CN101158797A - Tonal modification system laser radio frequency modulation generator - Google Patents
Tonal modification system laser radio frequency modulation generator Download PDFInfo
- Publication number
- CN101158797A CN101158797A CNA2007101775055A CN200710177505A CN101158797A CN 101158797 A CN101158797 A CN 101158797A CN A2007101775055 A CNA2007101775055 A CN A2007101775055A CN 200710177505 A CN200710177505 A CN 200710177505A CN 101158797 A CN101158797 A CN 101158797A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- laser
- generator
- signal
- computing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The invention relates to a variable modulation laser RF modulation generator, which comprises an RF source and a laser generator, the invention is characterized in that: the invention also comprises an RF amplifier, a controllable RF attenuator, a computer harmony system, an RF control machine, a laser power control machine and a data collection system. The RF amplifier magnifies the RF signal produced by the RF source, output result is sent to the controllable RF attenuator; the computer harmony system controls the attenuation quantity of the RF signal through the RF control machine, the result is inputted into the laser generator; the laser generator produces a single frequency laser source by the computer harmony system through the laser power control machine; the computer harmony system respectively carries out information interaction with the RF control machine and the laser power control machine; the laser generator feedbacks a DC power signal to the computer harmony system through a data signal collection system. The invention achieves multi-level RF automatic switching mechanisms and the laser power multi-level follow mechanisms, so big dynamic range modulation signal is gained.
Description
Technical field
The present invention relates to a kind of laser rf modulations generator, particularly about a kind of tonal modification system laser radio frequency modulation generator.
Background technology
In recent years, emerge rapidly based on the imaging technique of photon density ripple, the lasing light emitter by the simulating signal modulation can obtain the photon density ripple, and photon density ripple imaging theory provides strong application demand for the simulating signal modulation technique that promotes light.But, it is a great dynamic range modulating system that photon density ripple imaging theory requires total system, original optical mode intend modulation technique for the great dynamic range system show powerless, and do not have a kind of Laser Modulation equipment can satisfy such demand in the market.In order to overcome above problem, a kind of variable modulated laser radio-frequency signal generator has been proposed here.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide the intrasystem tonal modification system laser radio frequency modulation generator of a kind of solution great dynamic range.
For achieving the above object, the present invention takes following technical scheme: a kind of tonal modification system laser radio frequency modulation generator, it comprises radio frequency source and laser generator, it is characterized in that: it also comprises radio frequency amplifier, controlled radio frequency attenuator, computing machine coherent system, radio frequency control gear, laser power control mechanism and data acquisition system (DAS); Described radio frequency amplifier amplifies the radiofrequency signal that described radio frequency source produces, and will export the result and send into described controlled radio frequency attenuator; By the damping capacity of described computing machine coherent system by described radio frequency control gear control radiofrequency signal, and the result imports described laser generator; Described laser generator by described laser power control mechanism, produces the single-frequency laser source by described computing machine coherent system; Described computing machine coherent system carries out information interaction with radio frequency control gear and laser power control mechanism respectively; Described laser generator is fed back into described computing machine coherent system by the data-signal acquisition system with DC power signal.
Radiofrequency signal is coupled in the current return at described laser generator place by coupled circuit after the decay that described controlled radio frequency attenuator sends.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention is owing to comprise radio frequency source, radio frequency amplifier, controllable frequency attenuator, radio frequency control gear, computing machine coherent system, therefore can pass through multi-level radio-frequency automatic switching mechanisms, realize the self-adaptation dynamic adjustments of laser modulation radio frequency peak-to-peak value; 2, the present invention is owing to comprise front end coupling mechanism, laser generator, computing machine coherent system, laser coordination control gear, data acquisition unit, therefore can pass through laser power multi-level follow mechanisms, the optical output power of control laser generator makes DC power and variable radio-frequency power be complementary; The present invention has obtained the great dynamic range modulation signal by above two kinds of mechanism, has realized the object of the invention.
