CN203839694U - Er-doped fiber-based random-waveform optical pulse shaper - Google Patents
Er-doped fiber-based random-waveform optical pulse shaper Download PDFInfo
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- CN203839694U CN203839694U CN201420100635.4U CN201420100635U CN203839694U CN 203839694 U CN203839694 U CN 203839694U CN 201420100635 U CN201420100635 U CN 201420100635U CN 203839694 U CN203839694 U CN 203839694U
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Abstract
The utility model relates to an Er-doped fiber-based random-waveform optical pulse shaper. The Er-doped fiber-based random-waveform optical pulse shaper is formed in a manner that a pulse input terminal is an optical input terminal of a first fiber isolator; an optical output terminal of the first fiber isolator is connected with a first optical input terminal of a first fiber coupler; an optical output terminal of a 980nm laser is connected with an optical input terminal of a second fiber isolator; an optical output terminal of the second fiber isolator is connected with a second optical input terminal of the first fiber coupler; a first optical output terminal of the first fiber coupler is connected with a first optical input terminal of an Er-doped fiber loop; a second optical output terminal of the first fiber coupler is connected with a second optical input terminal of the Er-doped fiber loop; an adjustable fiber attenuator is disposed in the Er-doped fiber loop; a first optical output terminal of the Er-doped fiber loop is connected with a first optical input terminal of a second fiber coupler; a second optical output terminal of the Er-doped fiber loop is connected with a second optical input terminal of the second fiber coupler; and a first optical output terminal of the second fiber coupler is a pulse output terminal. The Er-doped fiber-based random-waveform optical pulse shaper is capable of overcoming the problems that current optical pulse shapers are complex in system, poor in anti-interference capability, and difficult to shape optical pulses in random waveforms.
Description
Technical field
The utility model relates to photoelectron technology field, is specifically related to a kind of random waveform shaping of light pulse device based on Er-doped fiber.
Background technology
In fields such as optical communication, laser and laser spectroscopy measurement and nonlinear opticses, conventionally need in time domain, carry out shaping to light pulse, to meet the demand of the aspects such as optical signal transmission, optical information processing and detection, as reduced the light signal of distortion by shaping pulse in optical communication system, in high power laser system, utilize the laser pulse of shaping pulse generation given shape, can greatly improve the utilance of pulsed laser energy.
Mainly utilize at present the methods such as electrooptic modulation, birefringence, Fourier transform to realize the shaping of light pulse, structure shaping of light pulse device, the ubiquitous problem of these shaping of light pulse devices is: system architecture is complicated; Except laser, often comprise a large amount of electronic devices and components, electronic circuit; System response time is slow.Therefore, the common volume of shaping of light pulse device is larger, and unstable properties is subject to electromagnetic interference, and to be difficult to the shaping of light pulse be random waveform.
Utility model content
The purpose of this utility model is to overcome current shaping of light pulse device system complex, poor anti jamming capability, be difficult to the shaping of light pulse problem that is random waveform, proposes a kind of random waveform shaping of light pulse device based on Er-doped fiber of simple in structure, stable performance.
The purpose of this utility model is achieved in that it is comprised of the first fibre optic isolater 1, the first fiber coupler 2,980nm laser 3, the second fibre optic isolater 4, Er-doped fiber ring 5, adjustable optic fibre attenuator 6, the second fiber coupler 7;
Pulse 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 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, the first light output end of the first fiber coupler 2 connects the first light input end of Er-doped fiber ring 5, the second light output end of the first fiber coupler 2 connects the second light input end of Er-doped fiber ring 5, in Er-doped fiber ring 5, settle adjustable optic fibre attenuator 6, the first light output end of Er-doped fiber ring 5 connects the first light input end of the second fiber coupler 7, the second light output end of Er-doped fiber ring 5 connects the second light input end of the second fiber coupler 7, the first light output end of the second fiber coupler 7 is pulse output end.
The utility model also has following technical characterictic:
(1) in the utility model, shaping pulse realizes in Er-doped fiber ring resonator, and Er-doped fiber ring resonator is comprised of the first fiber coupler 2, Er-doped fiber ring 5, adjustable optic fibre attenuator 6, the second fiber coupler 7.
(2) in the utility model, by the Output optical power size of tuning 980nm laser 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, thereby the time domain shape of controlling light pulse is random waveform by the shaping of light pulse.
(3) the Output optical power size of described 980nm laser 3 is tunable, and output light is continuous light.
(4) decay of described 6 pairs of light of adjustable optic fibre attenuator is unidirectional, only input optical pulse is decayed, undamped to the output light of 980nm laser 3.
(5) 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.
The beneficial effects of the utility model are: the problem that the utility model can overcome current shaping of light pulse device system complex, poor anti jamming capability, be difficult to the shaping of light pulse is random waveform.The utlity model has simple in structure, cost is low, stable performance, the advantage that can be random waveform by the shaping of light pulse.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
Embodiment: in conjunction with Fig. 1, present embodiment is described, present embodiment is comprised of the first fibre optic isolater 1, the first fiber coupler 2,980nm laser 3, the second fibre optic isolater 4, Er-doped fiber ring 5, adjustable optic fibre attenuator 6, the second fiber coupler 7;
Pulse 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 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, the first light output end of the first fiber coupler 2 connects the first light input end of Er-doped fiber ring 5, the second light output end of the first fiber coupler 2 connects the second light input end of Er-doped fiber ring 5, in Er-doped fiber ring 5, settle adjustable optic fibre attenuator 6, the first light output end of Er-doped fiber ring 5 connects the first light input end of the second fiber coupler 7, the second light output end of Er-doped fiber ring 5 connects the second light input end of the second fiber coupler 7, the 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 comprised of the first fiber coupler 2, Er-doped fiber ring 5, adjustable optic fibre attenuator 6, the second fiber coupler 7.
The Output optical power size of described 980nm laser 3 is tunable, and output light is continuous light.
The decay of described 6 pairs of light of adjustable optic fibre attenuator is unidirectional, only input optical pulse is decayed, undamped to the output light of 980nm laser 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, it is pulse input end input, through the first fiber coupler 2, enter Er-doped fiber ring 5, by 6 decay of adjustable optic fibre attenuator, the attenuation rate that regulates adjustable optic fibre attenuator 6 according to the minimum intensity of light of the optical pulse waveform that will obtain, then, light pulse occurs after 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 3 enters the first fiber coupler 2 through the second fibre optic isolater 4, then enter Er-doped fiber ring 5, pump erbium-doped optical fiber ring 5, for light pulse provides gain, by tuning 980nm laser 3, in the size of Output optical power in the same time not, 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, thereby by shaping pulse, be random waveform in time domain.
Claims (2)
1. the random waveform shaping of light pulse device based on Er-doped fiber, by the first fibre optic isolater (1), the first fiber coupler (2), 980nm laser (3), the second fibre optic isolater (4), Er-doped fiber ring (5), adjustable optic fibre attenuator (6), the second fiber coupler (7), formed, it is characterized in that:
Pulse 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 (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), the first light output end of the first fiber coupler (2) connects the first light input end of Er-doped fiber ring (5), the second light output end of the first fiber coupler (2) connects the second light input end of Er-doped fiber ring (5), in Er-doped fiber ring (5), settle adjustable optic fibre attenuator (6), the first light output end of Er-doped fiber ring (5) connects the first light input end of the second fiber coupler (7), the second light output end of Er-doped fiber ring (5) connects the second light input end of the second fiber coupler (7), the first light output end of the second fiber coupler (7) is pulse output end.
2. a kind of random waveform shaping of light pulse device based on Er-doped fiber according to claim 1, it is characterized in that: shaping pulse realizes in Er-doped fiber ring resonator, Er-doped fiber ring resonator is comprised of the first fiber coupler (2), Er-doped fiber ring (5), adjustable optic fibre attenuator (6), the second fiber coupler (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100635.4U CN203839694U (en) | 2014-03-06 | 2014-03-06 | Er-doped fiber-based random-waveform optical pulse shaper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100635.4U CN203839694U (en) | 2014-03-06 | 2014-03-06 | Er-doped fiber-based random-waveform optical pulse shaper |
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| Publication Number | Publication Date |
|---|---|
| CN203839694U true CN203839694U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420100635.4U Expired - Fee Related CN203839694U (en) | 2014-03-06 | 2014-03-06 | Er-doped fiber-based random-waveform optical pulse shaper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904533A (en) * | 2014-03-06 | 2014-07-02 | 哈尔滨工程大学 | Arbitrary waveform optical pulse shaper based on Er-doped fibers |
-
2014
- 2014-03-06 CN CN201420100635.4U patent/CN203839694U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904533A (en) * | 2014-03-06 | 2014-07-02 | 哈尔滨工程大学 | Arbitrary waveform optical pulse shaper based on Er-doped fibers |
| CN103904533B (en) * | 2014-03-06 | 2016-11-23 | 哈尔滨工程大学 | A kind of random waveform optical pulse shaper based on Er-doped fiber |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20170306 |
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| CF01 | Termination of patent right due to non-payment of annual fee |