CN208862359U - A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre - Google Patents
A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre Download PDFInfo
- Publication number
- CN208862359U CN208862359U CN201820551973.8U CN201820551973U CN208862359U CN 208862359 U CN208862359 U CN 208862359U CN 201820551973 U CN201820551973 U CN 201820551973U CN 208862359 U CN208862359 U CN 208862359U
- Authority
- CN
- China
- Prior art keywords
- mode
- optical fibre
- less fundamental
- fiber
- fundamental mode
- 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.)
- Active
Links
Landscapes
- Lasers (AREA)
Abstract
The utility model discloses a kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre, with ring cavity structure, including narrow linewidth pump laser, image intensifer, the first fiber mode selection coupler, the first Polarization Controller, optical fiber circulator, the second fiber mode selection coupler, the second Polarization Controller and less fundamental mode optical fibre；Wherein the first fiber mode selects coupler for chamber external schema switching device, and the M8003 line coupling of specific high-order mode in fundamental transverse mode and less fundamental mode optical fibre in single mode optical fiber may be implemented；Second fiber mode selects coupler for intracavity modal coupled apparatus, the M8003 line coupling of high-order mode in high-order mode and less fundamental mode optical fibre in less fundamental mode optical fibre may be implemented, Brillouin's non-linear gain based on less fundamental mode optical fibre in annular chamber, realize that higher order mode amplifies in intracavitary resonance, directly output higher order mode laser.
Description
Technical field
The utility model relates to optical fiber laser, technical field of photo communication, in particular to a kind of height based on less fundamental mode optical fibre
Rank mould Brillouin optical fiber laser.
Background technique
High-order mode laser is with a wide range of applications, and draw due to its unique spatial-intensity, phase and polarisation distribution
The more and more interest of people are played.For example, information is modulated in several different high-order modes in optical communication field, that is,
Mode divides multiplexing technology, can significantly improve the transmission capacity in optic communication.In sensory field of optic fibre, high-order mode be can achieve more
High temperature and strain resolving accuracy.In addition, the vortex laser from high-order mode variation, in quantum and nanocomposite optical, optics
Manipulation, super-resolution imaging and laser material processing etc. have very big potentiality.
Under the promotion of these applications, researchers propose many methods to generate high-order mode laser.Currently, generating high
The laser of rank mould laser can be roughly divided into two types: volume elements part solid state laser and full-optical-fiber laser.Compared with the former, entirely
Optical fiber laser has many advantages, such as that at low cost, flexibility is good, stability is good, small in size, high-efficient.Realize full-optical-fiber laser
Critical component is efficient all -fiber mode conversion or selector, including dislocation coupling technique, less fundamental mode optical fibre Prague light
Grid, long-period fiber grating and model selection coupler.The cloth of the conversion of these modes or selector in full-optical-fiber laser
Office can be divided into two classes.The first kind, which is placed on the outside of resonant cavity, and grade is associated in the output of fundamental transverse mode (LP01) laser
In light path.Second class, it is intracavitary which is placed on the laser resonance comprising single mode gain media.But strictly speaking, this two
Class laser is still the amplification of fundamental transverse mode resonance, rather than desired high-order mode resonance amplifies.In addition, because of the endless of device
Kind, both layouts also result in light beam power and quality degradation, and output high-order mode mode purity is low.Therefore, it realizes a kind of high
The method of efficiency, all -fiber and low cost has weight to obtain high-purity, high stability and compact-sized high-order mode laser
The meaning wanted.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the prior arts and deficiency, provide a kind of height based on less fundamental mode optical fibre
Rank mould Brillouin optical fiber laser is realized intracavitary based on Brillouin's nonlinear effect using passive less fundamental mode optical fibre as gain media
The amplification of high-order mode resonance, directly obtains the high-order mode laser of height mode purity in laser output.In addition, the laser also has
There is the advantages of aspects such as compact-sized, adjusting is easy, cheap, stability is high.
The purpose of this utility model is realized by the following technical solution: a kind of high-order mode Brillouin based on less fundamental mode optical fibre
Optical fiber laser, comprising: narrow linewidth pump laser, image intensifer, the first fiber mode select coupler, the first Polarization Control
Device, optical fiber circulator, the second fiber mode selection coupler, the second Polarization Controller and less fundamental mode optical fibre；
Wherein, the optical fiber circulator is the three fiber ports annular equipped with first port, second port and third port
Device；The narrow linewidth pump laser is connected to image intensifer；The image intensifer is connected to the first fiber mode selection coupling
The second port of the first port of clutch, the first fiber mode selection coupler is connected to optical fiber through the first Polarization Controller
The first port of circulator；The second port of the optical fiber circulator connects the first end of the second fiber mode selection coupler
Mouthful；The second port of the second fiber mode selection coupler is connected to fiber optic loop through the second Polarization Controller and less fundamental mode optical fibre
The third port of shape device is constituted annular chamber with this；The third port of the second fiber mode selection coupler exports laser.
