CN101764340B - Extra-bright single-mold fiber laser with strong-coupled multi-mold rare-earth-doped ring core - Google Patents
Extra-bright single-mold fiber laser with strong-coupled multi-mold rare-earth-doped ring core Download PDFInfo
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Abstract
The invention discloses an extra-bright single-mold fiber laser with a strong-coupled multi-mold rare-earth-doped ring core. The laser comprises a pumping source and an active fiber, wherein the active fiber includes a single-mold rare-earth-doped fiber core (4), a first silicon annular zone (61), a multi-mold rare-earth-doped ring core (2), a second silicon annular zone (62) and an outer coating layer (3) from inside to outside in sequence; the smallest distance between the surface of the single-mold rare-earth-doped fiber core and the internal surface of the multi-mold rare-earth-doped ring core is less than or equal to 5Mum and more than 1Mum; a first raster (51) and a second raster (52) are written in the two ends of the single-mold rare-earth-doped fiber core; or a high-reflecting film (8) corresponding to the laser light wavelength is plated at one end of the active fiber, and the second raster is written in the single-mold rare-earth-doped fiber core at the other end; or the high-reflecting film corresponding to the laser light wavelength is plated at one end of the active fiber, and the first raster and the second raster are written in the two ends of the single-mold rare-earth-doped fiber core. The laser has the strong coupling of the single-mold rare-earth-doped fiber core and the multi-mold rare-earth-doped ring core, thereby realizing high-power and extra-bright output of single-mold laser.
Description
Technical field
The present invention relates to a kind of high-capacity optical fiber laser, particularly a kind of strong-coupled multi is mixed rare earth ring core superbright degree single mode fiber laser.
Background technology
Fiber laser 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.Although realized that in the laboratory single optical fiber output surpasses the single-mode laser of 1kW, and realized that this laser needs strict condition, be difficult to engineering and use; But along with the laser technology application and development, and the development of materials processing, space communication, laser radar, electrooptical countermeasures, laser weapon etc., the laser that needs high power, high-quality, high strength and superbright degree requires the single mode power output to reach MW even GW magnitude.Only adopt the double clad rare earth doped fiber laser of the active fibre core of single mode, because the active fibre core core diameter of single mode is less than 10 μ m, be subjected to the restriction of non-linear, structural factor and diffraction limit, the optical power density of bearing is limited, and single mode Active Optical Fiber laser fibre core continuous wave damaging thresholding is about 1W/ μ m
2[J.Nilsson, J.K.Sahu, Y.Jeong, W.A.Clarkson, R.Selvas, A.B.Grudinin, andS.U.Alam, " High Power Fiber Lasers:New Developments ", Proceedings of SPIEVol.4974,50-59 (2003)], its optical damage danger becomes a major challenge that realizes high-power single mode fiber laser.Except optical damage,, even can finally melt fibre core because the heat that high-power light produces also can be damaged optical fiber.Bibliographical information is arranged, the erbium-ytterbium co-doped fiber laser can produce 100W heat [J.Nilsson for every meter, S.U.Alam, J.A.Alvarez-Chavez, P.W.Turner, W.A.Clarkson, andA.B.Grudinin; " High-power and tunable operation of erbium-ytterbium co-dopedcladding-pumped fiber laser ", IEEE J.Quantum Electron.39,987-994 (2003)].
Limited and for the output single-mode laser power that overcomes existing traditional double covering single mode fiber laser along with the increase of luminous power, its output beam quality variation, the defective of aspects such as heat resistanceheat resistant, Granted publication number: CN100559670C, disclosed " monomode fiber association coupling multimode optical fiber superbright degree single-mode laser " realizing the output of high-power superbright degree single-mode laser, yet single mode is mixed rare earth fibre core and multimode to mix rare earth fibre core two core district coupling amounts very little in this fiber laser.
Summary of the invention
Limited and for the output single-mode laser power that overcomes existing double clad single-mode fiber laser along with the increase of luminous power, its output beam quality variation, the defective of aspects such as heat resistanceheat resistant, and strengthen coupling between existing single-mode core district and the multimode core district, the invention provides a kind of strong-coupled multi and mix rare earth ring core superbright degree single mode fiber laser, to realize high-power superbright degree single-mode laser output.
The objective of the invention is to be achieved through the following technical solutions:
A kind of strong-coupled multi is mixed rare earth ring core superbright degree single mode fiber laser, it comprises pumping source, Active Optical Fiber, and Active Optical Fiber is distributed as from inside to outside successively: single mode is mixed rare earth fibre core, the first silicon annulus, a multimode and is mixed rare earth ring core, the second silicon annulus, surrounding layer.
The refractive index that single mode is mixed the rare earth fibre core equates with the refractive index that multimode is mixed the rare earth ring core.
The refractive index of the first silicon annulus equates with the refractive index of the second silicon annulus or is unequal.
The refractive index of surrounding layer is less than the refractive index of the first silicon annulus; The refractive index of surrounding layer is less than the refractive index of the second silicon annulus.
The refractive index of the refractive index of the first silicon annulus and the second silicon annulus is all mixed the refractive index of rare earth fibre core and the refractive index that multimode is mixed the rare earth ring core less than single mode.
Single mode is mixed rare earth fibre core axis, multimode is mixed rare earth ring core axis and Active Optical Fiber parallel axes.
Single mode is mixed the surperficial minimum range of mixing rare earth ring core inner surface with multimode of rare earth fibre core smaller or equal to 5 μ m, more than or equal to 1 μ m.
On the cross section perpendicular to laser axis, the center of circle that single mode is mixed the rare earth fibre core overlaps with the centroid of section that multimode is mixed the rare earth ring core.
The diameter that single mode is mixed the rare earth fibre core is smaller or equal to 5 μ m.
Single mode is mixed rare earth fibre core two ends and is write first grating and second grating, and single mode is mixed rare earth fibre core, first grating and the second optical grating constitution laser cavity; Or Active Optical Fiber one end plates the highly reflecting films of corresponding optical maser wavelength, and the single mode of the Active Optical Fiber other end is mixed and write second grating in the rare earth fibre core, and single mode is mixed rare earth fibre core, highly reflecting films and the second optical grating constitution laser cavity; Or Active Optical Fiber one end plates the highly reflecting films of corresponding optical maser wavelength, and single mode is mixed rare earth fibre core two ends and write first grating and second grating, and single mode is mixed rare earth fibre core, first grating and the second optical grating constitution laser cavity.
Pumping source comprises first pumping source, or and second pumping source.
The pump mode of first pumping source and second pumping source is end pumping or profile pump or carries out end pumping and profile pump simultaneously.
Single mode is mixed rare earth fibre core and multimode and is mixed the rare-earth ion-doped type of rare earth ring core and comprise that erbium ion, ytterbium ion, holmium ion, thulium ion, erbium and ytterbium codoping ion, neodymium ion, neodymium ytterbium mix ion altogether, and it is identical that single mode is mixed the rare-earth ion-doped type that rare earth fibre core and multimode mix the rare earth ring core.
It is good light sensitive characteristic that single mode is mixed the rare earth fibre core, and multimode is mixed the rare earth ring core for no photosensitive characteristic or the quick characteristic of the low light level.
Beneficial effect of the present invention is specific as follows: described strong-coupled multi mixes rare earth ring core superbright degree single mode fiber laser because single mode is mixed the rare earth fibre core is mixed the rare earth ring core by multimode and center on, have single mode and mix rare earth fibre core and multimode and mix close coupling between the rare earth ring core, realize the high-power superbright degree output of single-mode laser; This laser does not need outside phase modulation apparatus, by inner close coupling, makes multimode mix rare earth ring core resonance on the wavelength that the laser cavity of mixing rare earth fibre core formation with the single mode of grating produces, and realizes that active is phase-locked, thereby realizes single-mode laser superbright degree amplification output.Described strong-coupled multi is mixed rare earth ring core superbright degree single mode fiber laser, because it is big that multimode is mixed rare earth ring core area of dissipation, can export higher power, again since multimode mix the rare earth ring core and be actually a kind of image intensifer, export high hundred times power than the double-clad optical fiber laser that uses single mode to mix the rare earth fibre core separately, simultaneously, because multimode is mixed rare earth ring core resonance on the wavelength that the laser cavity of mixing rare earth fibre core formation with the single mode of grating produces, make this laser can not reduce the quality of output laser, realized the high-power output of single-mode laser superbright degree simultaneously.Single mode is mixed the rare earth fibre core center of circle, multimode is mixed rare earth ring core centroid of section and overlapped, and has realized high efficiency pumping.
Description of drawings
Fig. 1 is that end pumping, single mode are mixed the strong-coupled multi that rare earth fibre core two ends write grating and mixed rare earth ring core superbright degree single mode fiber laser front view.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is that profile pump, an end plate the highly reflecting films of corresponding optical maser wavelength and single mode and mix the multimode that rare earth fibre core two ends write grating and mix rare earth ring core superbright degree single mode fiber laser front view.
Fig. 4 is the B-B profile of Fig. 3.
Fig. 5 mixes the strong-coupled multi that the rare earth fibre core writes grating and mixes rare earth ring core superbright degree single mode fiber laser front view for end pumping and profile pump, an end plate the highly reflecting films of corresponding optical maser wavelength and other end single mode.
Fig. 6 is the C-C profile of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment one
End pumping, single mode are mixed the strong-coupled multi that rare earth fibre core two ends write grating and are mixed rare earth ring core superbright degree single mode fiber laser referring to Fig. 1 and Fig. 2, are described in detail as follows:
This laser comprises first pumping source 1, Active Optical Fiber, and Active Optical Fiber is distributed as from inside to outside successively: single mode is mixed rare earth fibre core 4, the first silicon annulus 61, a multimode and is mixed rare earth ring core 2, the second silicon annulus 62, surrounding layer 3.
Single mode is mixed the rare-earth ion-doped erbium ion that is that rare earth fibre core and multimode are mixed the rare earth ring core.
The refractive index that single mode is mixed rare earth fibre core 4 equates with the refractive index that multimode is mixed rare earth ring core 2.
The refractive index of the first silicon annulus 61 equates with the refractive index of the second silicon annulus 62.
The refractive index of surrounding layer 3 is less than the refractive index of the first silicon annulus 61; The refractive index of surrounding layer 3 is less than the refractive index of the second silicon annulus 62.
The refractive index of the refractive index of the first silicon annulus 61 and the second silicon annulus 62 is all mixed the refractive index of rare earth fibre core 4 and the refractive index that multimode is mixed rare earth ring core 2 less than single mode.
Single mode is mixed rare earth fibre core 4 axis, multimode is mixed rare earth ring core 2 axis and Active Optical Fiber parallel axes.
It is 1 μ m that single mode is mixed the minimum range that rare earth fibre core 4 surface and multimode mix rare earth ring core 2 inner surfaces.
On the cross section perpendicular to laser axis, the center of circle that single mode is mixed rare earth fibre core 4 overlaps with the centroid of section that multimode is mixed rare earth ring core 2.
The diameter that single mode is mixed rare earth fibre core 4 is 5 μ m; It is the circle of 7 μ m for inner surface diameter that multimode is mixed rare earth ring core 2, and outer surface diameter is the annular of the circle of 30 μ m, and the first silicon annulus 61 is the circle of 5 μ m for inner surface diameter, and outer surface diameter is the annular of the circle of 7 μ m; The second silicon annulus 62 is the circle of 30 μ m for inner surface diameter, and outer surface diameter is the annular of the circle of 50 μ m; Surrounding layer 3 is the circle of 50 μ m for inner surface diameter, and outer surface diameter is the annular of the circle of 125 μ m.Active Optical Fiber length is 10m.
Single mode is mixed rare earth fibre core 4 two ends and is write first grating 51 and second grating 52, and single mode is mixed rare earth fibre core 4, first grating 51 and second grating 52 and constituted laser cavity.
Adopt end pumping with 1 pair of Active Optical Fiber of first pumping source, laser is mixed output the rare earth ring core 2 from multimode.
Embodiment two
Profile pump, an end plate the highly reflecting films of corresponding optical maser wavelength and single mode and mix the multimode that rare earth fibre core two ends write grating and mix rare earth ring core superbright degree single mode fiber laser, referring to Fig. 3 and Fig. 4, are described in detail as follows:
This laser comprises first pumping source 1, Active Optical Fiber, and Active Optical Fiber is distributed as from inside to outside successively: single mode is mixed rare earth fibre core 4, the first silicon annulus 61, a multimode and is mixed rare earth ring core 2, the second silicon annulus 62, surrounding layer 3.
Single mode is mixed the rare-earth ion-doped ytterbium ion that is that rare earth fibre core and multimode are mixed the rare earth ring core.
The refractive index that single mode is mixed rare earth fibre core 4 equates with the refractive index that multimode is mixed rare earth ring core 2.
The refractive index of the first silicon annulus 61 is less than the refractive index of the second silicon annulus 62.
The refractive index of surrounding layer 3 is less than the refractive index of the first silicon annulus 61; The refractive index of surrounding layer 3 is less than the refractive index of the second silicon annulus 62.
The refractive index of the refractive index of the first silicon annulus 61 and the second silicon annulus 62 is all mixed the refractive index of rare earth fibre core 4 and the refractive index that multimode is mixed rare earth ring core 2 less than single mode.
Single mode is mixed rare earth fibre core 4 axis, multimode is mixed rare earth ring core 2 axis and Active Optical Fiber parallel axes.
It is 5 μ m that single mode is mixed the minimum range that rare earth fibre core 4 surface and multimode mix rare earth ring core 2 inner surfaces.
On the cross section perpendicular to laser axis, the center of circle that single mode is mixed rare earth fibre core 4 overlaps with the centroid of section that multimode is mixed rare earth ring core 2.
The diameter that single mode is mixed rare earth fibre core 4 is 1 μ m; It is the circle of 11 μ m for inner surface diameter that multimode is mixed rare earth ring core 2, outer surface is major axis total length 180 μ m, the annular of the ellipse of minor axis total length 120 μ m, the first silicon annulus 61 is the circle of 1 μ m for inner surface diameter, outer surface is that diameter is the annular of the circle of 9 μ m; Extramural cladding 62 is that inner surface is major axis total length 180 μ m, the ellipse of minor axis total length 120 μ m, and outer surface diameter is the annular of the circle of 300 μ m; Surrounding layer 3 is that inner surface diameter is 300 μ m, and outer surface diameter is the annular of 600 μ m.Active Optical Fiber length is 5m.
Active Optical Fiber one end plates the highly reflecting films 8 of corresponding optical maser wavelength, and single mode is mixed rare earth fibre core 4 two ends and write first grating 51 and second grating 52; Single mode is mixed rare earth fibre core 4, first grating 51 and second grating 52 and is constituted laser cavity.
Adopt profile pump with 1 pair of Active Optical Fiber of first pumping source, laser is mixed output the rare earth ring core 2 from multimode.
Embodiment three
End pumping and profile pump, an end plate the highly reflecting films of corresponding optical maser wavelength and other end single mode and mix the strong-coupled multi that the rare earth fibre core writes grating and mix rare earth ring core superbright degree single mode fiber laser, referring to Fig. 5 and Fig. 6, are described in detail as follows:
This laser comprises first pumping source 1, second pumping source 12, Active Optical Fiber, and Active Optical Fiber is distributed as from inside to outside successively: single mode is mixed rare earth fibre core 4, the first silicon annulus 61, a multimode and is mixed rare earth ring core 2, the second silicon annulus 62, surrounding layer 3;
Single mode is mixed rare earth fibre core 4 and is mixed ion altogether with the rare-earth ion-doped neodymium ytterbium that is that multimode is mixed rare earth ring core 2.
The refractive index that single mode is mixed rare earth fibre core 4 equates with the refractive index that multimode is mixed rare earth ring core 2;
The refractive index of the first silicon annulus 61 is greater than the refractive index of the second silicon annulus 62;
The refractive index of surrounding layer 3 is less than the refractive index of the first silicon annulus 61; The refractive index of surrounding layer 3 is less than the refractive index of the second silicon annulus 62;
The refractive index of the refractive index of the first silicon annulus 61 and the second silicon annulus 62 is all mixed the refractive index of rare earth fibre core 4 and the refractive index that multimode is mixed rare earth ring core 2 less than single mode;
Single mode is mixed rare earth fibre core 4 axis, multimode is mixed rare earth ring core 2 axis and Active Optical Fiber parallel axes;
It is 4 μ m that single mode is mixed the minimum range that rare earth fibre core 4 surface and multimode mix rare earth ring core 2 inner surfaces;
On the cross section perpendicular to laser axis, the center of circle that single mode is mixed rare earth fibre core 4 overlaps with the centroid of section that multimode is mixed rare earth ring core 2;
The diameter that single mode is mixed rare earth fibre core 4 is 4 μ m; It is that inner surface is the rectangle of 12 μ m * 18 μ m that multimode is mixed rare earth ring core 2, and outer surface is the rectangular annular of the rectangle of 120 μ m * 180 μ m,
The first silicon annulus 61 is circles of inner surface diameter 4 μ m, and outer surface is the annular of the rectangle of 12 μ m * 18 μ m; The second silicon annulus 62 is that inner surface is the rectangle of 120 μ m * 180 μ m, and outer surface is that diameter is the annular of the circle of 300 μ m; Surrounding layer 3 is that inner surface diameter is 300 μ m, and outer surface diameter is 400 μ m annulars.Active Optical Fiber length is 1m.
Active Optical Fiber one end plates the highly reflecting films 8 of corresponding optical maser wavelength, and the single mode of the Active Optical Fiber other end is mixed and write second grating 52 in the rare earth fibre core 4; Single mode is mixed rare earth fibre core 4, highly reflecting films 8 and second grating 52 and is constituted laser cavity.
The pump mode of first pumping source 1 and second pumping source 12 is end pumping or profile pump or carries out end pumping and profile pump simultaneously.
Adopt end pumping with 1 pair of Active Optical Fiber of first pumping source, adopt profile pump with 12 pairs of Active Optical Fibers of second pumping source, laser is mixed output the rare earth ring core 2 from multimode.
Embodiment four
End pumping and profile pump, an end plate the highly reflecting films of corresponding optical maser wavelength and other end single mode and mix the strong-coupled multi that the rare earth fibre core writes grating and mix rare earth ring core superbright degree single mode fiber laser, referring to Fig. 5 and Fig. 6, are described in detail as follows:
This laser comprises first pumping source 1, second pumping source 12, Active Optical Fiber, and Active Optical Fiber is distributed as from inside to outside successively: single mode is mixed rare earth fibre core 4, the first silicon annulus 61, a multimode and is mixed rare earth ring core 2, the second silicon annulus 62, surrounding layer 3;
Single mode is mixed rare earth fibre core and multimode and is mixed the rare-earth ion-doped type of rare earth ring core and comprise that erbium ion, ytterbium ion, holmium ion, thulium ion, erbium and ytterbium codoping ion, neodymium ion, neodymium ytterbium mix ion altogether, and it is identical that single mode is mixed the rare-earth ion-doped type that rare earth fibre core and multimode mix the rare earth ring core.
The refractive index that single mode is mixed rare earth fibre core 4 equates with the refractive index that multimode is mixed rare earth ring core 2;
The refractive index of the first silicon annulus 61 equates with the refractive index of the second silicon annulus 62;
The refractive index of surrounding layer 3 is less than the refractive index of the first silicon annulus 61; The refractive index of surrounding layer 3 is less than the refractive index of the second silicon annulus 62;
The refractive index of the refractive index of the first silicon annulus 61 and the second silicon annulus 62 is all mixed the refractive index of rare earth fibre core 4 and the refractive index that multimode is mixed rare earth ring core 2 less than single mode;
Single mode is mixed rare earth fibre core 4 axis, multimode is mixed rare earth ring core 2 axis and Active Optical Fiber parallel axes;
Single mode is mixed rare earth fibre core 4 outer surfaces and multimode, and to mix the minimum range of rare earth ring core 2 inner surfaces be 4 μ m;
On the cross section perpendicular to laser axis, the center of circle that single mode is mixed rare earth fibre core 4 overlaps with the centroid of section that multimode is mixed rare earth ring core 2;
The diameter that single mode is mixed rare earth fibre core 4 is 4 μ m; It is that inner surface is the rectangle of 12 μ m * 18 μ m that multimode is mixed rare earth ring core 2, and outer surface is the rectangular annular of the rectangle of 120 μ m * 180 μ m,
The first silicon annulus 61 is that inner surface diameter is the circle of 4 μ m, and outer surface is the annular of the rectangle of 12 μ m * 18 μ m; The second silicon annulus 62 is that inner surface is the rectangle of 120 μ m * 180 μ m, and outer surface is that diameter is the annular of the circle of 300 μ m; Surrounding layer 3 is that inner surface diameter is the circle of 300 μ m, and outer surface diameter is the annular of the circle of 400 μ m.Active Optical Fiber length is 50cm.
Active Optical Fiber one end plates the highly reflecting films 8 of corresponding optical maser wavelength, and the single mode of the Active Optical Fiber other end is mixed and write second grating 52 in the rare earth fibre core 4; Single mode is mixed rare earth fibre core 4, highly reflecting films 8 and second grating 52 and is constituted laser cavity.
The pump mode of first pumping source 1 and second pumping source 12 is end pumping or profile pump or carries out end pumping and profile pump simultaneously.
Adopt end pumping with 1 pair of Active Optical Fiber of first pumping source, adopt profile pump with 12 pairs of Active Optical Fibers of second pumping source, laser is mixed output the rare earth ring core 2 from multimode.
Claims (3)
1. a strong-coupled multi is mixed rare earth ring core superbright degree single mode fiber laser, and it comprises pumping source and Active Optical Fiber, it is characterized by:
Active Optical Fiber is distributed as from inside to outside successively: single mode is mixed rare earth fibre core (4), the first silicon annulus (61), a multimode and is mixed rare earth ring core (2), the second silicon annulus (62), surrounding layer (3);
The refractive index that single mode is mixed rare earth fibre core (4) equates with the refractive index that multimode is mixed rare earth ring core (2);
The refractive index of the first silicon annulus (61) equates with the refractive index of the second silicon annulus (62) or is unequal;
The refractive index of surrounding layer (3) is less than the refractive index of the first silicon annulus (61); The refractive index of surrounding layer (3) is less than the refractive index of the second silicon annulus (62);
The refractive index of the refractive index of the first silicon annulus (61) and the second silicon annulus (62) is all mixed the refractive index of rare earth fibre core (4) and the refractive index that multimode is mixed rare earth ring core (2) less than single mode;
Single mode is mixed rare earth fibre core (4) axis, multimode is mixed rare earth ring core (2) axis and Active Optical Fiber parallel axes;
Single mode is mixed the surperficial minimum range of mixing rare earth ring core (2) inner surface with multimode of rare earth fibre core (4) smaller or equal to 5 μ m, more than or equal to 1 μ m;
On the cross section perpendicular to laser axis, the center of circle that single mode is mixed rare earth fibre core (4) overlaps with the centroid of section that multimode is mixed rare earth ring core (2);
The diameter that single mode is mixed rare earth fibre core (4) is smaller or equal to 5 μ m;
Single mode mix rare earth fibre core (4) two ends write first grating (51) and second grating (52) or
Active Optical Fiber one end plates the highly reflecting films (8) of corresponding optical maser wavelength, the single mode of the Active Optical Fiber other end is mixed and is write second grating (52) in the rare earth fibre core (4) or Active Optical Fiber one end plates the highly reflecting films (8) of corresponding optical maser wavelength, and single mode is mixed rare earth fibre core (4) two ends and write first grating (51) and second grating (52);
Pumping source comprises first pumping source (1) and/or second pumping source (12).
2. strong-coupled multi according to claim 1 is mixed rare earth ring core superbright degree single mode fiber laser, it is characterized by: the pump mode of first pumping source (1) and second pumping source (12) is end pumping or profile pump or carries out end pumping and profile pump simultaneously.
3. strong-coupled multi according to claim 1 is mixed rare earth ring core superbright degree single mode fiber laser, it is characterized by: single mode is mixed rare earth fibre core (4) and multimode and is mixed the rare-earth ion-doped type of rare earth ring core (2) and comprise that erbium ion, ytterbium ion, holmium ion, thulium ion, erbium and ytterbium codoping ion, neodymium ion, neodymium ytterbium mix ion altogether, and it is identical that single mode is mixed the rare-earth ion-doped type that rare earth fibre core (4) and multimode mix rare earth ring core (2).
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5689578A (en) * | 1993-02-25 | 1997-11-18 | Fujikura Ltd. | Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler |
| EP1191649A1 (en) * | 1999-05-07 | 2002-03-27 | Mitsubishi Cable Industries, Ltd. | Optical fiber |
| CN1963575A (en) * | 2005-11-08 | 2007-05-16 | 阿尔卡特公司 | Amplifying optical fiber |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5689578A (en) * | 1993-02-25 | 1997-11-18 | Fujikura Ltd. | Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler |
| EP1191649A1 (en) * | 1999-05-07 | 2002-03-27 | Mitsubishi Cable Industries, Ltd. | Optical fiber |
| CN1963575A (en) * | 2005-11-08 | 2007-05-16 | 阿尔卡特公司 | Amplifying optical fiber |
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| Title |
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| JP昭61-107324A 1986.05.24 |
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