Corning Optical Communications LLC

Corning Research & Development Corporation

Corning Cable Systems

Sebastian Olszewski

Bradley Jerome Blazer

Andrew Scott Dodd

Dieter Erwin Kundis

Marta Krystyna Tomczak

Anne Germaine Bringuier

Allen Michael Miller

Anna Lipiec

Katarzyna Synowiec

A communication cable is provided that retains low signal attenuation even after multiple cycles through significant temperature changes. The cable includes a communication element, a tight buffer element that surrounds the communication element, a strengthening element that surrounds the tight buffer element, an inner jacket that surrounds the strengthening element, and an outer jacket that surrounds the inner jacket. The outer jacket protects the interior components and is made of a hard material, and the inner jacket protects the communication element from the mechanical stresses of temperature-induced thermal expansion and contraction of the outer jacket.

Multilayer low attenuation drop cable

A fiber optic cable comprises a core subassembly comprising at least one optical fiber and a tube surrounding the optical fiber. A multi-layered jacket surrounds the core subassembly, wherein the jacket comprises an inner layer comprising a flame retardant (FR) material and an outer layer comprising a non flame retardant material having a lower coefficient of friction than the flame retardant material. A method of manufacturing an optical fiber cable includes providing a core subassembly and co-extruding a multi-layered jacket around the core subassembly, wherein the multi-layered jacket includes an inner layer comprising a flame retardant (FR) material and an outer layer comprising a non flame retardant material having a lower coefficient of friction than the flame retardant.

Coextruded jacket for flame retardant fiber optic cables

A method of manufacturing a fiber optic cable includes manufacturing a subunit and manufacturing an outer portion. Manufacturing the subunit includes extruding a subunit jacket over a first reinforcement material constraining an optical fiber. Manufacturing the outer portion of the fiber optic cable includes extruding an outer jacket over a second reinforcement material between the outer jacket and the subunit jacket. Hoop stress is applied to the second reinforcement material by the outer jacket, which constrains the second reinforcement material such that it is positioned and oriented to provide anti-buckling support to the fiber optic cable and mitigate effects on the optical fiber of jacket shrinkage due to low temperatures.

Method of manufacturing a fiber optic drop cable

A fiber optic cable includes a subunit and an outer portion. The subunit includes a subunit jacket defining a passageway interior thereto, an optical fiber extending through the passageway, and a first reinforcement material constraining the optical fiber within the subunit jacket such that the optical fiber and the subunit jacket are coupled to one another by way of the first reinforcement material. The outer portion of the fiber optic cable includes an outer jacket defining an outer periphery of the cable and a second reinforcement material between the outer jacket and the subunit jacket. The second reinforcement material includes fiberglass yarn, and hoop stress applied to the fiberglass yarn by the outer jacket constrains the fiberglass yarn such that it is positioned and oriented to provide anti-buckling support to the fiber optic cable and mitigate effects on the optical fiber of jacket shrinkage due to low temperatures.

Fiber optic drop cable

Growing community of inventors

Lodz, Poland

Sebastian Olszewski