Patent ID: 6975785
Filing Date: 2005-12-13
Classification: G02B,H04Q

Abstract:
1. A fiber optic control system comprising: an optical input waveguide for providing an emitted optical beam; a beam direction control element, for controllably directing the optical beam emitted from the input optical waveguide; a plurality of output elements, each for coupling the directed optical beam into an associated output optical waveguide; control inputs, associated with at least one beam direction control element, to effect a change in direction of the optical beam towards a selected one of the output elements; a detector, for determining a level of optical power coupled thereby to the selected output optical waveguide; and a controller, for applying control signals to the control inputs, the controller having a first mode and second mode corresponding to an open-loop operating mode and a closed-loop operating mode, respectively, the first mode generating the control signals without feedback from the optical power detector, and the second mode generating control signals that are determined by monitoring a detected optical power level and changing the control signals in response thereto.