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61. 发明授权

US08068736B2 Tunable dispersion compensator 失效
标题翻译：可调谐色散补偿器
公开(公告)号：US08068736B2
公开(公告)日：2011-11-29
申请号：US12042823
申请日：2008-03-05
申请人： Hiroshi Kawashima , Kazutaka Nara
发明人： Hiroshi Kawashima , Kazutaka Nara
IPC分类号： H04J14/02
CPC分类号： G02B6/12007 , G02B6/2713 , G02B6/2766 , G02B6/2934 , G02B6/29355 , G02B6/29394 , G02B6/29395 , G02B2006/12159 , H04B10/25133
摘要： The tunable dispersion compensator 10 of the present invention comprises: the Mach-Zehnder interferometers (MZIs) 21 to 25 cascaded on a planar lightwave circuit; and the tunable couplers 31 to 34 connected to between each corresponding pair of the MZIs respectively. The Y-branch waveguide 15 and 16 are used for connecting to between the MZIs 21, 25 as both end sides and the input/output optical waveguides 13, 14 respectively. The waveguide loop mirror 40 is connected to the final stage MZI 25 among the MZIs 21 to 25 which an incident light is propagated last therethrough. The half-wave plate 50 is inserted to the loop waveguide 41 of the waveguide loop mirror 40. And it becomes able to enhance (double) the amount of tunable dispersion because an input light signal is passed twice through the similar path by the waveguide loop mirror 40.
摘要翻译：本发明的可调色散补偿器10包括：在平面光波电路上级联的马赫 - 曾德干涉仪（MZI）21至25; 以及可调谐耦合器31至34分别连接在每个对应的一对MZI之间。 Y分支波导15和16分别用作两端和输入/输出光波导13,14之间的MZI 21,25之间的连接。波导环路镜40连接到最后通过其中传播入射光的MZI 21至25中的最后级MZI 25。半波片50被插入到波导环形反射镜40的环形波导41中。由于输入光信号通过波导管路两次通过相似的路径，所以能够增强（双倍）可调谐色散的量镜子40。

62. 发明授权

US07146079B2 Dynamic gain equalizer 失效
标题翻译：动态增益均衡器
公开(公告)号：US07146079B2
公开(公告)日：2006-12-05
申请号：US11113223
申请日：2005-04-25
申请人： Kazutaka Nara , Kazuhisa Kashihara , Noritaka Matsubara
发明人： Kazutaka Nara , Kazuhisa Kashihara , Noritaka Matsubara
IPC分类号： G02B6/26
CPC分类号： H01S3/10007
摘要： The dynamic gain equalizer for flattening a gain profile of an optical amplifier includes: an optical waveguide circuit having multistage optical couplers, demultiplexing and multiplexing, each formed by connecting optical couplers arranged at a plurality of stages; and optical connecting circuits including optical phase shifters each capable of changing a phase of propagating light and optical delay lines each for adding a predetermined delay time to the propagating light, said dynamic gain equalizer in which at least one of the optical couplers in the two multistage optical couplers are provided with variable optical amplitude means, respectively, and each of the multistage optical couplers are formed asymmetrically with respect to an extension of a line which connects a center arranged position of optical outputting ends of the demultiplexing multistage optical coupler with a center arranged position of optical inputting ends of the multiplexing multistage optical coupler.
摘要翻译：用于平坦化光放大器的增益分布的动态增益均衡器包括：具有多级光耦合器的光波导电路，解复用和多路复用，每个通过连接以多个级布置的光耦合器形成; 以及光学连接电路，包括光学移相器，每个光学移相器能够改变传播光的相位和每个用于向传播光增加预定延迟时间的光学延迟线，所述动态增益均衡器中，两个多级中的至少一个光耦合器光耦合器分别设置有可变光学幅度装置，并且每个多级光耦合器相对于将多路分用多级光耦合器的光输出端的中心布置位置连接到一条线的延伸线不对称地形成，中心布置复用多级光耦合器的光输入端的位置。

63. 发明授权

US06829418B2 Optical waveguide circuit device 失效
标题翻译：光波导电路器件
公开(公告)号：US06829418B2
公开(公告)日：2004-12-07
申请号：US09955120
申请日：2001-09-19
申请人： Kazuhisa Kashihara , Yoshinobu Nekado , Kazutaka Nara , Tunetoshi Saito
发明人： Kazuhisa Kashihara , Yoshinobu Nekado , Kazutaka Nara , Tunetoshi Saito
IPC分类号： G02B626
CPC分类号： G02B6/12011 , G02B6/12014 , G02B6/1203
摘要： An optical waveguide circuit device strong in impact strength in dropping, etc. is provided. A waveguide pattern is formed on a silicon substrate in this optical waveguide circuit device. For example, this waveguide pattern has an optical input waveguide, a first slab waveguide, an arrayed waveguide including a plurality of channel waveguides having lengths different from each other and arranged side by side, a second slab waveguide, and a plurality of optical output waveguides arranged side by side. The first slab waveguide is separated on a cross separating face crossing an optical path passing the first slab waveguide. A temperature dependence in light transmission central wavelength of an arrayed waveguide grating is reduced by sliding and moving a separating slab waveguide side by a slide moving member along the separating face depending on temperature. The cross separating face and a noncross separating face communicated with this cross separating face are set to faces not conformed to a cleavage plane of the substrate.
摘要翻译：提供了一种在下降时具有强冲击强度的光波导电路装置。在该光波导路电路装置中，在硅基板上形成波导图案。例如，该波导图案具有光输入波导，第一平板波导，包括具有彼此长度不同并且并排布置的多个通道波导的阵列波导，第二平板波导和多个光输出波导并排排列第一平板波导在交叉穿过第一平板波导的光路的交叉分离面上分离。阵列波导光栅的透光中心波长的温度依赖性通过滑动移动部件沿着分离面滑动并移动，根据温度而减小。交叉分离面和与该交叉分离面连通的非交叉分离面被设定为不符合基板的解理面。

64. 发明授权

US06763164B2 Method for manufacturing a planar lightwave circuit, and planar waveguide circuit 失效
标题翻译：平面光波电路的制造方法以及平面波导电路
公开(公告)号：US06763164B2
公开(公告)日：2004-07-13
申请号：US09803964
申请日：2001-03-13
申请人： Kazuhisa Kashihara , Kazutaka Nara , Yoshinobu Nekado
发明人： Kazuhisa Kashihara , Kazutaka Nara , Yoshinobu Nekado
IPC分类号： G02B642
CPC分类号： G02B6/12014 , G02B5/1857 , G02B6/1203 , G02B6/136 , Y10T29/49
摘要： The invention provides a simple metallic film manufacturing method for manufacturing an arrayed waveguide grating able to set each light transmitting central wavelength to a set wavelength at optionally predetermined temperature (for example 25° C.). The arrayed waveguide grating is manufactured by using this method. The light transmitting central wavelength of a circuit forming a waveguide forming area on a substrate is measured, and a shift of the light transmitting central wavelength from the set wavelength is corrected by annealing process. A mask has a hole approximately formed in the same shape as the manufactured metallic film, and is arranged such that the hole of the mask corresponds to a manufacturing portion of the metallic film. The metallic film is manufactured by evaporation, etc. A intersecting planes is formed by primary cutting, and a position shifting member is fixed through the metallic film and solder, and a non-intersecting planes is formed by secondary cutting so that the waveguide forming area is cut and separated.
摘要翻译：本发明提供一种用于制造阵列波导光栅的简单的金属膜制造方法，其能够将每个光透射中心波长设定在可选的预定温度（例如25℃）下的设定波长。使用该方法制造阵列波导光栅。测量在基板上形成波导形成区域的电路的发光中心波长，并且通过退火处理来校正透射中心波长从设定波长的偏移。掩模具有大致形成为与所制造的金属膜相同形状的孔，并且被布置成使得掩模的孔对应于金属膜的制造部分。通过蒸发等制造金属膜。通过一次切割形成交叉平面，通过金属膜和焊料固定位置移动部件，通过二次切割形成不相交平面，使得波导形成区域被切割和分离。

65. 发明授权

US06728435B2 Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit 失效
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：US06728435B2
公开(公告)日：2004-04-27
申请号：US10067943
申请日：2002-02-08
申请人： Kazuhisa Kashihara , Kazutaka Nara
发明人： Kazuhisa Kashihara , Kazutaka Nara
IPC分类号： G02B628
CPC分类号： G02B6/12016 , G02B2006/12195
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 multi-mode 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. The first end portion of each of the at least one multi-mode waveguide is connected to each of the at least one first optical waveguide. The second end portion of each of the at least one multi-mode waveguide is connected to the first slab waveguide. A width of the at least one multi-mode waveguide increases from the first end portion toward the second end portion and is configured to realize multi-mode.
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。至少一个多模式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。所述至少一个多模波导中的每一个的第一端部连接到所述至少一个第一光波导中的每一个。所述至少一个多模波导中的每一个的第二端部连接到所述第一平板波导。至少一个多模式波导的宽度从第一端部朝向第二端部增加，并且被配置为实现多模式。

66. 发明授权

US06501882B2 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：US06501882B2
公开(公告)日：2002-12-31
申请号：US10026722
申请日：2001-12-27
申请人： Kazuhisa Kashihara , Kazutaka Nara
发明人： Kazuhisa Kashihara , Kazutaka Nara
IPC分类号： G02B634
CPC分类号： G02B6/12016 , 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。

67. 发明授权

US06490395B1 Arrayed waveguide grating and method for compensating optical transmitting center wavelength of light traveling through the same 有权
标题翻译：阵列波导光栅和用于补偿光传播中心波长的光的传播方法
公开(公告)号：US06490395B1
公开(公告)日：2002-12-03
申请号：US09667563
申请日：2000-09-22
申请人： Kazutaka Nara , Takeshi Nakajima , Tsunetoshi Saito , Kazuhisa Kashihara
发明人： Kazutaka Nara , Takeshi Nakajima , Tsunetoshi Saito , Kazuhisa Kashihara
IPC分类号： G02B626
CPC分类号： G02B6/12014 , G02B6/1203
摘要： An arrayed waveguide grating including at least one first optical waveguide, a first slab waveguide, a plurality of arrayed waveguides, a second slab waveguide, and a plurality of second optical waveguides. The plurality of arrayed waveguides are connected to the at least one first optical waveguide via the first slab waveguide. Each of the plurality of arrayed waveguides has a different length. The plurality of second optical waveguides are connected to the plurality of arrayed waveguides via the second slab waveguide. At least one of the first and second slab waveguides is partitioned to first and second segments at a partition surface intersecting a path of light which travels through the arrayed waveguide grating. At least one of the first and second segments is configured to be slid along the partition surface to compensate an optical transmitting center wavelength of the light according to a temperature of the arrayed waveguide grating.
摘要翻译：阵列波导光栅，包括至少一个第一光波导，第一平板波导，多个阵列波导，第二平板波导和多个第二光波导。多个阵列波导通过第一平板波导连接到至少一个第一光波导。多个阵列波导中的每一个具有不同的长度。多个第二光波导通过第二平板波导连接到多个阵列波导。第一和第二平板波导中的至少一个在与穿过阵列波导光栅的光的路径相交的分隔表面处分隔成第一和第二段。第一和第二段中的至少一个被配置为沿着分隔表面滑动，以根据阵列波导光栅的温度补偿光的透光中心波长。

68. 发明申请

US20120251046A1 OPTICAL WAVEGUIDE CIRCUIT 审中-公开
标题翻译：光波导电路
公开(公告)号：US20120251046A1
公开(公告)日：2012-10-04
申请号：US13445360
申请日：2012-04-12
申请人： Hiroshi Kawashima , Kazutaka Nara
发明人： Hiroshi Kawashima , Kazutaka Nara
IPC分类号： G02B6/34 , G02B6/26 , G02B6/10 , G02B6/00
CPC分类号： G02B6/1221
摘要： The present invention provides an optical waveguide circuit which includes: a waveguide made of a material whose temperature coefficient of refractive index has a second-order component; a groove formed in a part of the waveguide; and a compensation material having a temperature coefficient of refractive index different from the temperature coefficient of refractive index of the waveguide, and in which a normal line of an interface between the groove and the waveguide, and an optical axis of light propagating through the waveguide intersect at a predetermined intersection angle, and the predetermined intersection angle is determined so as to reduce a second-order component of optical path length change of the waveguide due to the second-order component of temperature coefficient of the refractive index of the waveguide.
摘要翻译：本发明提供一种光波导电路，其包括：由折射率的温度系数具有二次分量的材料构成的波导; 形成在所述波导的一部分中的槽; 以及折射率的温度系数与波导的折射率的温度系数不同的补偿材料，并且其中槽和波导之间的界面的法线和通过波导传播的光的光轴相交以预定的交叉角度，并且确定预定的交叉角度，以便由于波导的折射率的温度系数的二阶分量而减小波导的光程长度变化的二次分量。

69. 发明申请

US20120207474A1 PLC-TYPE DEMODULATOR AND OPTICAL TRANSMISSION SYSTEM 有权
标题翻译： PLC型DEMODULATOR和光传输系统
公开(公告)号：US20120207474A1
公开(公告)日：2012-08-16
申请号：US13409343
申请日：2012-03-01
申请人： Takashi INOUE , Kazutaka Nara
发明人： Takashi INOUE , Kazutaka Nara
IPC分类号： H04J14/06 , G02F2/00
CPC分类号： H04B10/60 , H04B10/613 , H04B10/614
摘要： The invention provides a PLC-type DP-QPSK demodulator that reduces connection loss between a polarization beam splitter and a 90-degree hybrid circuit and aims at reducing the manufacturing cost and an optical transmission system using the same. In an embodiment of the invention, a PLC-type DP-QPSK demodulator that receives a DP-QPSK signal includes one PLC chip having a planar lightwave circuit. Input ports and output ports of signal light are provided at an input end and at an output end of the PLC chip, respectively. Within the planar lightwave circuit, there are integrated a polarization beam splitter that splits the DP-QPSK signal into an X-polarization QPSK signal and a Y-polarization QPSK signal, and two 90-degree hybrid circuits that mix the X-polarization QPSK signal and local oscillation light and the Y-polarization QPSK signal and local oscillation light, respectively, split each QPSK signal into orthogonal components I, Q and output them.
摘要翻译：本发明提供一种PLC型DP-QPSK解调器，其减少偏振分束器和90度混合电路之间的连接损耗，并旨在降低制造成本，并且使用该DP-QPSK解调器的光传输系统。在本发明的实施例中，接收DP-QPSK信号的PLC型DP-QPSK解调器包括具有平面光波回路的一个PLC芯片。信号灯的输入端口和输出端口分别设置在PLC芯片的输入端和输出端。在平面光波电路内，集成有偏振分束器，其将DP-QPSK信号分解成X偏振QPSK信号和Y偏振QPSK信号，以及混合X偏振QPSK信号的两个90度混合电路并且本地振荡光和Y偏振QPSK信号和本地振荡光分别将每个QPSK信号分成正交分量I，Q并输出。

70. 发明申请

US20080253716A1 ARRAYED WAVEGUIDE GRATING OPTICAL MULTIPLEXER/DEMULTIPLEXER 失效
标题翻译：阵列波导光学多路复用器/解复用器
公开(公告)号：US20080253716A1
公开(公告)日：2008-10-16
申请号：US12056892
申请日：2008-03-27
申请人： Kazutaka Nara
发明人： Kazutaka Nara
IPC分类号： G02B6/34 , G02B6/28
CPC分类号： G02B6/12009
摘要： An arrayed waveguide grating optical multiplexer/demultiplexer 1 comprises an arrayed waveguide grating 20 formed on a substrate 10. The arrayed waveguide grating 20 comprises two slab waveguides 21, 22, one arrayed waveguide 23, first input/output waveguides A, B respectively connected to each end facet 21a, 22a of slab waveguides 21, 22, and second input/output waveguide-groups C, D respectively connected to the end facets 21a, 22a. The first input/output waveguides A, B are provided for inputting or outputting a plurality of lights (λ1˜λn) each of which has a different wavelength and multiplexed. The second input/output waveguides C, D are provided for individually inputting or outputting a plurality of lights (λ1˜λn). One arrayed waveguide 23 can be used to carry out simultaneously multiplexing and demultiplexing. It is able to carry out simultaneously multiplexing and demultiplexing with one arrayed waveguide grating 20.
摘要翻译：阵列波导光栅光复用器/解复用器1包括形成在衬底10上的阵列波导光栅20。阵列波导光栅20包括两个平板波导21,22，一个阵列波导23，分别连接到平板波导21,22的每个端面21a，22b的第一输入/输出波导A，B和第二输入/输出波导 - 组C，D分别连接到端面21a，22b。第一输入/输出波导A，B被提供用于输入或输出每个具有不同波长并多路复用的多个光（λ1〜lambdan）。第二输入/输出波导C，D被设置用于单独输入或输出多个灯（λ1〜lambdan）。一个阵列波导23可以用于同时进行多路复用和解复用。它能够与一个阵列波导光栅20同时进行复用和解复用。

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