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71. 发明授权

US07233714B2 Planar optical waveguide circuit type variable attenuator 有权
标题翻译：平面光波导电路型可变衰减器
公开(公告)号：US07233714B2
公开(公告)日：2007-06-19
申请号：US11352373
申请日：2006-02-13
申请人： Hiroshi Kawashima , Kazutaka Nara
发明人： Hiroshi Kawashima , Kazutaka Nara
IPC分类号： G02B6/12 , G02F1/035 , G02F1/295
CPC分类号： G02B6/12007 , G02B6/266 , G02B6/29352 , G02B6/29395 , G02B6/29398 , G02F1/225
摘要： Provided is a planar optical waveguide circuit type variable attenuator capable of light attenuation by an arbitrary value in a range from 0 to 10 dB and also by not less than 30 dB, which is small-sized and is of power saving type. The attenuator is composed of a Mach-Zehnder interferometer circuit 30 having input waveguides 1a, 1b and an output waveguide 1d which are formed on an optical waveguide layer 3, and comprises a slit 12 formed on the waveguide layer in a longitudinally intermediate part of at least one of the optical waveguides 1a, 1b, 1d and in a direction crossing the optical waveguides 1a, 1b, 1d, and matching medium displacing means 16a, 16b for displacing index-matching medium 13 in a part of the slit 12 from a position including a path of propagation light in the optical waveguides 1a, 1b, 1d, and a position retracted from the path of propagation light.
摘要翻译：本发明提供一种平面光波导路型可变衰减器，其能够通过小型化和省电型的0〜10dB的范围内的任意值进行光衰减。衰减器由具有形成在光波导层3上的输入波导1a，1b和输出波导1d的马赫 - 曾德干涉仪电路30组成，并且包括形成在纵向中间的波导层上的狭缝12 至少一个光波导1a，1b，1d中的一部分，并且在与光波导1a，1b，1d以及与之匹配的介质移位装置16a，16b的方向上交替，用于移位折射率匹配介质 13在从包括光波导1a，1b，1d的传播光路径的位置和从传播光路径缩回的位置的狭缝12的一部分中。

72. 发明授权

US06920265B2 Arrayed waveguide grating type optical multiplexer/demultiplexer 失效
标题翻译：阵列波导光栅类型光复用器/解复用器
公开(公告)号：US06920265B2
公开(公告)日：2005-07-19
申请号：US10287510
申请日：2002-11-05
申请人： Kazuhisa Kashihara , Kazutaka Nara
发明人： Kazuhisa Kashihara , Kazutaka Nara
IPC分类号： G02B6/122 , G02B6/34 , G02B6/26
CPC分类号： G02B6/12016 , G02B6/1228
摘要： An arrayed waveguide grating optical multiplexer/demultiplexer includes an arrayed waveguide connected to at least one first optical waveguide via a first slab waveguide, a plurality of second optical waveguides connected to the arrayed waveguide via a second slab waveguide. At least one expanding width waveguide has a first end portion and a second end portion having a second width larger than a first width of the first end portion. Each first end portion is connected to each first optical waveguide. The second end portion is connected to the first slab waveguide. The first width of the first end portion is larger than a first optical waveguide width of the at least one first optical waveguide. The first width of the first end portion satisfies a single mode condition. A width of the expanding width waveguide increases from the first end portion toward the second end portion.
摘要翻译：阵列波导光栅光复用器/解复用器包括经由第一平板波导连接到至少一个第一光波导的阵列波导，经由第二平板波导连接到阵列波导的多个第二光波导。至少一个扩展宽度波导具有第一端部和具有大于第一端部的第一宽度的第二宽度的第二端部。每个第一端部连接到每个第一光波导。第二端部连接到第一平板波导。第一端部的第一宽度大于至少一个第一光波导的第一光波导宽度。第一端部的第一宽度满足单模状态。扩张宽度波导的宽度从第一端部向第二端部增加。

73. 发明授权

US06836591B2 Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit 有权
标题翻译：阵列波导光栅类型光复用器/解复用器和光波导电路
公开(公告)号：US06836591B2
公开(公告)日：2004-12-28
申请号：US09741824
申请日：2000-12-22
申请人： Kazuhisa Kashihara , Kazutaka Nara
发明人： Kazuhisa Kashihara , Kazutaka Nara
IPC分类号： G02B634
CPC分类号： G02B6/12016 , G02B2006/12195
摘要： An arrayed waveguide grating type optical multiplexer/demultiplexer in which the 1 dB band width is large, the ripple is small, and the degradation of the adjacent crosstalk can be controlled. A waveguide forming portion is formed on a substrate. The waveguide forming portion includes an optical input waveguides, a first slab waveguide, an arrayed waveguide including a plurality of channel waveguides arranged side by side and which have different lengths with the differences preset, a second slab waveguide, and a plurality of optical output waveguides arranged side by side, all of the components being connected in the order stated. A single mode straight waveguide narrower than the optical input waveguides is provided at the output end of at least one or more optical input waveguides. A multi-mode trapezoidal waveguide whose width increases toward the arrayed waveguide is provided at the output end of the straight waveguide. An upper base of the trapezoidal waveguide is longer than the diameter of the optical input waveguide.
摘要翻译： 1dB带宽大的阵列波导光栅类型的光信号多路复用器/解复用器，纹波小，可以控制相邻串扰的劣化。在基板上形成波导形成部。波导形成部分包括光输入波导，第一平板波导，包括并排布置的多个通道波导的阵列波导，并且具有预设的差异的不同长度，第二平板波导和多个光输出波导并排布置，所有组件按照所述的顺序连接。在至少一个或多个光输入波导的输出端提供比光输入波导窄的单模直线波导。在直线波导的输出端提供宽度朝阵列波导增加的多模式梯形波导。梯形波导的上基部比光输入波导的直径长。

74. 发明授权

US06768832B2 Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same 失效
标题翻译：阵列波导光栅光复用器/解复用器及其制造方法
公开(公告)号：US06768832B2
公开(公告)日：2004-07-27
申请号：US10175779
申请日：2002-06-21
申请人： Takeshi Nakajima , Kazutaka Nara , Kazuhisa Kashihara
发明人： Takeshi Nakajima , Kazutaka Nara , Kazuhisa Kashihara
IPC分类号： G02B628
CPC分类号： G02B6/12011 , G02B6/125 , G02B2006/12038
摘要： An arrayed waveguide grating optical multiplexer/demultiplexer includes an arrayed waveguide having a plurality of channel waveguides which includes a shortest channel waveguide having a shortest length. Each channel waveguide includes a curved portion provided between first and second connection portions. The shortest channel waveguide has a radius (R1) of curvature of the curved portion and an angle (&thgr;1) which is a half of a central angle of the curved portion. The radius (R1) of curvature and the angle (&thgr;1) are determined such that a product (R1×&thgr;1) is a value within a range which includes a minimum value of the product (R1×&thgr;1) and in which all of the plurality of channel waveguides are drawn.
摘要翻译：阵列波导光栅光复用器/解复用器包括具有多个通道波导的阵列波导，其包括具有最短长度的最短波导波导。每个通道波导包括设置在第一和第二连接部分之间的弯曲部分。最短通道波导具有弯曲部分的曲率的半径（R1）和作为弯曲部分的中心角的一半的角度（θ1）。确定曲率的半径（R1）和角度（θ1），使得乘积（R1xtheta1）是包括乘积（R1xtheta1）的最小值的范围内的值，并且其中所有多个通道波导为画。

75. 发明授权

US06671433B2 Arrayed waveguide grating type optical multiplexer/demultiplexer 失效
标题翻译：阵列波导光栅类型光复用器/解复用器
公开(公告)号：US06671433B2
公开(公告)日：2003-12-30
申请号：US09836354
申请日：2001-04-18
申请人： Kazuhisa Kashihara , Kazutaka Nara
发明人： Kazuhisa Kashihara , Kazutaka Nara
IPC分类号： G02B634
CPC分类号： G02B6/12016 , G02B6/1228
摘要： An arrayed waveguide grating type optical multiplexer/demultiplexer according to the present invention multiplexes or demultiplexes the lights of desired wavelength without depending on the outside environmental temperature thereby realizing a high quality optical wavelength division multiplexing communications. A waveguide forming part 10 comprising connecting in series of one or more optical input waveguides 12, a first slab waveguide 13, an arrayed waveguide 14 consisted of a plurality of channel waveguides 14a arranged side by side with a length different from each other, a second slab waveguide 15 and a plurality of optical output waveguides 16 arranged side by side is formed on a substrate 11. At the output ends of one or more optical input waveguides 12 is provided, for example, a trapezoidal type waveguide 5. The trapezoidal type waveguide 5 is formed by providing a width larger than that of the optical input waveguide or the optical output waveguide to be connected and enlarging its width increasingly toward the corresponding slab waveguide. The optical multiplex/demultiplex function of the arrayed waveguide grating type optical multiplexer/demultiplexer is designed by a optical frequency spacing of 100 GHz and a light which has undergone wavelength division multiplexing having, for example, an optical frequency spacing of 200 GHz is outputted to be demultiplexed.
摘要翻译：根据本发明的阵列波导光栅类型的光信号多路复用器/解复用器多路复用或解复用所需波长的光，而不依赖于外部环境温度，从而实现高质量的光波分复用通信。波导形成部分10，其包括串联一个或多个光输入波导12，第一平板波导13，阵列波导14，其由多个彼此并排布置的长度不同的多个通道波导14a组成，第二平板波导15和并排布置的多个光输出波导16形成在基板11上。在一个或多个光输入波导12的输出端设置有例如梯形波导5。梯形波导通过提供比要连接的光输入波导或光输出波导的宽度大的宽度形成5，并且将其宽度逐渐扩大到相应的平板波导。阵列波导光栅型光信号多路复用器/解复用器的光复用/解复用功能是通过100GHz的光频间隔进行设计的，已经经过例如200GHz的光频间隔的波分复用的光被输出到解复用。

76. 发明授权

US06631235B1 Planar lightwave circuit platform and method for manufacturing the same 失效
标题翻译：平面光波电路平台及其制造方法
公开(公告)号：US06631235B1
公开(公告)日：2003-10-07
申请号：US09595058
申请日：2000-06-16
申请人： Hiroshi Kawashima , Kazutaka Nara , Shiro Nakamura , Kazunori Watanabe
发明人： Hiroshi Kawashima , Kazutaka Nara , Shiro Nakamura , Kazunori Watanabe
IPC分类号： G02B610
CPC分类号： G02B6/132 , G02B2006/12038 , G02B2006/12097
摘要： The present invention provides a planar lightwave circuit platform and its method for manufacturing by which the characteristics of the planar lightwave circuit become stable. In a planar lightwave circuit platform comprising quartz-based lower cladding layer (2), height adjusting layer (3), core layer (4), and upper cladding layer (5) formed in order on substrate (1), wherein the glass softening temperature of the height adjusting layer (3) is set to be higher than the glass softening temperatures and the temperatures for transparent-vitrification of the core layer (4) and upper cladding layer (5).
摘要翻译：本发明提供一种平面光波电路平台及其制造方法，通过该方法，平面光波电路的特性变得稳定。在包括基板（1）上依次形成的石英基下包层（2），高度调节层（3），芯层（4）和上包覆层（5）的平面光波电路平台中，其中玻璃软化将高度调节层（3）的温度设定为高于玻璃软化温度和芯层（4）和上敷层（5）的透明玻璃化温度。

77. 发明授权

US06591044B2 Optical waveguide circuit module 失效
标题翻译：光波导电路模块
公开(公告)号：US06591044B2
公开(公告)日：2003-07-08
申请号：US09961371
申请日：2001-09-25
申请人： Kazuhisa Kashihara , Kazutaka Nara , Tunetoshi Saito , Takeshi Nakajima
发明人： Kazuhisa Kashihara , Kazutaka Nara , Tunetoshi Saito , Takeshi Nakajima
IPC分类号： G02B610
CPC分类号： G02B6/12014 , G02B6/12023 , G02B6/1203 , G02B6/126
摘要： An optical waveguide circuit module of the invention is a highly reliable optical waveguide circuit module where cracks are not generated in an optical waveguide circuit chip housed even under a high temperature and high humidity environment. An optical waveguide circuit chip (25) comprises a waveguide forming region (10) formed on a substrate (1). The waveguide forming region (10) has a waveguide configuration sequentially connecting optical input waveguides (2), a first slab waveguide (3), an arrayed waveguide (4) made of a plurality of channel waveguides (4a) arranged side by side, the channel waveguides having a different length each other, a second slab waveguide (5), and a plurality of optical output waveguides (6) arranged side by side.
摘要翻译：本发明的光波导电路模块是即使在高温高湿环境下也容纳的光波导电路芯片中也不产生裂纹的高可靠性的光波导路模块。光波导电路芯片（25）包括形成在基板（1）上的波导形成区域（10）。波导形成区域（10）具有顺序地连接光输入波导（2），第一平板波导（3），由并排布置的多个通道波导（4a）构成的阵列波导（4）的波导结构，具有彼此不同长度的通道波导，第二平板波导（5）和并排布置的多个光学输出波导（6）。

78. 发明授权

US06563986B2 Arrayed waveguide grating 失效
公开(公告)号：US06563986B2
公开(公告)日：2003-05-13
申请号：US09817067
申请日：2001-03-27
申请人： Kazuhisa Kashihara , Kazutaka Nara
发明人： Kazuhisa Kashihara , Kazutaka Nara
IPC分类号： G02B634
CPC分类号： G02B6/12014 , G02B6/1203
摘要： The present invention provides an arrayed waveguide grating in which the center wavelength of light transmission does not depend on the environmental temperature thereof, wherein a waveguide-formed area (10) is formed on a substrate (1), in which an optical input waveguides (2), a first slab waveguide (3), an arrayed waveguide (4) including a plurality of channel waveguides (4a) arranged side by side, each having a different length by a predetermined figure, a second slab waveguide (5), and a plurality of optical output waveguides (6) arranged side by side in that order, and the focal length of the first and seconds lab waveguides (3 and 5) are made different from each other. A continuous separation plane (80) is formed, which intersects with both the light channel of the first slab waveguide (3) and the light channel of the second slab waveguide (5), and by the separation plane (80), the above-described waveguide-formed area (10) is divided into the first waveguide-formed area (10c) including the optical input waveguides (2) and the optical output waveguides (6) and the second waveguide-formed area (10d) including the arrayed waveguide (4). For example, the second waveguide-formed area (10d) is caused to slide and move along the separation plane (80) by the slide movement member (17).

79. 发明授权

US06504983B1 Optical waveguide and method for fabricating the same 失效
标题翻译：光波导及其制造方法
公开(公告)号：US06504983B1
公开(公告)日：2003-01-07
申请号：US09820800
申请日：2001-03-30
申请人： Kazutaka Nara , Kazuhisa Kashihara
发明人： Kazutaka Nara , Kazuhisa Kashihara
IPC分类号： G02B610
CPC分类号： G02B6/12009 , C03B19/1484 , C23C16/4584 , G02B6/132 , G02B2006/12038 , G02B2006/121 , Y02P40/57
摘要： The crosstalk characteristics of an arrayed waveguide grating or the like are improved. One or more of substrates are placed at a circumferential position centering the table rotational center C on a turntable that rotates at a constant angular speed of rotation &ohgr; and the turntable is rotated. A burner is moved to and fro in the radial direction of the turntable between positions r1 and r2 in the radial direction of the turntable and is reciprocated across the substrates. A material gas of glass, an oxygen gas and a hydrogen gas are passed through the burner to generate a hydrolysis reaction of the material gas in a hydrogen oxygen flame and an under cladding glass particle, a core glass particle and an over cladding particle are sequentially deposited on the substrates to form an optical waveguide part. The rotation velocity r1&ohgr; of the turntable at the position r1 is set 600 mm/sec or above at least in the step of depositing the core glass particle among the steps of depositing the under cladding glass particle, the core glass particle and the over cladding particle.
摘要翻译：阵列波导光栅等的串扰特性得到改善。将一个或多个基板放置在以工作台旋转中心C为中心的圆周位置，该旋转台以恒定的旋转角度ω旋转，并且转台旋转。燃烧器沿着转盘的径向在位置r1和r2之间沿着转盘的径向方向来回移动，并且在基板之间往复运动。玻璃，氧气和氢气的原料气体通过燃烧器，产生氢气氧焰和下包层玻璃颗粒中的原料气体的水解反应，芯玻璃颗粒和上包层颗粒依次沉积在基板上以形成光波导部分。至少在沉积下包层玻璃颗粒，芯玻璃颗粒和上包层颗粒的步骤中沉积芯玻璃颗粒的步骤中，将位置r1处的转盘的旋转速度r1omega设定为600mm / sec以上。

80. 发明授权

US06442314B1 Arrayed waveguide grating 有权
公开(公告)号：US06442314B1
公开(公告)日：2002-08-27
申请号：US09828827
申请日：2001-04-10
申请人： Kazutaka Nara , Kazuhisa Kashihara
发明人： Kazutaka Nara , Kazuhisa Kashihara
IPC分类号： G02B634
摘要： An arrayed waveguide grating with a first slab waveguide connected to optical input waveguides and to arrayed waveguides for propagating light transmitted from the first slab waveguide. A second slab waveguide is connected to an output end of the arrayed waveguides and to optical output waveguides. The fluctuation in the refractive index of a core in its propagation direction over entire lengths of the arrayed waveguides is restrained. The standard deviation of a phase error distribution generated over the entire lengths of the arrayed waveguides in the propagation direction is restrained to 0.6 rad or less.

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