Description of drawings
Fig. 1 is a system works schematic diagram of mechanism of the present invention
Fig. 2 is a controllable attenuator theory diagram of the present invention
Fig. 3 is an IC_WK laser-driven chip theory diagram of the present invention
Fig. 4 is the automatically controlled resistance theory diagram of acp chip DS1669 of the present invention
Fig. 5 is a tuning algorithm process flow diagram of the present invention
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes radio frequency source 1, radio frequency amplifier 2, controlled radio frequency attenuator 3, laser generator 4, computing machine coherent system 5, radio frequency control gear 6, laser power control mechanism 7, laser instrument radio-frequency front-end coupled system 8 and data acquisition system (DAS) 9.Radio frequency source 1 can be selected existing radio-frequency module VS-0-100/+17 for use, the radiofrequency signal of generation, and radio frequency amplifier 2 selected module ZHL-1010, it amplifies the radiofrequency signal that radio frequency source 1 produces, and will export the result and send into controlled radio frequency attenuator 3.Controlled radio frequency attenuator 3 is by the damping capacity of computing machine coherent system 5 by the radio frequency control gear 6 control radio frequencies of a routine, the result imports laser generator 4, laser generator 4 produces the single-frequency laser source, front end coupled circuit 8 in the laser generator is modulated to this radiofrequency signal in the current return at laser generator 4 places, this moment, the forward electric current of laser generator 4 carried out the higher-order of oscillation with the radio frequency signal, this electric current is provided by laser generator chip for driving IC_WKN, and this current drives laser organ pipe is lighted.Drive current is a DC current, and DC current too greatly then can cause laser generator 4 to be operated under the high drive current, the life-span of infringement laser instrument; DC current is too little, then can cause the radiofrequency signal distortion of being modulated, and therefore, needs computing machine coherent system 5 to coordinate the size of laser drive current according to the situation of rf attenuation.Radio frequency control gear 6 is carried out the execution command of being sent here by computing machine coherent system 5; Laser power control mechanism 7 acp chips are the automatically controlled resistance of DS1669, the drive current of control laser generator, thereby the optical output power of control laser generator 4.Computing machine coherent system 5 mainly is according to current demand, send steering order to radio frequency control gear 6 and laser power control mechanism 7, by the control of computing machine coherent system 5, the input signal of the fixed frequency of radio frequency source 1 emission is converted into the variable photon density ripple of output degree of modulation.Data acquisition system (DAS) 9 enters computing machine coherent system 5 with current collection of simulant signal, computing machine coherent system 5 will calculate the degree of modulation (being the radiofrequency signal peak-to-peak value and the ratio of DC quantity) of current demand signal, sending controling instruction be will distinguish when degree of modulation step-down computer-chronograph coherent system 5 and controllable attenuator 3 and laser generator 4 given, this moment, controllable attenuator 3 reduced the rf attenuation amount to increase the peak-to-peak value of output radiofrequency signal, laser attenuator assembly 4 will increase direct current to increase optical output power simultaneously, be system's designated value thereby keep degree of modulation.
As shown in Figure 2, an input signal of controlled radio frequency attenuator 3 is the radiofrequency signal of radio frequency amplifier 2 outputs, and another input signal is the output signal of radio frequency control gear 6, and they are through controlled radio frequency attenuator 3 decay back outputs.The core devices of controlled radio frequency attenuator 3 is a G6Y-1 high frequency relay, the numerical coding input of this device receives the digital control coding from computing machine coherent system 5, different codings plugs into different rf attenuation networks into system, thereby finishes the switching to the radio frequency damping capacity.The execution command that radio frequency control gear 6 receiving computer coherent systems 5 send, finish control to the output radio-frequency power, simultaneously, the regulating command that radio frequency control gear 6 sends according to computing machine coherent system 5 (as shown in Figure 1) reduces or increases the rf attenuation amount, the system that makes can have one comparatively appropriate signal laser generator 4 is modulated.
As shown in Figure 3, laser generator 4 produces the single-frequency laser sources and finishes driving to laser generator 4 by the IC_WK acp chip, to produce constant lasing light emitter, constant lasing light emitter is as the direct current biasing that exchanges radiofrequency signal, radiofrequency signal by controlled radio frequency attenuator 3 outputs directly is loaded on the forward current of laser generator 4 by the impedance matching circuit that is made of the capacitance-resistance loop, the capacitance-resistance matching circuit is arranged in front end coupled circuit 8, its effect is to make radio frequency transmission power maximum, its parameter select and decide according to concrete application.Finished the modulation of radiofrequency signal by above process, thereby produced the single frequency photon density wave of intensity modulated laser generator 4.
As shown in Figure 4, laser controlling mechanism 7 is attached on the laser generator 4, the electric current that IC_WKN provides it to light for laser instrument, system passes through the control of the electric current realization of control IC_WKN to laser diode current, IC_WKN provides Current Control interface (can referring to IC_WKNdatasheet), laser controlling mechanism 7 realizes control to laser drive current by the connection to this interface, thereby realizes the control to optical output power.Laser controlling mechanism 7 mainly finishes the coordination and the coupling of DC power and variable radio frequency power: when radio-frequency power is big, need laser instrument that bigger DC current is provided, otherwise radiofrequency signal will be caused distortion by negative clipping; When radio-frequency power hour, work long hours under high electric current for avoiding laser generator 4, its electric current must be reduced.The variation of the DC current of driving laser generator 4 and the variation of radiofrequency signal need coordinated, and this synergistic mechanism is finished by computing machine coherent system 5.
As shown in Figure 5, after computing machine coherent system 5 powers on, obtain the driving current value of laser generator 4 by acquisition system 9, peak-to-peak value and conversion that computing machine coherent system 5 will obtain radio frequency source 1 by the duty of radio frequency source 1 are current signal, and then obtain the current-modulation degree of current system, if the current-modulation degree of system satisfies predefined degree of modulation then system changes other course of work over to; Otherwise just need the process described in the continuous circulation execution graph 1, again radio frequency peak-to-peak value and laser power are adjusted, till satisfying the degree of modulation requirement.
In the foregoing description, radio frequency source 1 can also adopt other radio-frequency module of prior art except that selecting for use VS-0-100/+17 as the radio-frequency module.The core devices of above-mentioned controlled radio frequency attenuator can also use the device of other prior art except that the high frequency relay that adopts the G6Y-1 model.Controlled radio frequency attenuator 3 through radio frequency control gear 6, according to the degree of modulation that current system feedback is returned, is selected suitable rf attenuation amount automatically under the coordination of computing machine coherent system 5.
Claims (2)
1. tonal modification system laser radio frequency modulation generator, it comprises radio frequency source and laser generator, it is characterized in that: it also comprises radio frequency amplifier, controlled radio frequency attenuator, computing machine coherent system, radio frequency control gear, laser power control mechanism and data acquisition system (DAS); Described radio frequency amplifier amplifies the radiofrequency signal that described radio frequency source produces, and will export the result and send into described controlled radio frequency attenuator; By the damping capacity of described computing machine coherent system by described radio frequency control gear control radiofrequency signal, and the result imports described laser generator; Described laser generator by described laser power control mechanism, produces the single-frequency laser source by described computing machine coherent system; Described computing machine coherent system carries out information interaction with radio frequency control gear and laser power control mechanism respectively; Described laser generator is fed back into described computing machine coherent system by the data-signal acquisition system with DC power signal.
2. a kind of according to claim 1 tonal modification system laser radio frequency modulation generator is characterized in that: radiofrequency signal is coupled in the current return at described laser generator place by coupled circuit after the decay that described controlled radio frequency attenuator sends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101775055A CN101158797A (en) | 2007-11-16 | 2007-11-16 | Tonal modification system laser radio frequency modulation generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101775055A CN101158797A (en) | 2007-11-16 | 2007-11-16 | Tonal modification system laser radio frequency modulation generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101158797A true CN101158797A (en) | 2008-04-09 |
Family
ID=39306941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101775055A Pending CN101158797A (en) | 2007-11-16 | 2007-11-16 | Tonal modification system laser radio frequency modulation generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101158797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891844A (en) * | 2016-04-24 | 2016-08-24 | 西南技术物理研究所 | Dual mode laser pulse emission control and echo signal processing system |
-
2007
- 2007-11-16 CN CNA2007101775055A patent/CN101158797A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891844A (en) * | 2016-04-24 | 2016-08-24 | 西南技术物理研究所 | Dual mode laser pulse emission control and echo signal processing system |
| CN105891844B (en) * | 2016-04-24 | 2018-02-23 | 西南技术物理研究所 | Dual-mode laser impulse ejection controls and echo signal processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102208900A (en) | Switched mode pre-amplification and AM feedback for on-coil switched mode amplifiers | |
| US20120314782A1 (en) | Powerline Control Interface in CENELEC (EU) A-D Bands Frequency and Amplitude Modulation Transmitter | |
| CN105227243A (en) | A kind of circuit, chip and optical module controlling extinction ratio | |
| CN103022895A (en) | Laser tube power control system | |
| CN106209255A (en) | Optical module and laser bias circuit Poewr control method thereof | |
| CN107332574A (en) | A kind of high-power Loran-C pulse emitter and its waveform modulated method | |
| CN102045599A (en) | Optical signal transmission method, device and system of passive optical network | |
| CN101150369B (en) | An optical transmitter circuit for restraining excited Brillouin scattering effect | |
| JPWO2021061855A5 (en) | Envelope tracking system, mobile device, and method of envelope tracking | |
| CN101158797A (en) | Tonal modification system laser radio frequency modulation generator | |
| CN112865326B (en) | Wireless charging power adjusting method, computer device and computer readable storage medium | |
| CN103001122A (en) | Power control system of double-closed-loop laser tube | |
| CN104993367B (en) | The method of wireless laser communication PPM modulator and its multiple light courcess sequent synthesis | |
| CN108847566B (en) | Time domain waveform controllable laser generation system and method | |
| CN202977971U (en) | Double-closed loop laser tube power control system | |
| JP7205734B2 (en) | High power and quality laser system and method | |
| CN205320064U (en) | A digitally controlled ware for pulse ladder modulator | |
| CN110867719A (en) | Method for controlling Q-switching circuit, circuit board, Q-switching system and eliminating parasitic oscillation | |
| CN102932064B (en) | Method for improving threshold of simulated brillouin scattering | |
| CN215741422U (en) | Operation control device of phototherapy bed | |
| JP3710476B2 (en) | Method and apparatus for driving radiation emitting apparatus | |
| CN115800995B (en) | Output wave power control method, device and equipment of gyrotron oscillator | |
| CN110062500A (en) | Power supply circuit control method, control circuit and power circuit | |
| CN108512602B (en) | Wireless laser communication equipment | |
| WO2019070916A1 (en) | Efficiency improved driver for laser diode in optical communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080409 |