Abstract: A system for controlling stocked items to be picked in a warehouse. The system has a first support assembly upon which a plurality of items can be stored in a predetermined array, including a plurality of rows, and from which stored items can be picked from a first location. The first support assembly has at least (a) a first state with no item upon the first support assembly, (b) a second state with at least one item in at least one of the rows and no items in another of the rows and (c) a third state with at least one item in each of the plurality of rows. The system includes a repositioning assembly that is operable to cause an item upon the first support assembly to be shifted from a first position in a first row to a second position in a second row. An item upon the first support assembly is situated to be more accessible to an operator for picking from the first location with the item in the second position than with the item in the first position.

Abstract: A system for performing high resolution measurement of frequency variations in multimode fiber laser acoustic sensors having an end-pumped active fiber sensor emitting a plurality of lasing modes, wherein precise frequencies of the lasing modes emitted are dependent upon a strain acting on said acoustic sensor. An optical fiber is connected to the active fiber sensor for transmitting the lasing modes. The optical fiber transmits the multiple lasing modes to an optical amplifier fiber where the lasing mode signals are amplified. The amplified lasing modes signals are then fed through a phase modulator connected to the optical fiber for applying a phase generated carrier on the lasing mode signals.