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61. 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。

62. 发明授权

US08503843B2 Hybrid integrated optical module 失效
标题翻译：混合集成光模块
公开(公告)号：US08503843B2
公开(公告)日：2013-08-06
申请号：US12942481
申请日：2010-11-09
申请人： Takeshi Akutsu , Junichi Hasegawa , Kazutaka Nara
发明人： Takeshi Akutsu , Junichi Hasegawa , Kazutaka Nara
IPC分类号： G02B6/26 , G02B6/12
CPC分类号： G02B6/4225 , Y10T29/49016
摘要： The present invention provides a hybrid integrated optical module having a high coupling efficiency by suppressing a connection loss between waveguides. A hybrid integrated optical module according to an embodiment of the present invention is an optical module which integrates a semiconductor chip and a PLC chip. The semiconductor chip has a semiconductor waveguide and is mounted on a Si bench. The PLC chip includes a PLC substrate and an optical waveguide formed on the PLC substrate. An end face of the semiconductor chip protrudes from an end face of the Si bench toward the PLC chip side by a protrusion amount X. Gap adjustment (adjustment of a distance D) between the semiconductor waveguide and the optical waveguide becomes possible by setting a position where the end face of the semiconductor chip is brought into contact with an end face of the PLC chip to be a reference position (zero point).
摘要翻译：本发明通过抑制波导之间的连接损耗来提供具有高耦合效率的混合集成光模块。根据本发明的实施例的混合集成光学模块是集成了半导体芯片和PLC芯片的光学模块。半导体芯片具有半导体波导并且安装在Si台架上。 PLC芯片包括形成在PLC基板上的PLC基板和光波导。半导体芯片的端面从Si台架的端面朝向PLC芯片侧突出突出量X.通过设置半导体波导和光波导之间的间隙调整（距离D的调整）可以进行位置其中半导体芯片的端面与PLC芯片的端面接触成为基准位置（零点）。

63. 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。

64. 发明申请

US20120195553A1 ARRAYED WAVEGUIDE GRATING TYPE OPTICAL MULTIPLEXER AND DEMULTIPLEXER 审中-公开
标题翻译：阵列波导型光学多路复用器和解复用器
公开(公告)号：US20120195553A1
公开(公告)日：2012-08-02
申请号：US13364675
申请日：2012-02-02
申请人： Junichi HASEGAWA , Kazutaka Nara
发明人： Junichi HASEGAWA , Kazutaka Nara
IPC分类号： G02B6/34
CPC分类号： G02B6/12014
摘要： An arrayed waveguide grating type optical multiplexer and demultiplexer which reduces a package size although plural arrayed waveguide gratings are included, is provided, comprising plural arrayed waveguide gratings which are provided in parallel to one another on a substrate and each of which has a first waveguide, a first slab waveguide, an arrayed waveguide, a second slab waveguide, and a second waveguide, and also includes a waveguide chip divided into a first and second separated waveguide chip in the first or second slab waveguide in each of the arrayed waveguide gratings and a compensation member compensating a temperature dependent shift of a light transmission center wavelength in the arrayed waveguide grating by relatively moving the first and second waveguide chip when expanded or contracted according to a temperature change. The waveguide chip has a shape bending along a bending direction of the arrayed waveguide.
摘要翻译：提供了包括多个阵列波导光栅的减小封装尺寸的阵列波导光栅类型的光信号多路复用器和解复用器，包括多个阵列波导光栅，它们在基片上彼此平行地设置，并且每一个具有第一波导，第一平板波导，阵列波导，第二平板波导和第二波导，并且还包括在每个阵列波导光栅中的第一或第二平板波导中分为第一和第二分离波导芯片的波导芯片，以及补偿部件通过根据温度变化而扩展或收缩时相对移动第一和第二波导芯片来补偿阵列波导光栅中的透光中心波长的温度相关偏移。波导芯片具有沿着阵列波导的弯曲方向弯曲的形状。

65. 发明申请

US20100278483A1 ATHERMAL AWG MODULE 失效
标题翻译： ATHERMAL AWG模块
公开(公告)号：US20100278483A1
公开(公告)日：2010-11-04
申请号：US12646237
申请日：2009-12-23
申请人： Junichi HASEGAWA , Kazutaka Nara
发明人： Junichi HASEGAWA , Kazutaka Nara
IPC分类号： G02B6/34
CPC分类号： G02B6/1203 , G02B6/4212
摘要： An athermal AWG module 10 comprises: an AWG 11 having waveguides partially divided to separate a chip, separated chips being connected by a compensation plate 33 to achieve temperature-independence; an athermal AWG chip 12 having a substrate and the AWG 11 formed on the substrate; a package 13 having an opening 14 and accommodating the athermal AWG chip 12; and a cover for blocking the opening 14. The athermal AWG chip 12 is fully covered with a gelled refractive index matching agent 16 that is matched in refractive index to the waveguides of the AWG 11. As the gelled refractive index matching agent 16 is excellent in water resistance and hardly passes water, the adhesive agent for fixing the compensation plate 33 to the surfaces of the separated two chips is prevented from being deteriorated due to ingress of water, thereby enhancing the reliability.
摘要翻译：无热AWG模块10包括：具有部分分割以分离芯片的波导的AWG 11，分离的芯片通过补偿板33连接以实现温度独立性; 具有衬底和形成在衬底上的AWG 11的无热AWG芯片12; 具有开口14并容纳无热AWG芯片12的封装13; 以及用于阻挡开口14的盖。无热AWG芯片12完全被折射率匹配的凝胶折射率匹配剂16覆盖到AWG 11的波导上。由于凝胶化折射率匹配剂16优异防水性难以通过水，因此防止了将补偿板33固定在分离的两片的表面上的粘合剂由于水的侵入而劣化，从而提高了可靠性。

66. 发明授权

US07813032B2 Methods to control phase shifts of delay demodulation devices 失效
标题翻译：控制延迟解调装置相移的方法
公开(公告)号：US07813032B2
公开(公告)日：2010-10-12
申请号：US12412847
申请日：2009-03-27
申请人： Junichi Hasegawa , Kazutaka Nara
发明人： Junichi Hasegawa , Kazutaka Nara
IPC分类号： G02F2/00
CPC分类号： G02F1/21 , G02F1/0136 , G02F1/0147 , G02F2001/212 , G02F2203/20 , H04B10/677 , H04L27/223
摘要： The present invention provides methods to control phase shift of delay demodulation devices to reduce Polarization Dependent wavelength (PDλ) to be less than, for example, 0.5 GHz (i.e. 0.004 nm). The method to control phase shift in a Planar Lightwave Circuit (PLC) for demodulating Differential Quadrature Phase Shift Keying (DQPSK) comprising two Mach-Zehnder interferometers, each having two arm waveguides and heaters placed on the two arm waveguides, the method comprising the steps of: (first step) supplying electricity to at least one predetermined heater on the two arm waveguides of each Mach-Zehnder interferometer such that Polarization Dependent wavelength (PDλ) is reduced as electricity is supplied to the predetermined heaters; (second step) inserting a half-wave plate in the two arm waveguides of each Mach-Zehnder interferometer after PDλ is reduced in the first step; (third step) supplying electricity to the predetermined heater on the at least one of the two Mach-Zehnder interferometers used in the first step to control phases of the DQPSK signals after the half-wave plates are inserted.
摘要翻译：本发明提供了控制延迟解调装置的相移以减少偏振相关波长（PDλ）小于例如0.5GHz（即0.004nm）的方法。用于解调平面光波电路（PLC）中用于解调差分正交相移键控（DQPSK）的方法，该差分正交相移键控（DQPSK）包括两个Mach-Zehnder干涉仪，每个具有两个臂波导和放置在两个臂波导上的加热器，该方法包括步骤（第一步骤）向每个马赫 - 策德尔干涉仪的两个臂波导上的至少一个预定加热器供电，从而当向预定加热器供电时，偏振相关波长（PDλ）减小; （第二步骤）在第一步骤中减少PDλ之后，在每个马赫 - 策德尔干涉仪的两个臂波导中插入半波片; （第三步骤）向在第一步骤中使用的两个马赫策德尔干涉仪中的至少一个上的预定加热器供电，以在半波片插入之后控制DQPSK信号的相位。

67. 发明申请

US20100073760A1 DELAY-LINE DEMODULATOR 失效
标题翻译：延迟线解调器
公开(公告)号：US20100073760A1
公开(公告)日：2010-03-25
申请号：US12629846
申请日：2009-12-02
申请人： Junichi Hasegawa , Kazutaka Nara
发明人： Junichi Hasegawa , Kazutaka Nara
IPC分类号： G02F2/00
CPC分类号： G02F2/00 , H04B10/505 , H04B10/677
摘要： A delay-line demodulator for demodulating a differential quadrature phase shift keying (DQPSK) signal is provided. The demodulator includes two Mach-Zehnder interferometers individually comprising two waveguides having different lengths therebetween and through which a light signal branched from the DQPSK signal propagates, respectively. A phase of the light signal propagating at one of the waveguides is delayed as compared to a phase of the light signal propagating at another one of the waveguides, wherein a divergence amount of polarization is adjusted by driving sets of heaters that are facing each other and sandwiching a half wavelength plate therebetween.
摘要翻译：提供了用于解调差分正交相移键控（DQPSK）信号的延迟线解调器。解调器包括两个马赫 - 曾德干涉仪，它们分别包括两个不同长度的波导，分别从DQPSK信号分支的光信号通过该波导传播。与在另一个波导上传播的光信号的相位相比，在波导中的一个传播的光信号的相位被延迟，其中通过驱动彼此面对的加热器组来调节偏振的发散量，在其间夹着半波片。

68. 发明申请

US20100046064A1 DELAY DEMODULATION DEVICES 失效
标题翻译：延迟解调设备
公开(公告)号：US20100046064A1
公开(公告)日：2010-02-25
申请号：US12415407
申请日：2009-03-31
申请人： Junichi Hasegawa , Kazutaka Nara
发明人： Junichi Hasegawa , Kazutaka Nara
IPC分类号： G02F2/00
CPC分类号： G02B6/12007 , G02B6/125 , H04B10/677
摘要： A delay demodulation device, which reduces chip size and polarization dependent frequency (PDf), is provided. The delay demodulation device comprises: an input waveguide, which receives DQPSK signals; a Y-shape waveguide, which splits the input waveguide; a first Mach-Zehnder interferometer; and a second Mach-Zehnder interferometer. Both end of two arm waveguides of first Mach-Zehnder interferometer and both ends of two arm waveguides of second Mach-Zehnder interferometer are angled toward the center portion of a Planar Lightwave Circuit (PLC). Because of the angle, the length of the two arm waveguides of the first Mach-Zehnder interferometer and the length of the two arm waveguides of the second Mach-Zehnder interferometer in Z-direction can be shortened, and input couplers and output couplers of the Mach-Zehnder interferometers in Z-direction can be shortened as well. The area occupied by the Mach-Zehnder interferometers is also reduced.
摘要翻译：提供了一种降低芯片尺寸和偏振相关频率（PDf）的延迟解调装置。延迟解调装置包括：输入波导，其接收DQPSK信号; Y形波导，其分离输入波导; 第一台马赫 - 策德尔干涉仪; 和第二台Mach-Zehnder干涉仪。第一马赫 - 策德尔干涉仪的两个臂波导的两端和第二马赫 - 策德尔干涉仪的两个臂波导的两端都朝向平面光波回路（PLC）的中心部分倾斜。由于角度，可以缩短第一马赫 - 策德尔干涉仪的两个臂波导的长度和Z方向上的第二马赫 - 策德尔干涉仪的两个臂波导的长度，并且输入耦合器和输出耦合器 Z方向的马赫 - 曾德干涉仪也可以缩短。 Mach-Zehnder干涉仪所占据的面积也减少了。

69. 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。

70. 发明申请

US20080199130A1 ARRAYED WAVEGUIDE GRATING 失效
标题翻译：阵列波形光栅
公开(公告)号：US20080199130A1
公开(公告)日：2008-08-21
申请号：US12041231
申请日：2008-03-03
申请人： Junichi Hasegawa , Kazutaka Nara
发明人： Junichi Hasegawa , Kazutaka Nara
IPC分类号： G02B6/26
CPC分类号： G02B6/1203 , G02B6/12014
摘要： The present invention enables reduction of the temperature dependence of the light transmission center wavelength of the arrayed waveguide grating.Provided is an arrayed waveguide grating having optical input waveguides 2, a first slab waveguide 3, an arrayed waveguide comprising plural waveguides of mutually-different lengths, a second slab waveguide 5 and plural optical output waveguides 6. The first slab waveguide 3 is divided along division surfaces 8 crossing the light path into divided slab waveguides 3a and 3b. The divided slab waveguide 3a is temperature-dependently moved along the division surfaces by sliding members 7a, 7b and 7c which are formed of members exhibiting different expansion/contraction corresponding to temperature change. The sliding members 7a, 7b and 7c are configured to move the divided slab waveguide 3a in their respective mutually-different temperature ranges in the operating temperature range of the arrayed waveguide grating. A sliding distance of the divided slab waveguide 3a is used as a temperature-dependence reduction amount that varies as temperature changes so as to reduce the temperature difference of the light transmission center wavelength of the arrayed waveguide grating.
摘要翻译：本发明能够降低阵列波导光栅的透光中心波长的温度依赖性。提供了一种阵列波导光栅，其具有光输入波导2，第一平板波导3，包括相互不同长度的多个波导的阵列波导，第二平板波导5和多个光输出波导6.第一平板波导3沿着划分表面8将光路穿过分开的平板波导3a和3b。分开的板状波导管3a通过由对应于温度变化而具有不同的膨胀/收缩的部件形成的滑动部件7a，7b和7c沿分割面温度依赖地移动。滑动构件7a，7b和7c构造成在阵列波导光栅的工作温度范围内使其分开的平板波导3a在它们各自相互不同的温度范围内移动。使用分割板状波导管3a的滑动距离作为随温度变化而变化的温度依赖性降低量，以降低阵列波导光栅的透光中心波长的温度差。

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