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1. 发明申请

US20230069468A1 OPTICAL WAVEGUIDE ELEMENT AND OPTICAL MODULATION ELEMENT 有权
公开(公告)号：US20230069468A1
公开(公告)日：2023-03-02
申请号：US17797213
申请日：2021-01-20
申请人： TDK Corporation
发明人： Shinji Iwatsuka , Hiroki HARA , Anthony Reymund Melad BINARAO , Cheng Bu HENG , Hiroshi TAKE , Kenji NAGASE
IPC分类号： G02F1/035
摘要： An optical waveguide element includes: an optical waveguide having a ridge part and a slab part having a thickness less than the ridge part. The optical waveguide includes: a first waveguide having a first ridge with and a first slab film thickness; a second waveguide having a second ridge width and a second slab film thickness; a first intermediate waveguide connected to the first waveguide and having a third ridge width and the first slab film thickness; and a second intermediate waveguide connected to the second waveguide and having a fourth ridge width and the second slab film thickness. The first waveguide, the first intermediate waveguide, the second intermediate waveguide, and the second waveguide are arranged in this order; the second slab film thickness is larger than the first slab film thickness; and the third ridge width is larger than the fourth ridge width.

2. 发明申请

US20230036811A1 OPTICAL MODULATOR 有权
公开(公告)号：US20230036811A1
公开(公告)日：2023-02-02
申请号：US17716440
申请日：2022-04-08
申请人： TDK CORPORATION
发明人： Kenji NAGASE , Hiroshi TAKE , Anthony Reymund Melad BINARAO , Cheng Bu HENG
IPC分类号： G02F1/225 , G02F1/035 , G02F1/21
摘要： The invention relates to an optical modulator. The optical modulator comprising: a substrate; an electro-optical material layer formed on a predetermined region of the substrate; a buffer layer formed on the substrate which is provided so as to cover the electro-optical material layer; and an electrode formed on the buffer layer, and the electro-optical material layer has a RF portion optical waveguide which is applied with a modulation signal and is patterned, and a DC portion optical waveguide which is applied with a DC voltage and is patterned, the electrode has an RF portion electrode formed on the buffer layer where the RF portion optical waveguide is located and a DC portion electrode formed on the buffer layer where the DC portion optical waveguide is located, the film thickness of the DC portion electrode is smaller than the film thickness of the RF portion electrode. According to the present invention, an optical modulator which can suppress electrical crosstalk caused by the noise signal generated in the DC portion electrode and can improve high-frequency characteristics and achieve a widening of bandwidth of the optical frequency band in the high-frequency signals propagating in the RF portion electrode is provided.

3. 发明申请

US20220326554A1 ELECTRO-OPTICAL DEVICE 有权
公开(公告)号：US20220326554A1
公开(公告)日：2022-10-13
申请号：US17707117
申请日：2022-03-29
申请人： TDK CORPORATION
发明人： Hiroshi TAKE , Kenji NAGASE , Anthony Reymund Melad BINARAO , Cheng Bu HENG
IPC分类号： G02F1/035 , G02F1/21 , G02F1/225
摘要： An electro-optical device includes a substrate, an optical waveguide formed on the substrate, a buffer layer formed on the substrate which is provided so as to cover the optical waveguide and an electrode formed on the buffer layer, when viewed in a propagation direction of light, a side surface of the optical waveguide has at least one slope change point. An electro-optical device can reduce the driving voltage and provide the propagation loss of light.

4. 发明申请

US20220317358A1 OPTICAL DEVICE 有权
公开(公告)号：US20220317358A1
公开(公告)日：2022-10-06
申请号：US17707055
申请日：2022-03-29
申请人： TDK CORPORATION
发明人： Kenji NAGASE , Hiroshi TAKE , Anthony Reymund Melad BINARAO , Cheng Bu HENG
IPC分类号： F21V8/00
摘要： An optical device including: a substrate; an optical waveguide formed at the substrate; and a protective layer formed adjacent to the optical waveguide, wherein the optical waveguide includes multiple side surfaces that intersect the substrate, at least one side surface of the optical waveguide is provided with a rough surface. According to the optical device of the present invention, the light propagation loss can be reduced.

5. 发明公开

US20240329306A1 OPTICAL DEVICE 审中-公开
公开(公告)号：US20240329306A1
公开(公告)日：2024-10-03
申请号：US18620035
申请日：2024-03-28
申请人： TDK CORPORATION
发明人： Shuntaro KODAMA , Hiroshi TAKE , Kenji NAGASE , Ryohei FUKUZAKI
IPC分类号： G02B6/122 , G02B6/12
CPC分类号： G02B6/122 , G02B2006/12097
摘要： An optical device includes: a substrate having a pair of main surfaces opposite each other in a first direction and an end surface adjacent to the main surface, and an optical waveguide formed on the substrate and having a light incident surface or a light exit surface in a direction of a plane where the end surface is located, where at least a central portion of the light incident surface and/or light exit surface of the optical waveguide includes an inclined surface having a preset angle with respect to the end surface of the substrate.

6. 发明公开

US20230375781A1 ELECTRO-OPTIC DEVICE 审中-公开
公开(公告)号：US20230375781A1
公开(公告)日：2023-11-23
申请号：US18028354
申请日：2021-09-29
申请人： TDK CORPORATION
发明人： Hiroshi TAKE , Kenji NAGASE , Anthony Reymund Melad BINARAO , Cheng Bu HENG
IPC分类号： G02B6/12
CPC分类号： G02B6/12007 , G02B2006/12097
摘要： An electro-optic device which is provided with: a substrate, an optical waveguide formed on the substrate, and an upper electrode formed on the optical waveguide. The electro-optic device is further provided with a buffer layer formed between the substrate and the upper electrode, and a boundary portion of the optical waveguide and the buffer layer forms an oxide layer different from the optical waveguide and the buffer layer in composition.

7. 发明公开

US20230296929A1 OPTICAL MODULATION ELEMENT 审中-公开
公开(公告)号：US20230296929A1
公开(公告)日：2023-09-21
申请号：US18164712
申请日：2023-02-06
申请人： TDK Corporation
发明人： Hiroki HARA , Takashi KIKUKAWA , Hiroshi TAKE , Kenji NAGASE , Shuntaro KODAMA
IPC分类号： G02F1/03 , G02F1/035 , G02F1/21 , G02F1/225
CPC分类号： G02F1/0305 , G02F1/035 , G02F1/212 , G02F1/2255 , G02F2202/20
摘要： An optical modulation element is provided with a substrate, a waveguide layer formed on the substrate, a dielectric layer formed on the waveguide layer, and an electrode formed on the dielectric layer. An outer peripheral end portion of the dielectric layer has an offset area positioned inside an outer peripheral end portion of the substrate. In at least a part of the offset area, a distance from the outer peripheral end portion of the substrate to the outer peripheral end portion of the dielectric layer is equal to or less than a distance from the outer peripheral end portion of the substrate to the outer peripheral end portion of the electrode.

8. 发明申请

US20230112785A1 ELECTRO-OPTICAL DEVICE 有权
公开(公告)号：US20230112785A1
公开(公告)日：2023-04-13
申请号：US17914140
申请日：2021-03-31
申请人： TDK CORPORATION
发明人： Kenji NAGASE , Hiroshi TAKE
IPC分类号： G02F1/035 , G02F1/03 , G02F1/21
摘要： An electro-optical device, including: a substrate; an optical waveguide film formed of electro-optical material provided in a predetermined region on the substrate; a buffer layer provided adjacent to the optical waveguide film; and an electrode for applying an electric field to the optical waveguide film, and a non-light-transmission optical waveguide film is provided outside the predetermined region. According to the electro-optical device of the present disclosure, the propagation loss of light can be suppressed.

9. 发明申请

US20230057036A1 OPTICAL MODULATION ELEMENT 有权
公开(公告)号：US20230057036A1
公开(公告)日：2023-02-23
申请号：US17797207
申请日：2021-01-20
申请人： TDK Corporation
发明人： Anthony Reymund Melad Binarao , Cheng Bu HENG , Hiroshi TAKE , Kenji NAGASE , Shinji IWATSUKA , Hiroki HARA
IPC分类号： G02F1/21 , G02F1/225 , G02F1/035
摘要： To provide an optical modulation element whereby reduced drive voltage and suppression of DC drift can be obtained at the same time. An optical modulation element includes: a substrate; and an optical waveguide formed of an electrooptic material film formed on the substrate and having a ridge part which is a protruding portion, and a slab part having a smaller film thickness than the ridge part 11r. The optical waveguide includes a first waveguide part having a first ridge width and a first slab film thickness and to which an RF signal is applied, and a second waveguide part having a second ridge width and a second slab film thickness different from the first slab film thickness and to which a DC bias is applied.

10. 发明公开

US20240377696A1 OPTICAL DEVICE 审中-公开
公开(公告)号：US20240377696A1
公开(公告)日：2024-11-14
申请号：US18293020
申请日：2022-09-28
申请人： TDK CORPORATION
发明人： Hiroshi TAKE , Kenji NAGASE , Anthony Reymund Melad BINARAO , Cheng Bu HENG
IPC分类号： G02F1/225 , G02B6/12 , G02B6/125 , G02F1/21
CPC分类号： G02F1/2257 , G02B6/12014 , G02B6/125 , G02F1/212 , G02B2006/1204 , G02B2006/12045 , G02B2006/12097
摘要： An optical device, including a substrate and a plurality of optical waveguide paths formed on the substrate and having slab portions with different thicknesses.

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