CN106207722B - Dissipative solitons and orphan's dual laser based on dispersion compensating fiber - Google Patents
Dissipative solitons and orphan's dual laser based on dispersion compensating fiber Download PDFInfo
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- CN106207722B CN106207722B CN201610724855.8A CN201610724855A CN106207722B CN 106207722 B CN106207722 B CN 106207722B CN 201610724855 A CN201610724855 A CN 201610724855A CN 106207722 B CN106207722 B CN 106207722B
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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
- H01S3/06725—Fibre characterized by a specific dispersion, e.g. for pulse shaping in soliton lasers or for dispersion compensating [DCF]
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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
- H01S3/06791—Fibre ring lasers
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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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser
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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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
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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
- H01S3/10—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
Abstract
The invention discloses a kind of dissipative solitons based on dispersion compensating fiber and orphan's dual lasers, it further include dispersion compensating fiber, the polarizer, the first Polarization Controller and the second Polarization Controller including laser diode, bundling device, gain fibre, coupling elements, the unrelated isolator of polarization, polarization maintaining optical fibre, carbon nanotube；Bundling device, gain fibre, coupling elements, the unrelated isolator of polarization, dispersion compensating fiber, polarization maintaining optical fibre, carbon nanotube, the first Polarization Controller, the polarizer and second Polarization Controller are linked in sequence by optical fiber constitutes full optical fiber ring-type chamber, and laser diode and bundling device are connected to the pump light source of laser.The present invention can be realized 2 mu m waveband tradition orphans and the output of dissipative solitons dual-wavelength laser, and structure is simpler, and cost is lower, can simply, easily realize that twin wavelength laser output mode is converted.
Description
Technical field
The present invention relates to a kind of dual lasers, belong to optical fiber laser field, more particularly to a kind of base
In the dissipative solitons and orphan's dual laser of dispersion compensating fiber.
Background technique
Ultra-short pulse laser is in fiber optic communication, biotechnology, medical treatment, laser spectroscopy, superfinishing fining-off, time resolution light
The fields such as spectroscopy have a wide range of applications.Mode-locking technique is to obtain a kind of common method of ultrashort light pulse.Therefore, output is flown
The research of the mode locked fiber laser of pulse per second (PPS) becomes a hot spot of laser technology field research in recent years.In general, root
According to the difference of mode locking mode, mode locked fiber laser can be divided into two major classes: one kind is Active Mode-locked Fiber Laser, chamber
Inside must be inserted into microwave signal driving intensity modulator or phase-modulator, provide amplitude modulation necessary to active mode locking or
Phase-modulation.Another kind of is passive mode-locking fiber laser, this kind of optical fiber laser using all optical fiber cavity structure, it is intracavitary
In addition to gain media, modulator and other active devices are not needed.Passive mode-locking fiber laser has obtained fast in recent years
Hail exhibition, picosecond and femtosecond magnitude light source in terms of have a wide range of applications.
Passive mode-locking is a very important approach for obtaining ultrashort pulse, its basic principle is using intracavitary non-thread
The light transmission rate of property device is to the dependence of input pulse light intensity, so that pulse is constantly narrowed in cavity circulation.It compares
In active mode locking, the structure of passive mode-locking fiber laser is simple, compact, can export the ultrashort pulse of femtosecond magnitude, be not required to
Want additional modulation device that mode locking can be thus achieved, and mode locking pulse pulsewidth is narrower, pulse energy is higher, is current acquisition light
The ideal platform of soliton pulse.In addition, the soliton pulse of passive mode-locking fiber laser output has some unique features, than
Such as phenomena such as spectral sidebands, pumping sluggishness, the output of pulse energy quantization, multiple-pulse and passive harmonic mode locking.Currently, using true
The mode-locking technique of real saturable absorber and based on nonlinear optical annular mirror (NOLM), nonlinear amplified loop mirror (NALM) and
The artificial saturable absorber mode locking of nonlinear polarization rotation (Nonlinear polarization rotation, NPR)
Technology is most common two ways in passive mode-locking fiber laser.
