Optical data bus having collision detection capability

Details Optical data bus having collision detection capability Optical data bus having collision detection capability

1993-09-13

1995-05-09

Ullah, Akm E.

Optical waveguides

With optical coupler

Plural

359127, 25022711, G02B 600, G02B 636

Patent

active

054147859

ABSTRACT:
An optical fiber communication system comprises a bus to which are connected two or more individual stations with inputs from the bus and outputs to the bus. Each station includes an optical coupler, folded by means of a partially transmissive mirror, wherein the inputs and outputs are optically coupled. A light energy source applies optical energy to the bus which passes through each station by means of the optical coupler associated therewith. Each station includes means for modulating the light energy on the bus by varying the optical coupling, and each station has detector means for receiving optical energy passing through the mirror and detecting the presence or absence of modulated signals on the bus. Control means at each station initiates operating commands on the basis of the energy detected by the detector means.

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