CN100437170C - Self organizing coherent optic fiber wave guide and its producing method - Google Patents
Self organizing coherent optic fiber wave guide and its producing method Download PDFInfo
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- CN100437170C CN100437170C CNB2007100000302A CN200710000030A CN100437170C CN 100437170 C CN100437170 C CN 100437170C CN B2007100000302 A CNB2007100000302 A CN B2007100000302A CN 200710000030 A CN200710000030 A CN 200710000030A CN 100437170 C CN100437170 C CN 100437170C
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
- C03B37/01222—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of multiple core optical fibres
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
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- C03B37/01823—Plasma deposition burners or heating means
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- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
- C03B2201/34—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with rare earth metals, i.e. with Sc, Y or lanthanides, e.g. for laser-amplifiers
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- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
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- C03B2203/34—Plural core other than bundles, e.g. double core
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Abstract
Using plasma chemical vapor deposition (PCVD) and modified chemical vapor deposition (MCVD) technique, the method produces rare earth doped optical fiber core rod. Seven or nineteen pieces of rare earth doped optical fiber core rod arranged in dot matrix in hexagon are placed into sleeve so as to form preformrod of multi core rare earth doped optical fiber. Then, the preformrod is drawn into selforganizing coherent fiber optic waveguide in certain size. When laser is pumped and coupled to the multi core active optical fiber, under action of pumped light, rare earth active ions in the multi core generate upward conversion so as to excite laser with same frequency and consistent phase. Or coherent carried out spontaneously outputs optical fiber laser with high coherence. The invention realizes synchronous generation of laser and coherent of laser. Features are: selforganizing coherent, low requirement on parts of laser system, high practicability, and convenient for application.
Description
Technical field
The present invention relates to optical communication field, relate in particular to a kind of fibre-optic waveguide and the manufacture method thereof that can carry out the laser self-organized coherence.
Background technology
Fiber laser is to make gain medium or go up the laser instrument of transfer medium with optical fiber, 1964 in the world first generation amorphous laser be exactly initial neodymium glass fiber laser.The fiber core that the starting stage of fiber laser development uses is very thin, and initial pumping source is difficult to focus on fiber core, and technology limitation causes well not developed in the fiber laser more than two decades afterwards.After the eighties, along with various energy photoelectron technology progress such as diode-end-pumped technology and laser coupled technology, and the development of big core diameter double-cladding active optical fiber and high laser energy optical fiber, fiber laser has obtained unprecedented development: mix ytterbium, er-doped, erbium and ytterbium codoping, mix thulium, the various fiber laser developments in an all-round way of neodymium-doped; The core diameter of Active Optical Fiber develops into more than 50 microns from several microns, even develops to the direction of hundred microns core diameters; The multimode pump technology to the side pump, develops into many pumps from single pump from the technical development of end pump; The power of fiber laser develops into multikilowatt from initial 5W.At present, the simple optical fiber of ytterbium-doping optical fiber laser output continuous laser power has reached 2.2kW, adopts the simple optical fiber output continuous laser power of the ytterbium-doping optical fiber laser of Yb-doped photon crystal optical fiber manufacturing to reach 1.53kW.
Rapid expansion and technical progress along with the optical-fiber laser application, in a lot of fields, material processing field such as cut and laser bonding for example, laser weapon such as laser radar and laser guidance, and all have higher requirement to the laser power and the beam quality of fiber laser in fields such as spatial light communication, remote sensing and photoelectronic warfare.Therefore, how multi beam higher-wattage laser is combined the research topic that the more high-power high-capacity optical fiber laser of output has become a reality efficiently.By the optical-fiber laser combination with many hectowatt grades, American I PG company has produced the 50kW ytterbium-doping optical fiber laser, can weld the thick steel plate of 38.1mm.The beam combination technology of laser comprises the fine beam combination of stimulated Brillouin scattering light, utilizes beam combination technology such as diffraction optical element laser beam combination and full optical fiber beam combination.But, conventional optical fiber laser group beam technology is just simply merged into a branch of by some optical elements each output of restrainting each optical-fiber laser, owing to there is not the relation on the phase place between each optical-fiber laser, be incoherent, this beam combination technology can make total laser power improve, but beam quality variation with respect to simple optical fiber laser is a lot.
For when improving laser power, keep the good beam quality of optical-fiber laser, the coherent beam combination technology of high power optical fibre laser has been proposed.2002, under the support of U.S. Department of Defense and USAF, University of New Mexico Air Force experiment chamber and Massachusetts science and engineering (MIT) university Lincoln laboratory adopt the wavelength beam combination technology under king oscillator power amplification laser system (MOPA:Main OscillatorPowerAmplify) structure in parallel to carry out the laser beam beam combination experiment of five ytterbium-doping optical fiber lasers.U.S.'s Northrop Grumman (Northrop Grumman predecessor is the Science andTechnology Center of Westinghouse Electric) aeronautical technology research institute has set up a relevant synthetic and bundle experimental provision that seven optical-fiber lasers are formed, and realized the accurate phase modulation and the relevant coupling output of four optical-fiber lasers under miniwatt, further improved the power of single fiber laser and the coherent beam combination work well afoot of whole seven optical-fiber lasers.
The relevant synthetic MOPA power amplification laser system in parallel that adopts usually, this synthetic method is because the output in parallel of each amplifier has reduced the requirement to device, by a laser king oscillator excitation, but must make the equivalent optical path of amplifier light paths at different levels, each amplifier has good consistance coupling.The major defect of this system: the laser king oscillator is divided beams how, light path design, processing, debugs all more complicated.For the same optical axis output that guarantees to use, the light beam polymerization after need amplifying has brought to requirement on devices high technical matterss such as the design of light path, processing, debugging complexity equally to each.
The peak value stack of multiple beam pulse laser is synthetic to be another synthetic method of laser coherence, promptly pass through synchronous control technique with many middle high power lasers, reach many unanimities on the middle high power laser emission laser time domain, and direction of passage synthetic technology, on target, form the output of high power laser, blinding or damage enemy armament systems photoelectric sensor.The multi-beam laser synchronous control system mainly is to use the high precision synchronous controller, the bright dipping simultaneously of control multi-station laser, guarantee the unanimity of each laser pulse on time domain that each laser instrument sends, on target, reach the peak value stack, realize high-peak power output.This method is very high to the synchronism requirement of controller, is difficult in practice realize that system stability and laser coherence are poor.
Full optical fiber beam combination synthetic technology, a lot of identical optical fiber are adjacent to each other, line up fine and close array, at the shared chamber sheet of its output terminal as laser output mirror.Because the coupling of each optical-fiber laser diffraction obtains the output of high energy coherent laser.The all-fiber coherent beam combination technology of single mode fiber laser has been studied by Brown Univ USA.To the laser coupling that is concerned with, this principle can be applied in the beam combination of a large amount of optical-fiber lasers easily by 2 * 2 single-mode fiber pyrometric cone coupling mechanisms of Active Optical Fiber preparation in utilization.The basic mode of input port enters the basic mode of coupled zone through adiabatic transmission.If the xsect of coupled zone is prepared into radial symmetry, two basic modes of coupling mechanism input end will have identical space distribution at the center, coupled zone.If the center, coupled zone separates, coupling mechanism can be used as the common sparing of several fiber laser cavities, can use a mirror that all fiber lasers are shared at separate section.In experiment, half that utilize single-mode fiber pyrometric cone coupling mechanism is as outgoing mirror---the beam combiner of two optical-fiber lasers.Not only can on same spatial model, make up the output of two bundle laser, by regulating in two fiber lasers one Bragg grating mirror, also can be observed and make two bundle laser coupled outputs and single laser have injection locking phenomenon with live width, this phenomenon can be used for keeping the spectrum brightness of laser beam combination.This method is because the stability of coupling mechanism and output cavity mirror, and multi-station laser phase place and frequency is inconsistent, and very difficult acquisition coherent laser is preferably exported.
As seen, realize that in the coherent beam combination technology of optical-fiber laser, MOPA scheme light path consistance must be identical, technical difficulty is the highest; External cavity mirror is modulated phase-locked scheme and need be required very high to the phase-locked chamber of multiple beam mirror to many lasing light emitter matching Design; Multifiber fused biconical taper coupling mechanism beam combination technology need enter the stric consistency that many lasing light emitters before the coupling mechanism must possess phase place equally can realize partial coherence output, is not truly relevant.
In order to realize the coherent beam combination of optical-fiber laser, each state has all applied for different patents: U.S. Pat 5033060 the array laser output terminal install one group of diffraction dull and stereotyped with correction element mutually, utilize Fresnel (Fresnel) diffraction of light to realize being complementary of different light beams, thereby reach the coherent beam combination of laser.US6385228 has invented a kind of coherent light beam bundling device of superpower laser, and this invention adopts the method that strengthens Brillouin Brillouin four-wave mixing to realize being complementary and locking mutually of multiple laser, thereby realizes coherent beam combination.Also there is employing to be expanded in the core mode field method that multifiber carries out fused biconical taper, reach the Mode Coupling of transmission signals, as U.S. Pat 6078716 and Chinese patent 94101047.3, but these technical schemes all are simply lightwave signal to be coupled.Chinese patent 00800579.6 discloses a kind of thermally expanded multiple core optical fiber, and non-etched multifiber covering is merged, and is formed on the multicore of closely placing in the public covering with expansion mode field, does not have the signal coupling between the core.Its objective is that the tight placement with multicore of expansion mode field makes the light wave of propagating from a core to other core arrange tightr.Chinese patent 200610023417.5 (laser coherence synthesizer) discloses a kind of optical fiber laser group beam laser, comprise many doubly clad optical fibers, one end of every doubly clad optical fiber connects a pump laser, after the other end of described many doubly clad optical fibers is removed surrounding layer, closely be arranged in to linear array and form a smooth fiber array output end face in the fiber clamp and place an end in the resonator cavity box, the other end of resonator cavity box is provided with a plano-convex lens, and this patent mainly utilizes the method for external cavity mirror to realize the coherent beam combination of laser.
Summary of the invention
The object of the invention is to provide a kind of fibre-optic waveguide and the manufacture method thereof that can carry out the laser self-organized coherence, as long as pumping laser is coupled in this multicore Active Optical Fiber, rare earth in the multicore has source ion that the laser that conversion inspires frequency same phase unanimity takes place simultaneously, spontaneous being concerned with simultaneously, export high coherence's optical-fiber laser.Realized that laser produces and the coherent synchronization of laser is carried out, and can realize self-organized coherence, low to the laser system requirement on devices, practical, make things convenient for the application of civilian and national defense industry.
Because conventional laser beam combination technology is just directly also restrainted the output of multi beam (n bundle) optical-fiber laser together, though can improve the general power n of single beam laser power (be doubly) of laser system, but it just simply superposes multiple laser power, the serious variation of beam quality, the beam quality variation of this beam combination system is applicable to that the casual labourer makes distance.For long reach, then need the coherent beam combination technology, n to be restrainted laser carry out coherent beam combination, laser power increases substantially the n of former single beam laser power
2Doubly.
But, existing laser coherence beam combination system not only beam combination the optical system complexity, require very high to optical device stabilities such as transmission lens and reflection gratings, and require very strict to the matching of light source, also to carry out strictness coupling and phase locking to the phase place of multiple laser, and each cell stability of system is required very high, system cost is high and be not easy practicality.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of self organizing coherent optic fiber wave guide comprises: many rare earth doped fiber plugs, and it adopts improved chemical vapor deposition method manufacturing, and it is arranged in the regular hexagon dot matrix, and wherein rare earth doped fiber plug is positioned at the center of described regular hexagon dot matrix; Be centered around the pure quartz glass rectangular inner cladding of described many rare earth doped fiber plug peripheries; Be centered around the ring-type airport surrounding layer of described inner cladding periphery; And the protective finish that is centered around described surrounding layer periphery.
