DE69730945D1 - Optische faser mit modifiziertem drall zur verringerung der polarisationsmodendispersion sowie verfahren zu ihrer herstellung - Google Patents
Optische faser mit modifiziertem drall zur verringerung der polarisationsmodendispersion sowie verfahren zu ihrer herstellungInfo
- Publication number
- DE69730945D1 DE69730945D1 DE69730945T DE69730945T DE69730945D1 DE 69730945 D1 DE69730945 D1 DE 69730945D1 DE 69730945 T DE69730945 T DE 69730945T DE 69730945 T DE69730945 T DE 69730945T DE 69730945 D1 DE69730945 D1 DE 69730945D1
- Authority
- DE
- Germany
- Prior art keywords
- production
- optical fiber
- polarization mode
- mode dispersion
- reduce polarization
- 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 - Lifetime
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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02285—Characterised by the polarisation mode dispersion [PMD] properties, e.g. for minimising PMD
-
- 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
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/02—External structure or shape details
- C03B2203/06—Axial perturbations, e.g. twist, by torsion, undulating, crimped
-
- 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
- C03B2203/18—Axial perturbations, e.g. in refractive index or composition
-
- 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
- C03B2203/18—Axial perturbations, e.g. in refractive index or composition
- C03B2203/20—Axial perturbations, e.g. in refractive index or composition helical
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1037696P | 1996-01-22 | 1996-01-22 | |
PCT/US1997/000605 WO1997026221A1 (en) | 1996-01-22 | 1997-01-21 | Optical fiberof modulated spin for reduced polarisation mode dispersion as well as process and apparatus for its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69730945D1 true DE69730945D1 (de) | 2004-11-04 |
Family
ID=21745481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69730945T Expired - Lifetime DE69730945D1 (de) | 1996-01-22 | 1997-01-21 | Optische faser mit modifiziertem drall zur verringerung der polarisationsmodendispersion sowie verfahren zu ihrer herstellung |
Country Status (12)
Country | Link |
---|---|
US (2) | US5943466A (de) |
EP (1) | EP0876305B1 (de) |
JP (1) | JP3226283B2 (de) |
KR (1) | KR100470430B1 (de) |
CN (1) | CN1113823C (de) |
AU (1) | AU719604B2 (de) |
BR (1) | BR9707059A (de) |
CA (1) | CA2242989A1 (de) |
DE (1) | DE69730945D1 (de) |
RU (1) | RU2166484C2 (de) |
TW (1) | TW337000B (de) |
WO (1) | WO1997026221A1 (de) |
Families Citing this family (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1012641A4 (de) * | 1996-10-07 | 2002-05-22 | Corning Inc | Sensorvorrichtung mit polarisationserhaltenden fasern |
DE19810812A1 (de) * | 1998-03-12 | 1999-09-16 | Siemens Ag | Optisches Übertragungselement sowie Verfahren zur Reduzierung dessen Polarisationsmoden-Dispersion |
KR20010071612A (ko) | 1998-06-24 | 2001-07-28 | 지아네시 피에르 지오반니 | 원석으로부터 광섬유를 제조하기 위한 장치 및 방법 |
DE69916079T2 (de) * | 1998-06-24 | 2005-02-17 | Pirelli & C. S.P.A. | Verfahren und vorrichtung zum drehen einer beschichteten optischen faser während des ziehens aus einer vorform |
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 |
ES2235956T3 (es) * | 1999-10-29 | 2005-07-16 | PIRELLI & C. S.P.A. | Procedimiento de medicion de la torsion transmitida a una fibra optica y procedimiento de tratamiento de una fibra optica utilizando este procedimiento. |
TW544532B (en) * | 1999-11-08 | 2003-08-01 | Sumitomo Electric Industries | Optical fiber, manufacture method of the optical fiber, and optical transmission system with the optical fiber |
US6920270B2 (en) | 2000-07-06 | 2005-07-19 | Pirelli Cavi E Sistemi S.P.A. | Optical fibre with reduced polarization mode dispersion and method for obtaining an optical fibre with reduced polarization mode dispersion |
AU2001279310A1 (en) | 2000-08-02 | 2002-02-13 | Kvh Industries, Inc. | Reduction of linear birefringence in circular-core single-mode fiber |
EP1356333A2 (de) * | 2000-12-28 | 2003-10-29 | PIRELLI S.p.A. | Herstellungsverfahren für ein faseroptisches telekommunikationskabel mit reduzierter polarisationsmodendispersion |
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 |
AU2003210866A1 (en) * | 2002-02-11 | 2003-09-04 | Corning Incorporated | Reduced polarization mode dispersion fiber |
JP3765283B2 (ja) * | 2002-04-01 | 2006-04-12 | 住友電気工業株式会社 | 光ファイバの製造方法および製造装置 |
US6791678B2 (en) | 2002-07-23 | 2004-09-14 | Fitel Usa Corp. | System and method for obtaining spin and mechanical twist data during optical fiber draw |
US6859596B2 (en) * | 2002-07-23 | 2005-02-22 | Fitel Usa Corp. | Systems and methods for forming ultra-low PMD optical fiber using amplitude and frequency keyed fiber spin functions |
US7352971B2 (en) | 2002-08-02 | 2008-04-01 | Nortel Networks Limited | Broadband control of polarization mode dispersion |
US6704100B2 (en) | 2002-08-08 | 2004-03-09 | Fitel Usa Corp. | Systems and methods for accurately measuring low values of polarization mode dispersion in an optical fiber using localized external perturbation induced low mode coupling |
KR100401342B1 (en) * | 2002-08-31 | 2003-10-10 | Lg Cable Ltd | Apparatus for spinning optical fiber and apparatus and method for fabricating optical fiber using the same |
KR100441156B1 (ko) * | 2002-08-31 | 2004-07-19 | 엘지전선 주식회사 | 광섬유에 인가되는 스핀을 모니터링하는 방법 및 양방향스핀의 대칭성을 확보하기 위한 광섬유 제조방법 |
WO2004050573A1 (en) | 2002-09-25 | 2004-06-17 | Giacomo Stefano Roba | Process for producing an optical fiber having a low polarization mode dispersion |
US7035525B2 (en) * | 2002-09-26 | 2006-04-25 | Fitel Usa Corp. | Methods and apparatuses for correcting mechanical twist in optical fiber |
KR100498925B1 (ko) * | 2002-10-23 | 2005-07-04 | 삼성전자주식회사 | 스핀 진폭 변조를 이용한 광섬유 인출 방법 |
WO2004058654A1 (en) * | 2002-12-30 | 2004-07-15 | Pirelli & C. S.P.A. | Method for producing an optical fiber having low polarization mode dispersion |
US7310974B2 (en) * | 2003-01-13 | 2007-12-25 | Sterlite Optical Technologies Limited | Method for producing twisted optical fiber with reduced polarization mode dispersion |
US6937325B2 (en) * | 2003-01-30 | 2005-08-30 | Fitel U.S.A. Corporation | Method and apparatus for measuring eccentricity in a optical fiber |
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 |
FR2856805B1 (fr) * | 2003-06-24 | 2005-10-28 | Cit Alcatel | Systeme cotre la dispersion modale de polarisation d'une fibre optique |
BR0318487A (pt) * | 2003-08-29 | 2006-09-12 | Prysmian Cavi Sistemi Energia | processo para produzir uma fibra ótica de dispersão de modo de baixa polarização |
US6993229B2 (en) * | 2003-09-30 | 2006-01-31 | Corning Incorporated | Method of making spun optical fiber with low PMD |
KR100868373B1 (ko) * | 2003-10-22 | 2008-11-12 | 가부시키가이샤후지쿠라 | 광화이버 및 광화이버의 편파 모드 분산 측정방법 |
RU2326825C2 (ru) * | 2003-12-26 | 2008-06-20 | Фудзикура Лтд. | Устройство для скручивания оптического волокна, способ изготовления оптического волокна и оптическое волокно |
DE602004020807D1 (de) | 2003-12-30 | 2009-06-04 | Prysmian Spa | Optische faserverbindung mit niedriger polarisationsmodendispersion (pmd) und herstellungsverfahren dafür |
EP1725853B1 (de) * | 2004-02-20 | 2014-10-01 | Prysmian S.p.A. | Verfahren zur bestimmung der spinnmerkmalen von optischen spinnfasern |
US20050188728A1 (en) * | 2004-03-01 | 2005-09-01 | Zhi Zhiou | Apparatus and method for manufacturing optical fiber including rotating optical fiber preforms during draw |
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 |
JP2008524637A (ja) * | 2004-10-24 | 2008-07-10 | チラル・フオトニクス・インコーポレーテツド | キラルファイバー中偏光子装置および方法 |
US7317855B2 (en) * | 2004-12-16 | 2008-01-08 | Corning Incorporated | Method of imparting twist to optical fiber |
KR100642378B1 (ko) * | 2005-04-04 | 2006-11-03 | 엘에스전선 주식회사 | 광섬유 주변의 압력 변화를 이용하여 편광모드분산을개선하는 장치 및 이를 이용한 광섬유 제조장치 |
EP2033029B1 (de) * | 2006-06-22 | 2018-11-14 | Prysmian S.p.A. | Optische Faser mit sinusoidaler Spinfunktion |
KR100872235B1 (ko) | 2006-11-17 | 2008-12-05 | 엘에스전선 주식회사 | 편광모드분산 저감을 위한 단일모드 광섬유의 인선방법 및이 방법에 의해 제조된 광섬유 |
WO2009107667A1 (ja) | 2008-02-28 | 2009-09-03 | 住友電気工業株式会社 | 光ファイバ |
WO2009147881A1 (ja) * | 2008-06-05 | 2009-12-10 | 住友電気工業株式会社 | 被覆光ファイバ製造装置および被覆光ファイバ製造方法 |
US8111957B2 (en) * | 2008-07-10 | 2012-02-07 | Corning Incorporated | +cylindrical polarization beams |
EP2341377B1 (de) * | 2008-10-20 | 2017-10-04 | Sumitomo Electric Industries, Ltd. | Verfahren zum herstellen von optischer faser |
CN102503116B (zh) * | 2011-10-14 | 2014-04-23 | 武汉长盈通光电技术有限公司 | 一种旋转光纤的制造方法及旋转收纤装置 |
JP5903123B2 (ja) * | 2014-04-07 | 2016-04-13 | 株式会社フジクラ | 光ファイバ素線の製造方法および製造装置 |
RU2614535C1 (ru) * | 2015-12-23 | 2017-03-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный университет телекоммуникаций и информатики" (ФГБОУ ВО ПГУТИ) | Способ уменьшения дифференциальной модовой задержки волоконно-оптической линии передачи |
KR20190001401U (ko) | 2017-12-04 | 2019-06-12 | 김윤성 | 도포구가 구비된 화장용 팩 용구 |
KR102489354B1 (ko) | 2020-12-28 | 2023-01-17 | 주식회사 유아트코리아 | 마스크팩 조성물 보관성이 향상된 마스크팩 용구 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2295224A1 (fr) * | 1974-12-16 | 1976-07-16 | Europ Turb Vapeur | Disque monte sur un arbre de turbine |
JPS5311039A (en) * | 1976-07-19 | 1978-02-01 | Hitachi Ltd | Controller of diameter of optical fiber |
US4308045A (en) * | 1978-03-10 | 1981-12-29 | Bell Telephone Laboratories, Incorporated | Method for fabricating optical fibers with enhanced mode coupling |
US4248035A (en) * | 1979-04-02 | 1981-02-03 | Northern Telecom Limited | Apparatus and method used in the assembly of fibre optic cables |
DE3022088C2 (de) * | 1980-06-12 | 1984-06-14 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum Ablegen von strangförmigem Gut, insbesondere elektrischem und/oder optischem Nachrichtenkabel |
GB2101762B (en) * | 1981-07-07 | 1984-11-28 | Central Electr Generat Board | Optic fibre |
US4473273A (en) * | 1981-09-04 | 1984-09-25 | Trw Inc. | High bandwidth fiber and method of forming the same by preform rotation during drawing |
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 |
FR2537731B1 (fr) * | 1982-12-10 | 1986-01-17 | Thomson Csf | Procede de fabrication d'une fibre conservant la polarisation circulaire et dispositif mettant en oeuvre ce procede |
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 |
US5704960A (en) * | 1995-12-20 | 1998-01-06 | Corning, Inc. | Method of forming an optical fiber for reduced polarization effects in amplifiers |
-
1997
- 1997-01-21 JP JP52613397A patent/JP3226283B2/ja not_active Expired - Lifetime
- 1997-01-21 DE DE69730945T patent/DE69730945D1/de not_active Expired - Lifetime
- 1997-01-21 EP EP97902031A patent/EP0876305B1/de not_active Expired - Lifetime
- 1997-01-21 AU AU15794/97A patent/AU719604B2/en not_active Ceased
- 1997-01-21 WO PCT/US1997/000605 patent/WO1997026221A1/en active IP Right Grant
- 1997-01-21 KR KR10-1998-0705580A patent/KR100470430B1/ko not_active IP Right Cessation
- 1997-01-21 CA CA002242989A patent/CA2242989A1/en not_active Abandoned
- 1997-01-21 US US08/784,574 patent/US5943466A/en not_active Expired - Lifetime
- 1997-01-21 CN CN97191779A patent/CN1113823C/zh not_active Expired - Lifetime
- 1997-01-21 RU RU98115842/03A patent/RU2166484C2/ru active
- 1997-01-21 BR BR9707059A patent/BR9707059A/pt not_active Application Discontinuation
- 1997-06-29 TW TW086109355A patent/TW337000B/zh active
-
1999
- 1999-05-06 US US09/306,470 patent/US6240748B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5943466A (en) | 1999-08-24 |
CN1209793A (zh) | 1999-03-03 |
US6240748B1 (en) | 2001-06-05 |
AU1579497A (en) | 1997-08-11 |
AU719604B2 (en) | 2000-05-11 |
EP0876305A1 (de) | 1998-11-11 |
RU2166484C2 (ru) | 2001-05-10 |
EP0876305B1 (de) | 2004-09-29 |
JPH11508221A (ja) | 1999-07-21 |
KR100470430B1 (ko) | 2005-06-21 |
KR19990081869A (ko) | 1999-11-15 |
CN1113823C (zh) | 2003-07-09 |
CA2242989A1 (en) | 1997-07-24 |
BR9707059A (pt) | 1999-07-20 |
WO1997026221A1 (en) | 1997-07-24 |
TW337000B (en) | 1998-07-21 |
JP3226283B2 (ja) | 2001-11-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69730945D1 (de) | Optische faser mit modifiziertem drall zur verringerung der polarisationsmodendispersion sowie verfahren zu ihrer herstellung | |
DE1242325T1 (de) | Optische faser mit unregelmässigen kanten und verfahren zu ihrer herstellung | |
DE69709151D1 (de) | Verfahren zur herstellung von bragg gittern in eine optische faser | |
DE69230524T2 (de) | Optische faser mit brechungsindexverteilung und verfahren zur herstellung | |
DE69614382T2 (de) | Faseroptisches bandkabel und verfahren zur dessen herstellung | |
DE69630426D1 (de) | Dispersionskompensierende Faser und Verfahren zu ihrer Herstellung | |
DE69312094T2 (de) | Zusammengesetzte faser aus vermischten glasfasern und polytetrafluoroethylen und verfahren zu ihrer herstellung | |
DE69625155D1 (de) | Optische Einmodennachrichtenfaser und Verfahren zur Herstellung der Faser | |
DE69701796D1 (de) | Faserverbundwerkstoffe und verfahren zu ihrer herstellung | |
DE69625399T2 (de) | Optische Faser und Verfahren zu ihrer Herstellung | |
ATE192242T1 (de) | Verfahren zur herstellung eines in mehrere einheiten aufteilbaren optischen fiberbandmoduls | |
DE69528687T2 (de) | Faseroptischer Stecker und Verfahren zu seiner Herstellung | |
DE69915485D1 (de) | Faseroptisches kabel zur verwendung unter ungünstigen betriebszuständen | |
DE69617021T2 (de) | Optisches faserbändchenelement,verfahren zur dessen herstellung und verfahren zum zugang zu einerfaser mitten in einem solchen element | |
DE69424606T2 (de) | Polarisationserhaltende optische faser, herstellungsverfahren dafür, verbindungsverfahren dafür, optischer verstärker, laseroszillator und polarisationserhalter optischer faserkoppler | |
AU6152496A (en) | Optical fibre connector for fibres with cleaved and beveled ends | |
DE69512683D1 (de) | Faserstruktur mit mehreren zonen sowie vorrichtung und verfahren zu ihrer herstellung | |
DE69622498D1 (de) | Faseroptisches Strahlungstransmissionssystem, Verbindersystem für eine optische Faser und Verfahren zu ihrer Verwendung | |
DE69822556D1 (de) | Polybenzazolfaser mit hohem Zugelastizitätsmodul und Verfahren zu ihrer Herstellung | |
DE69308481T2 (de) | Überwachungseinrichtung zur optischer Bündelzentrierung, Verwendung zur Bündeleinführung in optische Faser | |
DE69924051D1 (de) | Faseroptischer Wellenlängenfilter und Verfahren zu dessen Herstellung | |
DE69832355D1 (de) | Verfahren zur herstellung einer optischen faser mit verteiltem brechungsindex | |
DE69033788T2 (de) | Optischer Faserkoppler und Verfahren zu seiner Herstellung | |
DE69606736D1 (de) | Verfahren zur Herstellung optischer Faser mit geringer Polarisationsdispersion | |
DE69311168D1 (de) | Optische Faser zum Anschluss an einen Wellenleiter und Verfahren zu ihrer Herstellung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |