CN103904533B - A kind of random waveform optical pulse shaper based on Er-doped fiber - Google Patents
A kind of random waveform optical pulse shaper based on Er-doped fiber Download PDFInfo
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- CN103904533B CN103904533B CN201410080744.9A CN201410080744A CN103904533B CN 103904533 B CN103904533 B CN 103904533B CN 201410080744 A CN201410080744 A CN 201410080744A CN 103904533 B CN103904533 B CN 103904533B
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Abstract
The present invention relates to photoelectron technical field, be specifically related to a kind of random waveform optical pulse shaper based on Er-doped fiber.It is made up of first fibre optic isolater the 1, first fiber coupler 2,980nm laser instrument the 3, second fibre optic isolater 4, Er-doped fiber ring 5, adjustable optic fibre attenuator the 6, second fiber coupler 7.The present invention can overcome current optical pulse shaper system complex, poor anti jamming capability, be difficult to the shaping of light pulse be the problem of random waveform.The present invention has simple in construction, low cost, stable performance, can be the advantage of random waveform by the shaping of light pulse.
Description
Technical field
The present invention relates to photoelectron technical field, be specifically related to a kind of random waveform optical pulse shaper based on Er-doped fiber.
Background technology
Generally light pulse need to be carried out shaping in time domain in fields such as the measurement of optical communication, laser and laser spectrum and nonlinear opticses, to meet the demand of the aspects such as optical signal transmission, optical information processing and detection, as optical communication system is passed through the optical signal of shaping pulse reduction distortion, in high power laser system, utilize shaping pulse to produce the laser pulse of given shape, be greatly improved the utilization rate of pulsed laser energy.
Currently mainly utilizing the methods such as Electro-optical Modulation, birefringence, Fourier transform to realize the shaping of light pulse, construct optical pulse shaper, these optical pulse shaper common problems are: system architecture is complicated；In addition to laser instrument, usually contain a large amount of electronic devices and components, electronic circuit；System response time is slow.Therefore, the usual volume of optical pulse shaper is relatively big, and unstable properties easily by electromagnetic interference, and is difficult to the shaping of light pulse be random waveform.
Summary of the invention
It is an object of the invention to overcome current optical pulse shaper system complex, poor anti jamming capability, be difficult to the shaping of light pulse be the problem of random waveform, propose the random waveform optical pulse shaper based on Er-doped fiber of a kind of simple in construction, stable performance.
The object of the present invention is achieved like this: it is made up of first fibre optic isolater the 1, first fiber coupler 2,980nm laser instrument the 3, second fibre optic isolater 4, Er-doped fiber ring 5, adjustable optic fibre attenuator the 6, second fiber coupler 7；
nullPulse input end is the light input end of the first fibre optic isolater 1，The light output end of the first fibre optic isolater 1 connects the first light input end of the first fiber coupler 2，The light output end of 980nm laser instrument 3 connects the light input end of the second fibre optic isolater 4，The light output end of the second fibre optic isolater 4 connects the second light input end of the first fiber coupler 2，First light output end of the first fiber coupler 2 connects the first light input end of Er-doped fiber ring 5，Second light output end of the first fiber coupler 2 connects the second light input end of Er-doped fiber ring 5，Er-doped fiber ring 5 disposes adjustable optic fibre attenuator 6，First light output end of Er-doped fiber ring 5 connects the first light input end of the second fiber coupler 7，Second light output end of Er-doped fiber ring 5 connects the second light input end of the second fiber coupler 7，First light output end of the second fiber coupler 7 is pulse output end.
The present invention also has techniques below feature:
(1) in the present invention, shaping pulse realizes in Er-doped fiber ring resonator, and Er-doped fiber ring resonator is made up of the first fiber coupler 2, Er-doped fiber ring 5, adjustable optic fibre attenuator the 6, second fiber coupler 7.
(2) in the present invention, by tuning the Output optical power size of 980nm laser instrument 3, the attenuation rate of adjustable optic fibre attenuator 6, control light pulse after Er-doped fiber ring resonator resonance, transmitance at pulse output end, thus control the time-domain shape of light pulse, it is random waveform by the shaping of light pulse.
(3) the Output optical power size of the 980nm laser instrument 3 described in is tunable, and output light is continuous light.
(4) the adjustable optic fibre attenuator 6 described in is unidirectional to the decay of light, only decays input optical pulse, undamped to the output light of 980nm laser instrument 3.
(5) coupling ratio of the first fiber coupler 2 described in is 1:99, and the coupling ratio of the second fiber coupler 7 is 1:99.
The beneficial effects of the present invention is: the present invention can overcome current optical pulse shaper system complex, poor anti jamming capability, be difficult to the shaping of light pulse be the problem of random waveform.The present invention has simple in construction, low cost, stable performance, can be the advantage of random waveform by the shaping of light pulse.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described further:
Detailed description of the invention: combine Fig. 1 and present embodiment is described, present embodiment is made up of first fibre optic isolater the 1, first fiber coupler 2,980nm laser instrument the 3, second fibre optic isolater 4, Er-doped fiber ring 5, adjustable optic fibre attenuator the 6, second fiber coupler 7；
nullPulse input end is the light input end of the first fibre optic isolater 1，The light output end of the first fibre optic isolater 1 connects the first light input end of the first fiber coupler 2，The light output end of 980nm laser instrument 3 connects the light input end of the second fibre optic isolater 4，The light output end of the second fibre optic isolater 4 connects the second light input end of the first fiber coupler 2，First light output end of the first fiber coupler 2 connects the first light input end of Er-doped fiber ring 5，Second light output end of the first fiber coupler 2 connects the second light input end of Er-doped fiber ring 5，Er-doped fiber ring 5 disposes adjustable optic fibre attenuator 6，First light output end of Er-doped fiber ring 5 connects the first light input end of the second fiber coupler 7，Second light output end of Er-doped fiber ring 5 connects the second light input end of the second fiber coupler 7，First light output end of the second fiber coupler 7 is pulse output end.
Shaping pulse realizes in Er-doped fiber ring resonator, and Er-doped fiber ring resonator is made up of the first fiber coupler 2, Er-doped fiber ring 5, adjustable optic fibre attenuator the 6, second fiber coupler 7.
The Output optical power size of described 980nm laser instrument 3 is tunable, and output light is continuous light.
Described adjustable optic fibre attenuator 6 is unidirectional to the decay of light, only decays input optical pulse, undamped to the output light of 980nm laser instrument 3.
The coupling ratio of the first described fiber coupler 2 is 1:99, and the coupling ratio of the second fiber coupler 7 is 1:99.
Operation principle:
Input optical pulse is by the light input end of the first fibre optic isolater 1, i.e. pulse input end input, Er-doped fiber ring 5 is entered through the first fiber coupler 2, decayed by adjustable optic fibre attenuator 6, minimum intensity of light according to optical pulse waveform to be obtained regulates the attenuation rate of adjustable optic fibre attenuator 6, then, after light pulse occurs resonance in Er-doped fiber ring 5, by the first light output end of the second fiber coupler 7, i.e. pulse output end output；The output light of 980nm laser instrument 3 enters the first fiber coupler 2 through the second fibre optic isolater 4, subsequently into Er-doped fiber ring 5, pump erbium-doped optical fiber ring 5, gain is provided for light pulse, by tuning 980nm laser instrument 3 in the size of Output optical power the most in the same time, control the gain size of Er-doped fiber ring 5, and then control light pulse after Er-doped fiber ring resonator resonance, in the transmitance of pulse output end, thus it is random waveform in time domain by shaping pulse.
Claims (6)
1. a random waveform optical pulse shaper based on Er-doped fiber, by the first fibre optic isolater (1), the first optical fiber coupling
Device (2), 980nm laser instrument (3), the second fibre optic isolater (4), Er-doped fiber ring (5), adjustable optic fibre attenuator (6),
Second fiber coupler (7) forms, it is characterised in that:
Pulse input end is the light input end of the first fibre optic isolater (1), and the light output end of the first fibre optic isolater (1) connects
First light input end of the first fiber coupler (2), the light output end of 980nm laser instrument (3) connects the second fibre optic isolater
(4) light input end, the light output end of the second fibre optic isolater (4) connects the second light input of the first fiber coupler (2)
End, the first light output end of the first fiber coupler (2) connects the first light input end of Er-doped fiber ring (5), the first optical fiber
Second light output end of bonder (2) connects arrangement in the second light input end of Er-doped fiber ring (5), Er-doped fiber ring (5)
Adjustable optic fibre attenuator (6), the first light output end of Er-doped fiber ring (5) connects the first light of the second fiber coupler (7)
Input, the second light output end of Er-doped fiber ring (5) connects the second light input end of the second fiber coupler (7), and second
First light output end of fiber coupler (7) is pulse output end.
