Draka Comteq B.v.

Draka Comteo B.v.

Drake Comteq, B.v.

Ray Lovie

Bob J Overton

Olaf Loy Storaasli

Jeff Barker

Charles J Welnack

Terry Holshouser, Sr

Jeffrey Scott Barker

William Mark Smartt

Disclosed is a fiber-optic cable that possesses a high cable filling coefficient (and/or a high cable fiber density) yet ensures that its enclosed optical fibers demonstrate improved attenuation performance when subjected to temperature variations between about &#x2212;40&#xb0; C. and 70&#xb0; C. The fiber-optic cable is suitable for efficient installation into ducts, such as via blowing.

High-fiber-density optical fiber cable

A cable system and method including a cable or a microduct provided within the groove extending vertically into, but not through, a pavement. The cable has a central strength member, at least one buffer tube stranded around the central strength member, an outerjacket surrounding the buffer tube and central strength member, and at least one transmission element provided within said at least one buffer tube. Provided within the microduct is a microduct cable including at least one transmission element. A cable including a central strength member, at least one buffer tube stranded around the central strength member, an outer jacket surrounding the buffer tube and central strength member, and at least one transmission element provided within said at least one buffer tube. The cable has a longitudinal thermal expansion force due to a change in temperature from 20&#xb0; C. to 70&#xb0; C. of less than 305 lbs when constrained.

Microduct cable system having reduced thermal expansion force

A cable system and method including a cable or a microduct provided within the groove extending vertically into, but not through, a pavement. The cable has a central strength member, at least one buffer tube stranded around the central strength member, an outer jacket surrounding the buffer tube and central strength member, and at least one transmission element provided within said at least one buffer tube. Provided within the microduct is a microduct cable including at least one transmission element. A cable including a central strength member, at least one buffer tube stranded around the central strength member, an outer jacket surrounding the buffer tube and central strength member, and at least one transmission element provided within said at least one buffer tube. The cable has a longitudinal thermal expansion force due to a change in temperature from 20&#xb0; C. to 70&#xb0; C. of less than 305 lbs when constrained.

Groove cable having a predetermined longitudinal thermal expansion force

A method of installing a cable including at least one communication element, such as an optical fiber, disposed in a buffer tube and a surrounding jacket. The method includes the steps of exposing a portion of the buffer tube over a predetermined length and forming the exposed portion of the buffer tube into a coupling coil having at least one loop. The cable installation method prevents fiber retraction in cable terminations by utilizing at least one coupling coil formed from the exposed buffer tube and advantageously yields coupling coil terminations with small diameter coils, requiring less cable for more efficient installation, and further provides for the coupling coil to be located within a splice closure for more visually pleasing terminations. Preferably, coupling coils are formed at each end of the cable and located in splice enclosures.

Use of buffer tube coupling coil to prevent fiber retraction

Groove cable

Growing community of inventors

Hickory, NC, United States of America

Ray Lovie