CN203289444U - A fiber controllable time delayer - Google Patents
A fiber controllable time delayer Download PDFInfo
- Publication number
- CN203289444U CN203289444U CN2013203370177U CN201320337017U CN203289444U CN 203289444 U CN203289444 U CN 203289444U CN 2013203370177 U CN2013203370177 U CN 2013203370177U CN 201320337017 U CN201320337017 U CN 201320337017U CN 203289444 U CN203289444 U CN 203289444U
- Authority
- CN
- China
- Prior art keywords
- beam splitter
- port
- polarization controller
- fiber
- optical isolator
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses a fiber controllable time delayer comprising a pumping source, a first optical isolator, a second optical isolator, an attenuator, a scanning spectrum analyzer, a beam splitter, a first polarization controller, a second polarization controller, a non-linear fiber, and a signal source. Having passed through the first optical isolator and the attenuator successively, the pumping source is connected with a first port of the beam splitter. The scanning spectrum analyzer is connected with a third port of the beam splitter. Having passed through the second optical isolator, the second polarization controller, the non-linear fiber, and the first polarization controller successively, the signal source is connected with a second port of the beam splitter. In the fiber controllable time delayer based on stimulated Brillouin scattering, a stimulated Brillouin scattering process in the fiber may result that light energy is transferred from a pump light field to a signal light field. When the frequency difference of the two light fields satisfies a certain condition, signal light energy may generate exponential growth.
Description
Technical field
The utility model belongs to the optical information technical field, is specifically related to a kind of fiber delay line of stimulated Brillouin effect.
Background technology
Light exchange/optical routing is the crucial optical node technology in all-optical network, and it is mainly used in realizing switching and the routing of light signal between any fiber port at optical node place, and the mission critical of wherein completing is exactly wavelength conversion.In the implementation procedure of this technology, its essence is that light wavelength is operated, and therefore, light exchange/optical routing also is referred to as wavelength exchange/wavelength route.Many advantages in all-optical network such as superiority bandwidth, transparent transmission, lower interface cost etc. are all realized by this technology.The more important thing is, due to the light exchange/optical routing optical frequency territory characteristic of inhibit signal well, thereby broken through the electric network restriction of rate limit all the time.Yet, in lacking the light switching technology of optics caching process, when the mass data bag is routed simultaneously, will cause packet a certain proportion of wrong route or loss to occur, thereby make the response time of router increase, the error rate of information rises.Therefore, the urgent hope of industry can realize by the propagation velocity of controlling light pulse the buffer memory of signal.
Summary of the invention
Realize the buffer memory of signal for the propagation velocity by controlling light pulse, the utility model provides a kind of device of optical fiber Controled delay based on stimulated Brillouin scattering (SBS).
The utility model is taked following technical scheme: the optical fiber Controled delay device of stimulated Brillouin scattering (SBS), comprise pumping source (1), the first optical isolator (2-1) and the second optical isolator (2-2), attenuator (3), scanning optical spectrum analyzer (4), beam splitter (5), the first Polarization Controller (6-1) and the second Polarization Controller (6-2), nonlinear optical fiber (7), signal source (8), pumping source (1), by after the first isolator (2-1), attenuator (3), is connected with first port (b1) of beam splitter (5) successively; Scanning optical spectrum analyzer (4) is connected with the 3rd port (b3) of beam splitter (5); Signal source (8), by after the second optical isolator (2-2), the second Polarization Controller (6-2), nonlinear optical fiber (7), the first Polarization Controller (6-1), is connected with second port (b2) of beam splitter (5) successively.Finally can observe the flashlight of delay on scanning optical spectrum analyzer (4).
Preferably, the pumping wave wave-length coverage that produces of pumping source (1) is 600nm-650nm.
Preferably, the signal wave wave-length coverage that produces of signal source (8) is 1530nm-1570nm.
The utility model can cause light energy to transfer to the signal light field from the pumping light field based on the optical fiber Controled delay device of stimulated Brillouin scattering by the Stimulated Brillouin Scattering Process in optical fiber, when the difference on the frequency of two light fields meets certain condition, will make the flashlight energy be exponential increase.Flashlight in amplification process, can be accompanied by strong dispersion in gain spectral, makes the group index generation acute variation of fiber medium, thereby produces slower rays.And, can control the size of the slower rays delay volume that obtains by the size of regulating pumping light power.
Description of drawings
Fig. 1 is the structural representation of the utility model optical fiber Controled delay device.
Fig. 2 is the time delay wave of flashlight under slower rays and fast light state.
Fig. 3 is the evolution schematic diagram of flashlight on time and space.
Fig. 4 is the delay volume that the flashlight under different pump powers obtains.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is elaborated.
As shown in Figure 1, the present embodiment comprises pumping source 1, the first optical isolator 2-1 and the second optical isolator 2-2, attenuator 3, scanning optical spectrum analyzer 4, beam splitter 5, the first Polarization Controller 6-1 and the second Polarization Controller 6-2, nonlinear optical fiber 7, signal source 8 based on the optical fiber Controled delay device of stimulated Brillouin scattering, the pumping wave wave-length coverage that pumping source 1 produces is 600nm-650nm, and the signal wave wave-length coverage that signal source 8 produces is 1530nm-1570nm.
The power output of adjustable pumping source 1, can control the size of the slower rays delay volume that obtains by the size of regulating pumping light power.In order to reduce as much as possible loss, the tie point of each device directly is welded together.
The utility model is based on the optical fiber Controled delay production process of stimulated Brillouin scattering:
1, the flashlight frequency that postpones as required, the condition of selecting suitable pumping wave to occur to meet stimulated Brillouin scattering.
2,, according to needed flashlight delay volume, select suitable pumping source signal power.
In Fig. 2, pumping light power is respectively the flashlight waveform in 64mW and 196mW situation, the delay volume that obtains be respectively 36ns and-54ns.
Above preferred embodiment of the present utility model and principle are had been described in detail; for those of ordinary skill in the art; thought according to the utility model provides, will change on embodiment, and these changes also should be considered as protection range of the present utility model.
Claims (3)
1. optical fiber Controled delay device, it is characterized in that comprising pumping source (1), the first optical isolator (2-1), the second optical isolator (2-2), attenuator (3), scanning optical spectrum analyzer (4), beam splitter (5), the first Polarization Controller (6-1), the second Polarization Controller (6-2), nonlinear optical fiber (7), signal source (8), pumping source (1), by after the first optical isolator (2-1), attenuator (3), is connected with first port (b1) of beam splitter (5) successively; Scanning optical spectrum analyzer (4) is connected with the 3rd port (b3) of beam splitter (5); Signal source (8), by after the second optical isolator (2-2), the second Polarization Controller (6-2), nonlinear optical fiber (7), the first Polarization Controller (6-1), is connected with second port (b2) of beam splitter (5) successively.
2. optical fiber Controled delay device as claimed in claim 1, it is characterized in that: the pumping wave wave-length coverage that described pumping source (1) produces is 600nm-650nm.
3. optical fiber Controled delay device as claimed in claim 1, it is characterized in that: the signal wave wave-length coverage that described signal source (8) produces is 1530nm-1570nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203370177U CN203289444U (en) | 2013-06-09 | 2013-06-09 | A fiber controllable time delayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203370177U CN203289444U (en) | 2013-06-09 | 2013-06-09 | A fiber controllable time delayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289444U true CN203289444U (en) | 2013-11-13 |
Family
ID=49545785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203370177U Expired - Fee Related CN203289444U (en) | 2013-06-09 | 2013-06-09 | A fiber controllable time delayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338075A (en) * | 2013-06-09 | 2013-10-02 | 杭州电子科技大学 | Optical fiber controllable delayer based on stimulated brillouin scattering |
-
2013
- 2013-06-09 CN CN2013203370177U patent/CN203289444U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338075A (en) * | 2013-06-09 | 2013-10-02 | 杭州电子科技大学 | Optical fiber controllable delayer based on stimulated brillouin scattering |
| CN103338075B (en) * | 2013-06-09 | 2015-10-07 | 杭州电子科技大学 | Based on the optical fiber controllable delayer of stimulated Brillouin scattering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202513435U (en) | High-energy high-repetition-frequency full-optical-fiber laser with master oscillator power amplifier (MOPA) structure | |
| CN103022873B (en) | Ultrashort pulse generator based on double pump parametric process | |
| CN102646916A (en) | Coherent combination of high-power fiber laser full optical fiber structure and high brightness beam controlling method | |
| CN106299978B (en) | System occurs for the Terahertz based on unidirectional carrier transport photodetector | |
| CN103595483A (en) | Multiband modulation light source based on ultraviolet LED | |
| CN104332810A (en) | Pulse-width-adjustable pulsed optical fiber laser device based on broadband seed resource | |
| CN203289444U (en) | A fiber controllable time delayer | |
| CN104113307B (en) | A kind of All-optical clock frequency doubling device and frequency-doubling method based on this device | |
| CN102841480A (en) | All-optical wavelength converter based on photonic crystal optical fiber four-wave frequency mixing effect | |
| CN103338075B (en) | Based on the optical fiber controllable delayer of stimulated Brillouin scattering | |
| Khaki et al. | Transient correction using EDFA: in-line optical fiber with feedback | |
| CN105874735A (en) | Adaptive compensation control method, module and optical switching system | |
| CN201740945U (en) | Liquid crystal wavelength-selective optical switch capable of improving performance by using temperature control circuit | |
| CN103178951A (en) | Chaotic signal generator based on tunable microring resonator | |
| JP2007201540A (en) | Optical signal transmitter | |
| CN110890918B (en) | High-power underwater wireless laser communication system and method based on nonlinear crystal | |
| Qian et al. | Seamless all-optical bidirectional wavelength converter | |
| CN101141222B (en) | Device and method for implementing photosignal waveform generation | |
| CN101308990A (en) | Method for generating laser pulse with adjustable pulse width | |
| CN103969913A (en) | Erbium-doped optical fiber coupler cross phase modulation all-optical logic device | |
| CN206340819U (en) | System occurs for the Terahertz based on unidirectional carrier transport photodetector | |
| CN105914572A (en) | High altitude sodium layer wind temperature detection laser radar emission laser system | |
| CN202977959U (en) | Dual-pumping parameter process-based ultrashort pulse generator | |
| CN105207049A (en) | Laser spectrum power synthesis system and method | |
| CN103956645A (en) | Fast-light-tunable device based on stimulated Brillouin scattering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131113 Termination date: 20160609 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |