Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1988-06-14
1989-10-03
Schor, Kenneth M.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 182, 427 38, 427163, 427237, C03B 37018
Patent
active
048713830
ABSTRACT:
Polarization-retaining optical fibres are manufactured according to the PCVD method, in which on the inside of a glass tube (1) and, simultaneously on at least two glass rods (2, 3) which are arranged inside the glass tube such that their longitudinal axes run parallel to the longitudinal axis of the glass tube, glass is deposited in layers and the glass rods are removed from the glass tube upon completion of the glass deposition process. Alternatively, a single glass rod, the radial dimensions of which in two mutually perpendicular directions are in a ratio unequal to one, is arranged in a glass tube such that its longitudinal axis coincides with the longitudinal axis of the glass tube.
REFERENCES:
patent: Re30635 (1981-06-01), Kuppers
patent: 4263032 (1981-04-01), Sinclair
patent: 4417911 (1983-11-01), Cundy
patent: 4741747 (1988-05-01), Geittner
Bachmann Peter K.
Hagemann Hans-Jurgen E.
Warnier Jacques P. M.
Wilson Howard J. C.
Bartlett Ernestine C.
Schor Kenneth M.
U.S. Philips Corp.
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