WO2006076524A2 - Faisceaux de fibres tronconiques et dispositifs - Google Patents

Faisceaux de fibres tronconiques et dispositifs Download PDF

Info

Publication number
WO2006076524A2
WO2006076524A2 PCT/US2006/001142 US2006001142W WO2006076524A2 WO 2006076524 A2 WO2006076524 A2 WO 2006076524A2 US 2006001142 W US2006001142 W US 2006001142W WO 2006076524 A2 WO2006076524 A2 WO 2006076524A2
Authority
WO
WIPO (PCT)
Prior art keywords
fibers
guiding
cladding
fiber
section
Prior art date
Application number
PCT/US2006/001142
Other languages
English (en)
Other versions
WO2006076524A3 (fr
Inventor
Yong Huang
Qi Zhang
Original Assignee
Comcore Technologies Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comcore Technologies Inc. filed Critical Comcore Technologies Inc.
Publication of WO2006076524A2 publication Critical patent/WO2006076524A2/fr
Publication of WO2006076524A3 publication Critical patent/WO2006076524A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
    • G02B6/2835—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers

Definitions

  • This invention relates to fiber bundles, tapered fiber bundles, and other related optical devices using tapered fiber bundles.
  • Cladding-pumped fiber optic devices have a wide variety of applications.
  • cladding-pumped fiber lasers and amplifiers may be used in various optical communication applications, for example, in long haul and submarine applications.
  • High power cladding-pumped fiber lasers may also be used in non-communication fields, e g , in imaging devices such as printers and scanners, in medical devices, and in material processing,
  • FIG. IA schematically illustrates a conventional cladding-pumped fiber optic device 100, for example, a cladding-pumped fiber amplifier as described in U S. Pat. No. 5,864,644 Device 100 includes a tapered fiber bundle 1 10 spliced to a double- cladding fiber 131 at a transition line 122.
  • Tapered fiber bundle 110 includes a single mode fiber 111 and a pluiality of, e.g., six, multimode fibers 1 12, of which two are shown in FIG IA.
  • Fiber 111 and fibers 112 converge to a bundled region 120, e g., a region between section lines A-A and B-B.
  • Bundled region 120 extends to a tapered region 121, e.g., a region between section lines B-B and C-C.
  • Tapered region 121 has a tapered end at section lines C-C, e.g , immediately to the left of transition line 122, with a diameter comparable to that of double-cladding fiber 131 to which the tapered end is spliced.
  • FIG, IB illustrates a cross-section 140 of tapered fiber bundle 110 at bundled region 120 along section lines B-B, including a cross-section 141 of single mode fiber 111 and cross-sections 142 of six multimode fibers 112 in a tightly packed configuration.
  • FIG. 1C illustrates a cross-section 150 at tapered region 121 along section lines C-C.
  • Cross-section 150 may include a circular core 152 and a circular inner cladding 153.
  • Tapered region 121 may be coated with a layer of low refractive index material, e.g., a polymer 1 composition, thereby to form an outer cladding 151.
  • FIG. ID illustrates a cross-section 160 of double-cladding fiber 131, for example, along section lines D-D.
  • Double-cladding fiber 131 is spliced to tapered fiber bundle 110 at transition line 122, Double-cladding fiber 131 may have a circular core 162, a circular outer -cladding 161, and an inner-cladding 163, e.g., a star-shaped cladding as shown. Double-cladding fiber 131 may be doped with Erbium/Ytterbium (Er/Yb),
  • an optical signal 1 13, i.e., a signal to be amplified, may be received by single mode fiber 11 1.
  • Multiple pump powers 114 may be launched from multiple light sources (not shown), e.g.. lasers, into respective multimode fibers 112.
  • signal 113 may be combined with pump powers 114, and the combined signal and pump powers may be coupled into double-cladding fiber 131, which may produce an amplified output signal 132 corresponding to input signal 1 13.
  • the efficiency at which pump powers 114 are coupled into double-cladding fiber 131 for signal amplification may depend on the degree of matching, at transition line 122, between light spots of tapered fiber bundle 110 and double-cladding fiber 131.
  • the phrase "light spot" as used herein generally refers to an area within the cross-section of a light guiding device where most of the pump powers are concentrated.
  • pump powers may be confined to inner cladding 163 of double-cladding fiber 131, and to inner cladding 153 of tapered fiber bundle 110 at section lines C-C.
  • FIG. ID shows an exemplary double-cladding fiber having a star-shaped inner cladding.
  • double-cladding fibers may generally have other inner cladding shapes, including grossly non-circular claddings.
  • many applications may favor the use of double-cladding fibers having a rectangular inner cladding, e.g., to provide more efficient light guiding properties in certain situations.
  • a conventional tapered fiber bundle has a generally circular 1 cross-sectional shape 150, as shown in FIG, 1C, containing a generally circular inner cladding 153 that cannot be properly matched with a grossly non-circular inner cladding of a double-cladding fiber..
  • double-cladding fibers used with a conventional tapered fiber bundle of the type shown in FIG. IB and 1C are invariably of the generally circular type, i.e., those having a generally circular or nearly circular, e.g., star- shaped, inner cladding, for example, as shown in FIG. ID.
  • a tapered fiber bundle in accordance with exemplary embodiments of the invention may be adapted to have a tapered end having an inner cladding with a non- circular cross-section, e.g., a rectangular cross-section, that closely matches a non- circular inner cladding cross-section of a double-cladding fiber, thereby to increase the efficiency at which light, e.g., pump power, may be coupled from the tapered end into the double-cladding fiber.
  • a non- circular cross-section e.g., a rectangular cross-section
  • the tapered fiber bundle according to embodiments of the invention may have a configuration including guiding and non-guiding fibers that are arranged to produce a cross-section resulting in a light spot of a desired non- circular 1 shape, e.g., a non-circular shape that closely matches a non-circular light spot of a double-cladding fiber.
  • the guiding fibers may include single mode fibers and/or multimode fibers.
  • a tapered fiber bundle may include a bundled region, where one oi more multimode fibers are bundled together with one or more non-guiding fibers.
  • the bundled fibers may be drawn together in a tapeied region.
  • the multimode fibers and non-guiding fibers may be arranged such that a resultant light spot of pump powers emerging from the tapered region has a roughly rectangular shape, with dimensions comparable to those of a light spot of a double-cladding fiber connected to the tapeied region.
  • the fiber bundle may include a single mode fiber, which may be positioned, for example, substantially at the center of the fiber bundle, e.g., to form a core that may couple an optical signal to the core of the double- cladding fiber.
  • a fiber bundle may include three or more rows of multimode fibers and non-guiding fibers, wherein one of the rows, e.g., a center row, may include a guiding fiber, e.g., a single mode fiber.
  • the total number of fibers in the center row may be larger than the total number of fibers in the outer rows, thereby to form an effectively elongated cladding cross- section, e.g., an elliptical or nearly rectangular effective cladding cross-section, which may yield an elongated, e.g., nearly rectangular, light spot,
  • both outer rows may include the same number of non-guiding fibers.
  • the fiber bundle may have more than three rows of fibers and/or the difference in the number of fibers between any two adjacent rows may be relatively small, e.g., one.
  • the higher number of rows and gradual change in the number of fibers may improve the resolution at which the shape of inner cladding at the tapered region may be customized.
  • An optical device may include a double-cladding fiber operatively connected, e.g., fused or spliced, to a tapered region of a tapered fiber bundle as described above.
  • the tapered fiber bundle may include a plurality of multimode fibers and a single mode fiber.
  • the double- cladding fiber may be doped with Erbium/Ytterbium (Er/Yb) and may have a desired non-circular inner cladding cross-section, e.g., a rectangular inner cladding cross- section.
  • the single mode fibei in the tapered fiber bundle may be adapted to receive an optical signal, and guide the signal through the tapered region of the structure.
  • the signal may then be coupled into the core of the double-cladding fiber
  • the multimode fibers may receive respective pump powers, which may be guided through the tapered region of the structure and then coupled into the inner cladding of the double-cladding fiber.
  • the signal may be amplified by the pump poweis.
  • FIG. IA is a simplified illustration of a side view of a conventional cladding- pumped fiber amplifier
  • FIGS IB, 1C, and ID are schematic cross-sectional illustrations of the fiber amplil ⁇ ei shown in FIG. IA along section lines B-B, C-C, and D-D, respectively;
  • FIG, 2A is a simplified illustration of a side view of an light-guiding device that incorporates a tapered fiber bundle connected to a double-cladding fiber according to exemplary embodiments of the invention;
  • FIGS. 2B, 2C, and 2D are schematic cross-sectional illustrations of the light- guiding device shown in FIG. 2A along section lines B-B, C-C, and D-D, respectively;
  • FIG 3 A is a schematic illustration of a cross-section at a bundled region of a tapered fiber bundle according to one exemplary embodiment of the invention;
  • FIG 3B is a schematic illustration of a cross-section at a tapered region of the tapered fiber bundle in FIG. 3A;
  • FlG 4A is a schematic illustration of a cross-section at a bundled region of a tapered fiber bundle accoiding to another exemplary embodiment of the invention;
  • FlG, 4B is a schematic illustration of a cross-section at a tapered region of the tapered fiber bundle in FIG 4A;
  • FIG. 5A is a schematic illustration of a cross-section at a bundled region of a tapered fiber bundle according to a further exemplary embodiment of the invention.
  • FIG. 5B is a schematic illustration of a cross-section at a tapered region of the tapered fiber bundle in FIG 5A
  • fiber is loosely used to refer to any light-guiding structures including, but limited to, single mode fiber, multimode fiber, and planar waveguide as commonly used in integrated optics, unless defined otherwise
  • a “non-guiding” fiber is defined herein as a fiber that does not provide light guiding property in and by itself,
  • FIG. 2A schematically illustrates a light-guiding device 200 in accordance with exemplary embodiments of the invention.
  • Light-guiding device 200 may include a tapered fiber bundle 210 connected, e.g., fusion spliced, to a multi-cladding, e.g., double-cladding, fibei 231 at a transition line 222.
  • Tapered fiber bundle 210 may include a single mode fiber 211 and two multimode fibers 212, and may include one or more non-guiding fibers 243 (FIG. 2B).
  • Single mode fiber 21 L multimode fibers 212, and non-guiding fibers 243 may converge to a bundled region 220, e.g., a region between section lines A-A and B-B.
  • Bundled region 220 may extend to a tapered region 221, e g., a region between section lines B-B and C-C, which may be formed by any desired method, for example, by fusion-based drawing as is known in the art.
  • device 200 shown in FIG. 2 A includes only two multimode fibers 212, the invention is not limited in this respect. It will be appreciated by persons skilled in the art that device 200 may include any number of multimode fibers 212.
  • arrows 213, 214 and 232 represent propagation directions of optical signals and pump powers.
  • light-guiding device 200 may be a bidirectional device wherein light may propagate in either the direction of the a ⁇ ows or the direction opposite to the arrows, and light-guiding device 200 may be used, e.g., in combining and/oi splitting lights.
  • double-cladding fiber 231 may be doped with rare-earth elements, such as Erbium/ Ytterbium (Er/Yb), and light- guiding device 200 may be used for amplifying optical signals.
  • light-guiding device 200 may be a part of another light- guiding device,
  • FIG. 2B schematically illustiates a cross-section 240 of bundled region 220 along section lines B-B (FIG. 2A).
  • Cross-section 240 may include three lows of fibers arranged in a tightly packed configuration, The first and third rows may both include one or more, e g., two, non-guiding fibers 243 and the middle row may include one or more, e.g., two, multimode fibeis 242 and one single mode fiber 24L
  • a non-guiding fiber 243 may be a fiber without cladding and may be designed to have a diameter similar to that of the coie of multimode fibers 242 According to exemplary embodiments of the invention, non-guiding fibers 243 may have a refractive index that is different from, for example, lower than, the core of multimode fibers 242
  • the cladding of multimode fiber 242, in tapered region 221 between section lines B-B and C-C, may be removed. Removing cladding layer of multimode fibers 242
  • FlG 2C schematically illustrates a cross-section 250 at a tapered end of tapered region 221 along section lines C-C, e.g., immediately to the left of transition line 222 (FIG 2A).
  • Tapered region 221 of tapered fiber bundle 210 may be coated with a layer of material, e.g., polymer composition, which has a refractive index comparable to that of non-guiding fiber 243.
  • cross-section 250 may have a reduced cross-sectional area having a circular outer cladding 251, a circular core 252, and an inner cladding 253.
  • Inner cladding 253 may have a shape nearly rectangular.
  • inner cladding 253 may correspond to the layout of multimode fibers 242 in cross-section 240.
  • the tapered end of tapered region 221 may be connected, e g., spliced, to multi-cladding fiber 231.
  • Multi-cladding fiber 231 may be, for example, a double-cladding fiber.
  • FIG. 2D schematically illustrates a cross-section 260 of double-cladding fiber 231 along, for example, section lines D-D * Double-cladding fiber 231 may have a circular core 262, a rectangular inner cladding 263,- and a circular outer cladding 26 L
  • the inner cladding 263 may have a refractive index that is higher than that of outer cladding 261 but lower than that of core 262.
  • an optical signal 213 may be received by single mode fiber 211 for amplification.
  • Pump powers 214 may be launched into two mullimode fibers 232, respectively.
  • Tapered fiber bundle 210 may combine pump powers 214 and couple the combined pump powers into cladding 263 of double- cladding fiber 231 at transition line 222.
  • Signal 213 may be coupled into core 262 of double-cladding fiber 231 through core 252 of tapered fiber bundle 210.
  • Pump powers 214 emerging at transition line 222 of tapered region 221 may have a light spot shape 254 that is similar to the shape of cladding 253- Double- cladding fiber 231 may have a light spot shape 264 that is similar to the shape of cladding 263.
  • the matching in shapes between light spots 254 and 264 as a result of matching shapes between inner claddings 253 and 263, may yield a high coupling efficiency between tapered fiber bundle 210 and double-cladding fiber 231 , Double- cladding fiber 231, which may be doped with Er/Yb and pumped by pump powers 214, may amplify signal 213 and produce a corresponding output signal 232.
  • light spot 254 may correspond to an area, e.g., cladding 253, to which light, e..g., pump powers, may be confined, having a refractive index higher 1 than the refractive index of a surrounding region, e.g., outer cladding 251.
  • shape of cladding 253 may correspond to an area occupied by multimode fibers 242 within cross-section 240 of bundled region 220, as shown in FIG. 2B.
  • the confinement of light, e..g.., pump powers, and therefore the light spot shape at the tapered end of tapered region 221 may be adjusted by appropriately selecting the refractive index of non-guiding fiber 243. It will be appreciated by persons skilled in the art that other shapes of light spot may be realized by selecting proper combination of multimode fibers 242 and non-guiding fibers 243 inside cross-section 240, as shown in FIG. 2B,
  • FIG. 3A schematically illustrates a cross-section 310 at a bundled region
  • FIG. 3B schematically illustrates a cross-section 320 at a tapered end of a tapered region of a tapered fiber bundle in accordance with one exemplary embodiment of the invention.
  • Cross-section 310 may contain three rows of different fibers arranged in a tightly packed configuration.
  • a first row may include two or more non-guiding fibers
  • a second row may include multiple, e.g., three, multimode fibers 311.
  • the second row may have one more fiber than the first row.
  • a third row may include the same number and the same type of non-guiding fibers 312 as the first row,
  • the fiber bundle shown in FIG. 3A may be fused and drawn into a tapered fiber bundle having a fused end with a cross-section 320 as shown in FIG. 3B.
  • Cross- section 320 may have an inner cladding 322 having a roughly rectangular shape and a circular outer cladding 321.
  • the tapered fiber bundle may be optionally coated with a layer of material with refractive index comparable to that of the non-guiding fiber 312, and the layer may be shown in FIG, 3B as part of outer cladding 321.
  • the size and shape of cross-section 320 may be adapted to be comparable to the c ⁇ oss-section of a double-cladding fiber to which the tapered fiber bundle may be connected, e.g., by splicing.
  • cross-section 320 of tapered fibei bundle shown in FIG. 3B may not have a distinct core.
  • cross-section 320 may have a generally rectangular cladding 322 that is similar to cladding 253. It will be appreciated by persons skilled in the art that the size and shape of cladding 322 may roughly correspond to where multimode fibers 31 1 are placed in fiber bundle 310.
  • Cladding 322 may have a relatively high refractive index compared to outer cladding 321, and may therefore yield a light spot shape that closely resembles the light spot in double-cladding fiber 231, whose inner cladding 263 (FIG. 2D) may also have a generally rectangular shape.
  • a tapered fiber bundle made from fiber bundles having cross-sectional shape 310, or cross-sectional shapes 410 and 510 as described below with reference to FIG. 4A and FIG. 5A, respectively, may be suitable for coupling pump powers into a double-cladding fiber in situations where there is no need to also couple a signal into the double-cladding fiber 231.
  • a single mode fiber may be included in the fiber bundle, for example, substantially at the center of the fiber bundle, After being drawn into a tapered fiber bundle, the single mode fiber may form a core to couple signals into a double-cladding fiber for amplification,
  • FIG, 4A schematically illustrates a cross-section 410 at a bundled region
  • FIG.4B schematically illustrates a cross-section 420 at a tapered end of a tapered region of a tapered fiber bundle in accordance with another exemplary embodiment of the invention.
  • Cross-section 410 may include moie than three rows of different fibers arranged in a tightly packed configuration.
  • a first row and a last row of the configuration may both have, e.g., the same number of non-guiding fibers 412, and middle rows of the configuration may each include a plurality of multimode fibers 41 1, although the invention is not limited in this respect
  • the middle rows may have more fibers than the first and the last rows.
  • a middle row in the fiber bundle may have one fiber more or one fiber less than its adjacent rows.
  • the fiber bundle shown in FIG. 4A may be fused and drawn into a tapered fiber bundle having a fused end with a cross-section 420 as shown in FIG. 4B.
  • the tapered fiber bundle may also be optionally coated with a layer of material, shown as part of outer cladding 421 in FIG, 4B, with a refractive index comparable to that of the non-guiding fiber 412.
  • the size and shape of cross-section 420 may be comparable to the cross-section of a double-cladding fiber to which the tapered fiber bundle may be connected, e.g., by splicing.
  • cross-section 420 shown in FIG. 4B may have a roughly rectangular inner cladding 422 having a relatively high refractive index.
  • Cladding 422 may have rounded edges that may resemble the arrangement of multimode fibers 411 in the fiber bundle shown in FIG. 4A,
  • pump powers emerging at cross-section 420 of the tapered end of the tapered fiber bundle may have a light spot that resembles the light spot in double-cladding fiber 231.
  • a high coupling efficiency of pump powers may be achieved between the tapered fiber bundle shown in FIG, 4B and double-cladding fiber 231 of FIG. 2D.
  • FIG. 5 A schematically illustrates a cross-section 510 at a bundled region and FIG. 5B schematically illustrate a cross-section 520 at a tapered end of a tapered region of a tapeied fiber bundle in accordance with a further exemplary embodiment of the invention.
  • Cross-section 510 may have a cross-sectional configuration similar to cross-section 410 shown in FIG 4A, i.e., a first row and a last iow of the configuration including non-guiding fibeis 512 and multiple middle rows of the configuration including multimode fibers 511 Different from cross-section 410 as shown in FIG.
  • cross-section 510 may include one or more non-guiding fibeis 512 at the edges of one oi more middle lows of the configuration, ieplacing multimode fibers 511 , to customize the layout of multimode fibers 51 1 in cross-section 510
  • FIG 5B demonstrates that, by selectively replacing some of multimode fibeis 511 with non-guiding fibers 512 in the fiber bundle, a tapered fiber bundle drawn from the fiber bundle shown in FIG.
  • inner cladding 522 may be formed to have an inner cladding 522 customized to have a desired shape, e.g., of rectangular cross-section Pump powers emerging from inner cladding 522 may have a light spot that may better match a light spot of a double-cladding fibei to which the tapered fiber bundle may be connected, e.g., through splicing.
  • various types of tapered fiber bundles may be configured to include fiber bundles having a combination of single mode fibers, multimode fibers, and non-guiding fibers
  • the fiber bundles may be partially melted and drawn into tapered fiber bundles having a reduced cross-sectional area.
  • the reduced cross-sectional area may have multiple cladding layers.
  • the shape of an inner cladding may be non-circular, and may have any desiied shape to match thai of a double-cladding fiber Io which coupling of pump powers from the tapered fiber bundle may be desired.
  • the non-circular cladding shapes for example, the generally rectangular claddings in the above exemplary embodiments, may have been exaggerated and/or simplified for illustration purposes,

Abstract

Dans certains modes de réalisation, la présente invention a trait à un faisceau de fibres tronconique comportant une ou des fibres non orientées. Dans certains modes de réalisation de l'invention, le faisceau de fibres tronconique est agencé dans une configuration qui permet d'obtenir une gaine présentant une section transversale souhaitée. Dans certains modes de réalisation de l'invention, la section transversale est non circulaire. Dans certains modes de réalisation de l'invention, la section transversale est rectangulaire. Des modes de réalisation de l'invention ont trait à un dispositif optique comportant un faisceau de fibres tronconique épissées à une fibre à double gaine. Dans certains modes de réalisation de l'invention, le dispositif optique est un amplificateur à fibres à pompage de gaine.
PCT/US2006/001142 2005-01-14 2006-01-17 Faisceaux de fibres tronconiques et dispositifs WO2006076524A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64359505P 2005-01-14 2005-01-14
US60/643,595 2005-01-14

Publications (2)

Publication Number Publication Date
WO2006076524A2 true WO2006076524A2 (fr) 2006-07-20
WO2006076524A3 WO2006076524A3 (fr) 2009-04-09

Family

ID=36678204

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/001142 WO2006076524A2 (fr) 2005-01-14 2006-01-17 Faisceaux de fibres tronconiques et dispositifs

Country Status (1)

Country Link
WO (1) WO2006076524A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008010804A (ja) * 2006-05-30 2008-01-17 Fujikura Ltd マルチポートカプラ、光増幅器及びファイバレーザ
WO2009043964A1 (fr) * 2007-10-03 2009-04-09 Optoelectronics Research Centre, Tampere University Of Technology Fibre optique active et son procédé de fabrication
US8351113B2 (en) 2010-09-02 2013-01-08 Textron Systems Corporation High power fiber laser system
CN104280822A (zh) * 2014-10-31 2015-01-14 中国人民解放军国防科学技术大学 大功率弱拉锥低损耗泵浦/信号合束器
US9071033B2 (en) 2012-05-08 2015-06-30 Fianium Ltd. Lasers and amplifiers having tapered elements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5268978A (en) * 1992-12-18 1993-12-07 Polaroid Corporation Optical fiber laser and geometric coupler
US5459804A (en) * 1993-04-06 1995-10-17 Porta Systems Corporation Fiberoptic couplers having spacer fibers that have no optical cores
US5636299A (en) * 1994-12-28 1997-06-03 Lockheed Missiles & Space Company, Inc. Hybrid luminescent device and method for imaging penetrating radiation
US20030118291A1 (en) * 2000-12-14 2003-06-26 Brosnan Stephen J. High brightness laser diode coupling to multimode optical fibers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5268978A (en) * 1992-12-18 1993-12-07 Polaroid Corporation Optical fiber laser and geometric coupler
US5459804A (en) * 1993-04-06 1995-10-17 Porta Systems Corporation Fiberoptic couplers having spacer fibers that have no optical cores
US5636299A (en) * 1994-12-28 1997-06-03 Lockheed Missiles & Space Company, Inc. Hybrid luminescent device and method for imaging penetrating radiation
US20030118291A1 (en) * 2000-12-14 2003-06-26 Brosnan Stephen J. High brightness laser diode coupling to multimode optical fibers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008010804A (ja) * 2006-05-30 2008-01-17 Fujikura Ltd マルチポートカプラ、光増幅器及びファイバレーザ
EP1862830A3 (fr) * 2006-05-30 2008-06-25 Fujikura, Ltd. Coupleur multi-port, amplificateur optique, et laser à fibres
US7492993B2 (en) 2006-05-30 2009-02-17 Fujikura Ltd. Multi-port coupler, optical amplifier, and fiber laser
WO2009043964A1 (fr) * 2007-10-03 2009-04-09 Optoelectronics Research Centre, Tampere University Of Technology Fibre optique active et son procédé de fabrication
US8351113B2 (en) 2010-09-02 2013-01-08 Textron Systems Corporation High power fiber laser system
US9071033B2 (en) 2012-05-08 2015-06-30 Fianium Ltd. Lasers and amplifiers having tapered elements
US9722389B2 (en) 2012-05-08 2017-08-01 Nkt Photonics A/S Fiber laser having optical resonator comprising tapered element
CN104280822A (zh) * 2014-10-31 2015-01-14 中国人民解放军国防科学技术大学 大功率弱拉锥低损耗泵浦/信号合束器
CN104280822B (zh) * 2014-10-31 2015-08-05 中国人民解放军国防科学技术大学 大功率弱拉锥低损耗泵浦/信号合束器

Also Published As

Publication number Publication date
WO2006076524A3 (fr) 2009-04-09

Similar Documents

Publication Publication Date Title
US10761271B2 (en) Polarization maintaining optical fiber array
US11573365B2 (en) Microstructured multicore optical fibre (MMOF), a device and the fabrication method of a device for independent addressing of the cores of microstructured multicore optical fibre
US6434295B1 (en) Side coupled pumping of double clad fiber gain media
EP2033277B1 (fr) Dispositif pour coupler un rayonnement dans une fibre optique ou hors de celle-ci
EP2791719B1 (fr) Amplificateur multic ur à fibre dopée à l'erbium
US6823117B2 (en) Mode multiplexing optical coupling device
US8712199B2 (en) Configurable pitch reducing optical fiber array
US8472765B2 (en) Fiber based laser combiners
EP2548056B1 (fr) Fibres de transmission et d'amplification multicoeur, et schemas pour le lancement d'une lumiere de pompage vers les coeurs d'un amplificateur
EP1639679B1 (fr) Appareil optique
US20110280517A1 (en) Techniques and devices for low-loss, modefield matched coupling to a multicore fiber
US8818151B1 (en) Fiber Pump Signal Combiner
WO2014132990A1 (fr) Structure de faisceau en fibre optique, fibre à cœurs multiples dopés aux terres rares, structure de connexion correspondante, procédé pour exciter des fibres à cœurs multiples dopés aux terres rares, et amplificateur à fibre optique à cœurs multiples
US20050207455A1 (en) Method and apparatus for efficient coupling of pump light into fiber amplifiers
WO2006135433A3 (fr) Fibre optique double-gaine mono-polarisee dopee aux terres rares avec pluralite de trous d'air
CN109445034B (zh) 少模波分复用耦合器
US9211681B2 (en) Fiber Based Laser Combiners
JP2008009390A (ja) 信号光及び励起光導光用ファイバ、ファイババンドル及びそれらの製造方法、ファイバアンプ及びファイバレーザ
AU745597B2 (en) Twin coupler with mode scrambling for multimode pumping of optical amplifiers
WO2006076524A2 (fr) Faisceaux de fibres tronconiques et dispositifs
EP2778727B1 (fr) Combineur de bague
WO2009080039A1 (fr) Combinateur optique et son procédé de production
US9768581B2 (en) Pump and signal combiner for high numerical aperture use
US9322993B1 (en) All pump combiner with cladless inputs
JP5173137B2 (ja) ダブルクラッドファイバ、結合構造、ファイバアンプ及びファイバレーザ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06718237

Country of ref document: EP

Kind code of ref document: A2