公开(公告)号：US5659560A

公开(公告)日：1997-08-19

申请号：US431717

申请日：1995-04-28

申请人： Toshihiko Ouchi ,  Masao Majima ,  Jun Nitta ,  Seiji Mishima ,  Ouichi Kubota

发明人： Toshihiko Ouchi ,  Masao Majima ,  Jun Nitta ,  Seiji Mishima ,  Ouichi Kubota

IPC分类号： G02B6/42 ,  H01S5/026 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/10 ,  H01S5/34 ,  H01S5/343 ,  H01S3/10

CPC分类号： B82Y20/00 ,  H01S5/0264 ,  H01S5/0625 ,  H01S5/0683 ,  H01S5/06832 ,  G02B6/4246 ,  H01S2302/00 ,  H01S5/026 ,  H01S5/06236 ,  H01S5/06258 ,  H01S5/0687 ,  H01S5/1021 ,  H01S5/3404 ,  H01S5/343 ,  H01S5/34306 ,  H01S5/34313 ,  H01S5/3434

摘要： In a light source apparatus, the polarization mode of oscillation light from a semiconductor laser is switchable between two different polarization modes when a modulation current is injected into a portion of a light waveguide of the semiconductor laser. Light in one polarization mode and light in the other polarization mode are separately obtained from the oscillation light from the semiconductor laser. At least the light in one of the two different polarization modes is converted to an electric signal. Current injected into the semiconductor laser is controlled based on the electric signal such that a modulation state of light from the semiconductor laser is stabilized. The light in the other polarization mode, or light in one polarization mode emitted from the other emission side of the semiconductor laser may be used for optical transmission.

摘要翻译： 在光源装置中，当调制电流注入到半导体激光器的光波导的一部分中时，来自半导体激光器的振荡光的偏振模式可在两种不同的偏振模式之间切换。 在一个偏振模式中的光和另一个偏振模式的光分别从半导体激光器的振荡光获得。 至少将两种不同偏振模式之一的光转换为电信号。 基于电信号控制注入半导体激光器的电流，使得来自半导体激光器的光的调制状态稳定。 在另一种偏振模式中的光或者从半导体激光器的另一个发射侧发射的一种偏振模式的光可以用于光传输。

公开(公告)号：US5862165A

公开(公告)日：1999-01-19

申请号：US705297

申请日：1996-08-29

申请人： Yuichi Handa ,  Masao Majima ,  Jun Nitta

发明人： Yuichi Handa ,  Masao Majima ,  Jun Nitta

IPC分类号： G02F1/01 ,  G02F1/025 ,  G02F1/09 ,  G02F1/313 ,  H01S5/00 ,  H01S5/042 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/12 ,  H01S5/343 ,  H04B10/516 ,  H04B10/524 ,  H04B10/532 ,  H04B10/54 ,  H04B10/564 ,  H04B10/572 ,  H04B10/58 ,  H04B10/61 ,  H01S3/10

CPC分类号： B82Y20/00 ,  H01S5/0625 ,  H01S5/06258 ,  H04B10/532 ,  H01S2301/14 ,  H01S5/06236 ,  H01S5/06255 ,  H01S5/12 ,  H01S5/34306 ,  H01S5/34313

摘要： A variable wavelength light source is provided with a laser of which the oscillating state can be changed over between two oscillating states accompanied by a change of an oscillation wavelength, and an optical selection element for selecting an output light in one of the two oscillating states of the laser. The optical selection element is capable of changing over which of the output lights in the two oscillating states of the laser is to be selected. Also, by using a laser in which the oscillation wavelength in the respective oscillating states can be changed, the wavelength variation ranges in the both oscillating states can be used.

摘要翻译： 可变波长光源设置有激光，其中振荡状态可以在伴随振荡波长的变化的两个振荡状态之间变化;以及光选择元件，用于选择两个振荡状态之一的输出光 激光。 光选择元件能够改变选择激光器的两个振荡状态中的哪个输出光。 此外，通过使用其中可以改变各个振荡状态下的振荡波长的激光器，可以使用两种振荡状态下的波长变化范围。

公开(公告)号：US5309275A

公开(公告)日：1994-05-03

申请号：US716944

申请日：1991-06-18

申请人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Toru Nakata

发明人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Toru Nakata

IPC分类号： G02F1/35 ,  B82Y10/00 ,  B82Y20/00 ,  H01L27/15 ,  H01S5/00 ,  H01S5/026 ,  H01S5/32 ,  H01S5/34 ,  H01S5/50 ,  H04B10/27 ,  H04B10/272 ,  H04B10/275 ,  H04B10/278 ,  H04B10/29 ,  H04B10/297 ,  H01S3/19 ,  G02B6/12 ,  H01L33/00 ,  H04B10/12

