Sumitomo Electric Industries Ltd patents

Optical switch, optical switching apparatus

An optical switch comprises: a first optical absorbing layer sensitive to a first light, first optical absorbing layer including a first superlattice structure and having a first bandgap; a second optical absorbing layer sensitive to a second light, the second optical absorbing layer having a second bandgap smaller than that of the first bandgap; and a barrier layer including a second superlattice structure, the first optical absorbing layer, the second optical absorbing layer, and the barrier layer being arranged in a direction of a first axis to form an arrangement, the arrangement forming a first band-offset in a conduction band of the first optical absorbing layer, a second band-offset in a conduction band of the first optical absorbing layer, and a well in a conduction band of the second optical absorbing layer.. . ... Sumitomo Electric Industries Ltd

Wire module

An object of the present invention is to further stabilize the fixed state of a protection member and an electrical wire in a wire module that includes a protection member having a hollow structure. The wire module includes an electrical wire portion and a protection member. ... Sumitomo Electric Industries Ltd

High electron-mobility transistor

A nitride semiconductor device is disclosed. The semiconductor device provides the gan channel layer, the inaln barrier layer on the gan channel layer, and the n-type algan layer on the inaln barrier layer. ... Sumitomo Electric Industries Ltd