An optical readwrite apparatus causes a readwrite light beam from illuminating means to strike only one side of an optical storage medium including stacked data storage layers each of which is readablewriteable separately from the other layers. The nanorod light emitting device may include at least one nitride semiconductor layer, light emitting nanorods formed on the nitride semiconductor layer and spaced apart from each other, and a first filling layer, a conductive layer, and a second filling layer formed in spaces between the light emitting nanorods. The irradiating component is configured and arranged to irradiate inspection waves to the package group with the inspection waves being X-rays or terahertz waves. The interconnection fabric interconnects the plurality of duplex switches so that each duplex switch is connected to every other duplex switch used in the interconnection fabric by a single connection.