CN106785832B - Pulse optical fiber - Google Patents
Pulse optical fiber Download PDFInfo
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- CN106785832B CN106785832B CN201611062026.4A CN201611062026A CN106785832B CN 106785832 B CN106785832 B CN 106785832B CN 201611062026 A CN201611062026 A CN 201611062026A CN 106785832 B CN106785832 B CN 106785832B
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- pulse
- control signal
- optical fiber
- laser
- pulsewidth
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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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10084—Frequency control by seeding
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The present invention relates to a kind of pulse optical fibers, including optical module, further includes: control signal input, for receiving pulse control signal；Pulsewidth extracts circuit, for extracting the pulse width information of pulse control signal；Pulse signal processing circuit, for triggering the pulse with target pulsewidth according to pulse width information in the failing edge for monitoring pulse control signal；Seed source laser, for generating seed source light pulse signal according to pulse；And pump laser, for generating the pumping light pulse signal with target power according to the pulse amplitude of pulse control signal；Optical module is used to generate target laser under the action of seed source light pulse signal and pumping light pulse signal.The course of work of above-mentioned pulse optical fiber only needs to input a pulse control signal, and each control signal is transmitted without using more lines, so as to greatly simplify the structure of pulse optical fiber, advantageously reduces its volume, realizes miniaturization.
Description
Technical field
The present invention relates to field of laser device technology, more particularly to a kind of pulse optical fiber.
Background technique
The control process of traditional pulse optical fiber needs to carry out transmission of control signals using 12 lines.12 lines include
8, power signal line, 1, frequency signal line, 1, pulse width signal line and MO (master oscillator) switching signal 1.This arteries and veins
Wash that the line number that fibre laser is needed in transmission of control signals is too many off, and the switching switch module for control is also more, from
And lead to that structure is complicated volume is larger, it is unfavorable for miniaturization.
Summary of the invention
Based on this, it is necessary to provide that a kind of structure is simple and the pulse optical fiber of small volume.
A kind of pulse optical fiber, including optical module, further includes: control signal input, for receiving pulse control
Signal；Pulsewidth extracts circuit, connect with the control signal input；The pulsewidth extracts circuit for extracting the pulse control
The pulse width information of signal processed；Pulse signal processing circuit extracts circuit with the control signal input, the pulsewidth respectively and connects
It connects；The pulse signal processing circuit is used for when monitoring the failing edge of the pulse control signal, is believed according to the pulsewidth
One pulse with target pulsewidth of breath triggering；Seed source laser is connect with the pulse signal processing circuit, is used for basis
The pulse generates seed source light pulse signal；And pump laser, it is connect with the control signal input, is used for basis
The pulse amplitude of the pulse control signal generates the pumping light pulse signal with target power；The optical module respectively with institute
Seed source laser, pump laser connection are stated, in the seed source light pulse signal and the pumping light pulse
Target laser is generated under the action of signal.
The course of work of above-mentioned pulse optical fiber only needs to input a pulse control signal, without using more
Root line transmits each control signal, so as to greatly simplify the structure of pulse optical fiber, advantageously reduces its volume, real
Now minimize.
The pulse signal processing circuit includes fpga chip in one of the embodiments,.
The pump laser includes constant-current drive circuit in one of the embodiments,；The constant-current drive circuit is used
In generating corresponding driving current according to the pulse amplitude of the pulse control signal to drive the pump laser.
The seed source laser is power in 10 milliwatts~20 milliwatts laser in one of the embodiments,.
It in one of the embodiments, further include memory；The memory is for storing the pulse control signal
The mapping table of pulse amplitude and target power；The pump laser is used to utilize the correspondence according to the pulse amplitude
Relation table obtains target power.
The memory is also used to store the pulsewidth and target arteries and veins of the pulse control signal in one of the embodiments,
Wide mapping table；The pulse signal processing circuit is used to utilize the correspondence according to the pulsewidth of the pulse control signal
Relation table obtains the target pulsewidth.
The optical module includes fiber optic power amplifier in one of the embodiments,.
The fiber optic power amplifier is using rare earth-doped fiber as gain media in one of the embodiments,.
It in one of the embodiments, further include controller；The controller is stagnant for controlling the seed source laser
It is opened afterwards in the pump laser.
It in one of the embodiments, further include control signal generating circuit；The control signal generating circuit with it is described
Control signal input connection, for generating the pulse control signal.
Detailed description of the invention
Fig. 1 is the structural block diagram of the pulse optical fiber in an embodiment；
Fig. 2 is the timing diagram of each pulse signal generated in the pulse optical fiber course of work in an embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, which includes control signal input 110, pulsewidth extracts circuit 120, pulse is believed
Number processing circuit 130, seed source laser 140, pump laser 150 and optical module 160.Wherein, pulsewidth extract circuit 120,
Pulse signal processing circuit 130 and pump laser 150 are connect with control signal input 110 respectively.Pulse signal processing
Circuit 130 also extracts circuit 120 with pulsewidth and connect.Seed source laser 140 and pulse signal processing circuit 130.
Control signal input 110 is for receiving pulse control signal.Pulse control signal can be one, similar PWM
The control signal of (Pulse Width Modulation, pulse width modulation).Pulse control signal is input from the outside, and can be with
The pulse width of pulse control signal (being referred to as pulsewidth below), pulse amplitude and frequency are adjusted according to actual needs
It is whole, to control the work of entire pulse optical fiber.
Pulsewidth extracts the pulse control signal that circuit 120 is used to receive the input of control signal input 110, and extracts its arteries and veins
Wide information.
Pulse signal processing circuit 130 is for receiving the pulse control signal that control signal input 110 receives.Pulse
Signal processing circuit 130 is monitored the pulse control signal, only when the failing edge for monitoring pulse control signal arrives,
The pulse width information that circuit 120 extracts is extracted according to pulsewidth and triggers the pulse with target pulsewidth, to seed source laser
140 are triggered.Pulse signal processing circuit 130 can (Field-Programmable Gate Array shows by FPGA
Field programmable gate array) chip realization.Target vessles length has certain corresponding relationship, the mapping table with the pulsewidth extracted
It can be stored by memory.In one embodiment, above-mentioned pulse optical fiber further includes memory, right to store this
Answer relation table.In other examples, the pulse optical fiber can also the portion of directing out obtain the mapping table.By
A pulse only is generated in the falling edge triggering of pulse control signal in pulse signal processing circuit 130, so as to realize
The Pulse by Pulse of pulse optical fiber controls, and then accurately controls the number of light pulse.And in traditional laser, light pulse needs
It will be by the co-determination of multiple signals such as frequency signal and the signal that opens the light, if the two is asynchronous or the signal that opens the light does not go to count
It is the number for being unable to control light pulse if the period for calculating frequency.Pulse optical fiber in the present embodiment can be fine
Solve the problems, such as this.
Seed source laser 140 is also referred to as principal oscillation device (Master Oscillator, MO).140 He of seed source laser
The optical fiber laser that pump laser 150 is constituted is known as MOPA structure pulse optical fiber.Seed source laser 140 is used for
The seed source light pulse signal with target pulsewidth is generated under the control for the pulse that pulse signal processing circuit 130 exports.That is,
In the present embodiment, it is extracted by the pulsewidth of the pulse control signal to input, the correlation of target pulsewidth can be extracted
Information, without the pulse width information of target laser is transmitted by individual control line (such as SPI protocols of 3 wire types) again, into
And it can simplify structure and reduce cost.Simultaneously as the SPI protocol transmitting and decoding of 3 wire types require the time, so opening the light
It can not modify to pulsewidth, and can be come by the modification of the pulsewidth to pulse control signal in the present embodiment on the way
Realization is opened the light modifies pulsewidth on the way.
Seed source laser 140 uses a low-power laser.The power of the laser between 10mW~20mW,
Select wavelength in 1064nm or so.Low-power laser is easy to directly modulate output parameter by driving current, as frequency,
Pulsewidth, impulse waveform and watt level etc., and seed source light pulse signal is connected serially in optical module 160 by tail optical fiber.Light
Module 160 includes fiber optic power amplifier (Power Amplifier, PA) 162, to put to the seed source light pulse signal
Big processing.
Pump laser 150 is used to generate the pump with target power according to the pulse amplitude of the pulse control signal of input
Pu light pulse signal.Specifically, target power and the amplitude extracted have certain corresponding relationship, which can be with
It is stored, can also be obtained by the pulse optical fiber portion of directing out by memory.In the present embodiment, pumping laser
Device 150 includes constant-current drive circuit.Constant-current drive circuit is used to generate corresponding driving electricity according to the amplitude of pulse control signal
Stream is to drive pump laser, so that pump laser 150 generates the pumping light pulse signal with target power.?
That is, in the present embodiment, using the amplitude of pulse control signal as analog quantity, to control the electric current of pump laser, thus nothing
It needs special analog-digital chip that pulse control signal is converted to analog signal, namely eliminates a digital-to-analogue conversion core
Piece, so as to save cost and reduce entire pulse optical fiber structure complexity.
The seed source light pulse signal and pump laser 150 that optical module 160 is issued in seed source laser 140 issue
Pumping light pulse signal collective effect under productive target laser.The pulse width and seed source laser 140 of target laser
Seed source light pulse signal pulsewidth it is identical, and its frequency is identical as the frequency of seed source light pulse signal.Target laser
Power determined by the target power of the pumping light pulse signal of pump laser 150.In the present embodiment, optical module 160
Fiber optic power amplifier using rare earth-doped fiber as gain media.The pump light as caused by pump laser 140
Pulse signal forms high power density in fiber core and doping with rare-earth ions energy level is made to form " population inversion ", finally exists
Good fortune is excited because of the generation of seed source light pulse signal in fiber medium to penetrate, and forms target laser.
The timing diagram of each pulse signal generated in the pulse optical fiber course of work is as shown in Figure 2.In Fig. 2, pulse
The pulsewidth for controlling each pulse in the pulsewidth and pulse optical fiber of signal has certain proportionate relationship.Because laser
Pulsewidth is all nanosecond, and pulse control signal (namely external control signal) needs to transmit power signal, and pulsewidth is micro-
It is more than second grade.From figure 2 it can be seen that the amplitude of pulse control signal is adjustable, and amplitude size is equally wanted and pump laser
150 driving current sets certain proportionate relationship.To ensure accurately to trigger the pulse signal of laser, pulse control signal is needed
Want the failing edge of clear non-jitter.
From Fig. 2 as can be seen that when the pulse optical fiber works, outside only needs to provide a pulse control signal
The power of pulse optical fiber, frequency are controlled, open the light and closes light, transmits each control letter without using more lines
Number, so as to greatly simplify the structure of pulse optical fiber, its volume is advantageously reduced, realizes miniaturization.And it can be with
The width of each pulse, and height are controlled, each pulse is accurate to, to realize to the accurate of pulse optical fiber
Control.
In one embodiment, above-mentioned pulse optical fiber further includes that control signal is raw on the basis of previous embodiment
At circuit and controller.
Control signal generating circuit is connect with control signal input.Signal generating circuit is controlled for according to actual needs
The laser of generation generates the pulse control signal with certain amplitude, pulsewidth and frequency.
Controller is then used to control the work of pump laser 150 and seed source laser 140.Specifically, it controls
Device processed lags behind the unlatching of pump laser 150 for controlling seed source laser 140, does not have to avoid the occurrence of first pulse signal
The problem of having output and being influenced by the pre- size for rushing energy.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of pulse optical fiber, including optical module, which is characterized in that further include:
Control signal input, for receiving pulse control signal；
Pulsewidth extracts circuit, connect with the control signal input；The pulsewidth extracts circuit for extracting the pulse control
The pulse width information of signal processed；
Pulse signal processing circuit extracts circuit connection with the control signal input, the pulsewidth respectively；The pulse letter
Number processing circuit is used for when monitoring the failing edge of the pulse control signal, and triggering one according to the pulse width information has
The pulse of target pulsewidth；
Seed source laser is connect with the pulse signal processing circuit, for generating seed source light pulse according to the pulse
Signal；And
Pump laser is connect with the control signal input, for raw according to the pulse amplitude of the pulse control signal
At the pumping light pulse signal with target power；
The optical module is connect with the seed source laser, the pump laser respectively, in the seed source light arteries and veins
It rushes under the action of signal and the pumping light pulse signal and generates target laser.
2. pulse optical fiber according to claim 1, which is characterized in that the pulse signal processing circuit includes
Fpga chip.
3. pulse optical fiber according to claim 1, which is characterized in that the pump laser includes constant current driving
Circuit；The constant-current drive circuit is used to generate corresponding driving current according to the pulse amplitude of the pulse control signal to drive
Move the pump laser.
4. pulse optical fiber according to claim 1, which is characterized in that the seed source laser is power 10
Milliwatt~20 milliwatts laser.
5. pulse optical fiber according to claim 1, which is characterized in that further include memory；The memory is used
In the mapping table for the pulse amplitude and target power for storing the pulse control signal；The pump laser is used for basis
The pulse amplitude obtains target power using the mapping table.
6. pulse optical fiber according to claim 5, which is characterized in that the memory is also used to store the arteries and veins
The pulsewidth of punching control signal and the mapping table of target pulsewidth；The pulse signal processing circuit is used for according to the pulse control
The pulsewidth of signal processed obtains the target pulsewidth using the mapping table.
7. pulse optical fiber according to claim 1, which is characterized in that the optical module includes optical fiber power amplification
Device.
8. pulse optical fiber according to claim 7, which is characterized in that the fiber optic power amplifier is dilute using mixing
Earth elements optical fiber is as gain media.
9. pulse optical fiber according to claim 1, which is characterized in that further include controller；The controller is used
The pump laser unlatching is lagged behind in controlling the seed source laser.
10. pulse optical fiber according to claim 1, which is characterized in that further include control signal generating circuit；Institute
It states control signal generating circuit to connect with the control signal input, for generating the pulse control signal.
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| CN201611062026.4A CN106785832B (en) | 2016-11-25 | 2016-11-25 | Pulse optical fiber |
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| CN201611062026.4A CN106785832B (en) | 2016-11-25 | 2016-11-25 | Pulse optical fiber |
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| CN106785832B true CN106785832B (en) | 2019-04-23 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508136B (en) * | 2017-08-21 | 2019-07-02 | 深圳市杰普特光电股份有限公司 | A kind of control method and device of MOPA laser |
| CN107370014A (en) * | 2017-08-23 | 2017-11-21 | 深圳市杰普特光电股份有限公司 | A kind of laser control circuit and laser |
| CN107508122B (en) * | 2017-09-05 | 2019-08-27 | 深圳市杰普特光电股份有限公司 | A kind of control method and device of MOPA laser |
| CN109167241B (en) * | 2018-09-18 | 2019-12-06 | 深圳市杰普特光电股份有限公司 | control circuit of laser |
| CN109244821B (en) * | 2018-11-08 | 2020-12-29 | 深圳市杰普特光电股份有限公司 | Laser and laser generation method |
| CN113809624A (en) * | 2020-06-15 | 2021-12-17 | 苏州创鑫激光科技有限公司 | Pump source drive control device and method and fiber laser |
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| US7804864B2 (en) * | 2004-03-31 | 2010-09-28 | Imra America, Inc. | High power short pulse fiber laser |
| JP4525710B2 (en) * | 2007-06-29 | 2010-08-18 | セイコーエプソン株式会社 | Power transmission control device, power transmission device, electronic device, and non-contact power transmission system |
| CN101272123B (en) * | 2008-04-29 | 2010-12-01 | 江南大学 | Space vector width pulse modulation method based on FPGA |
| JP5120321B2 (en) * | 2009-04-09 | 2013-01-16 | ソニー株式会社 | LASER DRIVE DEVICE, LASER DRIVE METHOD, OPTICAL UNIT, OPTICAL DEVICE |
| CN102244355A (en) * | 2011-06-13 | 2011-11-16 | 武汉安扬激光技术有限责任公司 | Pulse-width-tunable gain-switch type picosecond pulse seed source |
| WO2013120248A1 (en) * | 2012-02-14 | 2013-08-22 | 深圳市杰普特电子技术有限公司 | Pulse laser and marking system using same |
| CN103022862A (en) * | 2012-12-03 | 2013-04-03 | 广东汉唐量子光电科技有限公司 | Random waveform nanosecond pulse high-fidelity amplifying device |
| CN103368054A (en) * | 2013-07-26 | 2013-10-23 | 上海朗研光电科技有限公司 | Fast feedback control method and system for locked-mode self-starting of optical fiber laser |
| CN105953930B (en) * | 2016-05-11 | 2019-03-01 | 深圳市杰普特光电股份有限公司 | Picosecond narrow spaces test device |
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