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公开(公告)号：EP1666954A4
公开(公告)日：2007-03-07
申请号：EP04772548
申请日：2004-08-25
申请人： NGK INSULATORS LTD
发明人： AOKI KENJI , MITOMI OSAMU , KONDO JUNGO , KONDO ATSUO
CPC分类号： G02F1/2255 , G02F2203/25
摘要： An optical modulator (1C) is composed of an electrooptical material and comprises a substrate (2) having a first major surface and a second major surface, an optical waveguide formed on the substrate (2) and having a first branch section (5) and a second branch section (3), and earth electrodes (4A, 4C) and a signal electrode (4B) the three installed on the first major surface. The first and second branch sections (5, 3) are installed between the edge of earth electrode (4A) and the edge of the signal electrode (4B) and between the edge of the earth electrode (4C) and the edge of the signal electrode (4B), respectively. When a microwave eclectic field is applied to the interaction sections of the first and second branch sections (5, 3), the light propagating through the first and second branch sections (5, 3) is modulated. In this modulation, the integral values of the electric field intensities with respect to the electrode interaction lengths in the first and second branch sections, thereby giving a predetermined chirp amount.
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公开(公告)号：EP1768264A4
公开(公告)日：2011-04-06
申请号：EP05766484
申请日：2005-07-11
申请人： NGK INSULATORS LTD
发明人： KONDO JUNGO , MITOMI OSAMU , AOKI KENJI , YOSHINO TAKASHI , MATSUHIRO KEIJI
CPC分类号： H04B1/408 , G01S7/35 , G01S13/345 , G01S13/931 , G01S2013/9321 , G01S2013/9325 , H04B1/04 , H04B2001/0491 , H04B2210/006
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公开(公告)号：EP2116889A4
公开(公告)日：2011-10-05
申请号：EP08711429
申请日：2008-02-12
申请人： NGK INSULATORS LTD
发明人： MITOMI OSAMU , AOKI KENJI , KONDO JUNGO , IWATA YUICHI , EJIRI TETSUYA , IDE AKIYOSHI
IPC分类号： G02F1/035
CPC分类号： G02F1/0356 , G02F1/0316 , G02F2203/50
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公开(公告)号：EP1752817A4
公开(公告)日：2008-06-25
申请号：EP05737113
申请日：2005-04-20
申请人： NGK INSULATORS LTD
发明人： AOKI KENJI , KONDO JUNGO , KONDO ATSUO , MITOMI OSAMU
CPC分类号： G02F1/2255 , G02F1/0356 , G02F2203/25
摘要： A voltage is applied to a first branching part (3a) of an optical waveguide by a first grounding electrode (10) and a signal electrode (11), and a voltage is applied to a second branching part (3b) by a second grounding electrode (12A) and a signal electrode (11). A first gap (13) is formed between the first grounding electrode (10) and the signal electrode (11), and a second gap (14) is formed between the second grounding electrode (12A) and the signal electrode (11). The first gap (13) and the second gap (14) are divided into voltage applying parts (13a, 14a), a feed through part and connecting parts (13b, 14b), and satisfy (G12/G11
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5.发明公开
公开(公告)号：EP1657588A4
公开(公告)日：2007-11-14
申请号：EP04772177
申请日：2004-08-19
申请人： NGK INSULATORS LTD
发明人： KONDO JUNGO , KONDO ATSUO , AOKI KENJI , MITOMI OSAMU
CPC分类号： G02F1/0356 , G02F1/2255 , G02F2203/21
摘要： A device (4) comprising an electro-optical crystal substrate (5), optical waveguides (2) and modulating electrodes (1A, 1B, 1C), wherein the thickness of the electro-optical crystal substrate (5) in an electric field applying region (10) by at least modulating electrodes is up to 30 mum. When a product (H⋅W) of the height H (angstrom) of a protrusion produced at optical waveguide forming and the width W (mum) of the protrusion is set to be up to 7150 angstrom⋅mum, a light propagating through optical waveguides can be formed in a single mode. Further, optical waveguides have an branching portion in the electric field applying region and the interval between optical waveguides at the branching portion is set to be at least 46 mum, thereby, making it possible to limit a variation between the peak and bottom of a quenching ratio curve to within ±5%.
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公开(公告)号：EP1319973A4
公开(公告)日：2004-07-14
申请号：EP01965559
申请日：2001-09-06
申请人： NGK INSULATORS LTD
CPC分类号： G02F1/3137 , G02B6/1228 , G02B6/125
摘要： The spot size of light propagating through a crossing wave-guide (22) is set to be larger than the spot size of light propagating through optical input wave-guides (21a, 21b), optical output wave-guides (23a, 23b) or connection wave-guides (24a, 24b, 25a, 25b).
摘要翻译： 光学装置包括光输入波导，分支/交叉波导，光输出波导和将光输入和光输出波导连接到交叉/分支波导的连接波导。 通过交叉/分支波导传播的光的光斑尺寸大于通过光学输入波导，光学输出波导或连接波导传播的光的光斑尺寸。
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公开(公告)号：EP1795946A4
公开(公告)日：2010-12-15
申请号：EP05790189
申请日：2005-09-28
申请人： NGK INSULATORS LTD
发明人： MITOMI OSAMU , KONDO JUNGO , KONDO ATSUO , AOKI KENJI , EJIRI TETSUYA , IWATA YUICHI
CPC分类号： G02F1/035 , G02F1/0508
摘要： An optical functional device comprises a dielectric substrate 5, a ferroelectric thin layer 10 provided on the dielectric substrate 5 and comprising a material having electro-optical effect and an electrode 3A, 3B provided on the ferroelectric thin layer 10. A part of the ferroelectric thin layer 10 functions as a core 9 of the optical wave guide and the dielectric substrate functions as a clad for the optical waveguide. The optical waveguide 9 constitutes a multi-mode waveguide in the direction "D" of depth of the ferroelectric thin layer.
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公开(公告)号：EP1868025A4
公开(公告)日：2010-05-12
申请号：EP06714648
申请日：2006-02-20
申请人： NGK INSULATORS LTD
发明人： KONDO JUNGO , MITOMI OSAMU , AOKI KENJI , IWATA YUICHI , EJIRI TETSUYA
CPC分类号： G02F1/2255 , G02F1/0123 , G02F2001/212 , G02F2201/58 , G02F2203/20
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公开(公告)号：EP1953585A4
公开(公告)日：2009-06-17
申请号：EP06833096
申请日：2006-11-15
申请人： NGK INSULATORS LTD
发明人： AOKI KENJI , MITOMI OSAMU , KONDO JUNGO , IWATA YUICHI , EJIRI TETSUYA
CPC分类号： G02B6/12 , G02B2006/12104 , G02B2006/12142 , G02B2006/12159 , G02F1/0316 , G02F1/035 , G02F1/225 , G02F2203/02
摘要： In an optical waveguide device having an optical waveguide returned at the end portion of an optical waveguide substrate, the modulation bandwidth is widened. An optical waveguide device (1A) is provided with a substrate main body (2) composed of an electro-optical material; an optical waveguide (6); and modulating electrodes (3, 4, 5) for applying a voltage to the optical waveguide (6). The optical waveguide (6) is provided with first main sections (6e, 6f); first curved section (7A); first returning sections (6g, 6h) arranged between the first curved section (7A) and a returning point (8); second main sections (6m, 6n); a second curved section (7B); and second returning sections (6j, 6k) arranged between the second curved section (7B) and the returning point (8). At least a part of a signal electrode is arranged in a returning area covering from the first curved section (7A) and the second curved section (7B) to the returning point (8).
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公开(公告)号：EP1406114A4
公开(公告)日：2006-01-18
申请号：EP02717172
申请日：2002-04-16
申请人： NGK INSULATORS LTD
发明人： MITOMI OSAMU , ICHIGI TAKENORI , OSHIMA MASATSUGU , OKUMURA JUN , AOKI KENJI , YAMASHITA MASATAKA
CPC分类号： G02F1/3137 , G02F1/011 , G02F1/0147
摘要： An optical device, comprising a core layer (11) having a branch guided wave passage, a first clad layer (12) having the core layer stacked on a part of the surface thereof, a second clad layer (13) holding the core layer together with the first clad layer, a third clad layer (14) stacked on the second clad layer, heating electrodes (15, 16), and a substrate (17) having a heat sink function, wherein at least one of the core layer, first clad layer, and second clad layer is formed with an optical material having a positive refraction factor change coefficient, and the refraction factor of the third clad layer is made smaller than that of the second clad layer.
摘要翻译： 由核心层，与芯层接触的第一覆盖层，第二覆盖层，第三覆盖层和用于施加一定电压或提供一定电流的至少一个电极组成的光学器件。 第二覆层沉积在第三覆层上，芯层设置在第一覆层和第二覆层之间。 芯层，第一覆层，第二覆层和第三覆层由具有负折射率变化系数的材料构成，第三覆层的折射率小于第二覆层的折射率。
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