CN108055084 B CN 108055084B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 95
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 230000003321 amplification Effects 0.000 claims abstract description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000002238 attenuated effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
- H04B10/541—Digital intensity or amplitude modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/564—Power control
Abstract
The invention discloses an optical network signal enhancement transmitting circuit, which detects an optical power signal of an optical transmitter E1, inputs the optical power signal into an amplitude modulation circuit after being compared and amplified with an optical power reference signal, the amplitude modulation circuit receives and couples an electric power signal and a signal input by the optical power signal feedback compensation circuit, then utilizes a composite circuit formed by a triode Q1, a Q2, an adjustable resistor RW1 and a triode Q3 to carry out amplitude modulation, finally, an amplification coupling output circuit utilizes an operational amplifier AR1 to amplify, and simultaneously, a signal output by an operational amplifier AR1 and a reference potential output by an operational amplifier AR2 are input into an adder AR3 to be coupled and output, so that the optical power signal emitted by a transmitter E1 is ensured to be stable, the problem that the signal is attenuated in the long-distance transmission process of an optical network signal is solved, the resistance value of an adjustable resistor RW1 is adjusted, and the triode Q1, The on-state voltages of the Q2 and the Q3 can be used for adjusting different types of optical power signals, and the method has great development value and practical value.
Description
Technical Field
The invention relates to the technical field of optical network signals, in particular to an optical network signal enhancement transmitting circuit.
Background
An active optical network belongs to a point-to-multipoint optical communication system and comprises an ONU (optical network unit), an optical remote terminal OLT (optical line terminal) and an optical fiber transmission line, wherein the optical network signal is often weakened in the long-distance transmission process, and the phenomenon mainly comprises that the signal transmitted by an optical network signal transmitting circuit is unstable, contains clutter and even contains abnormal signals, so that the signal is weakened in the long-distance transmission process.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the present invention aims to provide an optical network signal enhancement transmitting circuit, which has the characteristics of ingenious conception and humanized design, and effectively solves the problem that signals transmitted by the optical network signal transmitting circuit are unstable, contain clutter, and even contain abnormal signals, which causes signal attenuation in the long-distance transmission process.
The optical network signal enhancement transmitting circuit comprises an optical power signal feedback compensation circuit, an amplitude modulation circuit and an amplification coupling output circuit, wherein the optical power signal feedback compensation circuit detects an optical power signal of an optical transmitter E1, compares the optical power signal with an optical power reference signal, amplifies the optical power signal, and inputs the optical power signal into the amplitude modulation circuit, the amplitude modulation circuit receives and couples an electric power signal and a signal input by the optical power signal feedback compensation circuit, then amplitude modulation is carried out by using an amplitude modulation circuit consisting of a triode Q1, a Q2, an adjustable resistor RW1 and a triode Q3, finally the amplification coupling output circuit amplifies the signal by using an operational amplifier AR1, and simultaneously the signal amplified and output by the operational amplifier AR1 and a reference potential output by the operational amplifier AR2 are input into an adder AR3 for coupling output;
the amplitude modulation circuit comprises a triode Q1, the base electrode of a triode Q1 is respectively connected with an electric power signal transmitted by a resistor R12, an output signal of the optical power signal feedback compensation circuit, one end of a resistor R1 and one end of a resistor R2, the other end of a resistor R1 is connected with a power supply +10V, the other end of a resistor R2 is connected with the ground, the collector electrode of a triode Q1 is connected with the power supply +10V, the emitter electrode of a triode Q1 is connected with the base electrode of a triode Q2, the collector electrode of a triode Q2 is respectively connected with the lower end of an adjustable resistor RW1 and the base electrode of a triode Q3, the adjustable end of an adjustable resistor RW1, the upper end of an adjustable resistor RW1 and one end of a ground capacitor C1 are all connected with the power supply +10V, the emitter electrode of a triode Q3 is connected with the.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1, the optical power signal feedback compensation circuit adopts an optical power meter to detect the size of an optical power signal emitted by an emitter, the optical power signal enters an inverting input end of an operational amplifier AR4 after amplitude limiting and filtering, subtraction proportion operation is carried out on the optical power signal and an optical power reference signal at a non-inverting input end, amplified differential voltage is output, the amplified differential voltage is coupled to a base electrode of a triode Q1 as a compensation signal after being smoothly filtered by an inductor L3 and is coupled with an electric power signal which is input simultaneously, then amplitude modulation is carried out by an amplitude modulation circuit consisting of the triodes Q1, Q2, an adjustable resistor RW1 and a triode Q3, finally the amplified by an amplifying coupling output circuit by an operational amplifier AR1, signals amplified and output by the operational amplifier AR1 and a reference potential output by the operational amplifier AR2 are input into an adder AR3 for coupling output, the stability of the optical power signal emitted by the emitter E1 is, the problem of signal attenuation can occur, and the method has great development value and practical value.
2, the amplitude modulation circuit receives and couples the electric power signal and the signal input by the optical power signal feedback compensation circuit, the coupled signal is the control electrode potential of the triode Q1, when the signal contains abnormal signals, the coupled signal is a low level signal, the triodes Q1 and Q2 are not conducted, but the triode Q3 is conducted, the coupled signal is converted into a power supply +10V, the power supply +10V is divided by an adjustable resistor RW1 and flows into the non-inverting input end of the operational amplifier AR2 through a capacitor C2, the operational amplifier AR2 amplifies the signal, the signal is filtered by an LC circuit formed by connecting an inductor L1, a capacitor C3 and a capacitor C4 in parallel and then is input into the non-inverting input end of the adder AR3 in the amplification coupling output circuit, the potential output by the operational amplifier AR1 is zero, therefore, the signal after the AR3 coupling, namely, the signal after the operational amplifier AR2 amplifies and filters the filtered signal through the emitter E1, and achieves the effect, the conducting voltages of the triodes Q1, Q2 and Q3 can be adjusted by adjusting the resistance value of the adjustable resistor RW1, so that different types of optical power signals can be adjusted.
Drawings
Fig. 1 is a block diagram of an optical network signal enhancement transmitting circuit according to the present invention.
Fig. 2 is a schematic diagram of an optical network signal enhancement transmitting circuit of the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
In one embodiment, the optical network signal enhancement transmitting circuit comprises an optical power signal feedback compensation circuit, an amplitude modulation circuit and an amplification coupling output circuit, wherein the optical power signal feedback compensation circuit detects an optical power signal of an optical transmitter E1, and inputs the amplified signal into an amplitude modulation circuit after comparing with the optical power reference signal, the amplitude modulation circuit receives and couples the electric power signal (which is the power signal after electric modulation, how the electric signal is modulated, which is the prior art and is not detailed herein) and the signal input by the optical power signal feedback compensation circuit, then amplitude modulation is carried out by using an amplitude modulation circuit consisting of a triode Q1, a triode Q2, an adjustable resistor RW1 and a triode Q3, finally the amplitude is amplified by an amplifying coupling output circuit by using an operational amplifier AR1, meanwhile, the signal amplified and output by the operational amplifier AR1 and the reference potential output by the operational amplifier AR2 are input into the adder AR3 for coupling output, that is, are emitted by the emitter E1;
the amplitude modulation circuit receives and couples the electric power signal and the signal input by the optical power signal feedback compensation circuit, the coupled signal is the control electrode potential of the triode Q1, when the signal contains abnormal signal, the coupled signal is low level signal, the transistors Q1 and Q2 are not conducted, but the triode Q3 is turned on, at this time, the coupled signal is converted into a power supply +10V, the power supply +10V is divided by the adjustable resistor RW1 and flows into the non-inverting input terminal of the operational amplifier AR2 through the capacitor C2, the operational amplifier AR2 amplifies the signal, the signal is filtered by the inductor L1 and the LC circuit formed by the capacitors C3 and C4 in parallel and then is input into the non-inverting input terminal of the adder AR3 in the amplification coupling output circuit, at this time, the potential output by the operational amplifier AR1 is zero, therefore, the signal coupled by the adder AR3, that is, the signal amplified and filtered by the operational amplifier AR2, is transmitted by the transmitter E1, and the effect of amplitude modulation and filtering of abnormal signals is achieved; when the signal is a normal signal, the coupled signal is a high-level signal, at this time, the triodes Q1, Q2 and Q3 are turned on, the resistors R1 and R2 are bias resistors of the triode Q1, the coupled signal is input into the non-inverting input terminal of the operational amplifier AR1, the operational amplifier AR1 amplifies the signal, the signal is filtered by an LC circuit formed by connecting an inductor L2 and capacitors C5 and C6 in parallel and then input into the non-inverting input terminal of the adder AR3 in the amplification coupling output circuit, meanwhile, the power supply +10V is divided by an adjustable resistor RW1 and then flows into the non-inverting input terminal of the operational amplifier AR2 through a capacitor C2, the operational amplifier AR2 amplifies the signal, the signal is filtered by an LC circuit formed by connecting an inductor L1 and capacitors C3 and C4 in parallel and then input into the adder AR 9 non-inverting input terminal in the amplification coupling output circuit, the adder AR 6862 couples the signal and then directly inputs the signal into the transmitter E1 for transmission, wherein the signal can be adjusted by adjusting, The turn-on voltages of Q2 and Q3 can be used for adjusting different types of optical power signals;
the base electrode of the triode Q1 is respectively connected with an electric power signal transmitted by the resistor R12, an output signal of the optical power signal feedback compensation circuit, one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R1 is connected with a power supply +10V, the other end of the resistor R2 is connected with the ground, the collector electrode of the triode Q1 is connected with the power supply +10V, the emitter electrode of the triode Q1 is connected with the base electrode of the triode Q2, the collector electrode of the triode Q2 is respectively connected with the lower end of the adjustable resistor RW1 and the base electrode of the triode Q3, the adjustable end of the adjustable resistor RW1, the upper end of the adjustable resistor RW1 and one end of the grounded capacitor C1 are both connected with the power supply +10V, the emitter electrode of the triode Q3 is connected with the ground through; the non-inverting input end of an operational amplifier AR1 is connected with the emitter of the triode Q2, the inverting input end of the operational amplifier AR1 is connected with one end of a capacitor C9, the other end of a capacitor C9 is connected with the inverting input end of an operational amplifier AR2, the non-inverting input end of the operational amplifier AR2 is connected with one end of a capacitor C2, the other end of the capacitor C2 is connected with +10V, the output end of an operational amplifier AR2 is respectively connected with one end of a grounding capacitor C3 and one end of an inductor L1, the other end of an inductor L1 is respectively connected with one end of a grounding capacitor C4 and one end of a resistor R4, the output end of an operational amplifier AR1 is respectively connected with one end of a grounding capacitor C5 and one end of an inductor L2, the other end of the inductor L2 is respectively connected with one end of a grounding capacitor C2 and one end of a resistor R2, the other end of the resistor R2 is respectively connected with the other end of the non-inverting input end of, the output terminal of the operational amplifier AR3 is connected to the optical transmitter E1, and the inverting input terminal of the operational amplifier AR3 is connected to ground through a resistor R7.
In the second embodiment, on the basis of the first embodiment, the optical power signal feedback compensation circuit detects the magnitude of the optical power signal emitted by the emitter by using an optical power meter, after amplitude limiting filtering, the optical power signal enters the inverting input terminal of the operational amplifier AR4, performs subtraction proportional operation with the optical power reference signal (the signal magnitude when the optical power signal emitted by the emitter is normal) at the non-inverting input terminal, outputs an amplified difference voltage, is smoothly filtered by the inductor L3, and then is coupled to the base of the triode Q1 as a compensation signal, and includes an optical power detection signal port H1, an optical power reference signal port H2, and a bidirectional amplitude limiting circuit composed of a diode D1 and a diode D2 connected in parallel in an inverting manner and connected to the optical power signal port H1 and performs amplitude limiting, so as to prevent the large signal from impacting and damaging the subsequent circuit, on the other hand, the performance of transmitting a signal to a post-stage circuit is not affected when a small signal is received, the small signal is filtered by an RC filter circuit consisting of a capacitor C7 and a resistor R8 and then enters an inverting input end of an operational amplifier AR4, a normal optical power signal transmitted by a transmitter is filtered by the RC filter circuit consisting of a capacitor C8 and a resistor R9 which are connected through an optical power reference signal port H2, and is pulled down by a resistor R10 and then is sent to a non-inverting input end of the operational amplifier AR4, the signals at the inverting input end and the non-inverting input end of the operational amplifier AR4 are subjected to inverse proportional subtraction operation, the resistor R11 is a feedback resistor and is used for adjusting the inverse proportional amplification factor, an output signal at the output end of the operational amplifier AR4 is smoothly filtered by an inductor L.
When the invention is used, an optical power meter is adopted to detect the size of an optical power signal emitted by an emitter, the optical power signal enters the inverting input end of an operational amplifier AR4 after amplitude limiting and filtering, the optical power signal and an optical power reference signal at the non-inverting input end are subjected to subtraction proportion operation, amplified difference voltage is output, the amplified difference voltage is smoothly filtered by an inductor L3 and then is used as a compensation signal to be connected to the base electrode of a triode Q1 and coupled with an electric power signal which is input simultaneously, the coupled signal is the control electrode potential of a triode Q1, when the signal contains an abnormal signal, the coupled signal is a low-level signal, the triodes Q1 and Q2 are not conducted, but a triode Q3 is conducted, the coupled signal is converted into a power supply +10V, the voltage is divided by an adjustable resistor RW1 and then flows into the non-inverting input end of an operational amplifier AR2 through a capacitor C2, the operational amplifier AR2 amplifies the signal, the signal is filtered by an LC circuit formed by connecting an inductor L1, at this time, the potential output by the operational amplifier AR1 is zero, so that the signal coupled by the adder AR3 is the signal amplified and filtered by the operational amplifier AR2, and is transmitted by the transmitter E1, thereby achieving the effect of amplitude-modulating and filtering the abnormal signal; when the signal is a normal signal, the coupled signal is a high-level signal, at this time, the transistors Q1, Q2 and Q3 are turned on, the resistors R1 and R2 are bias resistors of the transistor Q1, the coupled signal is input into the non-inverting input terminal of the operational amplifier AR1, the operational amplifier AR1 amplifies the signal, the signal is filtered by an LC circuit formed by connecting an inductor L2 and capacitors C5 and C6 in parallel and then input into the non-inverting input terminal of the adder AR3 in the amplification coupling output circuit, meanwhile, the power +10V is divided by an adjustable resistor RW1 and then flows into the non-inverting input terminal of the operational amplifier AR2 through the capacitor C2, the operational amplifier AR2 amplifies the signal, the signal is filtered by an LC circuit formed by connecting an inductor L1 and capacitors C3 and C4 in parallel and then input into the non-inverting input terminal of the adder AR3 in the amplification coupling output circuit, the adder AR3 couples the signal and then directly inputs the signal into the transmitter E1 to ensure that the transmitter E1 transmits the optical power signal, the problem of signal attenuation occurs, in which the conducting voltages of the transistors Q1, Q2 and Q3 can be adjusted by adjusting the resistance of the adjustable resistor RW1, so that different types of optical power signals can be adjusted.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (3)
1. The optical network signal enhancement transmitting circuit comprises an optical power signal feedback compensation circuit, an amplitude modulation circuit and an amplification coupling output circuit, and is characterized in that the optical power signal feedback compensation circuit detects an optical power signal of an optical transmitter E1, compares the optical power signal with an optical power reference signal, amplifies the optical power signal, and inputs the optical power signal into the amplitude modulation circuit, the amplitude modulation circuit receives and couples an electric power signal and a signal input by the optical power signal feedback compensation circuit, then utilizes the amplitude modulation circuit composed of a triode Q1, a Q2, an adjustable resistor RW1 and a triode Q3 to modulate amplitude, and finally the amplification coupling output circuit utilizes an operational amplifier AR1 to amplify, and simultaneously inputs a signal amplified and output by the operational amplifier AR1 and a reference potential output by the operational amplifier AR2 into an adder AR3 for coupling output;
the amplitude modulation circuit comprises a triode Q1, the base electrode of a triode Q1 is respectively connected with an electric power signal transmitted by a resistor R12, an output signal of the optical power signal feedback compensation circuit, one end of a resistor R1 and one end of a resistor R2, the other end of a resistor R1 is connected with a power supply +10V, the other end of a resistor R2 is connected with the ground, the collector electrode of a triode Q1 is connected with the power supply +10V, the emitter electrode of a triode Q1 is connected with the base electrode of a triode Q2, the collector electrode of a triode Q2 is respectively connected with the lower end of an adjustable resistor RW1 and the base electrode of a triode Q3, the adjustable end of an adjustable resistor RW1, the upper end of an adjustable resistor RW1 and one end of a ground capacitor C1 are all connected with the power supply +10V, the emitter electrode of a triode Q3 is connected with the.
2. The optical network signal enhancement transmitting circuit of claim 1, wherein the optical power signal feedback compensation circuit comprises an optical power detection signal port H1 and an optical power reference signal port H2, the optical power signal output from the optical power detection signal port H1 is connected to the anode of a diode D1 and the cathode of a diode D2, the anode of a diode D2 is connected to the cathode of a diode D1, the one end of a grounded capacitor C7 and the one end of a resistor R8, the other end of a resistor R8 is connected to the one end of a resistor R11 and the inverting input of an operational amplifier AR4, the reference optical power signal output from the optical power reference signal port H2 is connected to the one end of a grounded capacitor C8 and the one end of a resistor R9, the other end of the resistor R9 is connected to the one end of a grounded resistor R10 and the non-inverting input of an operational amplifier AR4, the output of the operational amplifier AR4 is connected to the other end of a resistor R11 and the other end, One end of the inductor L3 and the other end of the inductor L3 are output signals of the optical power signal feedback compensation circuit.
3. The optical network signal enhancement transmitting circuit according to claim 1, wherein the amplifying coupling output circuit comprises operational amplifiers AR1 and AR2, a non-inverting input terminal of the operational amplifier AR1 is connected to an emitter of the transistor Q2, an inverting input terminal of the operational amplifier AR1 is connected to one terminal of a capacitor C9, the other terminal of the capacitor C9 is connected to an inverting input terminal of the operational amplifier AR2, a non-inverting input terminal of the operational amplifier AR2 is connected to one terminal of a capacitor C2, the other terminal of the capacitor C2 is connected to +10V, an output terminal of the operational amplifier AR2 is connected to one terminal of a grounded capacitor C3 and one terminal of an inductor L1, the other terminal of the inductor L1 is connected to one terminal of a grounded capacitor C4 and one terminal of a resistor R4, an output terminal of the operational amplifier AR1 is connected to one terminal of a grounded capacitor C5 and one terminal of an inductor L2, and the other terminal of the inductor L2, One end of the resistor R5, the other end of the resistor R4 are connected to the other end of the resistor R5, the non-inverting input terminal of the operational amplifier AR3, and one end of the resistor R6, respectively, the other end of the resistor R6 is connected to the output terminal of the operational amplifier AR3, the output terminal of the operational amplifier AR3 is connected to the optical transmitter E1, and the inverting input terminal of the operational amplifier AR3 is connected to the ground through the resistor R7.
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| CN201711457450.3A CN108055084B (en) | 2017-12-28 | 2017-12-28 | Optical network signal enhancement transmitting circuit |
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| CN201711457450.3A CN108055084B (en) | 2017-12-28 | 2017-12-28 | Optical network signal enhancement transmitting circuit |
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| CN108566224B (en) * | 2018-04-26 | 2020-02-14 | 郑州工程技术学院 | Internet of things system based on wireless network |
| CN108572579B (en) * | 2018-07-26 | 2023-10-13 | 黄河科技学院 | Agricultural greenhouse data processing analysis system based on Internet of things |
| CN108988820B (en) * | 2018-09-30 | 2023-09-01 | 北京易用时代科技有限公司 | Network information analysis system |
| CN109257053B (en) * | 2018-11-19 | 2023-06-23 | 国网江苏省电力有限公司仪征市供电分公司 | Network signal enhancing device |
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