A kind of random waveform optical pulse shaper based on Er-doped fiber the most according to claim 1, it is characterised in that: arteries and veins
Rush shaping to realize in Er-doped fiber ring resonator, Er-doped fiber ring resonator by the first fiber coupler (2), mix
Erbium fiber optic loop (5), adjustable optic fibre attenuator (6), the second fiber coupler (7) form.
A kind of random waveform optical pulse shaper based on Er-doped fiber the most according to claim 1, it is characterised in that: logical
Cross the Output optical power size of tuning 980nm laser instrument (3), the attenuation rate of adjustable optic fibre attenuator (6), control light pulse
After Er-doped fiber ring resonator resonance, in the transmitance of pulse output end, thus control the time-domain shape of light pulse, by light
Shaping pulse is random waveform.
A kind of random waveform optical pulse shaper based on Er-doped fiber the most according to claim 1, it is characterised in that: institute
The Output optical power size of the 980nm laser instrument (3) stated is tunable, and output light is continuous light.
A kind of random waveform optical pulse shaper based on Er-doped fiber the most according to claim 1, it is characterised in that: institute
The adjustable optic fibre attenuator (6) stated is unidirectional to the decay of light, only decays input optical pulse, to 980nm laser
The output light of device (3) is undamped.
A kind of random waveform optical pulse shaper based on Er-doped fiber the most according to claim 1, it is characterised in that: institute
The coupling ratio of the first fiber coupler (2) stated is 1:99, and the coupling ratio of the second fiber coupler (7) is 1:99.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080744.9A CN103904533B (en) | 2014-03-06 | 2014-03-06 | A kind of random waveform optical pulse shaper based on Er-doped fiber |
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| CN201410080744.9A CN103904533B (en) | 2014-03-06 | 2014-03-06 | A kind of random waveform optical pulse shaper based on Er-doped fiber |
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| CN103904533A CN103904533A (en) | 2014-07-02 |
| CN103904533B true CN103904533B (en) | 2016-11-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5524118A (en) * | 1994-12-07 | 1996-06-04 | Electronics And Telecommunications Research Institute | Wavelength-varying multi-wavelength optical filter laser using a single pump light source |
| CN101349854A (en) * | 2008-09-05 | 2009-01-21 | 北京交通大学 | Arbitrary light-pulse generator based on optical Fourier transformation |
| CN102707437A (en) * | 2012-06-11 | 2012-10-03 | 天津理工大学 | Light pulse shaper based on double-array fiber grating and working method thereof |
| CN203839694U (en) * | 2014-03-06 | 2014-09-17 | 哈尔滨工程大学 | Er-doped fiber-based random-waveform optical pulse shaper |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002025783A2 (en) * | 2000-09-22 | 2002-03-28 | Calmar Optcom, Inc. | Actively mode-locked fiber laser with controlled chirp output |
| WO2008126703A1 (en) * | 2007-04-11 | 2008-10-23 | The Furukawa Electric Co., Ltd. | Optical pulse shaper, optical pulse light source, super continuum light generator and super continuum light generating method |
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2014
- 2014-03-06 CN CN201410080744.9A patent/CN103904533B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5524118A (en) * | 1994-12-07 | 1996-06-04 | Electronics And Telecommunications Research Institute | Wavelength-varying multi-wavelength optical filter laser using a single pump light source |
| CN101349854A (en) * | 2008-09-05 | 2009-01-21 | 北京交通大学 | Arbitrary light-pulse generator based on optical Fourier transformation |
| CN102707437A (en) * | 2012-06-11 | 2012-10-03 | 天津理工大学 | Light pulse shaper based on double-array fiber grating and working method thereof |
| CN203839694U (en) * | 2014-03-06 | 2014-09-17 | 哈尔滨工程大学 | Er-doped fiber-based random-waveform optical pulse shaper |
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