CN109038187A - A kind of tunable wave length graphene oxide mode-locked all fibre mixes thulium laser - Google Patents
A kind of tunable wave length graphene oxide mode-locked all fibre mixes thulium laser Download PDFInfo
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- CN109038187A CN109038187A CN201810787447.6A CN201810787447A CN109038187A CN 109038187 A CN109038187 A CN 109038187A CN 201810787447 A CN201810787447 A CN 201810787447A CN 109038187 A CN109038187 A CN 109038187A
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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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
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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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
-
- 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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention belongs to the structure of active medium or shape technology fields, it discloses a kind of tunable wave length graphene oxide mode-locked all fibre and mixes thulium laser, pumping source pumps input single mode optical fiber by bundling device, mix thulium single-mode double-clad optical fiber and single mode optical fiber welding, one end of multiple-mode interfence filter and thulium single-mode double-clad fused fiber splice is mixed, the other end is fixed on accurate translation stage;FC/APC fusion splicer and the welding of multiple-mode interfence filter, polarize unrelated isolator and the welding of FC/APC fusion splicer, polarize unrelated isolator and output coupler welding, coupler output and the collimator with 1.5m tail optical fiber and Polarization Controller welding, Polarization Controller and bundling device welding.Graphene oxide is that one kind is had excellent performance and low-cost new material;The tunable of 2 μm of output wavebands is realized in the optical fiber laser of all-fiber, structure is simple and convenient to operate, stability is high, can satisfy more practical applications.
Description
Technical field
The invention belongs to the structure of active medium or shape technology field more particularly to a kind of tunable wave length graphite oxides
Alkene mode-locked all fibre mixes thulium laser.
Background technique
Currently, the prior art commonly used in the trade is such that ultra-short pulse laser typically refers to pulse width in time-domain
For the light pulse of picosecond (ps) or femtosecond (fs) magnitude.The generation of pulse laser is usually to be obtained by Q-regulating technique or mode-locking technique
, but Q-regulating technique generally can only obtain the pulse that pulse width is nanosecond (ns) magnitude, to obtain shorter laser pulse
It need to be by mode-locking technique.Mode locking generally refers to realize PGC demodulation to the different mode lockings run in laser cavity in laser.By lock
Mould mechanism point mainly has active mode locking and passive mode-locking.With the development of laser technology, ultra-short pulse laser is with its peak value function
Rate, the characteristics such as extremely short pulse width and wide spectrum are widely used in various fields, are not in communication, military state
The fields such as anti-, material processing and laser medicine.In recent years, optical fiber laser is good with its thermal diffusivity, beam quality is high, structure is tight
It gathers, compact, low in cost, light light conversion efficiency is high, environmental stability is good and it is substituted greatly to exempt from the various advantages such as debugging
The gesture of Conventional solid-state lasers.Gain media is generally rare earth ion doped optical fiber, common Doped ions in optical fiber laser
There are erbium (Er), ytterbium (Yb), thulium (Tm), holmium (Ho), praseodymium (Pm) and dysprosium (Dy) etc., wherein the gain spectra of thulium doped fiber is wider,
It can realize that laser exports within the scope of 1700nm-2100nm, the wavelength of this wave band is in human eye safe waveband, can be widely applied to
Scientific research, laser radar, laser medicine, photoelectronic warfare, pumping mid-infrared laser device and the processing of special material etc.;This
Outside, the stimulated Brillouin scattering of thulium doped fiber and stimulated Raman scattering generation threshold value are higher, dive in terms of realizing high power operating
Power is huge;Based on These characteristics, the research of thulium-doped fiber laser is meaningful, imperative.Passive mode-locking fiber laser
Can produce shorter wavelength compared to Active Mode-locked Fiber Laser, and its stability is more preferable, be not easy it is affected by environment, optical fiber swash
Passive mode-locking mode in light device mainly have nonlinear polarization rotation mode locking (NPR), nonlinear amplifying loop mirror mode locking (NALM) and
Use saturable absorber etc.;Common saturable absorber has commercially commercially available semiconductor saturable absorber SESAM
And the brand-new material of recent years such as carbon nanotube and graphene etc., SESAM complex manufacturing technology, expensive, damage threshold
It is relatively narrow to be worth lower and operating wavelength range;Carbon nanotube is although low in cost, but its working range is related with carbon pipe diameter, due to
Its diameter is uncontrollable in manufacturing process, causes insertion loss larger, and its job stability need to be improved;Before graphene is compared
