Abstract: A variable optical attenuator is described. A special profile blocker is rotated across a large angel (e.g., 180° to 360°) to provide a variable amount of attenuation. In one embodiment, the special profile blocker is an eccentrically driven wheel. The special profile blocker is driven by a stepper motor via a gear assembly. In one embodiment, the variable optical attenuator includes a beam splitter for the input and/or the output signal for monitoring of signal strength and/or feedback control of the attenuator.

Abstract: A crumb collection tray to be placed underneath a conventional toaster after first removing its trap door, therefore allowing all crumbs to drop into the collection tray. After toasting, a simple dumping of the tray in the sink disposes of all crumbs in one simple act. The tray is equipped with a handle, a foot, and wheels which allow ease in mobility and prevent the counter from becoming scratched by otherwise dragging the crumb collection tray across the counter top. The crumb collection tray allows for easy cleaning after every use, disposing of crumbs that would otherwise attract bugs.