CN107482429A - Optical fiber laser - Google Patents
Optical fiber laser Download PDFInfo
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- CN107482429A CN107482429A CN201710792850.3A CN201710792850A CN107482429A CN 107482429 A CN107482429 A CN 107482429A CN 201710792850 A CN201710792850 A CN 201710792850A CN 107482429 A CN107482429 A CN 107482429A
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- optical fiber
- graphene film
- fiber laser
- optical
- tuning device
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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
-
- 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
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/107—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using electro-optic devices, e.g. exhibiting Pockels or Kerr effect
-
- 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The present invention relates to a kind of optical fiber laser.The optical fiber laser includes pump light source, resonant optical path, tuning device and current regulating device；Pump light source provides pump light for resonant optical path；Tuning device is arranged on resonant optical path, and tuning device includes graphene film and the first optical fiber, and graphene film covers the end face of the fibre core of first optical fiber one end；Current regulating device is connected with graphene film, and current regulating device is used to make graphene film be powered, and adjusts the electric current by graphene film.Above-mentioned optical fiber laser, on the one hand, pass through the current adjustment section of graphene film, then the temperature of graphene film can adjust, and the modulation depth of laser of the tuning device for being transmitted through it changes so that the performance of optical fiber laser is tunable.On the other hand, tuning device is the optical fibre device that the first optical fiber integrates with graphene film, and therefore, loss when optical signal is transmitted by tuning device is smaller, makes the tuning effect of optical fiber laser good.
Description
Technical field
The present invention relates to field of laser device technology, more particularly to a kind of optical fiber laser.
Background technology
Based on the optical fiber laser of graphene due to high-frequency ultrashort pulse can be produced, optic communication, Fibre Optical Sensor,
The various fields such as detection diagnosis, biomedicine, super micro-processing, military affairs have wide prospect.Graphene is that chemical property is steady
It is fixed, there is strong electric conductivity and light conductivity, be the novel nano-material for being used for optical fiber laser locked mode as saturable absorber, with
So that the better performances of optical fiber laser.
If the performance of graphene can adjust, then the performance of the optical fiber laser based on graphene can also be realized adjustable
It is humorous.Graphene can be made to FET at present to be applied in optical fiber laser, by the grid voltage for adjusting FET
To realize the regulation to the performance of graphene, so as to realize that the performance of optical fiber laser is tunable.But the field based on graphene
Effect pipe can increase the loss of optical fiber laser, cause the tuning effect of optical fiber laser bad.
The content of the invention
Based on this, it is necessary to in traditional optical fiber laser based on graphene, the tuning effect of optical fiber laser
A kind of the problem of bad, there is provided optical fiber laser.
A kind of optical fiber laser, including pump light source and resonant optical path；The pump light source provides for the resonant optical path
Pump light；Characterized in that, the optical fiber laser also includes tuning device and current regulating device, the tuning device is set
On the resonant optical path, the tuning device includes graphene film and the first optical fiber, the graphene film covering described first
The end face of the fibre core of optical fiber one end；The current regulating device is connected with the graphene film, and the current regulating device is used for
The graphene film is powered, and adjust the electric current by the graphene film.
Above-mentioned optical fiber laser, tuning device is arranged on resonant optical path, and graphene film covers the first optical fiber
The end face of fibre core, it is powered when resonator works to graphene film.On the one hand, the current adjustment section of graphene film is passed through, then
The temperature of graphene film can adjust, and therefore, the distribution of Fermi's dirac of graphene film can change, so tuning device for through
The modulation depth of its laser transmitted changes, so that the performance of optical fiber laser is tunable.As long as also, change and pass through stone
The size of the electric current of black alkene film, tuning device can be with the outputs of neatly the first optical fiber laser so that optical fiber laser
Application is wider.On the other hand, tuning device is by the end face of the first optical fiber and the fibre core for being covered in first optical fiber one end
Graphene film form, i.e. the tuning device optical fibre device that to be the first optical fiber integrate with graphene film, therefore, tuning device passes through
The mode of fiber coupling is in the light path for can access resonator.Loss when so optical signal is transmitted by tuning device is smaller.
To sum up state, tuning device make it that the tuning effect of optical fiber laser is preferable.
In one of the embodiments, the tuning device also includes two electrodes, two electrodes respectively with it is described
Graphene film is connected, and the graphene film is connected into the current regulating device.
In one of the embodiments, first optical fiber is also coated on the covering outside the fibre core；Close to institute
The fibre core for stating graphene film is extended to outside the covering, forms external part；Two electrodes are disposed in proximity to described
On the end face of the covering of external part, and two electrodes are separated by the external part.
In one of the embodiments, the shape of two electrodes is semicylinder, the bottom surface of two electrodes
Each parallel to the graphene film；Covered by the graphene film bottom of the close graphene film of two electrodes
Lid.
In one of the embodiments, two electrodes are metal electrode.
In one of the embodiments, the resonant optical path is annular resonance light path；The optical fiber laser also includes passing
Fibre is lost, light is propagated in the resonant optical path by the Transmission Fibers.
In one of the embodiments, the optical fiber laser also includes gain fibre and the first coupling element, the increasing
Beneficial optical fiber is arranged on the resonant optical path, and pump light is incident to the gain fibre, work of the gain fibre in pump light
With lower generation laser, by the laser light incident that the gain fibre is emitted to the tuning device；First coupling element is set
In on the resonant optical path, first coupling element receives the emergent light of the tuning device, and first coupling element is used
In the optical signal beam splitting that will be received, wherein a branch of optical signal as the optical fiber laser output laser to the harmonic light
Launch outside road.
In one of the embodiments, first coupling element includes the first exit end and the second exit end, and described
One coupling element is used to optical signal being divided into two beams, wherein a branch of optical signal is sent out as output laser from first exit end
Penetrate, another beam optical signal is emitted by second exit end, and continues to propagate on the resonant optical path；The optical-fiber laser
Device also includes the second coupling element, and second coupling element is arranged on the resonant optical path, and second coupling element connects
The optical signal of pump light and second exit end is received, second coupling element is used for pump light and second exit end
The optical signal of outgoing closes beam, and the emergent light of second coupling element is incident to the gain fibre.
In one of the embodiments, the optical fiber laser also includes isolation element, point of first coupling element
Light ratio is 9:1,10% optical signal is launched as output laser from first exit end, and 90% optical signal passes through described the
Two exit ends are emitted.
In one of the embodiments, the optical fiber laser also includes isolation element and polarization control component, it is described every
The gain fibre is arranged to the light path of the tuning device from element.
In one of the embodiments, the isolation element is used for the one-way transmission for ensureing light；The polarization control component
The isolation element is arranged to the light path of the tuning device, the polarization control component is used for the polarization for adjusting optical signal
State.
Brief description of the drawings
Fig. 1 is the schematic diagram of the optical fiber laser of an embodiment；
Fig. 2 is the structural representation of the tuning device shown in Fig. 1.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
Fig. 1 is the schematic diagram of the optical fiber laser 100 of the present embodiment.As shown in figure 1, a kind of optical fiber laser 100 includes
Resonant optical path 110, tuning device 120 and current regulating device (not shown).Tuning device 120 is arranged on resonant optical path 110,
Tuning device 120 includes graphene film (Fig. 1 is not shown) and the first optical fiber (Fig. 1 is not shown).In the present embodiment, the first optical fiber is
Single-mode fiber.Graphene film covers the end face of the fibre core of first optical fiber one end.Current regulating device is connected with graphene film, electric current
Adjusting means is used to make graphene film be powered, and adjusts the electric current by graphene film.
Specifically, the Fermi Dirac distribution of graphene is：
In formula (1), kBIt is Boltzmann constant, E is the energy of the quantum state of graphene, EfIt is the chemical potential of graphene, T
It is the temperature of graphene.For graphene, E and EfIt is constant, therefore, the temperature of graphene determines its Fermi's dirac point
Cloth.And the optics electrical conductivity or saturable absorption characteristic of graphene are determined by the distribution of Fermi's dirac.So it can pass through
Change temperature to change the optics electrical conductivity of graphene or saturable absorption characteristic, you can be adjusted by changing temperature to reach
The purpose of humorous graphene performance.
Graphene film has resistance, and due to ohm effect, graphene film generates heat in the case of energization, so as to graphene film
Temperature rise.Further, the electric current by graphene film is changed, it is possible to change the temperature of graphene film, so as to
Reach the optics electrical conductivity or saturable absorption characteristic of tuning graphene.
In present embodiment, tuning device 120 realizes optical-fiber laser mainly by way of tuning graphene performance
Device 100 exports the tunable purpose of laser.Specifically, the current adjustment section of graphene film, the temperature of graphene film can make it that
Degree is adjustable, so that tuning device 120 can realize that the output laser of optical fiber laser 100 is tunable.
Above-mentioned optical fiber laser 100, tuning device 120 is arranged on resonant optical path 110, tuning device 120 is connect
Enter in resonant optical path 110.And graphene film covers the end face of the fibre core of the first optical fiber.When resonant optical path 110 works, electric current
Adjusting means makes graphene film be powered, and adjusts the electric current by graphene film.On the one hand, the current adjustment of graphene film is passed through
Section, then the temperature of graphene film can adjust, and therefore, Fermi's dirac distribution of graphene film can change, and then tuning device
The modulation depth of 120 laser for being transmitted through it changes, so that the performance of optical fiber laser 100 is tunable.Also,
Change the size of the electric current by graphene film, tuning device 120 can be made with the output of neatly the first optical fiber laser 100
The application for obtaining optical fiber laser 100 is wider.For example, by the electric current of graphene film by 0A (ampere) when, tuning device 120
Modulation depth to laser is 2.3%, it is possible to achieve the locked mode of optical fiber laser 100, the larger pulse laser of output linewidth can
Applied to technical field of laser processing.When the electric current by graphene film is adjusted to 9A, then the temperature rise of graphene film, is tuned
Device 120 is 0.9% to the modulation depth of laser, and tuning device 120 does not almost have locked mode effect, therefore optical-fiber laser to laser
What device 100 exported is continuous laser, and is the less one-wavelength laser of line width, can be applied to the communications field.On the other hand, tuner
Part 120 is made up of the graphene film on the end face of the first optical fiber and the fibre core for being covered in first optical fiber one end, i.e. tuning device
120 be the optical fibre device that the first optical fiber integrates with graphene film, and therefore, tuning device 120 is by way of fiber coupling
Access on resonant optical path 110.Loss when so optical signal is transmitted by tuning device 120 is smaller.In summary, tuning device
120 make it that the tuning effect of optical fiber laser 100 is preferable.
It should be noted that one device of optical signals, which propagates to another device, refers to that one device of optical signals is direct
Another device, or one device outgoing of optical signals are propagated to, another device is propagated to by intermediary device.
For the present embodiment by taking full-optical-fiber laser as an example, i.e., each device in optical fiber laser 100 is all fiber optic component.It is humorous
Light path of shaking 110 is annular resonance light path, and each fiber optic component makes whole resonant optical path 110 form one by the method for fused fiber splice
In individual entirety, i.e. the present embodiment, the resonant optical path 110 where each fiber optic component forms optical resonator, and humorous for annular
Shake chamber.This structure not only make the structure of optical fiber laser 100 it is simple, it is compact, from safeguarding, and the coupling efficiency of pump light
It is higher.
Optical fiber laser 100 also includes Transmission Fibers (not shown), and light is passed in resonant optical path 110 by Transmission Fibers
Broadcast.Specifically, each fiber optic component is welded together all -fiber transmission for realizing optical signal with Transmission Fibers respectively.Further
Ground, Transmission Fibers are single-mode fiber.For example, in the present embodiment, Transmission Fibers can use Corning SMF-28 single-mode fiber,
Length is about 60m.
In the present embodiment, optical fiber laser 100 also includes pump light source 140 and gain fibre 150, and pump light source 140 is
Resonant optical path 110 provides pump light.For example, pump light source 140 is semiconductor laser diode, wavelength 980nm.Gain fibre
150 are arranged on resonant optical path 110, and the pump light that pump light source 140 is emitted injects gain fibre 150.Contain in gain fibre 150
There is the working media of laser, in the presence of pump light, the electronics in working media is excited in higher excitation level,
Realize number of ions reversion.Particle after reversion outside ray photoelectron, forms laser to be transferred to ground state from high level.
Working media can be rare earth ion, that is to say, that gain fibre 150 is the optical fiber mixed with rare earth ion, such as thulium doped fiber,
Erbium-doped fiber etc..In the present embodiment, gain fibre 150 is erbium-doped fiber.Gain fibre 150 is to mix bait using OFS EDF80
Optical fiber, length about 1.2m.The wavelength for the laser that pump light is formed after gain fibre 150 is 1550nm.By gain fibre 150
The laser light incident of outgoing is tuned control to laser to tuning device 120 by tuning device 120.
Optical fiber laser 100 also includes the first coupling element 160, and the first coupling element 160 is arranged at resonant optical path 110
On, the first coupling element 160 receives the emergent light of tuning device 120.First coupling element 160 is used for optical signal beam splitting, real
Existing distribution of the optical signal power between different Transmission Fibers.Wherein a branch of optical signal conduct through the beam splitting of the first coupling element 160
The output laser of optical fiber laser 100 is launched to outside resonant optical path 110.In the present embodiment, the first coupling element 160 is optical fiber coupling
Clutch.First coupling element 160 includes the first exit end and the second exit end.First coupling element 160 is used to receive
Optical signal is divided into two beams, wherein a branch of optical signal is launched as output laser from first exit end, another beam optical signal leads to
The second exit end outgoing is crossed, and continues to propagate on the resonant optical path.Specifically, the light splitting of the first coupling element 160
Than for 9:1,10% optical signal is emitted as output laser from the first exit end, and 90% optical signal is brought out by the second outgoing
Penetrate.The optical signal of second exit end continues to propagate on resonant optical path 110 so that the working stability of optical fiber laser 100 export
Laser.
Optical fiber laser 100 also includes the second coupling element 170, and the second coupling element 170 is arranged at resonant optical path 110
On, the second coupling element 170 is arranged at the first coupling element 160 to the light path of gain fibre 150.That is, the second coupling
The optical signal that element 170 receives pump light and the second exit end is closed, the second coupling element 170 is used to pump light and second being emitted
Bring out the optical signal penetrated and close beam, the emergent light of the second coupling element 170 is incident to gain fibre 150.Pumping can so be realized
Light and the optical signal of the second exit end outgoing simultaneous transmission in Transmission Fibers, improve efficiency of transmission.It can also realize pump simultaneously
Pu is optically coupled in gain fibre 150.In the present embodiment, the second coupling element 170 is wavelength division multiplexer.
It should be noted that in other embodiments, the first coupling element 160 is not limited to fiber coupler, can also
It is other devices with function similar with fiber coupler.Second coupling element 170 is not limited to wavelength division multiplexer, can also
It is other devices having with wavelength division multiplexer similar functions.
Optical fiber laser 100 also includes isolation element 180, and isolation element 180 is arranged at gain fibre 150 to tuning device
In 120 light path, isolation element 180 is used for the one-way transmission for ensureing light.Specifically, pump light passes through after gain fibre 150
There may be the laser of multiple directions, isolation element 180 is set in the light path of gain fibre 150 to tuning device 120, so
Isolation element 180 can select an optical signal propagated along preset direction to be incident to tuning device 120, so as to ensure that pulse swashs
The one way propagation of light so that the better performances of optical fiber laser 100.In the present embodiment, isolation element 180 be polarization it is unrelated every
From device.
Optical fiber laser 100 also includes polarization control component 190.Polarization control component 190 be arranged at isolation element 180 to
In the light path of tuning device 120, polarization control component 190 is used for the polarization state for adjusting optical signal.Polarization control component 190 connects
The emergent light of isolation element 180 is received, and controls the polarization state of the optical signal received, so as to control the polarization shape of output laser
State, to export the polarization state meet demand of laser.In the present embodiment, polarization control component 190 can use optical fiber polarisation
Controller, so, polarization control component 190 are very easy to access all optical fiber system.