Two kinds of saturable absorbers are also easy to make while with excellent nonlinear optical properties, cheap spy
Property, as the predecessor of graphene, graphene oxide is easier to make while excellent optical properties various with graphene, fits
In large-scale industrial production, and the good hydrophily of graphene oxide keeps it more flexible when preparing saturable absorber
Property.The prior art one mixes thulium mode locked fiber laser based on graphene oxide saturable absorber.It is sharp with ytterbium, Er-doped fiber is mixed
Light device is in comparison, less with the thulium-doped fiber laser report of graphene oxide mode locking, and reported graphene oxide is locked
Mould thulium-doped fiber laser cannot carry out wavelength tuning mostly, be unable to satisfy more applications.Tuning skill reported at present
In art, mostly use half space structure greatly, stability is not high and structure is complicated or all optical fibre structure in introduce fiber grating carry out
Tuning, and fiber grating complex manufacturing technology, introduce larger insertion loss, and harmony is inconvenient.The prior art two is based on conical fiber
Carbon nanotube saturable absorber mode locking tunable whole-optical fiber thulium-doped fiber laser, wherein tunable mechanism use cone
Shape optical fiber filter, pumping source are the 1571nm laser of output power 500mW.Wherein, use pumping wavelength for 1571nm's
Pumping efficiency is lower compared with another absorption peak 793nm of thulium doped fiber;The production of tapered fiber filters needs to carry out accurate
Optical fiber draws cone, and expensive large-scale heat sealing machine and Superclean Lab, manufacturing conditions is needed to require high.The prior art three is based on more
The 2 mu m waveband tunable optical fiber lasers that Mode interference filter is realized, with the centreless that one section of length is 12.80cm, diameter is 200 μm
Silica fibre generates high-order mode, and centreless silica fibre is expensive, is not easy to obtain in the market, and around coreless fiber also
One layer of index-matching fluid is needed to be used to change the effective diameter of coreless fiber, to reach the mesh of the selection to central wavelength
, it is complicated for operation, expensive, and the welding bring insertion loss of coreless fiber and general single mode fiber is big, can not neglect
Slightly.
In conclusion problem of the existing technology is:
(1) prior art one is not available for wave based on the thulium mode locked fiber laser of mixing of graphene oxide saturable absorber
Long tuning, is unable to satisfy more applications;Using half space structure, stability is not high and structure is complicated or all optical fibre structure
Middle introducing fiber grating is tuned, fiber grating complex manufacturing technology, introduces larger insertion loss, and harmony is inconvenient.
(2) tunable whole-optical fiber of carbon nanotube saturable absorber mode locking of the prior art two based on conical fiber mixes thulium
Optical fiber laser needs expensive large-scale heat sealing machine and Superclean Lab, manufacturing conditions to require high.
(3) the 2 mu m waveband tunable optical fiber lasers that the prior art three is realized based on multiple-mode interfence filter, with centreless stone
English optical fiber is expensive, is not easy to obtain in the market;One layer of index-matching fluid is also needed to be used to change nothing around coreless fiber
The effective diameter of core fibre achievees the purpose that the selection to central wavelength, complicated for operation, expensive, and coreless fiber with
The welding bring insertion loss of general single mode fiber is big, can not ignore.
Solve the difficulty and meaning of above-mentioned technical problem: the multiple-mode interfence filter (single mode-multimode-used in the present invention
Single mode, that is, SMS structure), with commercially available single mode optical fiber, multimode fibre welding, pattern match is good, welding damage
Consumption substantially reduces.Length by finely tuning multimode fibre achievees the purpose that, realization wavelength tuning technology tunable to output wavelength,
Provide a kind of simple, easy to make, the low-cost novel 2 mu m waveband all -fiber Wavelength tunable laser of structure.
Summary of the invention
In view of the problems of the existing technology, it is fine that the present invention provides a kind of tunable wave length graphene oxide mode-locked alls
Mix thulium laser, communication system.
The invention is realized in this way a kind of tunable wave length graphene oxide mode-locked all fibre mixes thulium laser, it is described
Tunable wave length graphene oxide mode-locked all fibre is mixed thulium laser and is provided with
Pumping source;
Pumping source pumps input single mode optical fiber by bundling device, mixes thulium single-mode double-clad optical fiber and single mode optical fiber phase welding,
One end of multiple-mode interfence filter and thulium single-mode double-clad fused fiber splice is mixed, the other end is fixed on accurate translation stage;FC/APC
Fusion splicer and the welding of multiple-mode interfence filter, polarize unrelated isolator and the welding of FC/APC fusion splicer, polarize unrelated isolator and
Output coupler welding, coupler output and the collimator with 1.5m tail optical fiber and Polarization Controller welding, Polarization Controller with
Bundling device welding.
Further, the pumping source be semiconductor laser, output center wavelength 792nm, maximum average power 4W,
Tail optical fiber is to mix thulium single-mode double-clad optical fiber, and the parameter of multimode pigtail is 105/125, numerical aperture 0.15.
Further, the bundling device signal input-output optical fiber is the passive fiber to match with gain fibre, pump light
It pumps input optical fibre by bundling device to couple in inlet signal output optical fibre covering, pump mode is all -fiber cladding pumping.
Further, the thulium single-mode double-clad optical fiber of mixing is 10/130 single-mode double-clad optical fiber, in 793nm cladding pumping
Under, fibre core absorption coefficient is 3dB/m;Mixing thulium single-mode double-clad fiber lengths is 4m, after gain fibre with single mode optical fiber welding.
Further, multiple-mode interfence filter both ends are respectively 20cm single mode optical fiber, and thulium single mode pair is mixed for 5cm's long in centre
Cladded-fiber is mixed thulium single-mode double-clad optical fiber one end and is fixed, and the other end is fixed on accurate translation stage.
Further, the FC/APC fusion splicer is the fusion splicer containing graphene oxide, transparent graphene oxide wallpaper
It is pasted onto the top APC in FC/APC fusion splicer by Van der Waals force, by flange welding, both ends welding is in annular chamber.
Further, the unrelated isolator of the polarization guarantees signal light unidirectional operation in annular chamber, tail optical fiber length 1m, tail optical fiber
For SMF-28 optical fiber, receiving mean power is 2W, bears the peak power of 10KW to nanosecond pulse, bandwidth range 2000nm ±
10nm。
Further, the Polarization Controller is added on passive fiber, for controlling the polarization state of endovenous laser, in pumping function
Start mode locking under rate.
Further, the coupler has a 10:90, and two kinds of 50:50, output end and the collimator welding with 1.5m tail optical fiber are quasi-
Straight device bandwidth range is 2000nm ± 10nm, and optical fiber light is changed into spatial light using the collimator with tail optical fiber.
Another object of the present invention is to provide a kind of application tunable wave length graphene oxide mode-locked all fibres to mix
The communication system of thulium laser.
In conclusion advantages of the present invention and good effect are as follows: graphene oxide is that one kind is had excellent performance and low in cost
New material;Realize the tunable of 2 μm of output wavebands in the optical fiber laser of all-fiber, structure is simple and convenient to operate,
Stability is high, can satisfy more practical applications.
Manufacture craft | Cost of manufacture | Insertion loss | Stability | |
The prior art one | It is complicated | It is high | Greatly | Difference |
The prior art two | It is complicated | It is high | It is larger | Difference |
The prior art three | It is complicated | It is high | Greatly | It is poor |
The present invention | Simply | It is low | It is small | It is high |
Detailed description of the invention
Fig. 1 is that tunable wave length graphene oxide mode-locked all fibre provided in an embodiment of the present invention is mixed thulium laser structure and shown
It is intended to;
Fig. 2 is full fiber type multiple-mode interfence filter construction schematic diagram provided in an embodiment of the present invention;
Fig. 3 is the schematic diagram of saturable absorber provided in an embodiment of the present invention;
In figure: 1, pumping source;2, bundling device;3, single mode optical fiber;4, thulium single-mode double-clad optical fiber is mixed;5, multiple-mode interfence filters
Device;6, FC/APC fusion splicer;7, unrelated isolator is polarized;8, Polarization Controller;9, output coupler;10, collimator.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The multiple-mode interfence filter (single mode-multi-mode-single mode i.e. SMS structure) used in the present invention, with can get in the market
Single mode optical fiber, mix 4 welding of thulium single-mode double-clad optical fiber, pattern match is good, and splice loss, splice attenuation substantially reduces.Pass through fine tuning
Mix thulium single-mode double-clad optical fiber 4 length achieve the purpose that it is tunable to output wavelength, realize wavelength tuning technology, provide one
Kind simple, easy to make, the low-cost novel 2 mu m waveband all -fiber Wavelength tunable laser of structure.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, tunable wave length graphene oxide mode-locked all fibre provided in an embodiment of the present invention mixes thulium laser
Include: pumping source 1, bundling device 2, single mode optical fiber 3, mix thulium single-mode double-clad optical fiber 4, multiple-mode interfence filter 5, FC/APC welding
Device 6, the unrelated isolator 7 of polarization, Polarization Controller 8, output coupler 9, collimator 10.
Pumping source 1 mixes thulium single-mode double-clad optical fiber 4 and single mode optical fiber 3 is molten by the pumping input single mode optical fiber 3 of bundling device 2
It connects, one end of multiple-mode interfence filter 5 and mixes 4 welding of thulium single-mode double-clad optical fiber, the other end is fixed on accurate translation stage;
FC/APC fusion splicer 6 and 5 welding of multiple-mode interfence filter polarize unrelated isolator 7 and 6 welding of FC/APC fusion splicer, polarize nothing
Isolator 7 and 9 welding of output coupler are closed, 9 output end of coupler and the collimator 10 with 1.5m tail optical fiber and Polarization Controller 8 melt
It connects, Polarization Controller 8 and 2 welding of bundling device.
In a preferred embodiment of the invention: pumping source 1 is semiconductor laser, and output center wavelength 792nm is maximum
Mean power is 4W, and tail optical fiber is to mix thulium single-mode double-clad optical fiber 4, and the parameter of multimode pigtail is 105/125, and numerical aperture is
0.15。
In a preferred embodiment of the invention: annular chamber device.
In a preferred embodiment of the invention: 2 signal input-output optical fiber of (2+1) * 1 bundling device is and gain fibre phase
The passive fiber matched, pump light pump input optical fibre by bundling device and couple in inlet signal output optical fibre covering, and pump mode is
All -fiber cladding pumping.
In a preferred embodiment of the invention: mixing thulium single-mode double-clad optical fiber 4 is 10/130 single-mode double-clad optical fiber,
Under 793nm cladding pumping, fibre core absorption coefficient is 3dB/m;Mixing thulium single-mode double-clad fiber lengths is 4m, after gain fibre with list
3 welding of mode fiber.
In a preferred embodiment of the invention: 5 both ends of multiple-mode interfence filter are respectively 20cm single mode optical fiber, and centre is 5cm
Long mixes thulium single-mode double-clad optical fiber 4, mixes 4 one end of thulium single-mode double-clad optical fiber and fixes, and the other end is fixed on accurate translation stage,
Accurately control its length.
In a preferred embodiment of the invention: FC/APC fusion splicer 6 is the fusion splicer containing graphene oxide, transparent oxygen
Graphite alkene wallpaper is pasted onto the top APC in FC/APC fusion splicer 6 by Van der Waals force, is welding together by flange, and both ends are molten
It connects in annular chamber.
In a preferred embodiment of the invention: 2 mu m polarized unrelated isolators 7, for guaranteeing that signal light is single in annular chamber
To operation, tail optical fiber length 1m, tail optical fiber is SMF-28 optical fiber, and receiving mean power is 2W, can be born for nanosecond (ns) pulse
The peak power of 10KW, bandwidth range 2000nm ± 10nm.
In a preferred embodiment of the invention: Polarization Controller 8 is added on passive fiber, for controlling the inclined of endovenous laser
Polarization state starts mode locking under appropriate pump power.
In a preferred embodiment of the invention: coupler 9 has a 10:90, two kinds of 50:50, output end with 1.5m tail optical fiber
Collimator 10 (SR6873) welding, 10 bandwidth range of collimator are 2000nm ± 10nm, will using this collimator 10 with tail optical fiber
Optical fiber light is changed into spatial light.
In the present invention multiple-mode interfence filter use all optical fiber ring cavity structure, composition include: average output power be 4W,
(2+1) * 1 bundling device (MPC (2+1) * 1- of semiconductor pumping sources (VLSM-793-B-004), customization that central wavelength is 792nm
F-793/4W-2000-120/999 (FUD3916-10/125DCF) -999 (FUD3916-10/125DCF)-C4-0.8M), signal
Input-output optical fiber is 10/125 doubly clad optical fiber to match with gain fibre, length in reserve 0.8m, pump light input
End single armed can bear maximum luminous power 4W.Semiconductor laser with tail optical fiber is matched good by bundling device and pumping optical fiber welding
Good, pump light is coupled into annular chamber by bundling device.Length is the double clad single mode thulium doped fiber (NufernTDF- of 4m
10P/130), under 793nm pumping, covering is absorbed as 3dB/m, and fibre core numerical aperture is 0.15, and covering numerical aperture is 0.46.
This section of optical fiber is the gain media of oscillator.This annular chamber is single by low water peak single mode fiber (Corning SMF-28e) welding
The length of mode fiber can change as the case may be.Self-control one, multiple-mode interfence filter as needed, multiple-mode interfence filtering
Device is full fiber type, and the interference between guided wave mode is its basic functional principle, and this SMS optical fiber structure is rung with sensitive spectrum
Should with environmental response characteristic, by its working principle it is found that the central wavelength of multiple-mode interfence filter and mixing thulium single-mode double-clad light
The sensitive parameter of fibre 4 is related, such as mixes length, core diameter or the effective refractive index etc. of thulium single-mode double-clad optical fiber 4.The present invention
In multiple-mode interfence filter both ends be respectively made of the single mode optical fiber of 20cm (Corning SMF-28e), centre be 5cm mix thulium list
Mould doubly clad optical fiber 4 (Nufern S105/125-12A) is examined two kinds of optical fiber matchings good.The system of multiple-mode interfence filter
Work can be completed using portable fusion splice machine, the heat sealing machine model Fujikura 80S used in the present invention.The filter system
Manually control so that reaching to mixing thulium single mode double-contracting in filter using precision machinery device (NF15AP25) after the completion of making
The accurate control of layer 4 length of optical fiber, the length of thulium single-mode double-clad optical fiber 4 is mixed by changing, and is changed by precision unit of 1.5mm
4 length of thulium single-mode double-clad optical fiber is mixed, filter center wavelength can be changed, reach the mesh being tuned to laser output wavelength
's.Coupler output and collimator (SR6873) welding with 1.5m tail optical fiber, collimator bandwidth range are 2000nm ± 10nm,
Lens diameter 1mm in collimator, operating distance 20mm, maximum bear power 300mW.Using this collimator with tail optical fiber by optical fiber
Light is changed into spatial light, and output end is also avoided while guaranteeing good output beam quality and cuts 8 ° of angles to prevent output disconnected
The Fresnel reflection in face.Using two microns of melting couplers (SMC-1-2000-10-N-B-Q-1) of single mode as the defeated of oscillator
Outlet, a length of 0.75m of tail optical fiber, it is 500mW, bandwidth range 1990nm-2010nm, alternative coupling that maximum, which bears optical power,
Output ratio has 10:90 and two kinds of 50:50.Isolator in annular chamber with tail optical fiber is 2 mu m polarized unrelated isolator (PDSI-2000-
2-N-L-1-1-P), it for guaranteeing that signal light unidirectional operation in annular chamber, tail optical fiber length 1m, tail optical fiber are SMF-28 optical fiber, holds
It is 2W by mean power, the peak power of 10KW, bandwidth range 2000nm ± 10nm can be born for nanosecond (ns) pulse.Contain
There is the wallpaper of graphene oxide to carry out mode locking as saturable absorption material (GO-SA), it is molten using commercially available FC/APC
It meets device and flange (connet) graphene oxide wallpaper is added in annular chamber.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of tunable wave length graphene oxide mode-locked all fibre mixes thulium laser, which is characterized in that the tunable wave length
Graphene oxide mode-locked all fibre is mixed thulium laser and is provided with
Pumping source;
Pumping source crosses bundling device pumping input single mode optical fiber, mixes thulium single-mode double-clad optical fiber and single mode optical fiber welding, multiple-mode interfence
One end of filter and thulium single-mode double-clad fused fiber splice is mixed, the other end is fixed on accurate translation stage;FC/APC fusion splicer with
Multiple-mode interfence filter welding polarizes unrelated isolator and the welding of FC/APC fusion splicer, polarizes unrelated isolator and output coupling
Device welding, coupler output and the collimator with 1.5m tail optical fiber and Polarization Controller welding, Polarization Controller and bundling device are molten
It connects.
2. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
Stating pumping source is semiconductor laser, and output center wavelength 792nm, maximum average power 4W, tail optical fiber is to mix thulium single mode pair
Cladded-fiber, the parameter of multimode pigtail are 105/125, numerical aperture 0.15.
3. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
Stating bundling device signal input-output optical fiber is the passive fiber to match with gain fibre, and pump light is pumped by bundling device and inputted
In fiber coupling inlet signal output optical fibre covering, pump mode is all -fiber cladding pumping.
4. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
It states and mixes thulium single-mode double-clad optical fiber for 10/130 single-mode double-clad optical fiber, under 793nm cladding pumping, fibre core absorption coefficient is
3dB/m;Mixing thulium single-mode double-clad fiber lengths is 4m, after gain fibre with single mode optical fiber welding.
5. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
Stating multiple-mode interfence filter both ends is respectively 20cm single mode optical fiber, and thulium single-mode double-clad optical fiber is mixed for 5cm's long in centre, mixes thulium single mode
Doubly clad optical fiber one end is fixed, and the other end is fixed on accurate translation stage.
6. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
Stating FC/APC fusion splicer is the fusion splicer containing graphene oxide, and transparent graphene oxide wallpaper is pasted by Van der Waals force
The top APC in FC/APC fusion splicer, by flange welding, both ends welding is in annular chamber.
7. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
It states the unrelated isolator of polarization and guarantees that signal light unidirectional operation in annular chamber, tail optical fiber length 1m, tail optical fiber are SMF-28 optical fiber, bear
Mean power is 2W, and the peak power of 10KW, bandwidth range 2000nm ± 10nm are born to nanosecond pulse.
8. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
It states Polarization Controller to be added on passive fiber, for controlling the polarization state of endovenous laser, starts mode locking under pump power.
9. tunable wave length graphene oxide mode-locked all fibre as described in claim 1 mixes thulium laser, which is characterized in that institute
Stating coupler has 10:90, and two kinds of 50:50, output end and the collimator welding with 1.5m tail optical fiber, collimator bandwidth range are
Optical fiber light is changed into spatial light using the collimator with tail optical fiber by 2000nm ± 10nm.
10. tunable wave length graphene oxide mode-locked all fibre described in a kind of application claim 1~9 any one mixes Thulium lasers
The communication system of device.
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CN110635346A (en) * | 2019-07-04 | 2019-12-31 | 天津大学 | Ring cavity 1.7um thulium-doped all-fiber laser |
CN110649452A (en) * | 2019-09-27 | 2020-01-03 | 北京航空航天大学 | High-power wavelength-adjustable all-fiber nanosecond pulse laser and system |
CN111999815A (en) * | 2020-07-24 | 2020-11-27 | 华南师范大学 | Tunable optical fiber filter based on few-mode-multimode-few-mode structure |
CN112186490A (en) * | 2019-07-03 | 2021-01-05 | 苏州曼德特光电技术有限公司 | Automatic mode-locked laser and mode-locking parameter determination method and system thereof |
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US20220085565A1 (en) * | 2019-02-21 | 2022-03-17 | Fujikura Ltd. | Fiber laser device |
US11901690B2 (en) * | 2019-02-21 | 2024-02-13 | Fujikura Ltd. | Fiber laser device |
CN112186490A (en) * | 2019-07-03 | 2021-01-05 | 苏州曼德特光电技术有限公司 | Automatic mode-locked laser and mode-locking parameter determination method and system thereof |
CN112186490B (en) * | 2019-07-03 | 2022-07-12 | 苏州曼德特光电技术有限公司 | Automatic mode-locked laser and mode-locking parameter determination method and system thereof |
CN110635346A (en) * | 2019-07-04 | 2019-12-31 | 天津大学 | Ring cavity 1.7um thulium-doped all-fiber laser |
CN110649452A (en) * | 2019-09-27 | 2020-01-03 | 北京航空航天大学 | High-power wavelength-adjustable all-fiber nanosecond pulse laser and system |
CN111999815A (en) * | 2020-07-24 | 2020-11-27 | 华南师范大学 | Tunable optical fiber filter based on few-mode-multimode-few-mode structure |
CN111999815B (en) * | 2020-07-24 | 2022-09-30 | 华南师范大学 | Tunable optical fiber filter based on few-mode-multimode-few-mode structure |
CN113131317A (en) * | 2021-03-03 | 2021-07-16 | 长春理工大学 | Tunable mode-locked fiber laser based on single-mode double-eccentric-core structure and control method |
CN113131317B (en) * | 2021-03-03 | 2022-05-10 | 长春理工大学 | Tunable mode-locked fiber laser based on single-mode double-eccentric-core structure and control method |
CN113131318A (en) * | 2021-03-05 | 2021-07-16 | 长春理工大学 | Tunable mode-locked fiber laser based on spiral mechanism, preparation method and output method |
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