Title:
水素感度が低下した光ファイバを製造する方法
Document Type and Number:
Japanese Patent JP6450383
Kind Code:
B2
Abstract:
A method of making optical fibers that includes controlled cooling to produce fibers having a low concentration of non-bridging oxygen defects and low sensitivity to hydrogen. The method may include heating a fiber preform above its softening point, drawing a fiber from the heated preform and passing the fiber through two treatment stages. The fiber may enter the first treatment stage at a temperature between 1500° C. and 1700° C., may exit the first treatment stage at a temperature between 1200° C. and 1400° C., and may experience a cooling rate less than 5000° C./s in the first treatment stage. The fiber may enter the second treatment stage downstream from the first treatment stage at a temperature between 1200° C. and 1400° C., may exit the second treatment stage at a temperature between 1000° C. and 1150° C., and may experience a cooling rate between 5000° C./s and 12,000° C./s in the second treatment stage. The method may also include redirecting the fiber with a fluid bearing device or an air-turn device.
Inventors:
Dunwoody, Stephen Akin
Moore, Robert Clark
Tandon, Pushkar
Moore, Robert Clark
Tandon, Pushkar
Application Number:
JP2016533333A
Publication Date:
January 09, 2019
Filing Date:
July 31, 2014
Export Citation:
Assignee:
CORNING INCORPORATED
International Classes:
C03B37/027; C03B37/023; G02B6/02
Domestic Patent References:
| JP2000335935A | ||||
| JP2001192230A | ||||
| JP2011505326A |
Foreign References:
| WO2004007383A1 |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma