CN101814687A - High-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier - Google Patents
High-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier Download PDFInfo
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Abstract
The invention relates to a high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier which belongs to the field of high-power broadband optical fiber amplifiers, lasers and special optical fibers. The optical fiber amplifier comprises pump light, signal light and an active optical fiber, wherein the active optical fiber adopts N layers of rare-earth ion-doped ring-core optical fibers, the N is not less than 2 and not more than 10, and the pump light is coupled into the active optical fiber to realize multiband signal light amplification. Because the adopted N layers of rare-earth ion-doped ring-core optical fibers exist in a common central cladding region, the pumping efficiency is greatly improved. Relatively to a traditional double-cladding optical fiber amplifier which only can amplify single-band signal light, the optical fiber amplifier realizes multiband signal light amplification. Relatively to a traditional multiband signal light amplifying device, because the devices are reduced, the optical fiber amplifier has the advantages of more compact structure, insertion loss reduction, reliability improvement, small environmental influence and the like.
Description
Technical field
The present invention relates to high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier, belong to high-power broadband optical fiber amplifier, laser, special optical fiber field.
Background technology
The rare earth doped fiber amplifier has been obtained increasingly extensive application with its remarkable performance and cheap price in fields such as optical fiber communication, industrial processes, medical treatment, military affairs.Doped rare earth element has Nd, Sm, and Ho, Er, Pr, Tm, Yb etc. because the photoelectricity characteristic of doped rare earth element is all inequality each other, cause each doped rare earth element operating wavelength range also different.For example, neodymium-doped fiber amplifier operating wavelength range is 900-950nm, 1000-1150nm, 1320-1400nm; The erbium-doped fiber amplifier operating wavelength range is 550nm, 850nm, 980-1000nm, 1500-1600nm, 1660nm, 1720nm, 2700nm; The ytterbium doped optical fiber amplifier operating wavelength range is 970-1040nm; Mixing thorium fiber amplifier operating wavelength range is 455nm, 480nm, 803-825nm, 1460-1510nm, 1700-2015nm, 2250-2400nm; The PDFA Praseodymium Doped Fiber Amplifier operating wavelength range is 490nm, 520nm, 601-618nm, 631-641nm, 707-725nm, 880-886nm, 902-916nm, 1060-1110nm, 1260-1350nm; Mixing holmium fiber amplifier operating wavelength range is 550nm, 753nm, and 1380nm, 2040-2080nm, 2900nm, mixing samarium fiber amplifier operating wavelength range is 651nm.Mix the rare earth ion of different glass matrixs, its gain bandwidth and character are also variant, the Er-doped fiber of pure silicon optical fiber glass matrix for example, gain half-wave spectrum width is 7.94nm during its wavelength 1500nm, and the Er-doped fiber of aluminium phosphorus silicon optical fiber glass matrix, gain half-wave spectrum width is 43.3nm[W.J.Miniscalco.Optical and electronic properties ofrare-earth ions in glasses in rare-earth doped fiber lasers and amplifier.NewYork:Marcel Dekker.2001 during its wavelength 1500nm, pp:17-112].
In May, 2002, the ITU-T of International Telecommunications Union tissue was divided the optical fiber telecommunications system optical band as follows:
The original wave band of O wave band is 1260-1360nm, and E band extension wave band is 1360-1460nm;
The S-band S-band is 1460-1530nm, and the conventional wave band of C-band is 1530-1565nm; The L-band L-band is 1565-1625nm; U wave band myriametric wave long-wave band is 1625-1675nm.
Realization studies show that, making the C-band erbium-doped fiber amplifier need active fiber lengths be 2.5 meters, and make the L-band erbium-doped fiber amplifier need active fiber lengths be 10 meters [the big Zheng Kai of Fu Yong army letter etc. high concentration Er-doped fiber and amplifier that bismuth gallium aluminium is mixed altogether. photoelectron technology .2007,27 (1): 17-19].Obviously, only adopting an erbium-doped fiber amplifier is that the flashlight that can't realize C-band and L-band two wave bands amplifies.
Existing fiber amplifier can amplifying signal light only be single-range flashlight, and bandwidth has only tens nm usually.In the device of existing realization multi-wave signal light, need earlier the flashlight partial wave to be treated to single band signal light, then single band signal light is disposed the fiber amplifier of corresponding rare-earth ion-doped type respectively, the single band signal light that will amplify at last closes ripple and handles, the insertion loss of complex structure, introducing is big, discrete component is many, poor reliability, very high to environment sensitive and cost.
Summary of the invention
For overcome existing double-cladding fiber amplifier can only amplify single-range flashlight, existing realize in the multi-wave signal optical amplifier since need to the flashlight partial wave, amplify with close complex structure that the ripple processing causes, the insertion loss is big, discrete component is many, poor reliability, to environment sensitive and the very high shortcoming of cost, the invention provides a kind of high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier.
The objective of the invention is to be achieved through the following technical solutions:
A kind of high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier, this amplifier comprises: pump light, flashlight and Active Optical Fiber, and what Active Optical Fiber adopted is N layer rare earth doped ion ring core fiber, 2≤N≤10, pump light is coupled into Active Optical Fiber, realizes the multi-wave signal light amplification.
First pump light carries out end pumping or profile pump to Active Optical Fiber, or first pump light and second pump light while end pumping and profile pump.
First pump light or first pump light and second pump light are the wave-length coverage inner light source of rare-earth ion-doped absorption cross-section correspondence in the N layer rare earth doped ion ring core fiber.
First pump light or first pump light and second pump light, or be made of the pump light of a plurality of different wave-length coverages are in the corresponding N layer of its total pump light wave-length coverage rare earth doped ion ring core fiber in the wave-length coverage of rare-earth ion-doped absorption cross-section correspondence.
For the doped rare earth element operating wavelength range is all covered, definition here: A band minimal wave length wave band is less than 1260nm; The L-band of Z wave band is greater than 1675nm.
Beneficial effect of the present invention is specific as follows: this high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier, comprise pump light, flashlight and N layer rare earth doped ion ring core fiber, and can amplify A, O, E, S simultaneously, C, L, the flashlight of U, Z wave band, 2≤N≤10.Can only amplify single-range flashlight with respect to existing double-cladding fiber amplifier, this high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier of the present invention has been realized the multi-wave signal light amplification.In the device of existing realization multi-wave signal light amplification, need earlier the flashlight partial wave to be treated to single band signal light, then single band signal light is disposed corresponding rare-earth ion-doped type fiber amplifier respectively, the single band signal that will amplify is at last closed ripple and is handled.Owing to adopt N layer rare earth doped ion ring core fiber to have a common center clad region, therefore greatly improved pumping efficiency.Adopt this high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier of the present invention owing to reduced device, structure is compact more, inserts loss and reduces, and reliability improves, advantage such as little affected by environment.
Description of drawings
Fig. 1 is the two-layer rare-earth ion-doped cylindrical core fiber amplifier schematic diagrames of high-power two wave bands.
The Active Optical Fiber sectional view that Fig. 2 adopts for Fig. 1.
Fig. 3 is three layers of rare-earth ion-doped rectangular ring core amplifier schematic diagram of high-power triband.
The Active Optical Fiber sectional view that Fig. 4 adopts for Fig. 3.
Fig. 5 is five layers of rare-earth ion-doped elliptical ring core fibre amplifier schematic diagram of high-power four wave bands.
The Active Optical Fiber sectional view that Fig. 6 adopts for Fig. 5.
Fig. 7 is ten layers of rare-earth ion-doped cylindrical core fiber amplifier schematic diagram of high-power eight wave bands.
The Active Optical Fiber sectional view that Fig. 8 adopts for Fig. 7.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment one
The two-layer rare-earth ion-doped cylindrical core fiber amplifier of a kind of high-power two wave bands as shown in Figure 1, this amplifier comprises: first pump light 5, flashlight 6 and Active Optical Fiber 7, Active Optical Fiber 7 is two-layer rare-earth ion-doped cylindrical core optical fiber, Active Optical Fiber 7 sectional views as shown in Figure 2, this Active Optical Fiber center is outside silicon core district 1, the silicon core district 1, distribute from inside to outside first rare earth doped ion ring core 41, second rare earth doped ion ring core 42, surrounding layer 3.The rare-earth ion-doped of first rare earth doped ion ring core 41 is erbium ion, and second rare earth doped ion ring core 42 is rare-earth ion-doped to be ytterbium ion.
First pump light 5 is the wave-length coverage inner light source of erbium ion, ytterbium ion absorption cross-section correspondence.
First pump light 5, or constitute by the pump light of two different wave-length coverages, one is the wave-length coverage inner light source of erbium ion absorption cross-section correspondence, one is the wave-length coverage inner light source of ytterbium ion absorption cross-section correspondence.
Embodiment two
Three layers of rare-earth ion-doped rectangular ring core amplifier of a kind of high-power triband as shown in Figure 3, this amplifier comprises: first pump light 5, flashlight 6 and Active Optical Fiber 7, Active Optical Fiber 7 is that three layers of rare-earth ion-doped rectangular ring core amplify, Active Optical Fiber 7 sectional views as shown in Figure 4, this Active Optical Fiber center is outside silicon core district 1, the silicon core district 1, and first rare earth doped ion ring core 41, the first silicon ring core 21, second rare earth doped ion ring core 42, the second silicon ring core 22, the 3rd rare earth doped ion ring core 43, the 3rd silicon ring core 23, surrounding layer 3 from inside to outside distribute.
