Global Patent Index - EP 1073920 A1

EP 1073920 A1 2001-02-07 - METHOD OF MAKING OPTICAL FIBERS

Title (en)

METHOD OF MAKING OPTICAL FIBERS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON OPTISCHEN FASERN

Title (fr)

PROCEDE DE FABRICATION DE FIBRES OPTIQUES

Publication

EP 1073920 A1 (EN)

Application

EP 99917390 A

Priority

  • US 9907845 W
  • US 8269998 P

Abstract (en)

[origin: WO9954763A1] An optical fiber and method of making, wherein the optical fiber alternates between regions having different diameters along its length, wherein the refractive index of said blank and the diameters of said fiber are chosen to result in a fiber having alternating regions of positive and negative dispersion at a wavelength which is greater than 1480 nm, yet preferably has a low net dispersion and dispersion slope. A preferred such profile consists of a core region surrounded by a cladding region, said core region comprised of a central core region which is updoped with respect to said cladding region, said central core region surrounded by a moat region which is downdoped with respect to said cladding region, and said moat region is surrounded by an annular ring region which is updoped with respect to said cladding region.

IPC 1-7 (main, further and additional classification)

G02B 6/02; C03B 37/02

IPC 8 full level (invention and additional information)

G02B 6/00 (2006.01); C03B 37/025 (2006.01); C03B 37/027 (2006.01); G02B 6/02 (2006.01)

CPC (invention and additional information)

G02B 6/02242 (2013.01); C03B 37/0253 (2013.01); C03B 37/027 (2013.01); C03B 37/02736 (2013.01); G02B 6/02247 (2013.01); G02B 6/03611 (2013.01); G02B 6/03644 (2013.01); C03B 2203/06 (2013.01); C03B 2203/18 (2013.01); C03B 2203/24 (2013.01); C03B 2203/36 (2013.01); C03B 2205/40 (2013.01)

Citation (search report)

See references of WO 9954763A1

Designated contracting state (EPC)

CH DE DK FI FR GB IT LI NL SE

EPO simple patent family

WO 9954763 A1 19991028; AU 3552599 A 19991108; BR 9909523 A 20001212; CA 2326682 A1 19991028; CN 1300375 A 20010620; EP 1073920 A1 20010207; ID 29266 A 20010816; JP 2002512172 A 20020423; TW 417026 B 20010101; ZA 9902622 B 19991008

INPADOC legal status


2005-06-01 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040504

2001-02-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001002

2001-02-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE DK FI FR GB IT LI NL SE