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公开(公告)号:US11125942B2
公开(公告)日:2021-09-21
申请号:US16453555
申请日:2019-06-26
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Yasuyoshi Uchida , Yuuki Taniguchi , Hiroshi Kawashima , Kazutaka Nara , Masanori Takahashi
IPC: G02B6/02 , G02B6/10 , G02B6/12 , G02B6/14 , G02B6/27 , C03C14/00 , G02B6/122 , G02B6/136 , G02B6/293 , G02B6/28 , G02B6/125
Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
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公开(公告)号:US10545292B2
公开(公告)日:2020-01-28
申请号:US16145489
申请日:2018-09-28
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Masanori Takahashi , Yasuyoshi Uchida , Shintaro Yamasaki , Junichi Hasegawa
Abstract: An optical waveguide circuit device includes: an optical waveguide circuit including a cladding layer formed on a substrate and made from silica-based glass, and an optical waveguide formed within the cladding layer and made from silica-based glass; heaters formed over the cladding layer and the optical waveguide and configured to heat the optical waveguide; wiring line electrode layers formed over the cladding layer, each of the wiring line electrode layers being coupled to a corresponding heater of the heaters and configured to allow electrical power to be supplied to the coupled heater; and an insulating layer covering the cladding layer, the heaters, and the wiring line electrode layers. The wiring line electrode layers adjacent to each other in a plan view are formed in different wiring layers. The wiring line electrode layers adjacent to each other in the same wiring layer are spaced by at least a predetermined distance.
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公开(公告)号:US20190331852A1
公开(公告)日:2019-10-31
申请号:US16506768
申请日:2019-07-09
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Yasuyoshi Uchida , Junichi Hasegawa
Abstract: A cross optical waveguide structure includes a first optical waveguide, a second optical waveguide, and an intersection portion positioned in the same plane. The first optical waveguide includes a first fixed-width portion, a second fixed-width portion, a first tapering portion, and a second tapering portion. The second optical waveguide includes a third fixed-width portion, a fourth fixed-width portion, a third tapering portion, and a fourth tapering portion. The intersection portion is linked to the first to the fourth tapering portions having such a tapering shape that a mode field radius of the light input to the first fixed-width portion, the second fixed-width portion, or the third fixed-width portion, and the fourth fixed-width portion is reduced by the first tapering portion, the second tapering portion, the third tapering portion, the fourth tapering portion, respectively, and the light is collected in the intersection portion.
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公开(公告)号:US11054578B2
公开(公告)日:2021-07-06
申请号:US16506768
申请日:2019-07-09
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Yasuyoshi Uchida , Junichi Hasegawa
Abstract: A cross optical waveguide structure includes a first optical waveguide, a second optical waveguide, and an intersection portion positioned in the same plane. The first optical waveguide includes a first fixed-width portion, a second fixed-width portion, a first tapering portion, and a second tapering portion. The second optical waveguide includes a third fixed-width portion, a fourth fixed-width portion, a third tapering portion, and a fourth tapering portion. The intersection portion is linked to the first to the fourth tapering portions having such a tapering shape that a mode field radius of the light input to the first fixed-width portion, the second fixed-width portion, or the third fixed-width portion, and the fourth fixed-width portion is reduced by the first tapering portion, the second tapering portion, the third tapering portion, the fourth tapering portion, respectively, and the light is collected in the intersection portion.
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公开(公告)号:US09417388B2
公开(公告)日:2016-08-16
申请号:US14961248
申请日:2015-12-07
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Shintaro Yamasaki , Kazutaka Nara , Masanori Takahashi , Yasuyoshi Uchida
CPC classification number: G02B6/1228 , G02B6/14 , G02B6/305
Abstract: A spot-size-converting optical waveguide includes a core portion. A first core portion of the core portion has a first straight portion and a first tapered portion. The first straight portion extends in a direction, having width and height that are approximately constant in the direction, and the first tapered portion is continuous with the first straight portion and decreases in width and height toward a termination portion. A second core portion of the core portion has a straight-portion-coating portion, a tapered-portion-coating portion, and a second tapered portion, the straight-portion-coating portion covers the first straight portion, the tapered-portion-coating portion covers the first tapered portion continuously with the straight-portion-coating portion and decreases in width and height along the first tapered portion's shape, and the second tapered portion increases in width and height toward the direction. A refractive index of the second core portion is lower than that of the first core portion.
Abstract translation: 点尺寸转换光波导包括芯部分。 芯部的第一芯部具有第一直线部分和第一锥形部分。 所述第一直线部分沿着所述方向上的宽度和高度近似恒定的方向延伸,并且所述第一锥形部分与所述第一直线部分连续并且朝向终端部分的宽度和高度减小。 芯部的第二芯部具有直线部分涂覆部分,锥形部分涂覆部分和第二锥形部分,直线部分涂覆部分覆盖第一直线部分,锥形部分涂覆部分 第一锥形部分与直线涂覆部分连续地覆盖第一锥形部分,并且沿着第一锥形部分的形状减小了宽度和高度,并且第二锥形部分朝向该方向的宽度和高度增加。 第二芯部的折射率低于第一芯部的折射率。
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公开(公告)号:US10371890B2
公开(公告)日:2019-08-06
申请号:US15145482
申请日:2016-05-03
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Yasuyoshi Uchida , Yuuki Taniguchi , Hiroshi Kawashima , Kazutaka Nara , Masanori Takahashi
IPC: G02B6/02 , G02B6/10 , G02B6/12 , G02B6/14 , G02B6/293 , G02B6/28 , G02B6/27 , C03C14/00 , G02B6/122 , G02B6/136
Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
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公开(公告)号:US20160085026A1
公开(公告)日:2016-03-24
申请号:US14961248
申请日:2015-12-07
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Shintaro Yamasaki , Kazutaka Nara , Masanori Takahashi , Yasuyoshi Uchida
IPC: G02B6/122
CPC classification number: G02B6/1228 , G02B6/14 , G02B6/305
Abstract: A spot-size-converting optical waveguide includes a core portion. A first core portion of the core portion has a first straight portion and a first tapered portion. The first straight portion extends in a direction, having width and height that are approximately constant in the direction, and the first tapered portion is continuous with the first straight portion and decreases in width and height toward a termination portion. A second core portion of the core portion has a straight-portion-coating portion, a tapered-portion-coating portion, and a second tapered portion, the straight-portion-coating portion covers the first straight portion, the tapered-portion-coating portion covers the first tapered portion continuously with the straight-portion-coating portion and decreases in width and height along the first tapered portion's shape, and the second tapered portion increases in width and height toward the direction. A refractive index of the second core portion is lower than that of the first core portion.
Abstract translation: 点尺寸转换光波导包括芯部分。 芯部的第一芯部具有第一直线部分和第一锥形部分。 所述第一直线部分沿着所述方向上的宽度和高度近似恒定的方向延伸,并且所述第一锥形部分与所述第一直线部分连续并且朝向终端部分的宽度和高度减小。 芯部的第二芯部具有直线部分涂覆部分,锥形部分涂覆部分和第二锥形部分,直线部分涂覆部分覆盖第一直线部分,锥形部分涂覆部分 第一锥形部分与直线涂覆部分连续地覆盖第一锥形部分,并且沿着第一锥形部分的形状减小了宽度和高度,并且第二锥形部分朝向该方向的宽度和高度增加。 第二芯部的折射率低于第一芯部的折射率。
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公开(公告)号:US10444430B2
公开(公告)日:2019-10-15
申请号:US16145519
申请日:2018-09-28
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Yasuyoshi Uchida , Junichi Hasegawa
Abstract: An optical waveguide structure includes: a cladding; a first core in the cladding having a first end surface; a second core in the cladding having a second end surface; slit formed horizontally with respect to a waveguide direction of the light to be waveguided by the first and second cores; and a first part and a second part composed of a material identical to a material of the cladding, wherein a pair of the first and second end surfaces disposed opposing each other with the slit interposed between the pair of the first and second end surfaces, the first part is interposed between the first end surface and the slit, and the second part is interposed between the second end surface and the slit.
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公开(公告)号:US09354395B2
公开(公告)日:2016-05-31
申请号:US14189127
申请日:2014-02-25
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor: Yasuyoshi Uchida , Yuuki Taniguchi , Hiroshi Kawashima , Kazutaka Nara , Masanori Takahashi
CPC classification number: G02B6/136 , G02B6/122 , G02B2006/121
Abstract: An optical waveguide element includes a cladding portion made of a silica-based glass, and an optical waveguide positioned in the cladding portion and made of a silica-based glass in which a ZrO2 particle is dispersed.
Abstract translation: 光波导元件包括由二氧化硅基玻璃制成的包层部分和位于包覆部分中并分散有ZrO 2颗粒的二氧化硅基玻璃制成的光波导。
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