(19)
(11) EP 0 223 853 A1

(12)

(43) Date of publication:
03.06.1987 Bulletin 1987/23

(21) Application number: 86904479.0

(22) Date of filing: 23.04.1986
(51) International Patent Classification (IPC): 
G02B 6/ 00( . )
C03C 1/ 00( . )
C03B 37/ 018( . )
C03C 13/ 04( . )
(86) International application number:
PCT/US1986/000865
(87) International publication number:
WO 1986/007348 (18.12.1986 Gazette 1986/27)
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 03.06.1985 US 19850740680

(71) Applicant: Hughes Aircraft Company
Los Angeles California 90045-0066 (US)

(72) Inventor:
  • BLAIR, Richard, G.
    Culver City, CA 90230 (US)

(74) Representative: KUHNEN, WACKER & PARTNER 
Alois-Steinecker-Strasse 22
D-85354 Freising
D-85354 Freising (DE)

   


(54) METHOD FOR INTRODUCING DOPANTS IN OPTICAL FIBER PREFORMS