A kind of fiber laser comprises from left to right the semiconductor pumped light source arranged successively, fiber coupler, to the high high saturating doubly clad optical fiber grating of pump light, the described self organizing coherent optic fiber wave guide, high thoroughly to high anti-doubly clad optical fiber grating of pump light and energy optical fiber output termination to laser of opposing of laser.
A kind of manufacture method of self organizing coherent optic fiber wave guide may further comprise the steps: the using plasma chemical vapor deposition method is made high-purity quartz glass tube, and wire drawing becomes the high purity quartz kapillary on wire-drawer-tower then; Adopt improved chemical vapor deposition method to produce the rare earth doped fiber plug; Many rare earth doped fiber plugs are arranged in the regular hexagon dot matrix, and wherein rare earth doped fiber plug is positioned at the center of described regular hexagon dot matrix, will arrange good described many rare earth doped fiber plugs then and put into the high purity quartz sleeve pipe; After closely arranging a circle high purity quartz kapillary around the described high purity quartz sleeve pipe, form the active microstructured optical fibers prefabricated rods of multicore in the quartz socket tube of packing into together; And be drawn into optical fiber at last.
Described many rare earth doped fiber plugs are seven rare earth doped fiber plugs or 19 rare earth doped fiber plugs.
Every described rare earth doped fiber plug is Yb dosed optical fiber plug, Er-doped fiber plug, thulium doped fiber plug or mixes the holmium fibre-optical mandrel.
Every described rare earth doped fiber plug is the erbium-ytterbium co-doped fiber plug.
The inner cladding periphery of optical fiber is made up of circle (or multi-turn) bigger airport, this ring-type airport and inner cladding quartz material form bigger refractive index contrast, thereby improve the numerical aperture of inner cladding, improved the pumping laser coupling efficiency widely, reduced the coupling difficulty;
The inner cladding shape of optical fiber can be the circle that the ring-type airport is formed, and also can be hexagon, can also be that other is non-circular as pentagon and octagon, breaks the screw type light path of pump light, improves the many fibre cores absorption efficiency and the last conversion efficiency of pump light.
Beneficial effect of the present invention is:
Simplified first generation laser, the relevant synthetic process that produces high power optical fibre laser in back, realized that directly laser produces and the carrying out synchronously of laser coherence, simplifies laser system greatly;
Utilize airport to increase the numerical aperture of inner cladding, reduce the coupling difficulty, improved the pump light coupling efficiency;
The waveguide of multicore rare earth doped fiber itself has improved the absorption efficiency and the last conversion efficiency of pump light, and air cladding layer hole and non-circular inner cladding shape have been broken the screw type light transmission path, have improved the utilization ratio of pump light;
Should be lower from the coherent laser system sun adjuster spare requirement that the coherent light waveguide forms, alleviate pressure to device, the unit pump technology is comparatively ripe, and the system cost cost is low, is easy to realize possessing favorable economic benefit;
Good from this laser coherence of exporting from coherent optic fiber wave guide, good beam quality is convenient to commercial Application, and helps propagation in atmosphere, has application promise in clinical practice.
Description of drawings
Fig. 1 is the structural drawing that a kind of microstructure is mixed the rare earth multi-core fiber;
Fig. 2 be a kind of hexagon inner cladding mix rare earth multi-core fiber structural drawing;
Fig. 3 is a kind of full fiberize fiber laser synoptic diagram;
Fig. 4 is seven core rare earth doped fiber mode of laser field patterns;
Fig. 5 is the mode of laser field pattern of 19 core rare earth doped fibers;
Fig. 6 is the three-dimensional intensity distribution figure of seven core rare earth doped fiber self-organized coherence laser;
Fig. 7 is the x direction laser intensity distribution plan of seven core rare earth doped fibers output coherent laser;
Fig. 8 is the y direction laser intensity distribution plan of seven core rare earth doped fibers output coherent laser.
Embodiment
Below in conjunction with accompanying drawing and provide concrete preferred implementation, technical solution of the present invention is described in detail.
As shown in Figure 1; a kind of microstructure is mixed the rare earth multi-core fiber; wherein 1 be fiber optic hub mix the rare earth fibre core; the 2nd, the equidistant six roots of sensation that is centered around around 1 is mixed the rare earth fibre core; the 3rd, be centered around the quartz glass rectangular inner cladding of mixing rare earth multicore periphery; the 4th, the ring-type airport surrounding layer that the quartz glass inner cladding is outer, the 5th, the protective finish of optical fiber.
This embodiment using plasma chemical vapor deposition (PCVD) technology of the present invention is made high-purity quartz glass tube, and on wire-drawer-tower, wire drawing becomes the high purity quartz kapillary of 2000 ± 10 μ m under 2200 ℃ high temperature then; Adopt improved chemical vapor deposition (MCVD) technology to produce to mix rare earth (comprise and mix ytterbium, er-doped, erbium and ytterbium codoping, mix thulium, mix rare earth ions such as holmium) fibre-optical mandrel, this numerical aperture of mixing the rare earth plug is 0.06, and rear-earth-doped concentration is more than 6000ppm; Seven rare earth doped fiber plugs are arranged in as shown in Figure 1 hexagonal lattice, put into the high purity quartz sleeve pipe that diameter is 28mm arranging the good little cluster of optical fiber; Closely arranging a loop diameter then around it is 2000 μ m, and after internal diameter was the high purity quartz kapillary of 1.95 μ m, the diameter of packing into together was in the quartz socket tube of 34mm, forms the active microstructured optical fibers prefabricated rods of multicore as shown in Figure 1; At last be drawn into the optical fiber that external diameter is 400 μ m at 2100 ℃, the inner cladding numerical aperture NA=0.75 of this optical fiber, each fuse diameter are 20.2 μ m, and each spacing of mixing between the rare earth multicore is 0.92 μ m, promptly becomes self organizing coherent optic fiber wave guide shown in Figure 1.
As shown in Figure 2; a kind of hexagon inner cladding mix the rare earth multi-core fiber; wherein 1 be fiber optic hub mix the rare earth fibre core; the 2nd, the equidistant six roots of sensation that is centered around around 1 is mixed the rare earth fibre core; the 3rd, be centered around the quartz glass hexagon inner cladding of mixing rare earth multicore periphery; the 6th, the low-refraction surrounding layer that the quartz glass inner cladding is outer, the 5th, the protective finish of optical fiber.
This embodiment of the present invention adopts improved chemical vapor deposition (MCVD) technology to produce to mix rare earth (comprise and mix ytterbium, er-doped, erbium and ytterbium codoping, mix thulium, mix rare earth ions such as holmium) fibre-optical mandrel, this numerical aperture of mixing the rare earth plug is 0.08, and rear-earth-doped concentration is more than 6000ppm; Seven rare earth doped fiber plugs are arranged in as shown in Figure 2 hexagonal lattice, it is that 32mm is processed into the hexagon quartz glass sleeve in advance that the little cluster of this optical fiber of arranging is put into diameter, and the inner cladding that forms as shown in Figure 2 is hexagonal rare earth multicore prefabricated quartz fiber rod of mixing; Adopt the low-refraction coating of ultra-violet curing, be drawn into the optical fiber that external diameter is 650 μ m at 2100 ℃, the inner cladding numerical aperture NA=0.46 of this optical fiber, each fuse diameter is 40.6 μ m, each spacing of mixing between the rare earth multicore is 2.58 μ m, promptly becomes self organizing coherent optic fiber wave guide shown in Figure 2.
Adopt improved chemical vapor deposition (MCVD) technology to produce to mix rare earth (comprise and mix ytterbium, er-doped, erbium and ytterbium codoping, mix thulium, mix rare earth ions such as holmium) fibre-optical mandrel, this numerical aperture of mixing the rare earth plug is 0.07, and rear-earth-doped concentration is more than 6000ppm.19 rare earth doped fiber plugs are arranged in the regular hexagon dot matrix, and it is that 44mm is processed into the hexagon quartz glass sleeve in advance that the little cluster of this optical fiber of arranging is put into diameter, and forming inner cladding is hexagonal rare earth multicore prefabricated quartz fiber rod of mixing.Adopt the low-refraction coating of ultra-violet curing, be drawn into the optical fiber that external diameter is 650 μ m at 2100 ℃, the inner cladding numerical aperture NA=0.46 of this optical fiber, each fuse diameter is 50.2 μ m, each spacing of mixing between the rare earth multicore is 1.20 μ m, promptly becomes self organizing coherent optic fiber wave guide of the present invention.
Adopt improved chemical vapor deposition (MCVD) technology to produce to mix rare earth (comprise and mix ytterbium, er-doped, erbium and ytterbium codoping, mix thulium, mix rare earth ions such as holmium) fibre-optical mandrel, this numerical aperture of mixing the rare earth plug is 0.06, and rear-earth-doped concentration is more than 6000ppm.With the octagon dot matrix that seven rare earth doped fiber plugs are arranged in, it is that 32mm is processed into the hexagon quartz glass sleeve in advance that the little cluster of this optical fiber of arranging is put into diameter, and forming inner cladding is the octagonal rare earth multicore prefabricated quartz fiber rod of mixing.Adopt the low-refraction coating of ultra-violet curing, be drawn into the optical fiber that external diameter is 400 μ m at 2100 ℃, the inner cladding numerical aperture NA=0.46 of this optical fiber, each fuse diameter is 22.6 μ m, each spacing of mixing between the rare earth multicore is 8.20 μ m, promptly becomes self organizing coherent optic fiber wave guide of the present invention.
Multicore of the present invention is mixed the waveguide of rare earth Active Optical Fiber according to the fiber laser that is combined into shown in Figure 3, as shown in Figure 3, a kind of full fiberize fiber laser, wherein 7 is semiconductor pumped, the 8th, fiber coupler, the 9th, to the high high saturating doubly clad optical fiber grating of pump light of opposing of laser, the 10th, mix rare earth multicore doubly clad optical fiber, the 11st, high to laser thoroughly to the high anti-doubly clad optical fiber grating of pump light, the 12nd, energy optical fiber output termination.
As shown in Figure 4, be seven core rare earth doped fiber mode of laser field patterns, shown the mode of laser field between seven rare earth cores; Fig. 5 is the mode of laser field pattern of 19 core rare earth doped fibers, shown the mode of laser field distribution between 19 rare earth cores; Fig. 6 is the three-dimensional intensity distribution figure of seven core rare earth doped fiber self-organized coherence laser, has shown the three-dimensional intensity distribution of this multicore Active Optical Fiber waveguide output laser; Fig. 7 and Fig. 8 are respectively that intercepting x and y direction laser intensity distribute, and obey approximate Gaussian distribution, good beam quality.Can reach a conclusion from mode of laser field and the intensity distributions of Fig. 5～Fig. 8: this multicore is mixed the self-organized coherence that the waveguide of rare earth Active Optical Fiber has realized optical-fiber laser, has obtained the laser output of good beam quality.
In addition, above-mentioned only is better embodiment of the present invention, in order to restriction the present invention, not all within principle and spirit that the present invention can realize, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of self organizing coherent optic fiber wave guide comprises:
Many rare earth doped fiber plugs, it adopts improved chemical vapor deposition method manufacturing, and it is arranged in the regular hexagon dot matrix, and wherein rare earth doped fiber plug is positioned at the center of described regular hexagon dot matrix;
Be centered around the pure quartz glass rectangular inner cladding of described many rare earth doped fiber plug peripheries;
Be centered around the ring-type airport surrounding layer of described inner cladding periphery; And
Be centered around the protective finish of described surrounding layer periphery.
2, self organizing coherent optic fiber wave guide as claimed in claim 1 is characterized in that:
Described many rare earth doped fiber plugs are seven rare earth doped fiber plugs or 19 rare earth doped fiber plugs.
3, self organizing coherent optic fiber wave guide as claimed in claim 1 or 2 is characterized in that:
Every described rare earth doped fiber plug is Yb dosed optical fiber plug, Er-doped fiber plug, thulium doped fiber plug or mixes the holmium fibre-optical mandrel.
4, self organizing coherent optic fiber wave guide as claimed in claim 1 or 2 is characterized in that:
Every described rare earth doped fiber plug is the erbium-ytterbium co-doped fiber plug.
5, a kind of fiber laser comprises from left to right the semiconductor pumped light source arranged successively, fiber coupler, to the high high saturating doubly clad optical fiber grating of pump light, the self organizing coherent optic fiber wave guide as claimed in claim 1, high thoroughly to high anti-doubly clad optical fiber grating of pump light and energy optical fiber output termination to laser of opposing of laser.
6, a kind of manufacture method of self organizing coherent optic fiber wave guide may further comprise the steps:
The using plasma chemical vapor deposition method is made high-purity quartz glass tube, and wire drawing becomes the high purity quartz kapillary on wire-drawer-tower then;
Adopt improved chemical vapor deposition method to produce the rare earth doped fiber plug;
Many rare earth doped fiber plugs are arranged in the regular hexagon dot matrix, and wherein rare earth doped fiber plug is positioned at the center of described regular hexagon dot matrix, will arrange good described many rare earth doped fiber plugs then and put into the high purity quartz sleeve pipe;
After closely arranging a circle high purity quartz kapillary around the described high purity quartz sleeve pipe, form the active microstructured optical fibers prefabricated rods of multicore in the quartz socket tube of packing into together; And
Be drawn into optical fiber at last.
7, manufacture method as claimed in claim 6 is characterized in that:
Described many rare earth doped fiber plugs are seven rare earth doped fiber plugs or 19 rare earth doped fiber plugs.
8, manufacture method as claimed in claim 6 is characterized in that:
Every described rare earth doped fiber plug is Yb dosed optical fiber plug, Er-doped fiber plug, thulium doped fiber plug or mixes the holmium fibre-optical mandrel.
9, manufacture method as claimed in claim 6 is characterized in that:
Every described rare earth doped fiber plug is the erbium-ytterbium co-doped fiber plug.
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| CN101794955B (en) * | 2010-02-10 | 2012-02-29 | 华中科技大学 | A kind of preparation method of all-fiber laser synthesis device |
| CN102315581B (en) * | 2011-07-25 | 2013-05-01 | 武汉长盈通光电技术有限公司 | Er-doped full-solid photon band gap optical fiber power supply with high average wavelength stability |
| CN104393485B (en) * | 2014-09-26 | 2017-10-27 | 中国科学院长春光学精密机械与物理研究所 | Laser array relevant device and preparation method thereof |
| CN111517637B (en) * | 2020-05-22 | 2021-04-27 | 长飞光纤光缆股份有限公司 | Rare earth doped multi-core optical fiber, optical fiber preform, preparation method and application thereof |
| CN113589433A (en) * | 2021-07-21 | 2021-11-02 | 芯华创(武汉)光电科技有限公司 | High-fiber-core-number multi-core fiber coupler based on fused biconical taper and preparation method thereof |
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| CN1141096A (en) * | 1994-02-18 | 1997-01-22 | 英国电讯有限公司 | Gain Controlled Fiber Amplifier |
| US6345141B1 (en) * | 1998-01-28 | 2002-02-05 | Sdl, Inc. | Double-clad optical fiber with improved inner cladding geometry |
| CN1564035A (en) * | 2004-04-12 | 2005-01-12 | 烽火通信科技股份有限公司 | Rare-earth doped photon crystal optical fiber |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141096A (en) * | 1994-02-18 | 1997-01-22 | 英国电讯有限公司 | Gain Controlled Fiber Amplifier |
| US6345141B1 (en) * | 1998-01-28 | 2002-02-05 | Sdl, Inc. | Double-clad optical fiber with improved inner cladding geometry |
| CN1564035A (en) * | 2004-04-12 | 2005-01-12 | 烽火通信科技股份有限公司 | Rare-earth doped photon crystal optical fiber |
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