Accession Number : ADD008476

Title :   Fail-Safe Optical Repeater-Amplifier Assembly for Fiber Optic Systems.

Descriptive Note : Patent,


Personal Author(s) : Altman,Daniel E

Report Date : 20 Jan 1981

Pagination or Media Count : 8

Abstract : In an optical data bus system, a fail-safe optical repeater-amplifier assembly is provided by light energy amplifying means connected in the data bus for developing gain of signal strength for light signals transmitted along the data bus in a known direction. The light energy amplifying means is connected in parallel with a passive, non-amplifying light path, the light path having an optical length for impressing a delay on light signals passing therethrough which is substantially equal to the optical delay imposed by transmission through the light energy amplifying means. The fail-safe optical repeater-amplifier assembly can be of unidirectional or bidirectional type; the passive non-amplifying light path connected in parallel with the light energy amplifying means can include partially reflective surfaces to provide divsion of light signals out of the passive non-amplifying light path or in both directions to provide embodiments of the present invention in the form of either a unidirectional or bidirectional tee coupler. (Author)

Descriptors :   *Patents, *Fiber optics, *Amplifiers, *Repeaters, Fail safe, Light pulses, Light transmission, Assembly, Waveguide couplers, Information transfer, Naval vessels

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE