ATE245828T1 - Verfahren zur herstellung eines optischen elements und optisches element daraus - Google Patents
Verfahren zur herstellung eines optischen elements und optisches element darausInfo
- Publication number
- ATE245828T1 ATE245828T1 AT98913034T AT98913034T ATE245828T1 AT E245828 T1 ATE245828 T1 AT E245828T1 AT 98913034 T AT98913034 T AT 98913034T AT 98913034 T AT98913034 T AT 98913034T AT E245828 T1 ATE245828 T1 AT E245828T1
- Authority
- AT
- Austria
- Prior art keywords
- optical element
- composition
- core
- substrate
- transition temperature
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000000203 mixture Substances 0.000 abstract 4
- 238000005253 cladding Methods 0.000 abstract 2
- 230000009477 glass transition Effects 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 2
- 230000007774 longterm Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/7015—Details of optical elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
- G03F7/001—Phase modulating patterns, e.g. refractive index patterns
-
- 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
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1221—Basic optical elements, e.g. light-guiding paths made from organic materials
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/70191—Optical correction elements, filters or phase plates for controlling intensity, wavelength, polarisation, phase or the like
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70225—Optical aspects of catadioptric systems, i.e. comprising reflective and refractive elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70308—Optical correction elements, filters or phase plates for manipulating imaging light, e.g. intensity, wavelength, polarisation, phase or image shift
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70316—Details of optical elements, e.g. of Bragg reflectors, extreme ultraviolet [EUV] multilayer or bilayer mirrors or diffractive optical elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0035—Multiple processes, e.g. applying a further resist layer on an already in a previously step, processed pattern or textured surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Optical Integrated Circuits (AREA)
- Polymerisation Methods In General (AREA)
- Glass Compositions (AREA)
- Led Devices (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/838,344 US6335149B1 (en) | 1997-04-08 | 1997-04-08 | High performance acrylate materials for optical interconnects |
| PCT/US1998/005609 WO1998045759A1 (en) | 1997-04-08 | 1998-03-23 | Method of producing an optical element and optical element therefrom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE245828T1 true ATE245828T1 (de) | 2003-08-15 |
Family
ID=25276866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT98913034T ATE245828T1 (de) | 1997-04-08 | 1998-03-23 | Verfahren zur herstellung eines optischen elements und optisches element daraus |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US6335149B1 (de) |
| EP (1) | EP0974076B1 (de) |
| JP (1) | JP3986567B2 (de) |
| KR (1) | KR100536486B1 (de) |
| AT (1) | ATE245828T1 (de) |
| CA (1) | CA2286275A1 (de) |
| DE (1) | DE69816605T2 (de) |
| TW (1) | TW461982B (de) |
| WO (1) | WO1998045759A1 (de) |
Families Citing this family (52)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6335149B1 (en) * | 1997-04-08 | 2002-01-01 | Corning Incorporated | High performance acrylate materials for optical interconnects |
| US6236774B1 (en) * | 1999-03-22 | 2001-05-22 | Gemfire Corporation | Optoelectronic and photonic devices formed of materials which inhibit degradation and failure |
| US6555288B1 (en) | 1999-06-21 | 2003-04-29 | Corning Incorporated | Optical devices made from radiation curable fluorinated compositions |
| EP1234199A1 (de) | 1999-12-02 | 2002-08-28 | Gemfire Corporation | Photostrukturierung von optischen bauteilen |
| US6507681B1 (en) | 2000-08-02 | 2003-01-14 | Gemfire Corporation | Anti-waveguide routing structure |
| US6434318B1 (en) | 2000-08-02 | 2002-08-13 | Gemfire Corporation | Device and method for variable attenuation of an optical channel |
| DE60008121T2 (de) * | 2000-11-28 | 2004-09-16 | National University Of Ireland, Cork | Herstellung von Materialien für Wellenleiter mit Stufenbrechungsindex |
| US6496637B2 (en) * | 2000-12-21 | 2002-12-17 | Corning Incorporated | Low optical loss polymers |
| US6596787B1 (en) * | 2001-02-02 | 2003-07-22 | Henkel Loctite Corporation | Non-yellowing fast cure speed UV\visible curable liquid acrylic ester adhesives for glass bonding |
| US6542684B2 (en) | 2001-05-01 | 2003-04-01 | Corning Incorporated | Optimized multi-layer optical waveguiding system |
| US20030174943A1 (en) * | 2002-03-14 | 2003-09-18 | Caracci Stephen J. | Optical devices and methods of manufacture |
| US6928226B2 (en) * | 2002-03-14 | 2005-08-09 | Corning Incorporated | Fiber and lens grippers, optical devices and methods of manufacture |
| US6738543B1 (en) | 2002-05-30 | 2004-05-18 | E. I. Du Pont De Nemours And Company | Hitless tunable wavelength filters |
| US6728445B2 (en) * | 2002-05-30 | 2004-04-27 | E. I. Du Ponte De Nemours And Company | Closed-loop control of tunable optical wavelength filters |
| JP3656640B2 (ja) * | 2002-08-28 | 2005-06-08 | セイコーエプソン株式会社 | 樹脂絶縁層の製造方法、電気光学装置用基板、電気光学装置の製造方法、及び電気光学装置 |
| US6936194B2 (en) * | 2002-09-05 | 2005-08-30 | Molecular Imprints, Inc. | Functional patterning material for imprint lithography processes |
| US6902871B2 (en) * | 2002-10-03 | 2005-06-07 | Lumera Corporation | Method for manufacturing polymer microstructures and polymer waveguides |
| US8349241B2 (en) * | 2002-10-04 | 2013-01-08 | Molecular Imprints, Inc. | Method to arrange features on a substrate to replicate features having minimal dimensional variability |
| US6937811B2 (en) * | 2002-11-19 | 2005-08-30 | Lumera Corporation | Polymer waveguide devices incorporating electro-optically active polymer clads |
| US20040101268A1 (en) * | 2002-11-27 | 2004-05-27 | General Electric Company | Optical device structures based on photo-definable polymerizable composites |
| US20040114874A1 (en) * | 2002-12-12 | 2004-06-17 | Katsumi Bono | Optical fiber array devices and methods of manufacture |
| US6810195B2 (en) * | 2002-12-19 | 2004-10-26 | Cornining Incorporated | Securing optical elements and optical devices |
| US6816653B2 (en) * | 2003-02-25 | 2004-11-09 | Corning Incorporated | Passive alignment of optical fibers with optical elements |
| US20040168613A1 (en) * | 2003-02-27 | 2004-09-02 | Molecular Imprints, Inc. | Composition and method to form a release layer |
| US20040191639A1 (en) * | 2003-03-26 | 2004-09-30 | Danliang Jin | Micro-imprinting method and template for use in same |
| US6789953B1 (en) | 2003-04-30 | 2004-09-14 | Corning Cable Systems Llc | Optical coupler |
| US7157036B2 (en) * | 2003-06-17 | 2007-01-02 | Molecular Imprints, Inc | Method to reduce adhesion between a conformable region and a pattern of a mold |
| US7307118B2 (en) * | 2004-11-24 | 2007-12-11 | Molecular Imprints, Inc. | Composition to reduce adhesion between a conformable region and a mold |
| US20050084804A1 (en) * | 2003-10-16 | 2005-04-21 | Molecular Imprints, Inc. | Low surface energy templates |
| US6852563B1 (en) | 2004-01-21 | 2005-02-08 | Lumera Corporation | Process of fabricating electro-optic polymer devices with polymer sustained microelectrodes |
| US7125949B2 (en) * | 2004-01-21 | 2006-10-24 | Lumera Corporation | Fluorinated sol-gel electro-optic materials, process for producing same, and devices therefrom |
| US7241394B2 (en) * | 2004-01-21 | 2007-07-10 | Lumera Corporation | Process of fabricating polymer sustained microelectrodes |
| US7250712B2 (en) * | 2004-01-21 | 2007-07-31 | Lumera Corporation | Polymer sustained microelectrodes |
| US8076386B2 (en) * | 2004-02-23 | 2011-12-13 | Molecular Imprints, Inc. | Materials for imprint lithography |
| ES2300048T3 (es) * | 2004-08-25 | 2008-06-01 | UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION | Pelicula polimerica. |
| US20060062922A1 (en) * | 2004-09-23 | 2006-03-23 | Molecular Imprints, Inc. | Polymerization technique to attenuate oxygen inhibition of solidification of liquids and composition therefor |
| WO2006086841A1 (en) * | 2005-02-15 | 2006-08-24 | Rpo Pty Limited | Photolithographic patterning of polymeric materials |
| US8557351B2 (en) | 2005-07-22 | 2013-10-15 | Molecular Imprints, Inc. | Method for adhering materials together |
| US7759407B2 (en) * | 2005-07-22 | 2010-07-20 | Molecular Imprints, Inc. | Composition for adhering materials together |
| US7541391B2 (en) * | 2005-09-02 | 2009-06-02 | General Electric Company | Self-forming polymer waveguide and waveguide material with reduced shrinkage |
| WO2007112309A2 (en) * | 2006-03-24 | 2007-10-04 | 3M Innovative Properties Company | Process for making microneedles, microneedle arrays, masters, and replication tools |
| US8529993B2 (en) * | 2006-05-01 | 2013-09-10 | Zetta Research andDevelopment LLC—RPO Series | Low volatility polymers for two-stage deposition processes |
| US20080305255A1 (en) * | 2007-06-07 | 2008-12-11 | Fujifilm Manufacturing U.S.A. Inc. | Optical waveguide coating |
| US7496263B2 (en) * | 2007-06-07 | 2009-02-24 | Fujifilm Manfacturing U.S.A. Inc. | Thermosetting optical waveguide coating |
| JP5584202B2 (ja) | 2008-05-21 | 2014-09-03 | セラジェクト, インコーポレイテッド | 固溶体穿孔器パッチの製造方法及びその使用 |
| US7957197B2 (en) | 2008-05-28 | 2011-06-07 | Sandisk Corporation | Nonvolatile memory with a current sense amplifier having a precharge circuit and a transfer gate coupled to a sense node |
| US8442360B2 (en) * | 2008-11-05 | 2013-05-14 | Gigoptix, Inc. | Intrinsically low resistivity hybrid sol-gel polymer clads and electro-optic devices made therefrom |
| US20110104388A1 (en) * | 2009-11-02 | 2011-05-05 | Harris Corporation | Method for making an optical device including a curable index matching elastomeric solid layer |
| CA2890024A1 (en) | 2012-11-30 | 2014-06-05 | Landmark Graphics Corporation | Systems and methods for reordering sequential actions |
| US10133174B2 (en) | 2013-12-06 | 2018-11-20 | 3M Innovative Properties Company | Liquid photoreactive composition and method of fabricating structures |
| EP3577522A4 (de) | 2017-02-01 | 2020-01-01 | Molecular Imprints, Inc. | Konfiguration von optischen schichten bei drucklithografieverfahren |
| US11382799B2 (en) | 2018-11-26 | 2022-07-12 | Bluegrass Farmaceuticals, LLC | Tampon with intravaginal cannabinoid delivery device |
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| GB1372578A (en) * | 1971-11-05 | 1974-10-30 | Inst Kib Akademii Nauk Gruzins | Light guides |
| US4129557A (en) * | 1976-05-26 | 1978-12-12 | Sumitomo Chemical Company, Limited | Process for producing copolymerized resins |
| US4609252A (en) * | 1979-04-02 | 1986-09-02 | Hughes Aircraft Company | Organic optical waveguide device and method of making |
| US4376160A (en) * | 1980-04-07 | 1983-03-08 | California Institute Of Technology | Method of making and structure for monolithic optical circuits |
| GB2170923A (en) * | 1985-02-07 | 1986-08-13 | Tektronix Inc | Optical waveguide structures and their fabrication |
| US4708833A (en) * | 1985-05-13 | 1987-11-24 | Sumitomo Electric Industries, Ltd. | Method for producing elastomeric optical fiber |
| US4828359A (en) * | 1986-01-09 | 1989-05-09 | Sumitomo Electric Industries, Ltd. | Alkyl methacrylate homo - or copolymer optical waveguide for illumination and production of the same |
| JPS62209401A (ja) * | 1986-03-10 | 1987-09-14 | Sumitomo Electric Ind Ltd | プラスチツク光フアイバ |
| JPH01138509A (ja) * | 1987-11-26 | 1989-05-31 | Asahi Chem Ind Co Ltd | 高密度光導波路及びその製法 |
| JPH01237505A (ja) * | 1988-03-18 | 1989-09-22 | Asahi Chem Ind Co Ltd | 新規な光導波路 |
| JPH02273703A (ja) * | 1989-04-17 | 1990-11-08 | Teijin Ltd | プラスチック光ファイバー及びその製造方法 |
| DE69019889T2 (de) * | 1989-08-08 | 1995-11-16 | Ici Plc | Optische Komponente. |
| JPH03241302A (ja) * | 1990-02-20 | 1991-10-28 | Nok Corp | 光導波路 |
| US5046800A (en) * | 1990-10-09 | 1991-09-10 | At&T Bell Laboratories | Article comprising a passive optical waveguide |
| US5136682A (en) | 1991-04-15 | 1992-08-04 | Raychem Corporation | Curable compositions and methods for use in forming optical waveguide structures |
| US5265185A (en) * | 1992-10-02 | 1993-11-23 | The United States Of America As Represented By The Secretary Of The Army | Optical waveguides in electro-optical polymers and method |
| JPH06214274A (ja) * | 1993-01-20 | 1994-08-05 | Nippon Telegr & Teleph Corp <Ntt> | 導波路型光素子 |
| US5406641A (en) * | 1993-06-15 | 1995-04-11 | Rohm And Haas Company | Flexible light pipe, cured composite and processes for preparation thereof |
| US5359687A (en) * | 1993-08-23 | 1994-10-25 | Alliedsignal Inc. | Polymer microstructures which facilitate fiber optic to waveguide coupling |
| US5462700A (en) * | 1993-11-08 | 1995-10-31 | Alliedsignal Inc. | Process for making an array of tapered photopolymerized waveguides |
| US5483612A (en) * | 1994-10-17 | 1996-01-09 | Corning Incorporated | Increased capacity optical waveguide |
| US5656241A (en) * | 1995-09-07 | 1997-08-12 | Optical Sensors Incorporated | Method for manufacturing fiber optic sensors |
| US5822489A (en) * | 1996-12-31 | 1998-10-13 | Lucent Technologies, Inc. | Low refractive index photo-curable composition for waveguide applications |
| US5974214A (en) * | 1997-04-08 | 1999-10-26 | Alliedsignal Inc. | Raised rib waveguide ribbon for precision optical interconnects |
| US5850498A (en) * | 1997-04-08 | 1998-12-15 | Alliedsignal Inc. | Low stress optical waveguide having conformal cladding and fixture for precision optical interconnects |
| US6335149B1 (en) * | 1997-04-08 | 2002-01-01 | Corning Incorporated | High performance acrylate materials for optical interconnects |
| US6306563B1 (en) * | 1999-06-21 | 2001-10-23 | Corning Inc. | Optical devices made from radiation curable fluorinated compositions |
-
1997
- 1997-04-08 US US08/838,344 patent/US6335149B1/en not_active Expired - Lifetime
-
1998
- 1998-03-23 WO PCT/US1998/005609 patent/WO1998045759A1/en not_active Ceased
- 1998-03-23 AT AT98913034T patent/ATE245828T1/de not_active IP Right Cessation
- 1998-03-23 KR KR10-1999-7009276A patent/KR100536486B1/ko not_active Expired - Fee Related
- 1998-03-23 CA CA002286275A patent/CA2286275A1/en not_active Abandoned
- 1998-03-23 JP JP54279998A patent/JP3986567B2/ja not_active Expired - Fee Related
- 1998-03-23 DE DE69816605T patent/DE69816605T2/de not_active Expired - Lifetime
- 1998-03-23 EP EP98913034A patent/EP0974076B1/de not_active Expired - Lifetime
- 1998-05-26 TW TW087105270A patent/TW461982B/zh not_active IP Right Cessation
-
2001
- 2001-08-23 US US09/939,508 patent/US6512874B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69816605D1 (de) | 2003-08-28 |
| JP3986567B2 (ja) | 2007-10-03 |
| WO1998045759A1 (en) | 1998-10-15 |
| CA2286275A1 (en) | 1998-10-15 |
| DE69816605T2 (de) | 2004-06-09 |
| TW461982B (en) | 2001-11-01 |
| US20020034711A1 (en) | 2002-03-21 |
| KR20010006196A (ko) | 2001-01-26 |
| US6512874B2 (en) | 2003-01-28 |
| JP2001519044A (ja) | 2001-10-16 |
| EP0974076B1 (de) | 2003-07-23 |
| KR100536486B1 (ko) | 2005-12-14 |
| EP0974076A1 (de) | 2000-01-26 |
| US6335149B1 (en) | 2002-01-01 |
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