Accession Number : ADD018256

Title :   Single In-Line Fiber-Optic Rotary Joint.

Descriptive Note : Patent, Filed 14 Jul 95, patented 3 Sep 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : DeMarco, James S , Jr

Report Date : 03 Sep 1996

Pagination or Media Count : 5

Abstract : A single in-line fiber-optic rotary joint includes inner and outer concentric body portions which are rotatable relative to each other around a common longitudinal axis. An optical to electrical converter is mounted in the inner body portion and it is operative for receiving an incoming optical signal and converting it to a corresponding electrical signal. A light source mounted along the longitudinal axis of the inner body portion receives the converted electrical signal and emits a corresponding light signal along the longitudinal axis. A light detector is positioned along the longitudinal axis in the outer body portion wherein it receives the light signal and generates a corresponding electrical signal. The electrical signal from the light detector is received by an electrical to optical converter which converts the electrical signal back to an optical signal, thus establishing a complete pathway through the rotary joint.

Descriptors :   *FIBER OPTICS, *ELECTROOPTICS, *PATENTS, *WAVEGUIDE COUPLERS, OPTICAL EQUIPMENT, LIGHT SOURCES, CONVERTERS

Subject Categories : Fiber Optics and Integrated Optics
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE