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Sumitomo Electric Industries Ltd patents (2018 archive)


Recent patent applications related to Sumitomo Electric Industries Ltd. Sumitomo Electric Industries Ltd is listed as an Agent/Assignee. Note: Sumitomo Electric Industries Ltd may have other listings under different names/spellings. We're not affiliated with Sumitomo Electric Industries Ltd, we're just tracking patents.

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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








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