公开(公告)号：AU521592B2

公开(公告)日：1982-04-22

申请号：AU6186380

申请日：1980-08-29

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： ROBA GIACOMO ,  VERGNANO PAOLO

IPC: C03B37/018 ,  C03B8/02 ,  C03B37/00 ,  C03B37/016 ,  C03B37/025 ,  C03C17/02 ,  C03C17/25 ,  C03C17/34 ,  G02B6/00 ,  G02B5/16

公开(公告)号：CA1147216A

公开(公告)日：1983-05-31

申请号：CA359121

申请日：1980-08-27

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： ROBA GIACOMO ,  VERGNANO PAOLO

IPC: C03B37/018 ,  C03B8/02 ,  C03B37/00 ,  C03B37/016 ,  G02B6/00 ,  C03B37/025 ,  C03C17/00 ,  G02B5/172

Abstract: Preforms for the formation of optical fibres having a controlled radial refractive index profile are produced by the cold deposition onto a cylindrical support of the solid reaction products of fluids selected and proportioned to be vitrifiable to a glass whose refractive index varies according to proportioning of the fluids, the deposited preform then being treated to remove its water content and vitrified. The deposition is achieved by directing the fluids through nozzles in a controlled atmosphere chamber towards either an inner or an outer surface of the cylindrical surface, the nozzles and the cylindrical surface being relatively translated and rotated during deposition to form successive layers of reaction products on the cylindrical surface.

公开(公告)号：IT7968789D0

公开(公告)日：1979-09-10

申请号：IT6878979

申请日：1979-09-10

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： ROBA GIACOMO ,  VERGNANO PAOLO

IPC: C03B8/02 ,  C03B37/018 ,  C03B37/00 ,  C03B37/016 ,  G02B6/00 ,  G02B

Abstract: The invention concerns a method of and an apparatus for the production of preforms to be drawn into optical fibres, used as light conductors in telecommunications. Main liquid reactants are sent with a liquid oxidant towards a cylindrical support to the attainment of a preform of the required size. Then by chemical and physical means residual water is eliminated and the preform is collapsed to form a cylindrical rod.

公开(公告)号：IT1119362B

公开(公告)日：1986-03-10

申请号：IT6878979

申请日：1979-09-10

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： ROBA GIACOMO ,  VERGNANO PAOLO

IPC: C03B8/02 ,  C03B37/018 ,  C03B37/00 ,  C03B37/016 ,  G02B6/00 ,  G02B

Abstract: The invention concerns a method of and an apparatus for the production of preforms to be drawn into optical fibres, used as light conductors in telecommunications. Main liquid reactants are sent with a liquid oxidant towards a cylindrical support to the attainment of a preform of the required size. Then by chemical and physical means residual water is eliminated and the preform is collapsed to form a cylindrical rod.

公开(公告)号：DE3064829D1

公开(公告)日：1983-10-20

申请号：DE3064829

申请日：1980-09-09

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： ROBA GIACOMO ,  VERGNANO PAOLO

IPC: C03B37/018 ,  C03B8/02 ,  C03B37/00 ,  C03B37/016 ,  G02B6/00 ,  C03B37/025 ,  C03C17/02

Abstract: The invention concerns a method of and an apparatus for the production of preforms to be drawn into optical fibres, used as light conductors in telecommunications. Main liquid reactants are sent with a liquid oxidant towards a cylindrical support to the attainment of a preform of the required size. Then by chemical and physical means residual water is eliminated and the preform is collapsed to form a cylindrical rod.