Preferably, the narrow linewidth pump laser, the narrow linewidth semiconductor laser for selecting C-band power adjustable humorous
Or narrow cable and wide optical fiber laser, line width are lower than 1MHz.
Preferably, the image intensifer selects high-gain erbium-doped fiber amplifier or 1550nm wave band semiconductor light to put
Big device.
Preferably, first fiber mode selects coupler, is that single mode optical fiber and less fundamental mode optical fibre fused biconical taper are made
2 × 2 coupler, the M8003 line in the fundamental transverse mode and less fundamental mode optical fibre in single mode optical fiber between specific higher order mode may be implemented
Coupling, first and the 4th port be single mode optical fiber, second and third port be less fundamental mode optical fibre.
Preferably, the optical fiber circulator, is less fundamental mode optical fibre circulator, and the tail optical fiber of three ports is less fundamental mode optical fibre.
Preferably, second fiber mode selects coupler, is that less fundamental mode optical fibre and less fundamental mode optical fibre fused biconical taper are made
2 × 2 coupler, the orientation in less fundamental mode optical fibre in specific higher order mode and less fundamental mode optical fibre between specific higher order mode may be implemented
Selection coupling, the tail optical fiber of four ports are less fundamental mode optical fibre.
Preferably, the less fundamental mode optical fibre is 1550nm wave band less fundamental mode optical fibre, and the pattern count of support is greater than 2 modes, long
Degree is greater than 20m.
The optical fiber laser of the utility model is ring cavity structure, includes an optical fiber circulator and a light in annular chamber
Fine model selection coupler, the interior connection optical fiber of entire annular chamber is less fundamental mode optical fibre.The utility model using in less fundamental mode optical fibre by
Swash Brillouin scattering, realizes that higher order mode amplifies in resonant cavity interior resonance, generate the high-order mode cloth for stablizing high-purity at room temperature
In deep laser.
The utility model compared with prior art, is had the following advantages and beneficial effects:
1, the utility model selects coupler as laser resonant cavity external schema switching device using fiber mode and swashs
Light output coupled apparatus, loss is small, high-efficient.
2, the utility model is based on Brillouin's non-linear gain, realizes the intracavitary resonance amplification of higher order mode, the high-order of acquisition
Mould zlasing mode purity is high.
3, the utility model is using passive less fundamental mode optical fibre as gain media, and it is convenient to obtain, use easy to spread.
4, the utility model uses all optical fibre structure, and structure is simple, at low cost, is easy to fibre system and integrates, exports laser
Stability is good, line width, improves the practicability and reliability of high-order mode laser.
Detailed description of the invention
Fig. 1 is the schematic diagram of high-order mode Brillouin optical fiber laser of the embodiment based on less fundamental mode optical fibre.
In figure: 1- narrow linewidth pump laser；2- image intensifer；The first fiber mode of 3- selects coupler；4- first is inclined
Shake controller；5- optical fiber circulator；The second fiber mode of 6- selects coupler；The second Polarization Controller of 7-；8- less fundamental mode optical fibre.
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
Embodiment 1
As shown in Figure 1, a kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre of this example, including narrow linewidth
Pump laser 1, image intensifer 2, the first fiber mode selection coupler 3, the first Polarization Controller 4, optical fiber circulator 5, the
Two fiber modes select coupler 6, the second Polarization Controller 7 and less fundamental mode optical fibre 8.
The laser that narrow linewidth pump laser 1 exports carries out power amplification, amplified high power pump light by amplifier 2
Inject the first fiber mode selection coupler 3 first port 301, through the first fiber mode select coupler 3 after, pump light by
The fundamental transverse mode of single mode optical fiber is changed into few mould in the second port 302 of the first fiber mode selection coupler 3 in first port 301
The specific high-order mode of optical fiber, the high-order mode pump light of generation reinject the first port 501 of optical fiber circulator 5, then from fiber optic loop
The second port 502 of shape device 5 injects the first port 601 of the second fiber mode selection coupler 6, that is, enters in less fundamental mode optical fibre 8.
When the amplified pumping light power of image intensifer 2 is more than the Brillouin threshold of less fundamental mode optical fibre 8, it is excited cloth
In deep scattering effect, generate Brillouin's stokes light of inverted running.The Brillouin's stokes light generated in less fundamental mode optical fibre 8
First port 601, the second port 502 of optical fiber circulator 5, fiber annular successively through the second fiber mode selection coupler 6
The third port 503 of device 5 is again introduced into less fundamental mode optical fibre 8, and oscillation is formed in resonant cavity, that is, is generated one and compared pumping light frequency
Move down single order Brillouin's Stokes laser, this Brillouin's Stokes laser through the second fiber mode selection coupler 6 the
The output of three ports 603.First fiber mode selects the second port 302 of coupler 3 and the first port 501 of optical fiber circulator 5
Between the first Polarization Controller 4 and less fundamental mode optical fibre 8 on 7 co- controlling pump light of the second Polarization Controller and Brillouin pumping
The polarization state of light, to obtain maximum Brillouin's non-linear gain.
The first port 301 and the of narrow linewidth pump laser 1, image intensifer 2, the first fiber mode selection coupler 3
The tail optical fiber (connection optical fiber) of four ports 304 is common communications single mode optical fiber.Since the connection optical fiber in annular chamber is few
Mode fiber, and run with higher order mode, it is achieved that intracavitary higher order mode resonance amplifies, to select in the second fiber mode
The third port 603 of coupler 6 obtains the high-order mode laser of height mode purity.
Narrow linewidth pump laser, the narrow linewidth semiconductor laser that C-band power adjustable can be selected humorous or narrow linewidth
Optical fiber laser, line width are lower than 1MHz.
Image intensifer can select high-gain erbium-doped fiber amplifier or 1550nm wave band semiconductor optical amplifier.
First fiber mode selects coupler, is made from single mode optical fiber and less fundamental mode optical fibre fused biconical taper 2 × 2 coupling
The M8003 line coupling in the fundamental transverse mode and less fundamental mode optical fibre in single mode optical fiber between specific higher order mode, the first He may be implemented in device
4th port is single mode optical fiber, and second and third port are less fundamental mode optical fibre.
Optical fiber circulator, is less fundamental mode optical fibre circulator, and the tail optical fiber of three ports is less fundamental mode optical fibre.
Second fiber mode selects coupler, is made from less fundamental mode optical fibre and less fundamental mode optical fibre fused biconical taper 2 × 2 coupling
Device, may be implemented the M8003 line coupling in less fundamental mode optical fibre in specific higher order mode and less fundamental mode optical fibre between specific higher order mode, and four
The tail optical fiber of a port is less fundamental mode optical fibre.
Less fundamental mode optical fibre is the 1550nm wave band less fundamental mode optical fibre of general commercial, and the pattern count of support is greater than 2 modes, and length is big
In 20m.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (7)
1. a kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre characterized by comprising narrow linewidth pumping laser
Device, image intensifer, the first fiber mode selection coupler, the first Polarization Controller, optical fiber circulator, the selection of the second fiber mode
Coupler, the second Polarization Controller and less fundamental mode optical fibre；
Wherein, the optical fiber circulator is the three fiber port circulators equipped with first port, second port and third port；Institute
The narrow linewidth pump laser stated is connected to image intensifer；The image intensifer is connected to the first fiber mode selection coupler
The second port of first port, the first fiber mode selection coupler is connected to optical fiber circulator through the first Polarization Controller
First port；The second port of the optical fiber circulator connects the first port of the second fiber mode selection coupler；It is described
The second port of second fiber mode selection coupler is connected to optical fiber circulator through the second Polarization Controller and less fundamental mode optical fibre
Third port is constituted annular chamber with this；The third port of the second fiber mode selection coupler exports laser.
2. the high-order mode Brillouin optical fiber laser according to claim 1 based on less fundamental mode optical fibre, which is characterized in that described
Narrow linewidth pump laser, select the humorous narrow linewidth semiconductor laser or narrow cable and wide optical fiber laser of C-band power adjustable,
Line width is lower than 1MHz.
3. the high-order mode Brillouin optical fiber laser according to claim 1 based on less fundamental mode optical fibre, which is characterized in that described
Image intensifer, select high-gain erbium-doped fiber amplifier or 1550nm wave band semiconductor optical amplifier.
4. the high-order mode Brillouin optical fiber laser according to claim 1 based on less fundamental mode optical fibre, which is characterized in that described
The first fiber mode select coupler, be made from single mode optical fiber and less fundamental mode optical fibre fused biconical taper 2 × 2 coupler, can be with
Realize the M8003 line coupling in the fundamental transverse mode and less fundamental mode optical fibre in single mode optical fiber between specific higher order mode, first and the 4th port
For single mode optical fiber, second and third port be less fundamental mode optical fibre；Wherein, the pattern count that the less fundamental mode optical fibre is supported is greater than 2 moulds
Formula.
5. the high-order mode Brillouin optical fiber laser according to claim 1 based on less fundamental mode optical fibre, which is characterized in that described
Optical fiber circulator, be less fundamental mode optical fibre circulator, the tail optical fibers of three ports is less fundamental mode optical fibre.
6. the high-order mode Brillouin optical fiber laser according to claim 4 based on less fundamental mode optical fibre, which is characterized in that described
The second fiber mode select coupler, be made from less fundamental mode optical fibre and less fundamental mode optical fibre fused biconical taper 2 × 2 coupler, can be with
Realize the M8003 line coupling in less fundamental mode optical fibre in specific higher order mode and less fundamental mode optical fibre between specific higher order mode, four ports
Tail optical fiber is less fundamental mode optical fibre.
7. the high-order mode Brillouin optical fiber laser according to claim 1 based on less fundamental mode optical fibre, which is characterized in that described
Less fundamental mode optical fibre be 1550nm wave band less fundamental mode optical fibre, length be greater than 20m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551973.8U CN208862359U (en) | 2018-04-18 | 2018-04-18 | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551973.8U CN208862359U (en) | 2018-04-18 | 2018-04-18 | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208862359U true CN208862359U (en) | 2019-05-14 |
Family
ID=66410668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820551973.8U Active CN208862359U (en) | 2018-04-18 | 2018-04-18 | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208862359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390243A (en) * | 2018-04-18 | 2018-08-10 | 华南理工大学 | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre |
-
2018
- 2018-04-18 CN CN201820551973.8U patent/CN208862359U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390243A (en) * | 2018-04-18 | 2018-08-10 | 华南理工大学 | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre |
| CN108390243B (en) * | 2018-04-18 | 2023-08-22 | 华南理工大学 | High-order mode Brillouin fiber laser based on few-mode fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208849226U (en) | A kind of all -fiber vortex light laser based on orbital angular momentum mode resonances | |
| US12015235B2 (en) | All-fiber optical vortex laser based on resonance of orbital angular momentum modes | |
| CN108418086A (en) | A kind of all -fiber high-order mode Brillouin optical fiber laser | |
| Pureur et al. | Ytterbium-doped solid core photonic bandgap fiber for laser operation around 980nm | |
| CN108551075A (en) | A kind of high-order mode Brillouin laser that all -fiber transverse mode is changeable | |
| CN109217972B (en) | It is a kind of based on silicon substrate mode conversion on piece lack mould laser generation system and method | |
| CN104300344A (en) | High-power and tunable pulse fiber laser device | |
| CN107845946A (en) | A kind of all -fiber linear polarization mode-locked laser based on nonlinear optical loop mirror of cascaded pump | |
| CN103378539A (en) | Annular chamber broadband random fiber laser | |
| CN108390243A (en) | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre | |
| CN208862359U (en) | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre | |
| CN107834351A (en) | A kind of 1 mu m waveband post vector optical fiber laser based on model selection coupler | |
| CN114512884B (en) | Method for outputting high-order mode in graded-index optical fiber | |
| CN208723306U (en) | A kind of all -fiber high-order mode Brillouin optical fiber laser | |
| CN103746279B (en) | Double-resonant-cavity all-fiber single-frequency laser device | |
| CN102227043A (en) | Linearly polarized light fiber laser based on polarization maintaining fiber annular lens | |
| CN209298558U (en) | A kind of hectowatt grade high power full polarization fiber amplifier | |
| CN105896250A (en) | Multi-wavelength multi-core fiber laser | |
| CN110474226A (en) | A kind of vortex light single frequency optical fiber laser | |
| CN109449732A (en) | A kind of novel Q modulation dual wavelength fibre laser based on rare-earth doped optical fibre | |
| CN102163801A (en) | Optoelectronic oscillator with active semiconductor resonant cavity | |
| CN1279664C (en) | Tunable single longitudinal mode optical fiber laser for eliminating beat frequency noise | |
| CN208849228U (en) | A kind of high-order mode Brillouin laser that all -fiber transverse mode is changeable | |
| CN207459395U (en) | Based on the adjustable bicyclic chaos laser of controllable doped fiber of loss | |
| CN202384632U (en) | Coherent beam-combination high power fiber laser based on short line cavity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |