DE69621779T2 - Faser zur verminderung von polarisationseffekten in verstärkern - Google Patents
Faser zur verminderung von polarisationseffekten in verstärkernInfo
- Publication number
- DE69621779T2 DE69621779T2 DE69621779T DE69621779T DE69621779T2 DE 69621779 T2 DE69621779 T2 DE 69621779T2 DE 69621779 T DE69621779 T DE 69621779T DE 69621779 T DE69621779 T DE 69621779T DE 69621779 T2 DE69621779 T2 DE 69621779T2
- Authority
- DE
- Germany
- Prior art keywords
- amplifiers
- fiber
- polarization effects
- reducing polarization
- reducing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/105—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type having optical polarisation effects
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
- C03B37/02745—Fibres having rotational spin around the central longitudinal axis, e.g. alternating +/- spin to reduce polarisation mode dispersion
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
- C03B37/032—Drawing means, e.g. drawing drums ; Traction or tensioning devices for glass optical fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/106—Single coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
- C03B2201/34—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with rare earth metals, i.e. with Sc, Y or lanthanides, e.g. for laser-amplifiers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/22—Radial profile of refractive index, composition or softening point
- C03B2203/24—Single mode [SM or monomode]
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/36—Dispersion modified fibres, e.g. wavelength or polarisation shifted, flattened or compensating fibres (DSF, DFF, DCF)
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/06—Rotating the fibre fibre about its longitudinal axis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Lasers (AREA)
- Glass Compositions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/575,495 US5704960A (en) | 1995-12-20 | 1995-12-20 | Method of forming an optical fiber for reduced polarization effects in amplifiers |
PCT/US1996/019813 WO1997022897A1 (en) | 1995-12-20 | 1996-12-11 | Fiber for reduced polarization effects in amplifiers |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69621779D1 DE69621779D1 (de) | 2002-07-18 |
DE69621779T2 true DE69621779T2 (de) | 2003-01-02 |
Family
ID=24300546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69621779T Expired - Fee Related DE69621779T2 (de) | 1995-12-20 | 1996-12-11 | Faser zur verminderung von polarisationseffekten in verstärkern |
Country Status (9)
Country | Link |
---|---|
US (2) | US5704960A (de) |
EP (1) | EP0811176B1 (de) |
JP (1) | JPH11501133A (de) |
KR (1) | KR19980702330A (de) |
CN (1) | CN1176005A (de) |
AU (1) | AU705950B2 (de) |
CA (1) | CA2210470A1 (de) |
DE (1) | DE69621779T2 (de) |
WO (1) | WO1997022897A1 (de) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5778016A (en) | 1994-04-01 | 1998-07-07 | Imra America, Inc. | Scanning temporal ultrafast delay methods and apparatuses therefor |
WO1997007067A1 (en) * | 1995-08-16 | 1997-02-27 | Plasma Optical Fibre B.V. | Optical fiber with low polarisation mode dispersion |
US5704960A (en) * | 1995-12-20 | 1998-01-06 | Corning, Inc. | Method of forming an optical fiber for reduced polarization effects in amplifiers |
WO1997026221A1 (en) * | 1996-01-22 | 1997-07-24 | Corning Incorporated | Optical fiberof modulated spin for reduced polarisation mode dispersion as well as process and apparatus for its manufacture |
US6324872B1 (en) | 1996-04-12 | 2001-12-04 | Corning Incorporated | Method and apparatus for introducing controlled spin in optical fibers |
CA2267913A1 (en) * | 1996-10-07 | 1998-04-16 | Corning Incorporated | Sensor apparatus with polarization maintaining fibers |
US6839473B2 (en) * | 1997-06-16 | 2005-01-04 | Novera Optics, Inc. | Optical fiber cladding with low polarization dependence and an acousto-optic tunable filter with low polarization dependent loss achieved through thermal annealing |
US6922495B2 (en) * | 1997-06-16 | 2005-07-26 | Novera Optics, Inc. | Optical fiber cladding with low polarization-dependent coupling |
DE19810812A1 (de) * | 1998-03-12 | 1999-09-16 | Siemens Ag | Optisches Übertragungselement sowie Verfahren zur Reduzierung dessen Polarisationsmoden-Dispersion |
AU757117B2 (en) * | 1998-06-24 | 2003-02-06 | Pirelli Cavi E Sistemi S.P.A. | Method and apparatus for twisting a coated optical fiber during drawing from a preform |
KR20010071612A (ko) | 1998-06-24 | 2001-07-28 | 지아네시 피에르 지오반니 | 원석으로부터 광섬유를 제조하기 위한 장치 및 방법 |
DE19841068A1 (de) * | 1998-09-09 | 2000-03-16 | Deutsche Telekom Ag | Optische Verbindungsstrecke |
US6891622B2 (en) | 1999-02-11 | 2005-05-10 | Kvh Industries, Inc. | Current sensor |
JP4718017B2 (ja) * | 1999-04-26 | 2011-07-06 | コーニング インコーポレイテッド | 光ファイバ、ならびに低偏光モード分散および低減衰損失の光ファイバの製造方法 |
JP4076702B2 (ja) | 1999-05-14 | 2008-04-16 | 株式会社フジクラ | 光ファイバの捻れ測定方法 |
EP1297371B1 (de) * | 2000-07-06 | 2006-09-13 | Prysmian Cavi e Sistemi Energia S.r.l. | Optische faser mit geringer polarisationsmodendispersion und zugehöriges herstellungsverfahren |
WO2002010813A2 (en) * | 2000-08-02 | 2002-02-07 | Kvh Industries, Inc. | Reduction of linear birefringence in circular-core single-mode fiber |
WO2002053117A2 (en) * | 2000-12-28 | 2002-07-11 | Pirelli S.P.A. | Method for producing an optical fibre telecommunications cable with reduced polarization mode dispersion |
WO2002063354A1 (fr) * | 2001-01-30 | 2002-08-15 | Sumitomo Electric Industries, Ltd. | Procede et dispositif de fabrication de fibre optique |
US6724528B2 (en) * | 2001-02-27 | 2004-04-20 | The United States Of America As Represented By The Secretary Of The Navy | Polarization-maintaining optical fiber amplifier employing externally applied stress-induced birefringence |
DE60227356D1 (de) * | 2001-03-14 | 2008-08-14 | Chiral Photonics Inc | Chirales faser-bragg-gitter |
US20020172461A1 (en) * | 2001-03-14 | 2002-11-21 | Jonathan Singer | Apparatus and method for fabricating chiral fiber gratings |
KR100414691B1 (ko) * | 2001-07-19 | 2004-01-13 | 엘지전선 주식회사 | 낮은 편광 모드 분산을 지닌 뒤틀린 광섬유의 제조 장치 |
US6825974B2 (en) * | 2001-11-06 | 2004-11-30 | Sandia National Laboratories | Linearly polarized fiber amplifier |
KR100417000B1 (ko) * | 2001-12-03 | 2004-02-05 | 삼성전자주식회사 | 저 편광 모드 분산을 위한 장치 |
US6735985B2 (en) * | 2001-12-20 | 2004-05-18 | Furukawa Electric North America Inc | Method of impressing a twist on a multimode fiber during drawing |
KR100416970B1 (ko) * | 2002-01-17 | 2004-02-05 | 삼성전자주식회사 | 인출된 광섬유의 저 편광모드분산을 위한 스핀 장치 |
US7010195B2 (en) | 2002-03-15 | 2006-03-07 | Fitel Usa Corp. | Fiber optic grating with tunable polarization dependent loss |
US20040062515A1 (en) * | 2002-09-26 | 2004-04-01 | Garner Harry Douglas | Apparatuses and methods for imparting mechanical twist in optical fibers |
US7035525B2 (en) * | 2002-09-26 | 2006-04-25 | Fitel Usa Corp. | Methods and apparatuses for correcting mechanical twist in optical fiber |
KR100520646B1 (ko) * | 2002-10-02 | 2005-10-13 | 삼성전자주식회사 | 꼬임 진폭 비대칭 제어를 이용한 광섬유 인출 방법 |
KR100498925B1 (ko) * | 2002-10-23 | 2005-07-04 | 삼성전자주식회사 | 스핀 진폭 변조를 이용한 광섬유 인출 방법 |
US6778715B2 (en) * | 2002-11-06 | 2004-08-17 | Fitel U.S.A. Corp. | Optical fiber-based device with tunable birefringence |
US7891216B2 (en) * | 2002-12-30 | 2011-02-22 | Prysmian Cavi E Sistemi Energia S.R.L. | Method for producing an optical fiber having low polarization mode dispersion |
US7861556B2 (en) * | 2003-02-28 | 2011-01-04 | Corning Incorporated | Method and apparatus for impulsively spinning optical fiber |
US6876804B2 (en) * | 2003-03-20 | 2005-04-05 | Corning Incorporated | Method of making a spun optical fiber with low polarization mode dispersion |
KR100547755B1 (ko) * | 2003-05-24 | 2006-01-31 | 삼성전자주식회사 | 스핀을 이용한 광섬유 제조 장치 및 방법 |
US6993229B2 (en) * | 2003-09-30 | 2006-01-31 | Corning Incorporated | Method of making spun optical fiber with low PMD |
EP1706766B1 (de) * | 2003-12-30 | 2009-04-22 | Prysmian S.p.A. | Optische faserverbindung mit niedriger polarisationsmodendispersion (pmd) und herstellungsverfahren dafür |
KR100566218B1 (ko) * | 2004-03-02 | 2006-03-29 | 삼성전자주식회사 | 광섬유 인출을 위한 장치 및 방법 |
WO2005100274A1 (ja) * | 2004-04-07 | 2005-10-27 | Fujikura Ltd. | 光ファイバの製造方法、光ファイバ |
RU2369604C2 (ru) | 2004-04-13 | 2009-10-10 | Инсайт Корпорейшн | Производные пиперазинилпиперидина в качестве антагонистов хемокинового рецептора |
US7317855B2 (en) * | 2004-12-16 | 2008-01-08 | Corning Incorporated | Method of imparting twist to optical fiber |
JP2007272060A (ja) * | 2006-03-31 | 2007-10-18 | Furukawa Electric Co Ltd:The | 光ファイバリボン芯線及び光ファイバケーブル |
CN101512404B (zh) * | 2007-08-22 | 2012-10-10 | 古河电气工业株式会社 | 光纤带状芯线 |
WO2009107667A1 (ja) * | 2008-02-28 | 2009-09-03 | 住友電気工業株式会社 | 光ファイバ |
DK2341377T3 (da) * | 2008-10-20 | 2017-11-13 | Sumitomo Electric Industries | Fremgangsmåde til fremstilling af optisk fiber |
DK2370442T5 (da) | 2008-11-26 | 2013-09-23 | Pfizer | 3-aminocyclopentancarboxamider som chemokinreceptor modulatorer |
US8923678B2 (en) * | 2009-12-02 | 2014-12-30 | Ofs Fitel, Llc | Techniques for manipulating crosstalk in multicore fibers |
US20110265520A1 (en) * | 2010-04-28 | 2011-11-03 | Xin Chen | Methods For Determining The Rotational Characteristics Of An Optical Fiber |
KR101218312B1 (ko) * | 2010-07-22 | 2013-01-02 | 한국광기술원 | 자이로 센서용 광섬유 코일, 그 제작 장치 및 이를 이용한 자이로 센서 |
FR2967155B1 (fr) * | 2010-11-08 | 2017-12-15 | Delachaux Sa | Dispositif de guidage de fibre optique ameliore |
JP5948136B2 (ja) * | 2011-05-27 | 2016-07-06 | 株式会社フジクラ | 光ファイバおよびその製造方法 |
KR101968846B1 (ko) * | 2017-11-29 | 2019-04-12 | 한국광기술원 | 수모드 광섬유를 이용한 소형 무편광기 |
BR112022015066A2 (pt) * | 2020-01-29 | 2022-11-08 | Ampliconyx Oy | Fibra óptica ativa com birrefringência baixa |
CN114180823B (zh) * | 2022-02-14 | 2022-05-20 | 武汉长进激光技术有限公司 | 抗辐照超宽带L-band掺铒光纤及其制备方法和应用 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3912478A (en) * | 1974-06-17 | 1975-10-14 | Bell Telephone Labor Inc | Methods of introducing geometrical variations in optical fibers |
US4038062A (en) * | 1976-03-25 | 1977-07-26 | Bell Telephone Laboratories, Incorporated | Method and apparatus for introducing geometrical perturbations in optical fiber waveguides |
US4291940A (en) * | 1977-06-13 | 1981-09-29 | Canadian Patents & Development Ltd. | Low loss access coupler for multimode optical fiber distribution systems |
US4274854A (en) * | 1978-01-13 | 1981-06-23 | Bell Telephone Laboratories, Incorporated | Polarization-preserving optical fiber |
US4308045A (en) * | 1978-03-10 | 1981-12-29 | Bell Telephone Laboratories, Incorporated | Method for fabricating optical fibers with enhanced mode coupling |
US4184859A (en) * | 1978-06-09 | 1980-01-22 | International Telephone And Telegraph Corporation | Method of fabricating an elliptical core single mode fiber |
US4426129A (en) * | 1980-01-11 | 1984-01-17 | Hitachi, Ltd. | Optical fiber and method of producing the same |
EP0067017B1 (de) * | 1981-05-29 | 1987-03-04 | Hitachi, Ltd. | Die Polarisationsebene beibehaltende optische Faser und Verfahren zu ihrer Herstellung |
GB2101762B (en) * | 1981-07-07 | 1984-11-28 | Central Electr Generat Board | Optic fibre |
FR2515632A1 (fr) * | 1981-11-03 | 1983-05-06 | Thomson Csf | Procede d'obtention d'un objet a structure chiralique issu de l'etirage a partir d'une source de matiere ramollie, et dispositif mettant en oeuvre ce procede |
US4669814A (en) * | 1982-08-02 | 1987-06-02 | Andrew Corporation | Single mode, single polarization optical fiber with accessible guiding region and method of forming directional coupler using same |
US4668264A (en) * | 1982-08-02 | 1987-05-26 | Andrew Corporation | Method for making self-aligning optical fiber with accessible guiding region |
JPS5969438A (ja) * | 1982-10-15 | 1984-04-19 | Hitachi Ltd | 光フアイバ母材の製造方法 |
US4606605A (en) * | 1984-06-29 | 1986-08-19 | At&T Bell Laboratories | Optical fiber having in-line polarization filter |
GB2170920B (en) * | 1985-02-12 | 1988-09-07 | Stc Plc | Beam splitter/combers |
US4859223A (en) * | 1987-06-15 | 1989-08-22 | Hitachi Cable Limited | Method of manufacturing polarization-maintaining optical fibers |
DE3720028A1 (de) * | 1987-06-16 | 1988-12-29 | Philips Patentverwaltung | Verfahren zur herstellung von lichtleitfasern |
GB2239983A (en) * | 1989-12-22 | 1991-07-17 | Univ Southampton | Optical fibre laser |
DE4212602A1 (de) * | 1992-04-15 | 1993-10-21 | Sel Alcatel Ag | Lichtwellenleiter sowie Verfahren und Vorrichtung zu seiner Herstellung |
US5298047A (en) * | 1992-08-03 | 1994-03-29 | At&T Bell Laboratories | Method of making a fiber having low polarization mode dispersion due to a permanent spin |
US5309530A (en) * | 1993-04-30 | 1994-05-03 | At&T Bell Laboratories | Technique utilizing stress-induced birefringence for reducing polarization dependent hole-burning in an amplified optical transmission system |
US5327516A (en) * | 1993-05-28 | 1994-07-05 | At&T Bell Laboratories | Optical fiber for wavelength division multiplexing |
AU670505B2 (en) * | 1993-06-22 | 1996-07-18 | Sumitomo Electric Industries, Ltd. | Optical fiber preform, optical fiber and their manufacturing methods |
JP3860237B2 (ja) * | 1995-07-26 | 2006-12-20 | 富士通株式会社 | 偏波分散の抑圧特性を持つ光ファイバ及びその製造方法 |
US5704960A (en) * | 1995-12-20 | 1998-01-06 | Corning, Inc. | Method of forming an optical fiber for reduced polarization effects in amplifiers |
-
1995
- 1995-12-20 US US08/575,495 patent/US5704960A/en not_active Expired - Lifetime
-
1996
- 1996-12-11 JP JP9522907A patent/JPH11501133A/ja active Pending
- 1996-12-11 AU AU12880/97A patent/AU705950B2/en not_active Ceased
- 1996-12-11 KR KR1019970705727A patent/KR19980702330A/ko not_active Application Discontinuation
- 1996-12-11 WO PCT/US1996/019813 patent/WO1997022897A1/en not_active Application Discontinuation
- 1996-12-11 DE DE69621779T patent/DE69621779T2/de not_active Expired - Fee Related
- 1996-12-11 EP EP96943722A patent/EP0811176B1/de not_active Expired - Lifetime
- 1996-12-11 CA CA002210470A patent/CA2210470A1/en not_active Abandoned
- 1996-12-11 CN CN96192004A patent/CN1176005A/zh active Pending
-
1997
- 1997-09-25 US US08/937,943 patent/US5822487A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0811176A1 (de) | 1997-12-10 |
CN1176005A (zh) | 1998-03-11 |
KR19980702330A (ko) | 1998-07-15 |
DE69621779D1 (de) | 2002-07-18 |
EP0811176A4 (de) | 1999-02-03 |
EP0811176B1 (de) | 2002-06-12 |
CA2210470A1 (en) | 1997-06-26 |
AU1288097A (en) | 1997-07-14 |
JPH11501133A (ja) | 1999-01-26 |
US5822487A (en) | 1998-10-13 |
US5704960A (en) | 1998-01-06 |
AU705950B2 (en) | 1999-06-03 |
WO1997022897A1 (en) | 1997-06-26 |
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