First the rare-earth ion-doped of rare earth doped ion ring core 41 mixed ion mutually for the neodymium ytterbium, and second rare earth doped ion ring core 42 is rare-earth ion-doped to be holmium ion, and the rare-earth ion-doped of the 3rd rare earth doped ion ring core 43 is thorium ion.
First pump light 5 is the wave-length coverage inner light source of ytterbium ion, holmium ion and thorium ion absorption cross-section correspondence.
First pump light 5, or constitute by the pump light of two different wave-length coverages, one is the wave-length coverage inner light source of ytterbium ion and holmium ion absorption cross-section correspondence, one is the wave-length coverage inner light source of thorium ion absorption cross-section correspondence.
Flashlight 6 wave-length coverages are the 1000-1100nm of A band, the 1380nm of E wave band, the 2050-2060nm of Z wave band and 1800nm; First pump light 5 is coupled into Active Optical Fiber, and Active Optical Fiber 3 is carried out profile pump, realizes the 1000-1100nm to A band, the 1380nm of E wave band, the amplification of the 2050-2060nm of Z wave band and the flashlight of 1800nm.
Embodiment three
Five layers of rare-earth ion-doped elliptical ring core fibre amplifier of a kind of high-power four wave bands as shown in Figure 5, this amplifier comprises: first pump light 5 and second pump light 51, flashlight 6 and Active Optical Fiber 7, Active Optical Fiber 7 is five layers of rare-earth ion-doped elliptical ring core fibre, Active Optical Fiber 7 sectional views as shown in Figure 6, this Active Optical Fiber center is silicon core district 1, outside the silicon core district 1, first rare earth doped ion ring core 41 from inside to outside distributes, the first silicon ring core 21, second rare earth doped ion ring core 42, the second silicon ring core 22, the 3rd rare earth doped ion ring core 43, the 3rd silicon ring core 23, the 4th rare earth doped ion ring core 44, the 4th silicon ring core 24, the 5th rare earth doped ion ring core 45, the 5th silicon ring core 25, surrounding layer 3.
First the rare-earth ion-doped of rare earth doped ion ring core 41 mixed ion mutually for the erbium ytterbium, the rare-earth ion-doped of second rare earth doped ion ring core 42 is praseodymium ion, the rare-earth ion-doped of the 3rd rare earth doped ion ring core 43 is samarium ion, the rare-earth ion-doped of the 4th rare earth doped ion ring core 44 is neodymium ion, and the rare-earth ion-doped of the 5th rare earth doped ion ring core 45 is erbium ion.
First pump light 5 is the corresponding wave-length coverage inner light source of ytterbium ion, praseodymium ion, erbium ion, samarium ion and neodymium ion absorption cross-section with second pump light 51.
Embodiment four
Ten layers of rare-earth ion-doped cylindrical core fiber amplifier of a kind of high-power eight wave bands as shown in Figure 7, this amplifier comprises: first pump light 5, flashlight 6 and Active Optical Fiber 7, Active Optical Fiber 7 is ten layers of rare-earth ion-doped cylindrical core optical fiber, Active Optical Fiber 7 sectional views as shown in Figure 8, this Active Optical Fiber center is silicon core district 1, outside the silicon core district 1, first rare earth doped ion ring core 41 from inside to outside distributes, second rare earth doped ion ring core 42, the 3rd rare earth doped ion ring core 43, the 4th rare earth doped ion ring core 44, the 5th rare earth doped ion ring core 45, the 6th rare earth doped ion ring core 46, the first silicon ring core 21, the 7th rare earth doped ion ring core 47, the 8th rare earth doped ion ring core 48, the 9th rare earth doped ion ring core 49, the tenth rare earth doped ion ring core 410, the second silicon ring core 22, surrounding layer 3.
The rare-earth ion-doped of first rare earth doped ion ring core 41 is ytterbium ion, the rare-earth ion-doped of second rare earth doped ion ring core 42 is erbium ion, the 3rd the rare-earth ion-doped of rare earth doped ion ring core 43 mixed ion mutually for the neodymium ytterbium, the rare-earth ion-doped of the 4th rare earth doped ion ring core 44 is holmium ion, the rare-earth ion-doped of the 5th rare earth doped ion ring core 45 is thorium ion, the 6th the rare-earth ion-doped of rare earth doped ion ring core 46 mixed ion mutually for the erbium ytterbium, the rare-earth ion-doped of the 7th rare earth doped ion ring core 47 is praseodymium ion, the rare-earth ion-doped of the 8th rare earth doped ion ring core 48 is samarium ion, the rare-earth ion-doped of the 9th rare earth doped ion ring core 49 is neodymium ion, and the rare-earth ion-doped of the tenth rare earth doped ion ring core 410 is ytterbium ion.
First pump light 5 is erbium ion, ytterbium ion, holmium ion, thorium ion, praseodymium ion, the wave-length coverage inner light source of samarium ion and neodymium ion absorption cross-section correspondence.
First pump light 5, can constitute by the pump light of three different wave-length coverages, one is erbium ion, ytterbium ion and holmium ion, the wave-length coverage inner light source of absorption cross-section correspondence, one is the wave-length coverage inner light source of thorium ion and praseodymium ion absorption cross-section correspondence, and one is the wave-length coverage inner light source of samarium ion and neodymium ion absorption cross-section correspondence.
Flashlight 6 wave-length coverages are the 455nm of A band, 550nm, 651nm, 1060nm and 1110nm, the 1330nm of O wave band, the 1380nm of E wave band, the 1520-1530nm of S-band, the 1550-1560nm of C-band, the 1600nm of L-band, the 2900nm of the 1660nm of U wave band and Z wave band; First pump light 5 is coupled into Active Optical Fiber, and Active Optical Fiber 7 is carried out profile pump, realizes the 455nm to A band, 550nm, 651nm, 1060nm and 1110nm, the 1330nm of O wave band, the 1380nm of E wave band,, the 1520-1530nm of S-band, the 1550-1560nm of C-band, the 1600nm of L-band, the amplification of the flashlight of the 2900nm of the 1660nm of U wave band and Z wave band.
The N layer rare earth doped ion ring core fiber that the present invention adopts, 2≤N≤10 are 2009.12.18 and are " multilayer rare earth doped ion ring core fiber and preparation method thereof ", application number by the denomination of invention of Beijing Jiaotong University's application: 200910243346.3, optical fiber.Being characterized as of this optical fiber: this fiber optic hub is outside silicon core district 1, the silicon core district 1, first rare earth doped ion ring core 41, the second rare earth doped ion ring core 42... N rare earth doped ion ring core 4N from inside to outside distribute, the outside distribution surrounding layer 3 of 2≤N≤10, the N rare earth doped ion ring core 4N.
First rare earth doped ion ring core 41, second rare earth doped ion ring core 42 ... the refractive index of N rare earth doped ion ring core 4N equates;
The refractive index in silicon core district 1 be lower than first rare earth doped ion ring core 41, second rare earth doped ion ring core 42 ... the refractive index of N rare earth doped ion ring core 4N;
The refractive index of surrounding layer 3 is lower than the refractive index in silicon core district 1.
Be distributed as the first silicon ring core 21, the second silicon ring core 22... K silicon ring core 2K between first rare earth doped ion ring core 41, the second rare earth doped ion ring core 42... N rare earth doped ion ring core 4N, the surrounding layer 3 from inside to outside, 0≤K≤N;
The refractive index of the first silicon ring core 21... K silicon ring core 2K equates with the refractive index in silicon core district 1.
Claims (2)
1. high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier, this amplifier comprises: pump light, flashlight and Active Optical Fiber; It is characterized in that: what Active Optical Fiber adopted is N layer rare earth doped ion ring core fiber, 2≤N≤10, and pump light is coupled into Active Optical Fiber, realizes the multi-wave signal light amplification.
2. high-power multiband multilayer rare-earth ion-doped ring-core optical fiber amplifier according to claim 1, it is characterized in that: first pump light carries out end pumping or profile pump to Active Optical Fiber, or first pump light and second pump light while end pumping and profile pump.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478741A (en) * | 2010-11-26 | 2012-05-30 | 北京交通大学 | Large effective mode field area single mode amplifier with exposure region in active quartz rod |
| CN104865635A (en) * | 2015-06-01 | 2015-08-26 | 武汉睿芯特种光纤有限责任公司 | Elliptical cladding polarization-maintaining large-mode-area gain fiber |
| CN108899751A (en) * | 2018-08-20 | 2018-11-27 | 桂林电子科技大学 | Support the EDFA and its modal gain equalization methods of six linearly polarized mode signal light amplification |
-
2010
- 2010-01-15 CN CN2010100338931A patent/CN101814687B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478741A (en) * | 2010-11-26 | 2012-05-30 | 北京交通大学 | Large effective mode field area single mode amplifier with exposure region in active quartz rod |
| CN104865635A (en) * | 2015-06-01 | 2015-08-26 | 武汉睿芯特种光纤有限责任公司 | Elliptical cladding polarization-maintaining large-mode-area gain fiber |
| CN104865635B (en) * | 2015-06-01 | 2018-10-12 | 武汉睿芯特种光纤有限责任公司 | A kind of ellipse covering polarization-maintaining large mode field gain fibre |
| CN108899751A (en) * | 2018-08-20 | 2018-11-27 | 桂林电子科技大学 | Support the EDFA and its modal gain equalization methods of six linearly polarized mode signal light amplification |
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