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1.发明公开公开(公告)号：US20230305325A1
公开(公告)日：2023-09-28
申请号：US18021342
申请日：2021-09-28
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuji YAMANE , Shingo TAKANO
IPC: G02F1/035
CPC classification number: G02F1/035 , G02F2202/20 , G02F1/212
Abstract: To provide an optical waveguide device that is small, has low optical loss, and has long-term stability. Provided is an optical waveguide device in which an optical waveguide A (20) is formed on a first substrate (2), an end portion of the first substrate has an input portion that inputs a light wave into the optical waveguide A or an output portion that outputs a light wave from the optical waveguide A, an optical waveguide B (10) is formed on a second substrate (1), the second substrate has an optical modulation portion that modulates a light wave propagating through the optical waveguide B, and at least a part of the optical waveguide A (20) has a conversion portion (20) that converts an optical mode field diameter.
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公开(公告)号：US20200292752A1
公开(公告)日：2020-09-17
申请号：US16697219
申请日：2019-11-27
Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
Inventor： Yuji YAMANE , Norikazu MIYAZAKI , Yu Kataoka , Hideki ICHIMEI
Abstract: An optical waveguide element includes an optical waveguide which is formed on one surface of a substrate, an incidence part for light to be incident on the optical waveguide or an emission part for emitting light from the optical waveguide which is disposed in an end portion of the substrate, and a dielectric film which is formed on the optical waveguide of at least one of the incidence part and the emission part, and the vicinity thereof. Regarding the dielectric film, dielectric films including a dielectric film formed of a first material having an index of refraction higher than an index of refraction of the substrate and a dielectric film formed of a second material having an index of refraction lower than the index of refraction of the substrate are alternately laminated.
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公开(公告)号：US20130084036A1
公开(公告)日：2013-04-04
申请号：US13630193
申请日：2012-09-28
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Yuji YAMANE , Mitsuru SAKUMA , Tetsuya FUJINO , Takashi SHINRIKI
CPC classification number: G02F1/035 , Y10T156/1002
Abstract: An optical waveguide device using a thin substrate having an electro-optical effect and having a thickness of 10 μm or less, in which, even when the thin substrate is adhered to a supporting substrate, breakage of the thin substrate or supporting substrate is suppressed, and performance deterioration such as optical loss due to fine cracks is also suppressed. The optical waveguide device includes a thin substrate, which has an electro-optical effect and a thickness of 10 μm or less, and in which an optical waveguide is formed, and a supporting substrate that is adhered to the thin substrate through an adhesion layer. A structure is formed in a thin-substrate side surface of the supporting substrate, and the supporting substrate is annealed at a high temperature that is equal to or lower than the Curie temperature after forming the concavo-convex structure and before being adhered to the thin substrate.
Abstract translation: 使用具有电光效应并且具有10μm以下的厚度的薄基板的光波导装置，其中即使当薄基板粘附到支撑基板上时，也抑制了薄基板或支撑基板的断裂， 并且也抑制了由细裂纹引起的光学损失等性能劣化。 光波导装置包括具有电光效应和10μm以下的厚度的薄基板，其中形成有光波导，并且通过粘合层粘附到薄基板上的支撑基板。 在支撑基板的薄基板侧表面上形成结构，并且在形成凹凸结构之后并且在粘附到薄板之前，在等于或低于居里温度的高温下对支撑基板进行退火 基质。
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公开(公告)号：US20190302491A1
公开(公告)日：2019-10-03
申请号：US16367762
申请日：2019-03-28
Applicant: Sumitomo Osaka Cement Co., Ltd.
Inventor： Yuji YAMANE , Tetsuya FUJINO , Hideki ICHIMEI
IPC: G02F1/035
Abstract: An optical control element including an optical waveguide formed by using diffusion of titanium that is formed on a lithium niobate substrate and a control electrode formed on the lithium niobate substrate that is provided in the vicinity of the optical waveguide, in which an amount of a hydroxyl group absorbed into the lithium niobate substrate is set to be in a range of 0.5 to 2.5 cm−1.
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