Title:
METHODS FOR DRAWING OPTICAL HOLLOW FIBRES UNDER REDUCED OR OVER-PRESSURE
Document Type and Number:
WIPO Patent Application WO2005012197
Kind Code:
A3
Abstract:
A method of drawing an optical fibre (310') or the like from an elongate pre-form (310), the fibre (310') and the pre-form (310) having at least one hole (311, 312) running along their lengths, includes the steps of heating the pre-form (310) and drawing the fibre (310') from the pre-form (310) while controlling the ambient pressure around the pre-form (310) to be significantly higher or significantly lower than it would be under standard fibre drawing conditions. As complement or alternative, the hok (311, 312) in the pre-form (310) can be pressurized with a highly diffusive gas.
Inventors:
BIRKS TIMOTHY ADAM (GB)
SABERT HENDRIK (GB)
SABERT HENDRIK (GB)
Application Number:
PCT/GB2004/003200
Publication Date:
July 14, 2005
Filing Date:
July 23, 2004
Export Citation:
Assignee:
BLAZEPHOTONICS LTD (GB)
BIRKS TIMOTHY ADAM (GB)
SABERT HENDRIK (GB)
BIRKS TIMOTHY ADAM (GB)
SABERT HENDRIK (GB)
International Classes:
C03B37/027; C03B37/029; G02B6/02; (IPC1-7): C03B37/025; C03B37/029; G02B6/20
Domestic Patent References:
| WO2002083583A1 | 2002-10-24 | |||
| WO2000049436A1 | 2000-08-24 |
Foreign References:
| US20020012512A1 | 2002-01-31 |
Other References:
BORZYCKI K: "Holey fibers - application issues", PROCEEDINGS OF 2001 3RD INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS, 18 June 2001 (2001-06-18), pages 92 - 95, XP010552228
PATENT ABSTRACTS OF JAPAN vol. 010, no. 362 (C - 389) 4 December 1986 (1986-12-04)
PATENT ABSTRACTS OF JAPAN vol. 010, no. 362 (C - 389) 4 December 1986 (1986-12-04)
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