DE69631895D1 - Vorrichtung und verfahren zum seitlichen pumpen einer optischen faser - Google Patents
Vorrichtung und verfahren zum seitlichen pumpen einer optischen faserInfo
- Publication number
- DE69631895D1 DE69631895D1 DE69631895T DE69631895T DE69631895D1 DE 69631895 D1 DE69631895 D1 DE 69631895D1 DE 69631895 T DE69631895 T DE 69631895T DE 69631895 T DE69631895 T DE 69631895T DE 69631895 D1 DE69631895 D1 DE 69631895D1
- Authority
- DE
- Germany
- Prior art keywords
- optical fiber
- side pumping
- pumping
- fiber
- optical
- 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
- 238000000034 method Methods 0.000 title 1
- 239000013307 optical fiber Substances 0.000 title 1
- 238000005086 pumping Methods 0.000 title 1
Classifications
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
-
- 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
- G02B6/2817—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 reflective elements to split or combine optical signals
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- 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
-
- 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
- G02B6/2852—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 tapping light guides arranged sidewardly, e.g. in a non-parallel relationship with respect to the bus light guides (light extraction or launching through cladding, with or without surface discontinuities, bent structures)
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094069—Multi-mode pumping
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Lasers (AREA)
- Optical Couplings Of Light Guides (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US568859 | 1984-01-06 | ||
US08/568,859 US5854865A (en) | 1995-12-07 | 1995-12-07 | Method and apparatus for side pumping an optical fiber |
PCT/US1996/019452 WO1997021124A1 (en) | 1995-12-07 | 1996-12-09 | Method and apparatus for side pumping an optical fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69631895D1 true DE69631895D1 (de) | 2004-04-22 |
DE69631895T2 DE69631895T2 (de) | 2004-09-09 |
Family
ID=24273023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69631895T Expired - Fee Related DE69631895T2 (de) | 1995-12-07 | 1996-12-09 | Vorrichtung und verfahren zum seitlichen pumpen einer optischen faser |
Country Status (6)
Country | Link |
---|---|
US (1) | US5854865A (de) |
EP (1) | EP0865620B1 (de) |
JP (2) | JP2000502193A (de) |
AU (1) | AU725785B2 (de) |
DE (1) | DE69631895T2 (de) |
WO (1) | WO1997021124A1 (de) |
Families Citing this family (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6477295B1 (en) | 1997-01-16 | 2002-11-05 | Jds Uniphase Corporation | Pump coupling of double clad fibers |
US7576909B2 (en) | 1998-07-16 | 2009-08-18 | Imra America, Inc. | Multimode amplifier for amplifying single mode light |
US7656578B2 (en) | 1997-03-21 | 2010-02-02 | Imra America, Inc. | Microchip-Yb fiber hybrid optical amplifier for micro-machining and marking |
WO2005022705A2 (en) | 1997-03-21 | 2005-03-10 | Imra America, Inc. | High energy optical fiber amplifier for picosecond-nanosecond pulses for advanced material processing applications |
US6275512B1 (en) * | 1998-11-25 | 2001-08-14 | Imra America, Inc. | Mode-locked multimode fiber laser pulse source |
FR2789813B1 (fr) * | 1999-02-15 | 2001-10-05 | Cit Alcatel | Amplificateur optique |
US6370297B1 (en) * | 1999-03-31 | 2002-04-09 | Massachusetts Institute Of Technology | Side pumped optical amplifiers and lasers |
US6243515B1 (en) * | 1999-06-18 | 2001-06-05 | Trw Inc. | Apparatus for optically pumping an optical fiber from the side |
FR2803047B1 (fr) * | 1999-12-23 | 2002-07-19 | Opticom Innovation | Composant hybride d'optocouplage |
US6757467B1 (en) * | 2000-07-25 | 2004-06-29 | Optical Air Data Systems, Lp | Optical fiber system |
US6594420B1 (en) | 2000-07-28 | 2003-07-15 | Harris Corporation | Multi-fiber ribbon form factor-compliant, integrated multi-channel optical amplifier |
AU2002211308A1 (en) * | 2000-09-27 | 2002-04-08 | Hrl Laboratories, Llc | Compact side-pumped fiber |