In optical fiber laser, laser pulse is different in the Forming Mechanism of different dispersion areas.It is anti-in intracavitary net dispersion
In the optical fiber laser of normal dispersion, the interaction between the nonlinear effect and Semi―classical theory of optical fiber will generate traditional
Soliton pulse.And when the intracavitary net dispersion of optical fiber laser is timing, normal dispersion effect and nonlinear effect, interacvity gain and damage
The comprehensive function of consumption can produce dissipative solitons pulse.Dissipative solitons have biggish in high energy pulse and high power laser light technology
Application value, the single pulse energies of dissipative solitons up to traditional orphan even hundreds times of decades of times and save pulse and do not divide,
It is one of the developing direction of high power pulsed laser.Particularly, the double wave of traditional orphan and dissipative solitons can be generated simultaneously
Long optical fibers laser has biggish Practical significance, it can generating traditional soliton pulse can also generate with higher-energy
Dissipative solitons pulse.Dissipative solitons also have very high learning value in mechanism of laser research.In order to establish dissipative solitons pulse
The net dispersion in rare-earth doped optical fibre or Chirp Bragg grating control management laser cavity can be used in the environment of generation.However this
A little management methods have disadvantage, and longer fiber resonance cavity will limit the raising of repetition rate, and Chirp Bragg grating will lead to
The increase of laser cavity loss.The method of dissipative solitons and orphan's dual wavelength mode locked fiber laser is built at present mainly in chamber
One section of chirped fiber grating of interior insertion, the effect of Chirp Bragg grating is to provide normal dispersion to be intracavitary, net in counter balance pocket
Dispersion values make the net dispersion at 1550nm and 1562nm be respectively anomalous dispersion and normal dispersion, so that at two wavelength
Pulse show the features of traditional orphan and dissipative solitons respectively, realize that 1550nm tradition orphan and 1562nm dissipative solitons are double
Wavelength output.This programme proposes a kind of based on dispersion compensating fiber 2 mu m waveband dissipative solitons of realization and traditional orphan's dual wavelength
The mode-locked laser device of output.Dissipative solitons and the wavelength of traditional orphan are respectively 1952nm and 1980nm, dissipative solitons
Pulse width is 0.64ps, and spectral width 8nm, the pulse width of traditional orphan is 0.89ps, spectral width 6nm.And
In the present solution, double tradition orphans, traditional three kinds of states of orphan/dissipative solitons and double dissipative solitons convenient can convert.
It is the dress of a kind of 1.5 based on Chirp Bragg grating μm dissipative solitons and orphan's dual laser shown in Fig. 1
Set figure.It include that the Er-doped fiber, two Polarization Controllers, four port circulators, two semiconductors of one section of 18m long can satisfy
With the Chirp Bragg grating of absorbing mirror and a 1nm@1550nm bandwidth.Laser system utilizes two pole of laser of a 980nm
Pumping source and laser resonator end are coupled into resonant cavity as pumping source, and using a wave division multiplex coupler by pipe together
Head end.It after laser passes through wavelength division multiplexer, is amplified into Er-doped fiber, enters back into coupler, and by coupler
20% port is as laser output mouth.A Polarization Controller is accessed behind coupler controls laser polarization state, Zhi Houshi
One four port circulator.There are two effects for four port circulators, first is that laser reverse transfer is prevented as isolator, second is that making
Semiconductor saturable absorbing mirror, fiber resonance cavity and Chirp Bragg grating are connected for interface unit.Chirp Bragg grating it
After be connected with another Polarization Controller and saturable absorber device.Other parts in device figure are standard single-mode fiber
As laser transmission channel.The dispersion of Er-doped fiber and single mode optical fiber is respectively -16 and 17ps/nm/km.Chirped fiber grating
Dispersion is 1.7ps/nm/km.The modulation depth of semiconductor saturable absorber SESAM1 and SESAM2 are respectively 30% and 9%,
Recovery time is 2ps.Laser can be existed in the intracavitary optical path for having two different lengths and dispersion by adjusting Polarization Controller simultaneously
1550nm tradition orphan and 1562nm dissipative solitons are generated in laser.Generated tradition soliton spectrum width is 0.28nm,
Pulse width is 15.1ps, and the spectral width of dissipative solitons is 9.5nm, pulse width 0.55ps.
It can be seen that it has the disadvantage in that from the device figure
1, structure is complicated for the technical solution, is connected to a Chirp Bragg grating and two and half using four port circulators
Conductor saturable absorber.Also more check is difficult to tune for traditional orphan and dissipative solitons forming process；
2, the technical solution has used two semiconductor saturable absorber devices, and the four port circulators and Zhou used
Bragg grating sing costly, so laser higher cost；
3, for the technical solution using Chirp Bragg grating as Dispersion managed device, loss is higher, limits laser
The promotion of device power；
4, it can not achieve and turn between three kinds of double traditional orphans, traditional orphan/dissipative solitons and double dissipative solitons output modes
It changes.
Summary of the invention
The present invention is to solve technical problem present in background technique, provide a kind of brand new based on dispersion compensation light
Fine dissipative solitons and orphan's dual laser, which can generate 2 mu m waveband dissipative solitons and orphan is double
Wavelength output, and there is three kinds of dissipative solitons/tradition orphan, double dissipative solitons and double traditional orphans twin wavelength laser output modes, from
And solving previous laser can not ask in the single technology of 2 mu m wavebands output dissipative solitons and orphan's dual wavelength and output mode
Topic.
In order to solve the above technical problems, the invention adopts the following technical scheme:
Dissipative solitons and orphan's dual laser based on dispersion compensating fiber, including laser diode, bundling device, increasing
Beneficial optical fiber, coupling elements, the unrelated isolator of polarization, polarization maintaining optical fibre, carbon nanotube, further include dispersion compensating fiber, are polarized
Device, the first Polarization Controller and the second Polarization Controller；The bundling device, gain fibre, coupling elements, polarization it is unrelated every
From device, dispersion compensating fiber, polarization maintaining optical fibre, carbon nanotube, the first Polarization Controller, the polarizer and second Polarization Controller
It is linked in sequence by optical fiber and constitutes full optical fiber ring-type chamber, the laser diode and bundling device are connected to the pump light of laser
2 mu m waveband dissipative solitons and traditional orphan's dual wavelength are realized in source, the adjusting by the dispersion compensating fiber to intracavitary net dispersion
Laser output.
Preferably, the polarization maintaining optical fibre uses panda type or butterfly structure optical fiber, the polarization maintaining optical fibre, the first polarization control
Device, the polarizer and second Polarization Controller processed collectively form filter module.
Preferably, the polarization maintaining optical fibre uses micro-nano fiber, Sagnac filter, lyot filter and cascaded optical fiber chirp
Grating.
Preferably, the carbon nanotube is as saturable absorber and the filter module with the use of generation double wave long pulse
Impulse light.
Preferably, the carbon nanotube uses graphene, black phosphorus, topological insulator and other saturable absorption material systems
At.
Preferably, the dispersion compensating fiber plays the role of net dispersion in adjusting cavity, by optimizing dispersion compensating fiber
Length may make the intracavitary net dispersion value of full optical fiber ring-type to be essentially 0 in the certain wave strong point of 2 mu m wavebands, be dissipative solitons and tradition
The generation of orphan's dual-wavelength laser constructs appropraite condition.
Preferably, the coupling elements be polarization beam apparatus, both ends respectively with the gain fibre and polarize nothing
Isolator is closed to be connected；The coupling elements and bundling device are used in conjunction with the ring shape resonator for constituting optical fiber laser.
Preferably, the middle cardiac wave of intracavitary dual-wavelength laser can be changed in first Polarization Controller and the second Polarization Controller
It is long, it can be converted between three kinds of dissipative solitons/tradition orphan, double dissipative solitons and double traditional orphans dual-wavelength laser output modes.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention can be realized 2 mu m waveband tradition orphans and the output of dissipative solitons dual-wavelength laser, not need four ports
Circulator and Chirp Bragg grating, structure is simpler, and cost is lower, and improves energy conversion efficiency.
2, the repetition rate of double-wavelength pulse is more consistent in the present invention.
3, the present invention in dual wavelength be it is tunable, by adjust may be implemented dissipative solitons/tradition orphan, double dissipation orphan
Three kinds of twin wavelength laser output modes of son and double traditional orphans, to simply, easily realize the conversion of twin wavelength laser output mode.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is shown in background of invention, 1.5 based on chirped fiber grating μm dissipative solitons and orphan's dual wavelength
The structural schematic diagram of the device figure of laser；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is dissipative solitons and traditional orphan's twin wavelength laser output spectrogram；
Label in figure respectively indicates are as follows: 1, laser diode；2, bundling device；3, gain fibre；4, coupling elements；
5, output optical fibre；6, unrelated isolator is polarized；7, dispersion compensating fiber；8, polarization maintaining optical fibre；9, carbon nanotube；10, the first polarization
Controller；11, the polarizer；12, the second Polarization Controller.
Specific embodiment
The present invention will be further described below with reference to the drawings.Embodiments of the present invention include but is not limited to following reality
Apply example.
As shown in Figure 2 and Figure 3, the dissipative solitons based on dispersion compensating fiber and orphan's dual laser, including laser two
Pole pipe 1, bundling device 2, gain fibre 3, coupling elements 4, the unrelated isolator 6 of polarization, polarization maintaining optical fibre 8, carbon nanotube 9, also
Including dispersion compensating fiber 7, the polarizer 11, the first Polarization Controller 10 and the second Polarization Controller 12；The bundling device 2 increases
Beneficial optical fiber 3, coupling elements 4, the unrelated isolator 6 of polarization, dispersion compensating fiber 7, polarization maintaining optical fibre 8, carbon nanotube 9, first
Polarization Controller 10, the polarizer 11 and second Polarization Controller 12 are linked in sequence by optical fiber and constitute full optical fiber ring-type chamber, institute
It states laser diode 1 and bundling device 2 is connected to the pump light source of laser, by the dispersion compensating fiber to intracavitary solid color
2 mu m waveband dissipative solitons and traditional orphan's dual-wavelength laser output are realized in scattered adjusting.
The polarization maintaining optical fibre 8 uses panda type or butterfly structure optical fiber, the polarization maintaining optical fibre 8, the first Polarization Controller
10, the polarizer 11 and second Polarization Controller 12 collectively form filter module.
The polarization maintaining optical fibre 8 is using micro-nano fiber, Sagnac filter, lyot filter and cascaded optical fiber chirp grating.
The carbon nanotube 9 swashs as saturable absorber and the filter module with the use of double-wavelength pulse is generated
Light.
The carbon nanotube 9 is made of graphene, black phosphorus, topological insulator and other saturable absorption materials.
The dispersion compensating fiber 7 plays the role of net dispersion in adjusting cavity, can by optimization 7 length of dispersion compensating fiber
So that the intracavitary net dispersion value of full optical fiber ring-type is essentially 0 in the certain wave strong point of 2 mu m wavebands, it is that dissipative solitons and traditional orphan are double
The generation of wavelength laser constructs appropraite condition.
The coupling elements 4 are polarization beam apparatus, both ends isolation unrelated with the gain fibre 3 and polarization respectively
Device 6 is connected；The coupling elements 4 are used in conjunction with the ring shape resonator for constituting optical fiber laser with bundling device 2.
The central wavelength of intracavitary dual-wavelength laser can be changed in first Polarization Controller 10 and the second Polarization Controller 12,
It can be converted between three kinds of dissipative solitons/tradition orphan, double dissipative solitons and double traditional orphans dual-wavelength laser output modes.
The present embodiment laser diode 1 uses 793nm laser diode, and the pump light that 793nm laser diode generates is logical
It crosses bundling device 2 and enters the gain fibre 3 that length is 7m, gain fibre 3 can be generated after absorbing 793nm pump light by energy level transition
2 μm of laser of generation are divided into two parts by the laser of 2 mu m wavebands, coupling elements 4, and a part passes through 5 conduct of output optical fibre
Laser is exported, another part transmits in laser cavity by polarizing the unrelated continuation of isolator 6, and 2 μm of laser pass sequentially through length and are
The dispersion compensating fiber 7 of 10m, the polarization maintaining optical fibre 8 and carbon nanotube 9 that length is 0.6m, are acted on by carbon nanotube 9 and form lock
Mould pulse carries out Polarization Control finally by the first Polarization Controller 10, the polarizer 11 and the second Polarization Controller 12, generates inclined
The controllable polarization laser of polarization state.
The effect of bundling device 2 is the pump light for generating laser diode 1 and the laser coupled in intracavitary transmission after a week
Into in gain fibre 3, (2+1) × 1 bundling device is can be used in bundling device 2；The effect of gain fibre 3 is to generate 2 mu m waveband lasers to mention
For level structure, which can be thulium doped fiber；The effect for polarizing unrelated isolator 6 is to prevent laser reverse transfer；
The effect of dispersion compensating fiber 7 is to provide suitable normal dispersion to balance the intracavitary net dispersion of full optical fiber ring-type chamber, by optimizing color
Dissipating 7 length of compensated optical fiber may make the intracavitary net dispersion value of full optical fiber ring-type to be essentially 0 in the certain wave strong point of 2 mu m wavebands, for consumption
The generation for dissipating orphan and traditional orphan's dual-wavelength laser constructs appropraite condition；The effect of polarization maintaining optical fibre 8 is to maintain the inclined of endovenous laser
Polarization state characteristic, polarization maintaining optical fibre 8 is preferably selected panda type or butterfly structure optical fiber, but also can choose micro-nano fiber, Sagnac
Filter, lyot filter, cascaded optical fiber chirp grating etc. are filtered as filtering device；Carbon nanotube 9 functions as
Saturable absorber is modulated to laser pulse and shaping, generate mode locking pulse, nanotube 9 can also be used graphene, black phosphorus,
Topological insulator and other saturable absorption materials are made and are substituted；First Polarization Controller 10, the polarizer 11 and second are partially
Then collective effect generates the controllable polarization laser of polarization state and collectively forms filter with polarization maintaining optical fibre 8 vibration 12 3 devices of controller
Wave module generates dual-wavelength laser, reaches tuning dual-wavelength laser by adjusting the Polarization Controller change filtering characteristic
Purpose, carbon nanotube 9 is as saturable absorber and the filter module with the use of generation double-wavelength pulse laser.
Coupling elements 4 are polarization beam apparatus, both ends isolation unrelated with the gain fibre 3 and the polarization respectively
Device 6 is connected；The coupling elements 4 are used in conjunction with the ring shape resonator for constituting optical fiber laser with the bundling device 2.
The present embodiment designs through the above structure, can be realized 2 mu m waveband tradition orphans and dissipative solitons dual-wavelength laser
Output, does not need traditional four port circulators and Chirp Bragg grating, structure is simpler, and cost is lower, and improves energy
Transfer efficiency is measured, and the repetition rate of double-wavelength pulse is more consistent.
The present embodiment designs through the above structure, so as to adjust the dual wavelength of output, is controlled by adjusting the first polarization
Dissipative solitons/tradition orphan, double dissipative solitons and double traditional three kinds of orphans may be implemented in device 10 processed and the second Polarization Controller 12
Twin wavelength laser output mode, to simply, easily realize the conversion of twin wavelength laser output mode.
It is illustrated in figure 3 dissipative solitons and traditional orphan's twin wavelength laser output spectrogram；Pump light source 1 uses 793nm laser
When diode, claim at this time since there are dispersion compensating fibers 7 so that net dispersion value of the intracavitary net dispersion at 1965nm is 0
1965nm is zero-dispersion wavelength.The first Polarization Controller 10 and the second Polarization Controller 12 are adjusted, intracavitary double-wavelength pulse changes
Become, when in double-wavelength pulse shortwave pulse and long wave impulse be respectively at zero-dispersion wavelength both ends when, shortwave pulse be in just
Normal dispersion area, long wave impulse is in the anomalous dispersion region, so showing 1952nm dissipative solitons and 1980nm tradition orphan respectively
State, Cong Tuzhong can also show that the pulse width of dissipative solitons is 0.64ps, spectral width 8nm；The pulse of traditional orphan is wide
Degree is 0.89ps, spectral width 6nm.
When by adjusting the first Polarization Controller 10 and the second Polarization Controller 12, intracavitary double-wavelength pulse also may make
Shorter than zero-dispersion wavelength or it is longer than zero-dispersion wavelength simultaneously simultaneously.When double-wavelength pulse shorter than zero-dispersion wavelength simultaneously, two
Wavelength will generate double dissipative solitons outputs all in normal dispersion region；When double-wavelength pulse is longer than zero-dispersion wavelength simultaneously, two
A wavelength will generate double traditional orphan's outputs, to can easily turn by adjusting Polarization Controller all in the anomalous dispersion region
Change dual-wavelength laser output mode.
It is as described above the embodiment of the present invention.Design parameter in the embodiment and embodiment is merely to clear
The invention verification process of inventor, the scope of patent protection being not intended to limit the invention, patent protection of the invention are stated by Chu
Range is still subject to the claims, all to become with equivalent structure made by specification and accompanying drawing content of the invention
Change, similarly should be included within the scope of the present invention.
Claims (8)
1. dissipative solitons and orphan's dual laser based on dispersion compensating fiber, it is characterised in that: including laser diode
(1), bundling device (2), gain fibre (3), coupling elements (4), the unrelated isolator (6) of polarization, polarization maintaining optical fibre (8), carbon are received
Mitron (9), which is characterized in that further include dispersion compensating fiber (7), the polarizer (11), the first Polarization Controller (10) and second
Polarization Controller (12)；The bundling device (2), gain fibre (3), coupling elements (4), the unrelated isolator (6) of polarization, color
Dissipate compensated optical fiber (7), polarization maintaining optical fibre (8), carbon nanotube (9), the first Polarization Controller (10), the polarizer (11) and described second
Polarization Controller (12) is linked in sequence by optical fiber and constitutes full optical fiber ring-type chamber, and the laser diode (1) connect with bundling device (2)
As the pump light source of laser, it is lonely to realize that 2 mu m wavebands dissipate for adjusting by the dispersion compensating fiber to intracavitary net dispersion
Son and traditional orphan's dual-wavelength laser output.
2. the dissipative solitons and orphan's dual laser according to claim 1 based on dispersion compensating fiber, feature
Be: the polarization maintaining optical fibre (8) uses panda type or butterfly structure optical fiber, the polarization maintaining optical fibre (8), the first Polarization Controller
(10), the polarizer (11) and second Polarization Controller (12) collectively form filter module.
3. the dissipative solitons and orphan's dual laser according to claim 1 based on dispersion compensating fiber, feature
Be: the polarization maintaining optical fibre (8) is using in micro-nano fiber, Sagnac filter, lyot filter and cascaded optical fiber chirp grating
Any one.
4. the dissipative solitons and orphan's dual laser according to claim 2 based on dispersion compensating fiber, feature
Be: the carbon nanotube (9) is as saturable absorber and the filter module with the use of generation double-wavelength pulse laser.
5. the dissipative solitons and orphan's dual laser according to claim 4 based on dispersion compensating fiber, feature
Be: the carbon nanotube (9) is made of graphene, black phosphorus, topological insulator and other saturable absorption materials.
6. the dissipative solitons and orphan's dual laser according to claim 1 based on dispersion compensating fiber, feature
Be: the dispersion compensating fiber (7) plays the role of net dispersion in adjusting cavity, by optimizing dispersion compensating fiber (7) length
It may make the intracavitary net dispersion value of full optical fiber ring-type to be essentially 0 in the certain wave strong point of 2 mu m wavebands, be dissipative solitons and traditional orphan
The generation of dual-wavelength laser constructs appropraite condition.
7. the dissipative solitons and orphan's dual laser according to claim 1 based on dispersion compensating fiber, feature
Be: the coupling elements (4) be polarization beam apparatus, both ends respectively it is unrelated with the gain fibre (3) and polarization every
It is connected from device (6)；The coupling elements (4) and bundling device (2) are used in conjunction with the ring shape resonator for constituting optical fiber laser.
8. the dissipative solitons and orphan's dual laser according to claim 1 based on dispersion compensating fiber, feature
Be: the middle cardiac wave of intracavitary dual-wavelength laser can be changed in first Polarization Controller (10) and the second Polarization Controller (12)
It is long, it can be converted between three kinds of dissipative solitons/tradition orphan, double dissipative solitons and double traditional orphans dual-wavelength laser output modes.
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| CN107069410B (en) * | 2017-03-28 | 2019-02-15 | 电子科技大学 | A kind of multipurpose bidirectional passive mode-locking full optical fiber laser system |
| CN107069398B (en) * | 2017-04-07 | 2019-02-22 | 长春理工大学 | Dipulse square wave optical fiber laser |
| CN107039876A (en) * | 2017-06-26 | 2017-08-11 | 电子科技大学 | The dual wavelength thulium-doped fiber laser that noise like and high-frequency harmonic locked mode coexist |
| CN107359497B (en) * | 2017-07-07 | 2020-09-08 | 清华大学 | Method for dispersion management and chirp compensation based on micro-nano optical fiber |
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| CN203631965U (en) * | 2013-12-16 | 2014-06-04 | 北京工业大学 | Double-wavelength all-fiber dissipative soliton mode-locked laser |
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