Tuning device 120 receives the emergent light of polarization control component 190, and the optical signal to receiving is tuned.By
After pump light injects gain fibre 150, laser is produced in gain fibre 150, laser transmits by Transmission Fibers, respectively
Transmitted by isolation element 180 and polarization control component 190 to the first optical fiber, therefore the optical signal that the first optical fiber receives is sharp
Light.Tuning device 120 is tuned to laser, to realize that optical fiber laser 100 exports the tunable of laser.
In above-mentioned optical fiber laser 100, the optical signal of the coupling element of pump light source 140 to the second 170, the second coupling element
170 to the optical signal of gain fibre 150, the optical signal of gain fibre 150 to isolation element 180, isolation element 180 to polarization control
The optical signal of element 190 processed, the optical signal of polarization control component 190 to tuning device 120, tuning device 120 to the first couple
The optical signal of the optical signal of element 160 and the coupling element 170 of the first coupling element 160 to the second is transmitted by Transmission Fibers.
So, optical signal loss is less, and efficiency of transmission is higher.
Fig. 2 is the structural representation of the tuning device 120 shown in Fig. 1.As shown in Fig. 2 tuning device 120 includes graphene
The optical fiber 122 of film 121 and first.First optical fiber includes fibre core 122A and the covering 122B being coated on outside fibre core.Graphene film 121
It is covered on the fibre core 122A of the one end of the first optical fiber 122 end face.In tuning device 120, tuning device 120 also includes two
Electrode, i.e. electrode 1 and electrode 2.Electrode 1 and electrode 2 are connected with graphene film 121 respectively, and graphene film 121 is connected into electricity
Throttle regulator part.Because graphene film 121 is very thin, it is not easy to power supply is directly accessed, so graphene film 121 and two electrodes point
Not Lian Jie after, just have electric current as long as electrode 1 and electrode 2 are connected on current regulator, in graphene film 121 and pass through.So
It can make it that the access power supply of graphene film 121 is easy, and power supply is stably accessed by two electrodes.
Specifically, the fibre core 122A close to the first optical fiber 122 of graphene film 121 extends to the covering of the first optical fiber 122
Outside 122B, external part is formed.Two electrodes are disposed in proximity on the covering 122B end face of external part, and two electrodes are stretched
Go out end to separate.So, two electrodes are integrated on the first optical fiber 122, and using fibre core 122A external part by two electrodes every
Open, can make it that the structure of tuning device 120 is simple and compact.
In the present embodiment, the shape of two electrodes is semicylinder, and the bottom surface of two electrodes is each parallel to graphene
Film 121.The bottom of the close graphene film 121 of two electrodes covers by the graphene film 121, so that graphite
Alkene film 121 is connected respectively with two electrodes.So, as long as graphene film 121 contacts can with two electrodes and realized and two
The connection of electrode, the connection between graphene film 121 and two electrodes are simple.
Further, two electrodes are metal electrode.The electrical conductivity of metal electrode is high.So, metal electrode is passed through
Be powered to graphene film 121, can cause it is smaller by the current loss in graphene film 121 so that tuning device 120
Tuning to optical fiber laser 100 is accurate.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of optical fiber laser, including pump light source and resonant optical path；The pump light source provides pump for the resonant optical path
Pu light；Characterized in that, the optical fiber laser also includes tuning device and current regulating device, the tuning device is arranged on
On the resonant optical path, the tuning device includes graphene film and the first optical fiber, and the graphene film covers first light
The end face of the fibre core of fine one end；The current regulating device is connected with the graphene film, and the current regulating device is used to make
The graphene film is powered, and adjusts the electric current by the graphene film.
2. optical fiber laser according to claim 1, it is characterised in that the tuning device also includes two electrodes, and two
The individual electrode is connected with the graphene film respectively, and the graphene film is connected into the current regulating device.
3. optical fiber laser according to claim 2, it is characterised in that first optical fiber is also coated on the fibre
Covering outside core；The fibre core close to the graphene film is extended to outside the covering, forms external part；Described in two
Electrode is disposed in proximity on the end face of the covering of the external part, and two electrodes are separated by the external part.
4. optical fiber laser according to claim 3, it is characterised in that the shape of two electrodes is semicolumn
Body, the bottom surface of two electrodes is each parallel to the graphene film；The bottom of the close graphene film of two electrodes
Portion covers by the graphene film.
5. optical fiber laser according to claim 4, it is characterised in that two electrodes are metal electrode.
6. optical fiber laser according to claim 1, it is characterised in that also including gain fibre and the first coupling element,
The gain fibre is arranged on the resonant optical path, and pump light is incident to the gain fibre, and the gain fibre is in pumping
Laser is produced in the presence of light, by the laser light incident that the gain fibre is emitted to the tuning device；The first coupling member
Part is arranged on the resonant optical path, and first coupling element receives the emergent light of the tuning device, first coupling
Element is used for the optical signal beam splitting that will receive, wherein a branch of optical signal as the optical fiber laser output laser to described
Launch outside resonant optical path.
7. optical fiber laser according to claim 6, it is characterised in that first coupling element includes the first exit end
With the second exit end, first coupling element is used to optical signal being divided into two beams, wherein a branch of optical signal is as output laser
Launch from first exit end, another beam optical signal is emitted by second exit end, and is continued in the resonant optical path
Upper propagation；The optical fiber laser also includes the second coupling element, and second coupling element is arranged on the resonant optical path,
Second coupling element receives the optical signal of pump light and second exit end, and second coupling element is used for pumping
Light and the optical signal of second exit end outgoing close beam, and the emergent light of second coupling element is incident to the gain light
It is fine.
8. optical fiber laser according to claim 7, it is characterised in that the splitting ratio of first coupling element is 9:1,
10% optical signal is launched as output laser from first exit end, and 90% optical signal is brought out by the described second outgoing
Penetrate.
9. optical fiber laser according to claim 6, it is characterised in that also set including isolation element, the isolation element
The gain fibre is placed in the light path of the tuning device, the isolation element is used for the one-way transmission for ensureing light.
10. optical fiber laser according to claim 9, it is characterised in that also including polarization control component, the polarization control
Element processed is arranged at the isolation element to the light path of the tuning device, and the polarization control component is used to adjust optical signal
Polarization state.
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| CN201710792850.3A CN107482429B (en) | 2017-09-05 | 2017-09-05 | Optical fiber laser |
| PCT/CN2018/080932 WO2019047507A1 (en) | 2017-09-05 | 2018-03-28 | Optical fiber laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710792850.3A CN107482429B (en) | 2017-09-05 | 2017-09-05 | Optical fiber laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047507A1 (en) * | 2017-09-05 | 2019-03-14 | 深圳市太赫兹科技创新研究院有限公司 | Optical fiber laser |
| CN109586154A (en) * | 2019-01-08 | 2019-04-05 | 南京大学 | Pulse condition tunable laser based on three-dimensional dirac semimetal saturable absorber |
| CN115051231A (en) * | 2022-07-08 | 2022-09-13 | 广东大湾区空天信息研究院 | Tunable single-frequency fiber laser based on PMN-PT film |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047507A1 (en) * | 2017-09-05 | 2019-03-14 | 深圳市太赫兹科技创新研究院有限公司 | Optical fiber laser |
| CN109586154A (en) * | 2019-01-08 | 2019-04-05 | 南京大学 | Pulse condition tunable laser based on three-dimensional dirac semimetal saturable absorber |
| CN109586154B (en) * | 2019-01-08 | 2020-10-30 | 南京大学 | Pulse state tunable laser based on three-dimensional Dirac semi-metal saturable absorber |
| CN115051231A (en) * | 2022-07-08 | 2022-09-13 | 广东大湾区空天信息研究院 | Tunable single-frequency fiber laser based on PMN-PT film |
| CN115051231B (en) * | 2022-07-08 | 2024-01-30 | 广东大湾区空天信息研究院 | Tunable single-frequency fiber laser based on PMN-PT film |
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| CN107482429B (en) | 2020-03-06 |
| WO2019047507A1 (en) | 2019-03-14 |
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