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公开(公告)号：US20190271897A1
公开(公告)日：2019-09-05
申请号：US16410926
申请日：2019-05-13
Applicant: TDK Corporation
Inventor： Shinji IWATSUKA , Kenji SASAKI , Satoshi SHIRAI
Abstract: Disclosed herein is an optical waveguide element that includes a substrate and a waveguide layer formed on the substrate and comprising lithium niobate. The waveguide layer has a slab part having a predetermined thickness and a ridge part protruding from the slab part. The maximum thickness of the slab part is 0.05 times or more and less than 0.4 times a wavelength of a light propagating in the ridge part.
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