CPC分类号： B82Y20/00 ,  H01S5/026 ,  H01S5/34 ,  H01S5/5009 ,  H04B10/2914 ,  H01S2301/14 ,  H01S5/3203

摘要： A semiconductor optical amplifying apparatus includes: a substrate; an active layer having a quantum well structure formed on the substrate, the active layer guiding first waveguide mode light and second waveguide mode light having a polarization direction perpendicular to that of the first waveguide mode light and amplifying the first waveguide mode light and the second waveguide mode light, the active layer having quantum wells such that projected quantization axes obtained by projecting quantization axes of the quantum wells thereof on a plane perpendicular to a light waveguide direction are inclined at 45.degree. with respect to vibration directions of electric field vectors of the first waveguide mode light and the second waveguide mode light; and an electrode for supplying a current to the active layer.

摘要翻译： 一种半导体光放大装置，包括：基板; 具有形成在基板上的量子阱结构的有源层，有源层引导第一波导模式光和具有与第一波导模式光垂直的偏振方向的第二波导模式光，并且放大第一波导模式光和第二波导 有源层具有量子阱，使得通过将量子阱的量子轴投影在垂直于光波导方向的平面上而获得的投影量化轴相对于第一像素的电场矢量的振动方向倾斜45度 波导模式光和第二波导模式光; 以及用于向有源层提供电流的电极。

公开(公告)号：US5223972A

公开(公告)日：1993-06-29

申请号：US708218

申请日：1991-05-31

申请人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Tohru Nakata

发明人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Tohru Nakata

IPC分类号： G02F1/35 ,  H01S3/23 ,  H01S5/00 ,  H01S5/50

CPC分类号： H01S5/5009 ,  H04B10/2914

摘要： In an optical amplifying apparatus of this invention, there are provided an optical amplifier part for giving a gain to an input light from outside and a selective loss part for giving a light loss of a prescribed ratio for different polarization modes in order to compensate for a polarization dependency of the amplification factor between the input and output lights. Thus, the difference of amplification factors for the different polarization modes is compensated for, as a whole of the apparatus. This polarization non-dependent type optical amplifying apparatus has solved the polarization dependency without degrading other characteristics, so that this can be preferably used in a optical communication system or network. Further, this amplifying apparatus does not require so many external optical components, so this is suitable to the fabrication of a module and is preferably contained in an integrated optical node.

公开(公告)号：US5414549A

公开(公告)日：1995-05-09

申请号：US191180

申请日：1994-02-03

申请人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Toru Nakata

发明人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Toru Nakata

IPC分类号： G02F1/35 ,  B82Y10/00 ,  B82Y20/00 ,  H01L27/15 ,  H01S5/00 ,  H01S5/026 ,  H01S5/32 ,  H01S5/34 ,  H01S5/50 ,  H04B10/27 ,  H04B10/272 ,  H04B10/275 ,  H04B10/278 ,  H04B10/29 ,  H04B10/297 ,  H01S3/19 ,  G02B6/12 ,  H01L33/00

CPC分类号： B82Y20/00 ,  H01S5/026 ,  H01S5/34 ,  H01S5/5009 ,  H04B10/2914 ,  H01S2301/14 ,  H01S5/3203

摘要： A semiconductor optical amplifying apparatus includes: a substrate; an active layer having a quantum well structure formed on the substrate, the active layer guiding first waveguide mode light and second waveguide mode light having a polarization direction perpendicular to that of the first waveguide mode light and amplifying the first waveguide mode light and the second waveguide mode light, the active layer having quantum wells such that projected quantization axes obtained by projecting quantization axes of the quantum wells thereof on a plane perpendicular to a light waveguide direction are inclined at 45.degree. with respect to vibration directions of electric field vectors of the first waveguide mode light and the second waveguide mode light; and an electrode for supplying a current to the active layer.

摘要翻译： 一种半导体光放大装置，包括：基板; 具有形成在基板上的量子阱结构的有源层，有源层引导第一波导模式光和具有与第一波导模式光垂直的偏振方向的第二波导模式光，并且放大第一波导模式光和第二波导 有源层具有量子阱，使得通过将量子阱的量子轴投影在垂直于光波导方向的平面上而获得的投影量化轴相对于第一像素的电场矢量的振动方向倾斜45度 波导模式光和第二波导模式光; 以及用于向有源层提供电流的电极。

公开(公告)号：US20120304993A1

公开(公告)日：2012-12-06

申请号：US13345860

申请日：2012-01-09

申请人： Kazufuku NITTA ,  Jun Nitta

发明人： Kazufuku NITTA ,  Jun Nitta

IPC分类号： A61M16/00 ,  F04B25/00

CPC分类号： A61M16/0072 ,  A61M16/0012 ,  A61M16/12 ,  A61M2016/0027 ,  A61M2016/0039 ,  A61M2205/3375 ,  A61M2205/502 ,  F04B19/006 ,  F04B43/043 ,  F04B43/046 ,  F04B45/043 ,  F04B45/047

摘要： A pump unit can achieve significant size reduction while maintaining the performance thereof. Micropumps are arranged in a lattice pattern with rows and columns, and a discharge port of at least a micropump arranged in the most downstream row is directly connected to an integrated discharge port. The pump unit further includes: a discharge direct-connection mechanism for connecting respective discharge ports of a plurality of micropumps in a middle row directly to the integrated discharge port; an intake direct-connection mechanism for connecting respective intake ports of the micropumps directly to a fluid to be supplied first; a series-connection mechanism for connecting a discharge port of a micropump in an upstream row directly to an intake port of a micropump in a downstream row; and a controller for controlling the discharge direct-connection mechanism, the intake direct-connection mechanism, and the series-connection mechanism.

摘要翻译： 泵单元可以在保持其性能的同时实现显着的尺寸减小。 微喷射器排列成具有行和列的格子图案，并且布置在最下游排中的至少一个微型泵的排出口直接连接到集成排放口。 泵单元还包括：排放直接连接机构，用于将中间排中的多个微型泵的各个排出口直接连接到集成排放口; 进气直接连接机构，用于将微型泵的各个进气口直接连接到要首先供给的流体; 用于将上游排中的微型泵的排出口直接连接到下游排的微型泵的进气口的串联机构; 以及用于控制排出直接连接机构，进气直接连接机构和串联连接机构的控制器。

公开(公告)号：US20100121621A1

公开(公告)日：2010-05-13

申请号：US12595418

申请日：2008-04-14

申请人： Akihiro Uenishi ,  Takashi Ariga ,  Shigeru Yonemura ,  Jun Nitta ,  Tohru Yoshida

发明人： Akihiro Uenishi ,  Takashi Ariga ,  Shigeru Yonemura ,  Jun Nitta ,  Tohru Yoshida

IPC分类号： G06F17/10 ,  G06F19/00

CPC分类号： G06F17/5095 ,  G01N2203/0216 ,  G06F17/5018 ,  G06F2217/42

摘要： When discretizing an analysis target part into plural elements and performing analysis, sheet thickness reduction rate or maximum principal strain at an equivalent position including a same element is compared by either a manner of combining two adjacent elements after the analysis or a manner of changing an element discretization size with two types and performing the analysis, and the element where the difference is large is extracted as a fracture risk portion.With this structure, a fracture risk portion can be extracted reliably when a fracture is predicted by a finite element method.

摘要翻译： 当将分析目标部分离散成多个元素并执行分析时，通过在分析之后组合两个相邻元素的方式或者改变元素的方式来比较包括相同元素的等效位置处的片材厚度减小率或最大主应变 两种类型的离散化大小进行分析，提取差异较大的元素作为断裂风险部分。 利用这种结构，当通过有限元法预测断裂时，可以可靠地提取断裂风险部分。

公开(公告)号：US20060138363A1

公开(公告)日：2006-06-29

申请号：US11293148

申请日：2005-12-05

申请人： Akira Yonezawa ,  Tatenori Jinriki ,  Jun Nitta ,  Norimichi Anazawa ,  Ryuichi Shimizu

发明人： Akira Yonezawa ,  Tatenori Jinriki ,  Jun Nitta ,  Norimichi Anazawa ,  Ryuichi Shimizu

IPC分类号： G01J3/10

CPC分类号： H01J37/185 ,  B08B7/0057 ,  H01J37/28 ,  H01J2237/022

摘要： A charged particle beam apparatus comprising a preparatory evacuation chamber (15 in FIG. 1A) into which a sample (12) is conveyed and which is preliminarily evacuated, an ultraviolet irradiation unit (21) which is disposed in the preparatory evacuation chamber (15) and which irradiates the surface of the sample (12) conveyed into the preparatory evacuation chamber (15), with ultraviolet rays for a predetermined time period, and a sample chamber (16) into which the sample (12) is conveyed in the preliminarily evacuated state of the preparatory evacuation chamber (15) or from which the sample (12) is conveyed into the preparatory evacuation chamber (15), wherein the ultraviolet irradiation of the sample (12) by the ultraviolet irradiation unit (21) is performed before the conveyance of the sample (12) into the sample chamber (16), or/and after the conveyance thereof from the sample chamber (16), thereby to remove contamination on the surface of the sample (12).