US6608951B1 (en) * | 2000-11-28 | 2003-08-19 | Lew Goldberg | Optical fiber amplifiers and lasers and optical pumping device therefor |
US6603791B2 (en) | 2000-12-12 | 2003-08-05 | Keopsys, Inc. | High power fiber amplifiers with passive pump module alignment |
US6625354B2 (en) | 2000-12-19 | 2003-09-23 | The Boeing Company | Fiber amplifier having a prism for efficient coupling of pump energy |
DE20021834U1 (de) * | 2000-12-22 | 2001-03-15 | Schleifring und Apparatebau GmbH, 82256 Fürstenfeldbruck | Vorrichtung zur Lichteinkopplung in eine lichtleitende Schicht innerhalb einer hybrid aufgebauten elektrisch-optischen Leiterplatte |
US6529657B2 (en) | 2001-02-23 | 2003-03-04 | Keopsys, Inc. | Angle selective side-pumping of fiber amplifiers and lasers |
US20020172459A1 (en) * | 2001-03-16 | 2002-11-21 | Bailey Timothy J. | Method and apparatus for coupling light into an optical waveguide |
US6766075B1 (en) * | 2001-05-11 | 2004-07-20 | Pc Photonics Corporation | Side pumping of optical fiber systems via multiple delivery fibers |
US6717720B2 (en) * | 2001-06-06 | 2004-04-06 | Keopsys, Inc. | Hermetic pump module for double cladding fiber amplifiers and method for making same |
US6704479B2 (en) * | 2001-07-24 | 2004-03-09 | The United States Of America As Represented By The Secretary Of The Navy | Method for coupling light into cladding-pumped fiber sources using an embedded mirror |
US6529318B1 (en) | 2001-08-30 | 2003-03-04 | Np Photonics, Inc. | Total internal reflection (TIR) coupler and method for side-coupling pump light into a fiber |
US6778319B2 (en) | 2001-09-10 | 2004-08-17 | Np Photonics, Inc. | Side-pumped multi-port optical amplifier and method of manufacture using fiber drawing technologies |
US6744947B2 (en) * | 2001-09-28 | 2004-06-01 | The United States Of America As Represented By The Secretary Of The Navy | High power, low noise, fluorescent device and methods related thereto |
US6975792B1 (en) * | 2001-11-09 | 2005-12-13 | Keopsys, Inc. | Method and apparatus for coupling light into a waveguide using a slit |
US6763042B2 (en) | 2001-12-14 | 2004-07-13 | Evans & Sutherland Computer Corporation | Apparatus and method for frequency conversion and mixing of laser light |
DE60328465D1 (de) * | 2002-03-15 | 2009-09-03 | Crystal Fibre As | Mikrostrukturierte optische faser mit mantelungsaussparung, verfahren zu ihrer herstellung und vorrichtung damit |
US7184669B2 (en) * | 2002-04-26 | 2007-02-27 | Avago Technologies Fiber Ip (Singapore) Pte. Ltd. | Optical transceiver systems and methods |
US6975791B2 (en) * | 2002-07-25 | 2005-12-13 | Ceramoptec Industries, Inc. | Fiber laser pumping device |
US6668112B1 (en) | 2002-09-25 | 2003-12-23 | Np Photonics, Inc. | Multimode laser diode and side-coupled fiber package |
DK1586145T3 (da) * | 2003-01-24 | 2006-06-26 | Trumpf Inc | Sidepumpet fiberlaser |
US6795611B2 (en) * | 2003-01-29 | 2004-09-21 | Institut National D'optique | Light coupling between a light source and an optical waveguide |
US7257302B2 (en) * | 2003-06-03 | 2007-08-14 | Imra America, Inc. | In-line, high energy fiber chirped pulse amplification system |
US7414780B2 (en) | 2003-06-30 | 2008-08-19 | Imra America, Inc. | All-fiber chirped pulse amplification systems |
US20050024716A1 (en) * | 2003-07-15 | 2005-02-03 | Johan Nilsson | Optical device with immediate gain for brightness enhancement of optical pulses |
US7016573B2 (en) * | 2003-11-13 | 2006-03-21 | Imra America, Inc. | Optical fiber pump multiplexer |
US20050169324A1 (en) * | 2004-01-30 | 2005-08-04 | Ilday Fatih O. | Self-similar laser oscillator |
US7711013B2 (en) * | 2004-03-31 | 2010-05-04 | Imra America, Inc. | Modular fiber-based chirped pulse amplification system |
US7437033B1 (en) | 2004-05-24 | 2008-10-14 | Hrl Laboratories, Llc | Apparatus and method for pumping optical fiber |
FI125571B (en) | 2005-02-23 | 2015-11-30 | Liekki Oy | A bundle of optical fibers and a process for making it |
FI120471B (fi) * | 2005-02-23 | 2009-10-30 | Liekki Oy | Optisen kuidun käsittelymenetelmä |
US7809222B2 (en) * | 2005-10-17 | 2010-10-05 | Imra America, Inc. | Laser based frequency standards and their applications |
US7282690B2 (en) * | 2005-12-22 | 2007-10-16 | Itt Manufacturing Enterprises, Inc. | Display of indicator lights in night vision devices using fiber optic screen |
US7559706B2 (en) * | 2006-02-22 | 2009-07-14 | Liekki Oy | Light amplifying fiber arrangement |
EP2763247A3 (de) | 2006-05-11 | 2014-09-17 | SPI Lasers UK Limited | Vorrichtung zur Abgabe einer optischen Strahlung |
WO2008073449A2 (en) | 2006-12-12 | 2008-06-19 | Evans & Sutherland Computer Corporation | System and method for aligning rgb light in a single modulator projector |
JP2009128371A (ja) | 2007-11-19 | 2009-06-11 | Fujikura Ltd | マルチモード光カプラ |
WO2009077636A1 (en) * | 2007-12-14 | 2009-06-25 | Corelase Oy | Means of coupling light into optical fibers and methods of manufacturing a coupler |
US8199398B2 (en) * | 2008-02-07 | 2012-06-12 | Imra America, Inc. | High power parallel fiber arrays |
TW200947002A (en) * | 2008-05-14 | 2009-11-16 | Ind Tech Res Inst | Gratings at optical fiber side and coupling apparatus using the same |
US8358317B2 (en) | 2008-05-23 | 2013-01-22 | Evans & Sutherland Computer Corporation | System and method for displaying a planar image on a curved surface |
US8702248B1 (en) | 2008-06-11 | 2014-04-22 | Evans & Sutherland Computer Corporation | Projection method for reducing interpixel gaps on a viewing surface |
US8077378B1 (en) | 2008-11-12 | 2011-12-13 | Evans & Sutherland Computer Corporation | Calibration system and method for light modulation device |
KR20110068492A (ko) * | 2009-12-16 | 2011-06-22 | 한국전자통신연구원 | 광 결합장치 및 그를 구비한 능동 광모듈 |
US8134132B2 (en) | 2010-04-28 | 2012-03-13 | Dymax Corporation | Exposure device having an array of light emitting diodes |
US8363310B2 (en) | 2010-05-04 | 2013-01-29 | The United States Of America As Represented By The Secretary Of The Army | High power and high gain fiber amplifier |
US8735791B2 (en) | 2010-07-13 | 2014-05-27 | Svv Technology Innovations, Inc. | Light harvesting system employing microstructures for efficient light trapping |
GB201108557D0 (en) * | 2011-05-20 | 2011-07-06 | Isis Innovation | Optical fibre coupling arrangement |
US9641826B1 (en) | 2011-10-06 | 2017-05-02 | Evans & Sutherland Computer Corporation | System and method for displaying distant 3-D stereo on a dome surface |
US10802209B2 (en) | 2013-01-28 | 2020-10-13 | Lumentum Operations Llc | Cladding light stripper |
GB2511923B (en) | 2013-01-28 | 2018-10-03 | Lumentum Operations Llc | A cladding light stripper and method of manufacturing |
JP6452242B2 (ja) * | 2015-03-09 | 2019-01-16 | Kddi株式会社 | 光伝送システム、光増幅器及びその励起光制御方法 |
FR3105666B1 (fr) * | 2019-12-23 | 2022-01-14 | Latelec | Module émetteur-récepteur optique |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4130343A (en) * | 1977-02-22 | 1978-12-19 | Bell Telephone Laboratories, Incorporated | Coupling arrangements between a light-emitting diode and an optical fiber waveguide and between an optical fiber waveguide and a semiconductor optical detector |
US4165496A (en) * | 1977-12-16 | 1979-08-21 | Bell Telephone Laboratories, Incorporated | Optical fiber light tap |
JPS5584907A (en) * | 1978-12-21 | 1980-06-26 | Matsushita Electric Ind Co Ltd | Signal connector |
US4346961A (en) * | 1979-04-02 | 1982-08-31 | The Boeing Company | Fiber optic T coupler |
JPS60200208A (ja) * | 1984-03-23 | 1985-10-09 | Fujitsu Ltd | 光フアイバ |
GB8724736D0 (en) * | 1987-10-22 | 1987-11-25 | British Telecomm | Optical fibre |
US4815079A (en) * | 1987-12-17 | 1989-03-21 | Polaroid Corporation | Optical fiber lasers and amplifiers |
JPH02131201A (ja) * | 1988-11-12 | 1990-05-21 | Nec Corp | 光情報の伝送装置 |
US5037172A (en) * | 1989-03-22 | 1991-08-06 | Teledyne Industry, Inc. | Fiber optic device with a reflective notch coupler |
JPH0793469B2 (ja) * | 1989-12-25 | 1995-10-09 | 三菱電機株式会社 | 半導体レーザ励起固体レーザ装置 |
GB9010943D0 (en) * | 1990-05-16 | 1990-07-04 | British Telecomm | Wave-guiding structure with lasing properties |
US5163113A (en) * | 1990-07-19 | 1992-11-10 | Gte Laboratories Incorporated | Laser-to-fiber coupling apparatus |
JP3292729B2 (ja) * | 1990-11-26 | 2002-06-17 | 三菱電機株式会社 | 光ファイバ形光増幅装置 |
US5268910A (en) * | 1991-07-18 | 1993-12-07 | General Instrument Corporation | Superluminescent optical source |
US5187760A (en) * | 1992-01-23 | 1993-02-16 | General Instrument Corporation | Wavelength selective coupler for high power optical communications |
US5292320A (en) * | 1992-07-06 | 1994-03-08 | Ceramoptec, Inc. | Radial medical laser delivery device |
GB2273389B (en) * | 1992-12-14 | 1996-07-17 | Pirelli Cavi Spa | Rare earth doped optical fibre amplifiers |
US5530709A (en) * | 1994-09-06 | 1996-06-25 | Sdl, Inc. | Double-clad upconversion fiber laser |
-
1995
- 1995-12-07 US US08/568,859 patent/US5854865A/en not_active Expired - Lifetime
-
1996
- 1996-12-09 AU AU17421/97A patent/AU725785B2/en not_active Ceased
- 1996-12-09 WO PCT/US1996/019452 patent/WO1997021124A1/en active IP Right Grant
- 1996-12-09 JP JP9521452A patent/JP2000502193A/ja not_active Ceased
- 1996-12-09 EP EP96945924A patent/EP0865620B1/de not_active Expired - Lifetime
- 1996-12-09 DE DE69631895T patent/DE69631895T2/de not_active Expired - Fee Related
-
2007
- 2007-03-20 JP JP2007073284A patent/JP2007249213A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
WO1997021124A1 (en) | 1997-06-12 |
EP0865620A1 (de) | 1998-09-23 |
EP0865620A4 (de) | 1999-12-22 |
DE69631895T2 (de) | 2004-09-09 |
EP0865620B1 (de) | 2004-03-17 |
JP2007249213A (ja) | 2007-09-27 |
AU725785B2 (en) | 2000-10-19 |
AU1742197A (en) | 1997-06-27 |
US5854865A (en) | 1998-12-29 |
JP2000502193A (ja) | 2000-02-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69631895D1 (de) | Vorrichtung und verfahren zum seitlichen pumpen einer optischen faser | |
DE69118631D1 (de) | Verfahren und Vorrichtung zum Polieren einer optischen Faser | |
DE69413741D1 (de) | Verfahren und Vorrichtung zum Beschichten von optischen Wellenleiterfasern | |
ATE259072T1 (de) | Optisches verfahren und vorrichtung | |
DE69311841D1 (de) | Verfahren und Vorrichtung zum Ziehen von optischen Fasern | |
DE69832802D1 (de) | Vorrichtung und verfahren zur optischen übertragungstechnik | |
DE69530076D1 (de) | Verfahren und vorrichtung zum falten einer intraokularlinse | |
DE3873860D1 (de) | Verfahren und vorrichtung zur beschichtung einer optischen faser. | |
DE69525721D1 (de) | Verfahren und Vorrichtung zum Entfernen von Umhüllungen von optischen Fasern | |
DE69327823D1 (de) | Verfahren zum Ziehen einer optischen Faser und die so hergestellte Faser | |
DE69520537D1 (de) | Vorrichtung und Verfahren zum Polieren der Endfläche einer optischen Fiber | |
DE69604001D1 (de) | Verfahren und Vorrichtung zur optischen Verstärkung | |
DE59602017D1 (de) | Verfahren und Vorrichtung zum Ziehen einer optischen Faser aus einer Vorform | |
DE69431094D1 (de) | Verfahren und Vorrichtung zur optischen Übertragung | |
DE69518230D1 (de) | Verfahren zum Installieren einer optischen Faser | |
DE69532210D1 (de) | Verfahren zur Temperaturmessung mittels einer optischen Faser und Vorrichtung dafür | |
DE69621934D1 (de) | Verfahren und vorrichtung zum sammeln von fasern. | |
DE69822497D1 (de) | Verfahren und vorrichtung zum kühlen von optischen fasern | |
DE69611995D1 (de) | Verfahren und vorrichtung zur übertragung von signalen in optischen fasern | |
ATE202438T1 (de) | System, verfahren und vorrichtung zur überwachung eines faseroptischen kabels | |
DE69614303D1 (de) | Verfahren und Vorrichtung zur Herstellung einer faseroptischen Steckeranordnung | |
DE3851594D1 (de) | Verfahren und Gerät zum Abschliessen einer optischen Faser. | |
DE69512073D1 (de) | Verfahren und vorrichtung zum sortieren einer fasersuspension | |
DE69400302D1 (de) | Verfahren und Vorrichtung zum Nachweis unregelmässiger Bereiche einer optischen Faser | |
DE59406011D1 (de) | Verfahren und Vorrichtung zur Herstellung einer optischen Faser |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |