CN107342525A - It is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system - Google Patents
It is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system Download PDFInfo
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- CN107342525A CN107342525A CN201710513620.9A CN201710513620A CN107342525A CN 107342525 A CN107342525 A CN 107342525A CN 201710513620 A CN201710513620 A CN 201710513620A CN 107342525 A CN107342525 A CN 107342525A
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- distributed feedback
- laser
- feedback laser
- drive circuit
- ceramic condenser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S1/00—Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range
- H01S1/02—Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range solid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
- H01S5/0625—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in multi-section lasers
- H01S5/06255—Controlling the frequency of the radiation
- H01S5/06258—Controlling the frequency of the radiation with DFB-structure
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention discloses it is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system, including microwave source, first and second Distributed Feedback Laser, first and second Distributed Feedback Laser drive circuit；Polarization Controller, the second Distributed Feedback Laser drive circuit output up-conversion signal are connected between first Distributed Feedback Laser and the second Distributed Feedback Laser；Two Distributed Feedback Laser drive circuits include laser diode current drive circuit and laser bias circuit, laser bias circuit includes ceramic condenser, high frequency choke coil and sub-miniature A connector, the capacitance of ceramic condenser is the μ F of 100nF~1, two Distributed Feedback Laser drive circuits are essentially identical, and simply the capacitance of the ceramic condenser in the second Distributed Feedback Laser drive circuit is 8pF.The present invention is directly detected and exported by Distributed Feedback Laser drive circuit by interactional characteristic between Distributed Feedback Laser electric current and luminous power, up-conversion signal, has very high stability.
Description
Technical field
The present invention relates to it is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system.
Background technology
With developing rapidly for microwave technology, microwave multiple-frequency system has been widely used in frequency synthesis, measurement, military
In the various electronic system tests such as system, communication, radar, especially in the oscillator of small-power high stable, frequency synthesizer, lock phase
Also it is widely used in the technologies such as oscillator, frequency doubling system serves most important in the evolution of some technologies
Effect, and have very high requirement to indices, especially in terms of frequency and stability, so research frequency doubling system
It is significant.
Because frequency multiplier huge scientific research value and the market demand, have substantial amounts of enterprise and mechanism just to put into very early both at home and abroad
Research and development to it, the past its mainly using non-linear varistor, step pipe, snowslide pipe frequency multiplier, due to component sheet
The limitation of body parameter, has that frequency multiplication multiple is low and stability is poor, and power output is low, the complicated deficiency of circuit, refinement is wanted to some
Close occasion causes very big influence.For the injection locking of laser, current existing system all contains circulator and light
Electric explorer, not only system complex but also integrated micro device influence very big on beat signal.
The content of the invention
For above-mentioned prior art, the invention provides it is a kind of based on two Distributed Feedback Lasers injection lockings without in local oscillator
Frequency conversion system, not only frequency multiplication number is big, and what is more important passes through interactional spy between Distributed Feedback Laser electric current and luminous power
Property, up-conversion signal are directly detected and exported by Distributed Feedback Laser drive circuit, have very high stability.The present invention solves
Existing frequency doubling system frequency multiplication number is low, and stability is poor, and the complicated deficiency of circuit, system architecture of the invention is simply easily realized, can
The signal generator of multiple signals is produced while using as a kind of stabilization.
In order to solve the above-mentioned technical problem, it is proposed by the present invention it is a kind of based on the injection locking of two Distributed Feedback Lasers without this
Shake up-converter system, including microwave source and the first Distributed Feedback Laser, the microwave source and the first Distributed Feedback Laser with the first DFB
Laser driving circuit is connected；First Distributed Feedback Laser is connected with Polarization Controller, the second Distributed Feedback Laser and second in turn
Distributed Feedback Laser drive circuit, the second Distributed Feedback Laser drive circuit export up-conversion signal；The first DFB lasers
Drive circuit includes laser diode current drive circuit and first laser device biasing circuit, and the first laser device biasing circuit includes
First ceramic condenser, the first high frequency choke coil and the first sub-miniature A connector, first ceramic condenser and the first high frequency choke coil connect
First Distributed Feedback Laser is connected to, first sub-miniature A connector is connected with the microwave source；The electric capacity of first ceramic condenser
It is worth for the μ F of 100nF~1, the second Distributed Feedback Laser drive circuit includes laser diode current drive circuit and second laser is inclined
Circuits, the second laser biasing circuit include the second ceramic condenser, the second high frequency choke coil and the second sub-miniature A connector, institute
State the second ceramic condenser and the second high frequency choke coil is connected to second Distributed Feedback Laser, second sub-miniature A connector is output
Interface；The capacitance of second ceramic condenser is 8pF.
The capacitance of first ceramic condenser is preferably 100nF.
Compared with prior art, the beneficial effects of the invention are as follows：
Because the Distributed Feedback Laser modulation and up-conversion signal output without local oscillator up-converter system are to pass through various lasers
Drive circuit is completed, and by adjusting the electric current of drive circuit parameter frequency multiplication number can be driven to be changed, and reduce
The use of external modulator so that the structure of system is simplified.It is with what other locked acquisition frequency-doubled signal by injecting
System is compared, and the present invention avoids having used photodetector and circulator etc., passes through the beat frequency after two Distributed Feedback Laser injection lockings
Signal directly affects the distribution of the carrier from laser, according to interactional spy between Distributed Feedback Laser luminous power and electric current
Property, so that the electric current of laser changes and changed with beat signal, therefore by the sub-miniature A connector of second laser drive circuit through one
Individual ceramic condenser directly detects curent change after filtering out direct current signal, reduces influence of the integrated micro device to signal, and
System architecture is simple, and obtained up-conversion signal noise is low and stability is high.
Brief description of the drawings
Fig. 1 be the present invention based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system installation drawing.
Fig. 2 is first laser device biasing circuit schematic diagram in the present invention；
Fig. 3 is second laser biasing circuit schematic diagram in the present invention；
In figure：
1- microwave sources, the Distributed Feedback Lasers of 2- first, the Distributed Feedback Lasers of 3- second, the DBF laser driving circuit of 4- the first, 5-
2nd DBF laser driving circuit, 6- Polarization Controllers.
Embodiment
Technical solution of the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, described is specific
Only the present invention is explained for embodiment, is not intended to limit the invention.
In the present invention, the electric current by adjusting the first Distributed Feedback Laser drive circuit 4 drives parameter to the first Distributed Feedback Laser
Driven is carried out, the tune by the biasing circuit of the first Distributed Feedback Laser drive circuit to the first Distributed Feedback Laser low-rate signal
System, the Output optical power of the first Distributed Feedback Laser is influenceed by the change of electric current, passes through polarization using the wide range optical signal after modulation
Controller injection is locked to the second Distributed Feedback Laser so that the second Distributed Feedback Laser PGC demodulation to the first Distributed Feedback Laser output light
The high-order sideband of signal carries out beat frequency, and the electric current in the second Distributed Feedback Laser changes and changed with beat signal so that the 2nd DFB
The SMA interfaces of laser driving circuit detect and export up-conversion signal.
As shown in figure 1, it is proposed by the present invention it is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-conversion system
System, including the Distributed Feedback Laser 2 of microwave source 1 and first, the Distributed Feedback Laser 2 of microwave source 1 and first drive with the first Distributed Feedback Laser
Dynamic circuit 4 is connected；First Distributed Feedback Laser 2 is connected with Polarization Controller 6, the second Distributed Feedback Laser 3 and the 2nd DFB in turn
Laser driving circuit 5, the second Distributed Feedback Laser drive circuit 5 export microwave signal；The first Distributed Feedback Laser driving
Circuit 4 includes laser diode current drive circuit and first laser device biasing circuit, as shown in Fig. 2 the first laser device biases
Circuit includes the first ceramic condenser C1, the first high frequency choke coil L1 and the first sub-miniature A connector U1, the first ceramic condenser C1 and the
One high frequency choke coil L1 is connected to first Distributed Feedback Laser 2, and the first SMA joints U1 is connected with the microwave source 1；
The capacitance of the first ceramic condenser C1 is 100nF~1 μ F, preferably 100nF.The second Distributed Feedback Laser drive circuit
5 include laser diode current drive circuit and second laser biasing circuit, as shown in figure 3, the second laser biasing circuit
It is high including the second ceramic condenser C2, the second high frequency choke coil L2 and the second sub-miniature A connector U2, the second ceramic condenser C2 and second
Frequency choke coil L2 is connected to second Distributed Feedback Laser 3, and the second sub-miniature A connector U2 is output interface；Second pottery
Porcelain electric capacity C2 capacitance is 8pF.
Using implementation method without local oscillator up-converter system of the present invention based on two Distributed Feedback Laser injection lockings, including
Following steps：
Step 1: the power output P and I of the microwave source 1 are adjusted according to formula (1)DCChange first Distributed Feedback Laser 2
Modulation degree and centre wavelength.
In formula (1), P is the microwave source (1) power output, and R is the impedance 50 of the first Distributed Feedback Laser drive circuit 4
Ω；RLDFor laser internal resistance 25 Ω, IbiasThe modulation electric current of first Distributed Feedback Laser 2 is modulated to for the microwave source 1, by
Power P determines；IDCFor the driving current of first Distributed Feedback Laser 2.
Step 2: first Distributed Feedback Laser 2 exports wide range optical signal, it is injected into by the Polarization Controller 6 described
Second Distributed Feedback Laser 3.
Step 3: driven by the electric current for adjusting the second Distributed Feedback Laser drive circuit 5 second described in parameter change
The centre wavelength of DFB lasers 3, the wavelength of second Distributed Feedback Laser 3 is in the first DFB by changing wavelength and swash
In a certain high order frequency spectrum lockable frequency range of the output spectrum of light device 2, so that carrying out beat frequency after two-laser injection locking.
Step 4: two lasers after injection locking produce a beat frequency, the bat in second Distributed Feedback Laser 3
The distribution of carrier in second Distributed Feedback Laser 3 described in frequency effect of signals, according to mutual between Distributed Feedback Laser luminous power and electric current
The characteristic of influence, so that the electric current of second Distributed Feedback Laser 3 changes and changed with beat signal.
Step 5: the curent change of second Distributed Feedback Laser 3 passes through in the second Distributed Feedback Laser drive circuit 5
One 8pF electric capacity filters out direct current signal so as to obtain up-conversion signal.
Although above in conjunction with accompanying drawing, invention has been described, and the invention is not limited in above-mentioned specific implementation
Mode, above-mentioned embodiment is only schematical, rather than restricted, and one of ordinary skill in the art is at this
Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to the present invention's
Within protection.
Claims (2)
1. it is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system, including microwave source (1) and the first DFB
Laser (2), the microwave source (1) and the first Distributed Feedback Laser (2) are connected with the first Distributed Feedback Laser drive circuit (4)；Its
It is characterised by：
First Distributed Feedback Laser (2) is connected with Polarization Controller (6), the second Distributed Feedback Laser (3) and the 2nd DFB laser in turn
Device drive circuit (5), the second Distributed Feedback Laser drive circuit (5) export up-conversion signal；
The first Distributed Feedback Laser drive circuit (4) includes laser diode current drive circuit and first laser device biasing circuit, institute
Stating first laser device biasing circuit includes the first ceramic condenser, the first high frequency choke coil and the first sub-miniature A connector, first ceramics
Electric capacity and the first high frequency choke coil are connected to first Distributed Feedback Laser (2), first sub-miniature A connector and the microwave source
(1) it is connected；The capacitance of first ceramic condenser is the μ F of 100nF~1,
The second Distributed Feedback Laser drive circuit (5) includes laser diode current drive circuit and second laser biasing circuit, institute
Stating second laser biasing circuit includes the second ceramic condenser, the second high frequency choke coil and the second sub-miniature A connector, second ceramics
Electric capacity and the second high frequency choke coil are connected to second Distributed Feedback Laser (3), and second sub-miniature A connector is output interface；Institute
The capacitance for stating the second ceramic condenser is 8pF.
2. existed according to claim 1 based on what two Distributed Feedback Laser injections locked without local oscillator up-converter system, its feature
In：The capacitance of first ceramic condenser is 100nF.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513620.9A CN107342525B (en) | 2017-06-28 | 2017-06-28 | It is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513620.9A CN107342525B (en) | 2017-06-28 | 2017-06-28 | It is a kind of based on the injection locking of two Distributed Feedback Lasers without local oscillator up-converter system |
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| CN107342525A true CN107342525A (en) | 2017-11-10 |
| CN107342525B CN107342525B (en) | 2019-06-21 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050100345A1 (en) * | 2001-10-09 | 2005-05-12 | Infinera Corporation | Monolithic transmitter/receiver photonic integrated circuit (Tx/RxPIC) transceiver chip |
| JP2007049042A (en) * | 2005-08-11 | 2007-02-22 | Osaka Univ | Optical electromagnetic wave transformation method and ferromagnetic material polarization status detection method |
| CN102778799A (en) * | 2011-11-23 | 2012-11-14 | 深圳大学 | Tunable optical frequency converter based on amplitude modulator |
| CN102832529A (en) * | 2012-08-29 | 2012-12-19 | 武汉光迅科技股份有限公司 | Dual-frequency-laser-based photoproduction tunable microwave source and frequency stabilization control method |
-
2017
- 2017-06-28 CN CN201710513620.9A patent/CN107342525B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050100345A1 (en) * | 2001-10-09 | 2005-05-12 | Infinera Corporation | Monolithic transmitter/receiver photonic integrated circuit (Tx/RxPIC) transceiver chip |
| JP2007049042A (en) * | 2005-08-11 | 2007-02-22 | Osaka Univ | Optical electromagnetic wave transformation method and ferromagnetic material polarization status detection method |
| CN102778799A (en) * | 2011-11-23 | 2012-11-14 | 深圳大学 | Tunable optical frequency converter based on amplitude modulator |
| CN102832529A (en) * | 2012-08-29 | 2012-12-19 | 武汉光迅科技股份有限公司 | Dual-frequency-laser-based photoproduction tunable microwave source and frequency stabilization control method |
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| CN107342525B (en) | 2019-06-21 |
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