CN101876773A - Large-power multiband single-core optical fiber amplifier - Google Patents
Large-power multiband single-core optical fiber amplifier Download PDFInfo
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- CN101876773A CN101876773A CN2009102416152A CN200910241615A CN101876773A CN 101876773 A CN101876773 A CN 101876773A CN 2009102416152 A CN2009102416152 A CN 2009102416152A CN 200910241615 A CN200910241615 A CN 200910241615A CN 101876773 A CN101876773 A CN 101876773A
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Abstract
The invention discloses a large-power multiband single-core optical fiber amplifier and belongs to the technical fields of large-power broadband optical fiber amplifiers and special fibers. The amplifier comprises first pump light (1), signal light (2) and an active optical fiber (3); the active optical fiber is a single-core doubly clad optical fiber with multiple rear earth ion doped regions; the pump light is coupled into the active optical fiber to amplify multiband signal light. By the invention, the defect that the traditional doubly clad optical fiber amplifier only can amplify single-band signal light is overcome. Compared with the traditional device which can realize multiband signal light amplification, the large-power multiband single-core optical fiber amplifier has the advantages of compacter structure, reduced insertion loss, improved reliability, less influence from environment and the like. Since a single-core structure is adopted, the multiband optical fiber amplifier can be connected with common optical fibers easily.
Description
Technical field
The present invention relates to large-power multiband single-core optical fiber amplifier, belong to high-power broadband optical fiber amplifier, special optical fiber technical 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 (EDFA) 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 (GB) 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 (ITU) tissue was divided the optical fiber telecommunications system optical band as follows: O wave band (original wave band) is 1260-1360nm, and E wave band (ben) is 1360-1460nm; S-band (S-band) is 1460-1530nm, and C-band (conventional wave band) is 1530-1565nm; L-band (L-band) is 1565-1625nm; U wave band (myriameter waves long-wave band) is 1625-1675nm.
Realization studies show that making the C-band Erbium-Doped Fiber Amplifier (EDFA) need active fiber lengths be 2.5 meters, need active fiber lengths be 10 meters and make the L-band Erbium-Doped Fiber Amplifier (EDFA).[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, realize the amplification of the signal of C-band and L-band simultaneously, only adopt an Erbium-Doped Fiber Amplifier (EDFA) to realize.
Existing high-power double-cladding 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 amplification, need earlier the flashlight partial wave to be treated to single band signal light, then single band signal light is disposed the double-cladding 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 signal, 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 multiband single-core optical fiber amplifier.
A kind of large-power multiband single-core optical fiber amplifier, this amplifier comprises: pump light, flashlight and Active Optical Fiber, what Active Optical Fiber adopted is single-core multiple rare-earth-doped ion region double-clad optical fiber, and 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 Active Optical Fiber is carried out end pumping and second pump light carries out profile pump to Active Optical Fiber.
First pump light or second pump light are the wavelength coverage inner light source of the rare-earth ion-doped absorption cross section correspondence of single-core multiple rare-earth-doped ion region double-clad optical fiber.
First pump light or second pump light, or constitute by the pump light of a plurality of different wavelength coverages, in the wavelength coverage of the rare-earth ion-doped absorption cross section correspondence of the corresponding single-core multiple rare-earth-doped ion region double-clad optical fiber of its total pump light wavelength coverage.
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; Z wave band (L-band) is greater than 1675nm.
Beneficial effect of the present invention is specific as follows: this large-power multiband single-core optical fiber amplifier, comprise pump light, flashlight and single-core multiple rare-earth-doped ion region double-clad optical fiber, and can amplify A, O, E, S simultaneously, C, L, the flashlight of U, Z wave band.In the device with respect to the light amplification of existing realization multi-wave signal, need earlier the flashlight partial wave to be treated to single band signal light, then single band signal light is disposed the double-cladding fiber amplifier of corresponding rare-earth ion-doped type respectively, the single band signal that to amplify is at last closed ripple and is handled, adopt multiband single-core optical fiber amplifier obviously to reduce junction loss, structure is compact more, owing to reduced device, compact conformation, the insertion loss reduces, reliability improves, advantage such as little affected by environment.Because adopt single cored structure, this multiband light fiber amplifier is connected easily with ordinary optic fibre.
Description of drawings
Fig. 1 is high-power two wave band single-core fiber amplifier synoptic diagram.
The Active Optical Fiber sectional view that Fig. 2 adopts for Fig. 1.
Fig. 3 is high-power triband single-core fiber amplifier synoptic diagram.
The Active Optical Fiber sectional view that Fig. 4 adopts for Fig. 3.
Fig. 5 is high-power four wave band single-core fiber amplifier synoptic diagram.
The Active Optical Fiber sectional view that Fig. 6 adopts for Fig. 5.
Fig. 7 is high-power eight wave band single-core fiber amplifier synoptic diagram.
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
A kind of large-power multiband single-core optical fiber amplifier as shown in Figure 1, this amplifier comprises: first pump light 1, flashlight 2 and Active Optical Fiber 3, single core two rare-earth-doped ion region double-clad optical fibers that Active Optical Fiber 3 adopts, Active Optical Fiber 3 sectional views as shown in Figure 2, the sandwich layer radius is 3 microns, and sandwich layer comprises er-doped ion district 6, mixes ytterbium ion district 7, inner cladding 5 diameters are 60 microns, and surrounding layer 4 diameters are 125 microns.
First pump light 1 is the wavelength coverage inner light source of erbium ion, ytterbium ion absorption cross section correspondence.
First pump light 1, or constitute by the pump light of two different wavelength coverages, one is the wavelength coverage inner light source of erbium ion absorption cross section correspondence, one is the wavelength coverage inner light source of ytterbium ion absorption cross section correspondence.
Flashlight 2 is the 1000nm of A band and the 1550nm of C-band for wavelength; First pump light 1 is coupled into Active Optical Fiber, and Active Optical Fiber is carried out end pumping, realizes the amplification to the flashlight of the 1550nm of the 1000nm of A band and C-band.
Embodiment two
A kind of large-power multiband single-core optical fiber amplifier as shown in Figure 3, this amplifier comprises: first pump light 1, flashlight 2 and Active Optical Fiber 3, single core four rare-earth-doped ion region double-clad optical fibers that Active Optical Fiber 3 adopts, Active Optical Fiber 3 sectional views as shown in Figure 4, the sandwich layer radius is 10 microns, sandwich layer comprises that the neodymium ytterbium mixes ion district 8 mutually, mixes holmium ion district 9, mixes thorium ion district 10; Inner cladding 5 is 500 * 600 microns, and surrounding layer 4 diameters are 750 microns.
First pump light 1 is the wavelength coverage inner light source of ytterbium ion, holmium ion and thorium ion absorption cross section correspondence.
First pump light 1, or constitute by the pump light of two different wavelength coverages, one is the wavelength coverage inner light source of ytterbium ion and holmium ion absorption cross section correspondence, one is the wavelength coverage inner light source of thorium ion absorption cross section correspondence.
Flashlight 2 is the 1000-1100nm of A band, the 1380nm of E wave band, the 2050-2060nm of Z wave band and 1800nm; First pump light 1 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
A kind of large-power multiband single-core optical fiber amplifier as shown in Figure 5, this amplifier comprises: first pump light 1, second pump light 20, flashlight 2 and Active Optical Fiber 3, single core eight rare-earth-doped ion region double-clad optical fibers that Active Optical Fiber 3 adopts, Active Optical Fiber 3 sectional views as shown in Figure 6, the sandwich layer radius is 4 microns, sandwich layer comprises that the erbium ytterbium mixes ion district 11 mutually, mix praseodymium ion district 12, mix samarium ion district 13, Nd ion doped district 14, er-doped ion district 6; Inner cladding 5 is an octagon, and diameter is 800 microns, and surrounding layer 4 diameters are 900 microns.
First pump light 1, second pump light 20 are the wavelength coverage inner light source of ytterbium ion, praseodymium ion, erbium ion, samarium ion and neodymium ion absorption cross section correspondence.
Flashlight 2 is the 651nm and the 1060nm of A band, and the O wave band is 1310nm, and C-band is the 1660nm of 1550nm and U wave band; First pump light 1 and second pump light 20 are coupled into Active Optical Fiber, 1 pair of Active Optical Fiber of first pump light 3 carries out end pumping, 20 pairs of Active Optical Fibers of second pump light 3 carry out profile pump, realization is to the 651nm and the 1060nm of A band, the O wave band is 1310nm, and C-band is the amplification of flashlight of the 1660nm of 1550nm and U wave band.
Embodiment four
A kind of large-power multiband single-core optical fiber amplifier as shown in Figure 7, this amplifier comprises: pump light 1, flashlight 2 and Active Optical Fiber 3, single core 20 rare-earth-doped ion region double-clad optical fibers that Active Optical Fiber 3 adopts, Active Optical Fiber 3 as shown in Figure 8, the sandwich layer radius is 20 microns, sandwich layer comprises er-doped ion district 6, mix ytterbium ion district 7, the neodymium ytterbium is mixed ion district 8 mutually, mixes holmium ion district 9, mixes thorium ion district 10, the erbium ytterbium is mixed ion district 11 mutually, mix praseodymium ion district 12, mix samarium ion district 13, Nd ion doped district 14; Inner cladding 5 diameters are 1000 microns, and surrounding layer 4 diameters are 1150 microns.
First pump light 1 is erbium ion, ytterbium ion, holmium ion, thorium ion, praseodymium ion, the wavelength coverage inner light source of samarium ion and neodymium ion absorption cross section correspondence.
First pump light 1, can constitute by the pump light of three different wavelength coverages, one is erbium ion, ytterbium ion and holmium ion, the wavelength coverage inner light source of absorption cross section correspondence, one is the wavelength coverage inner light source of thorium ion and praseodymium ion absorption cross section correspondence, one is the wavelength coverage inner light source of samarium ion and neodymium ion absorption cross section correspondence
Single-core multiple rare-earth-doped ion region double-clad optical fiber of the present invention, be denomination of invention: single-core multiple rare-earth-doped ion region double-clad optical fiber and preparation method thereof, October 22 2009 applying date, application number: 299010236162.4, the single-core multiple rare-earth-doped ion region double-clad optical fiber of made.
Its making step summary:
Step 1 is drawn into the thin rod of sandwich layer equal diameters with the prefabricated rods of the rare-earth ion-doped doubly clad optical fiber of N root, and surrounding layers of these thin rods are removed the integer of 2≤N≤20;
Claims (2)
1. large-power multiband single-core optical fiber amplifier, this amplifier comprises: pump light, flashlight (2) and Active Optical Fiber (3); It is characterized in that: what Active Optical Fiber (3) adopted is single-core multiple rare-earth-doped ion region double-clad optical fiber, and pump light is coupled into Active Optical Fiber, realizes the multi-wave signal light amplification.
2. large-power multiband single-core optical fiber amplifier according to claim 1 is characterized in that: first pump light (1), carry out end pumping or profile pump to Active Optical Fiber; Or first pump light (1) Active Optical Fiber is carried out end pumping and second pump light (20) carries out profile pump to Active Optical Fiber.
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| CN2009102416152A CN101876773B (en) | 2009-11-27 | 2009-11-27 | Large-power multiband single-core optical fiber amplifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262263A (en) * | 2011-09-01 | 2011-11-30 | 北京交通大学 | Optical fibre with multiple-sector fiber core at periphery of multiple-sector area of circular fiber core, and fabrication method thereof |
| WO2015157980A1 (en) * | 2014-04-17 | 2015-10-22 | 华为技术有限公司 | Optical waveguide and printed circuit board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262263A (en) * | 2011-09-01 | 2011-11-30 | 北京交通大学 | Optical fibre with multiple-sector fiber core at periphery of multiple-sector area of circular fiber core, and fabrication method thereof |
| CN102262263B (en) * | 2011-09-01 | 2012-09-05 | 北京交通大学 | Optical fibre with multiple-sector fiber core at periphery of multiple-sector area of circular fiber core, and fabrication method thereof |
| WO2015157980A1 (en) * | 2014-04-17 | 2015-10-22 | 华为技术有限公司 | Optical waveguide and printed circuit board |
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| CN101876773B (en) | 2011-11-09 |
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Granted publication date: 20111109 Termination date: 20121127 |