摘要翻译： 一种带电粒子束装置，包括：预先抽真空室（图1A中的15），其中输送样品（12）并预先抽真空;紫外线照射单元（21），设置在预备抽空室 ），并且用紫外线照射经预定的时间段的被输送到预备抽空室（15）的样品（12）的表面，以及将样品（12）预先传送到的样品室 预备排空室（15）的抽真空状态或将样品（12）从该排空状态输送到预备抽空室（15）中，其中紫外线照射单元（21）对样品（12）的紫外线照射在 将样品（12）输送到样品室（16）中，或者在从样品室（16）传送之后，从而去除样品表面上的污染物 （12）。

公开(公告)号：US06334014B1

公开(公告)日：2001-12-25

申请号：US09427661

申请日：1999-10-27

申请人： Jun Nitta ,  Yuichi Handa ,  Takahiro Numai

发明人： Jun Nitta ,  Yuichi Handa ,  Takahiro Numai

IPC分类号： G02B626

CPC分类号： G02B6/29358 ,  G02B6/02038 ,  G02B6/02061 ,  G02B6/2938

摘要： An optical fiber apparatus includes an optical fiber, and a demultiplexing/multiplexing unit for demultiplexing or multiplexing at least a light wave of at least a wavelength with a sufficiently narrow wavelength spectrum that is determined by a resolving power thereof, such as a Fabry-Perot etalon. The demultiplexing/multiplexing unit is provided or formed directly on at least an end face of the optical fiber. An optical detector array including a plurality of optical detectors for detecting demultiplexed light waves may be provided on a light emergence surface of of the demultiplexing/multiplexing unit.

摘要翻译： 一种光纤装置，包括光纤，以及解复用/多路复用单元，用于至少解复用或多路复用至少具有由其分辨能力确定的足够窄的波长谱的波长的光，例如Fabry-Perot 标准具。 解复用/多路复用单元直接设置在光纤的至少端面上。 包括用于检测解复用光波的多个光检测器的光检测器阵列可以设置在解复用/复用单元的出光表面上。

公开(公告)号：US5309268A

公开(公告)日：1994-05-03

申请号：US123900

申请日：1993-09-20

申请人： Kenji Nakamura ,  Jun Nitta

发明人： Kenji Nakamura ,  Jun Nitta

IPC分类号： H04B10/29 ,  H04B10/00 ,  H04B10/02

CPC分类号： H04B10/29

摘要： In an optical communication system, a transmitted signal is modulated with a subcarrier signal having a frequency higher than the frequency of said transmitted signal on the transmission side, the modulated signal light emitted to a transmission channel. On the reception side, the received signal is filtered and decoded by means of a band-pass filter having a center frequency approximately equal to the frequency of the subcarrier signal of the received signal. The above arrangement makes it possible to achieve an arrangement free from the influence of deterioration in the degree of modulation due to spontaneous emission generated from an optical amplifier disposed midway along the transmission channel. The optical amplifier may be an optical differential gain amplifier which has the differential-gain optical input/output characteristics of outputting spontaneous emission of low intensity according to a digital signal value "0" and output light of high intensity according to a digital signal value "1". The arrangement enables optical amplification of signal light without the risk of outputting high-level spontaneous emission due to direct current excitation. It is therefore possible to provide received signals of high quality by eliminating any deterioration in S/N ratio and any deterioration of the degree of modulation of signal light due to spontaneous emission from the optical amplifier disposed midway along the transmission channel.

摘要翻译： 在光通信系统中，利用在发送侧的频率高于所述发送信号的频率的副载波信号来调制发送信号，发送到发送信道的调制信号光。 在接收侧，接收信号被滤波和借助于具有与接收信号的子载波信号的频率近似的中心频率的带通滤波器进行解码。 上述布置使得可以实现不受由沿着传输通道中途设置的光放大器产生的自发发射的调制程度的劣化的影响的布置。 光放大器可以是光差分增益放大器，其具有根据数字信号值“0”输出低强度的自发发射的差分增益光输入/输出特性，并且根据数字信号值“ 1“。 该装置能够对信号光进行光放大，而不会由于直流激励而输出高电平自发发射的风险。 因此，通过消除S / N比的任何劣化以及由于沿着传输通道设置的中途的光放大器的自发发射而导致的信号光的调制程度的任何劣化，可以提供高质量的接收信号。