A crop dehydrator is disclosed that includes a large hollow cylinder, openable at one or both ends, that is air-tight and connected to an air-pump or vacuum pump capable of maintaining a moderate vacuum in the cylinder. The plurality of tabs allow the cord positioned therebetween to form a plurality of spaced eyelets along the length of the cord for attaching items thereto. And the connecting pad has a bonding portion adjacent to the hole and an exposed portion for testing. The BBN model is validated using the holdout set of claim data. The controllable optical delay applied to the optical signals results from control over the reflection point and the round-trip travel time for an optical signal forward propagating in the first waveguide, being reflected at the reflection point, and backward propagating in the second waveguide.