Peter Kaiser

US Patent:

40309010, Jun 21, 1977

Filed:

Jul 19, 1976

Appl. No.:

5/706927

Inventors:

Peter Kaiser - Middletown NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

C03B 3702

US Classification:

65 2

Abstract:

A method for drawing silica fibers utilizing an electrical resistance furnace includes the steps of heating a preform so that it begins to flow forming a fiber; pulling the fiber from the furnace; and flushing the preform and the fiber within the furnace with counteracting inert gas flows, the gas flows protecting the preform and the fiber from contamination. Apparatus used with the above-described method is also disclosed.

US Patent:

39690164, Jul 13, 1976

Filed:

May 9, 1975

Appl. No.:

5/576043

Inventors:

Peter Kaiser - Middletown NJ
Enrique Alfredo Jose Marcatili - Rumson NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

G02B 514

US Classification:

350 96WG

Abstract:

The disclosure is directed to optical fiber waveguiding structures, and techniques for fabricating the same, which are designed to have reduced modal dispersion as a result of the deliberate enhancement of mode coupling in the fibers. The mode coupling is achieved in each of the structures by means of an enveloping outer jacket, typically of plastic, which is selectively deformed so as to modify the straightness of the fiber axes in a spatially periodic manner. Several alternative techniques are presented for properly deforming the outer jacket either before or after it is combined with the fibers. Since, with these structures and techniques, the outer jacket provides the desired fiber perturbations, the fibers themselves can be fabricated using standard techniques without the need for any special procedures for modifying their parameters.