Accession Number : ADD011576

Title :   Device for Controlling Optical Fiber Twist on a Bobbin.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Hunter,J S ; Ruffin,P B

Report Date : 24 Dec 1984

Pagination or Media Count : 21

Abstract : This patent application describes a device for controlling the twist associated with optical fiber being wound on a bobbin is disclosed. Signal transmission analysis in fibers wound on bobbins require techniques not normally encountered when considering long straight fibers. Signal loss on a fiber cable payout assembly is mainly due to small bends in the fiber at crossover positions and in the transmition regions where the winding travel changes directions. The signal attenuation in a length of optical fiber is also known to be a function of the amount of twist in the fiber both in the wound and payed out states. This invention allows the amount of twist of the optical fiber to be precisely controlled from zero to full (360 degrees twist per turn of the bobbin) twist to provide optimum signal transmission for both the wound and payed out states.

Descriptors :   *PATENT APPLICATIONS, *FIBER OPTICS TRANSMISSION LINES, *CABLE ASSEMBLIES, SIGNAL PROCESSING, CONTROL, INVENTIONS, FIBER OPTICS, OPTIMIZATION, ATTENUATION, SIGNALS, REELS, TWIST(MOTION), WINDING

Subject Categories : Electrical and Electronic Equipment
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE