公开(公告)号：US08593201B2

公开(公告)日：2013-11-26

申请号：US13527510

申请日：2012-06-19

申请人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Hideyuki Nosaka ,  Makoto Nakamura ,  Koichi Murata ,  Masatoshi Tobayashi ,  Eisuke Tsuchiya

发明人： Kimikazu Sano ,  Hiroyuki Fukuyama ,  Hideyuki Nosaka ,  Makoto Nakamura ,  Koichi Murata ,  Masatoshi Tobayashi ,  Eisuke Tsuchiya

IPC分类号： H03L5/00

CPC分类号： H03K19/017545

摘要： In a signal output circuit, an input buffer externally receives a single-phase switching instruction signal to switch a state of the output circuit a shutdown disable state or a shutdown enable state, and converts and outputs the single-phase switching instruction signal into a differential switching instruction signal. A generation control circuit outputs a generation control signal for controlling generation of a control voltage in the control voltage generation circuit based on the differential switching instruction signal. A control voltage generation circuit outputs the control voltage upon changing a value of the control voltage in accordance with a logic of the single-phase switching instruction signal. An output circuit externally receives a differential input signal, outputs a differential output signal upon impedance-converting the differential input signal, and switches between the shutdown disable state and the shutdown enable state of the differential input signal.

摘要翻译： 在信号输出电路中，输入缓冲器从外部接收单相开关指令信号，以将输出电路的状态切换到关闭禁止状态或关断使能状态，并将单相切换指令信号转换并输出到差分 切换指令信号。 一代控制电路根据差动切换指示信号输出用于控制控制电压产生电路中的控制电压产生的发电控制信号。 控制电压产生电路根据单相切换指令信号的逻辑改变控制电压的值来输出控制电压。 输出电路从外部接收差分输入信号，通过对差分输入信号进行阻抗转换来输出差分输出信号，并在差分输入信号的关断禁止状态和关断使能状态之间切换。

公开(公告)号：US08569674B2

公开(公告)日：2013-10-29

申请号：US12673895

申请日：2007-08-21

申请人： Ryosuke Saito ,  Hisanobu Tanigawa ,  Takashi Goh ,  Ryoichi Kasahara

发明人： Ryosuke Saito ,  Hisanobu Tanigawa ,  Takashi Goh ,  Ryoichi Kasahara

IPC分类号： H03F3/08

CPC分类号： G01J1/44 ,  H01L31/101

摘要： A low cost photocurrent monitoring circuit is provided. A photocurrent monitoring circuit, which performs monitoring by converting photocurrents output from a plurality of photodiodes (PD1 to PDn) into voltage, includes: a multiplexer circuit (MUX) for selecting one of input terminals to establish a connection of the selected input terminal to an output terminal, wherein the photodiodes (PD1 to PDn) are respectively connected to the input terminals; and an amplifier (LA) for converting a photocurrent which flows from a selected photodiode via the multiplexer circuit (MUX) into a voltage, and for outputting the voltage.

摘要翻译： 提供了低成本的光电流监测电路。 通过将从多个光电二极管（PD1至PDn）输出的光电流转换成电压进行监视的光电流监视电路包括：多路复用器电路（MUX），用于选择输入端之一以建立所选输入端与 输出端子，其中所述光电二极管（PD1至PDn）分别连接到所述输入端子; 以及用于将通过多路复用器电路（MUX）从所选择的光电二极管流动的光电流转换成电压并用于输出电压的放大器（LA）。

公开(公告)号：US08545111B2

公开(公告)日：2013-10-01

申请号：US12666583

申请日：2008-06-30

申请人： Takaharu Ohyama ,  Yoshiyuki Doi ,  Ikuo Ogawa ,  Akimasa Kaneko ,  Yasuaki Tamura ,  Yuichi Suzuki

发明人： Takaharu Ohyama ,  Yoshiyuki Doi ,  Ikuo Ogawa ,  Akimasa Kaneko ,  Yasuaki Tamura ,  Yuichi Suzuki

IPC分类号： G02B6/36

CPC分类号： G02B6/42 ,  G02B6/12019 ,  G02B6/30 ,  G02B6/4201 ,  G02B6/4267 ,  G02B6/4268 ,  G02B6/4281 ,  G02B6/4283 ,  H01L2224/48091 ,  H01S5/02208 ,  H01S5/02248 ,  H01S5/02284 ,  H01L2924/00014

摘要： An optical module has a structure for reducing the stress applied to a package. The optical module is structured so that an end face of a waveguide (37) of a planar lightwave circuit (30) is joined to a plurality of packages (40) storing therein optical elements so that the waveguide is optically coupled to the optical elements. The optical module includes a housing (3) storing therein a planar lightwave circuit and a plurality of packages in which an upper face of a protrusion (270) formed in the bottom section is fixed to the planar lightwave circuit (30). Each of the plurality of packages (40) is electrically connected to an electric part (22) provided in the housing (3) via flexible printed circuits (271a, 271b).

摘要翻译： 光学模块具有用于减小施加到包装上的应力的结构。 光学模块被构造成使得平面光波电路（30）的波导（37）的端面与存储有光学元件的多个封装（40）接合，使得波导光耦合到光学元件。 光学模块包括容纳有平面光波电路的壳体（3）和形成在底部的突起（270）的上表面固定在平面光波回路（30）上的多个封装体。 所述多个封装体（40）中的每一个通过柔性印刷电路（271a，271b）电连接到设置在所述壳体（3）中的电气部件（22）。

公开(公告)号：US20130058608A1

公开(公告)日：2013-03-07

申请号：US13698573

申请日：2011-05-10

申请人： Keiichi Morita ,  Kazumi Shimizu ,  Kouji Kawashima ,  Tomoharu Niitsu

发明人： Keiichi Morita ,  Kazumi Shimizu ,  Kouji Kawashima ,  Tomoharu Niitsu

IPC分类号： G02B6/34

CPC分类号： G02B6/12014 ,  G02B6/12011 ,  G02B6/2813 ,  G02B6/29344

摘要： A technique that does not increase the circuit size, does not make the circuit design and manufacturing difficult, and can reduce insertion loss when light enters from a slab waveguide toward an arrayed waveguide or when the light enters from the arrayed waveguide toward the slab waveguide. An optical waveguide provided with a slab waveguide in which a grating is formed therein at a distance from an end, and an arrayed waveguide whose end is connected to an end of the slab waveguide at a position where a constructive interference portion of a self-image of the grating is formed. An arrayed waveguide grating provided with a first input/output waveguide, the above-mentioned optical waveguide where an end of the slab waveguide on the opposite side of the arrayed waveguide is connected to an end of the first input/output waveguide, a second slab waveguide connected to an end of the arrayed waveguide on the opposite side of the slab waveguide, and a second input/output waveguide connected to an end of the second slab waveguide on the opposite side of the arrayed waveguide.

摘要翻译： 不增加电路尺寸的技术不会使电路设计和制造困难，并且当光从平板波导朝向阵列波导进入时或当光从阵列波导进入平板波导时可以减少插入损耗。 一种具有平板波导的光波导，其中在其中与一端距离形成光栅，以及阵列波导，其端部连接到平板波导的一端，其中自身图像的构造干涉部分 形成光栅。 设置有第一输入/输出波导的阵列波导光栅，上述光波导，其中阵列波导的相对侧上的平板波导的端部连接到第一输入/输出波导的端部，第二平板 波导连接到平板波导的相对侧的阵列波导的端部，以及连接到阵列波导的相对侧的第二平板波导的端部的第二输入/输出波导。

公开(公告)号：US20120207182A1

公开(公告)日：2012-08-16

申请号：US13497898

申请日：2010-09-22

申请人： Hidetoshi Suzuki ,  Kazufumi Watanabe ,  Eiko Sone ,  Masayoshi Kubozono ,  Masashi Takada

发明人： Hidetoshi Suzuki ,  Kazufumi Watanabe ,  Eiko Sone ,  Masayoshi Kubozono ,  Masashi Takada

IPC分类号： H04J3/06

CPC分类号： H04N7/52 ,  H04N21/236 ,  H04N21/23655 ,  H04N21/242

摘要： An encoding apparatus 2 includes: an encoding unit 21 that encodes and multiplexes a video signal V2, an audio signal A2 and a data signal D2 to be given to the encoding apparatus 2; a timer 22 that outputs time information T2; a timer adjusting unit 23 that adjusts the timer 22 so that the time information T2 and time information T1 within a multiplexed stream S1 outputted from an encoding apparatus 1 are synchronized with each other; and a multiplexing unit 24 that multiplexes the multiplexed stream S1, an encoded stream S21 outputted from the encoding unit 21 and the time information T2, and outputs the resultant multiplexed stream and information as output of the encoding apparatus 2. Third and subsequent encoding apparatus are configured to have the same configuration as that of the encoding apparatus 2.

摘要翻译： 编码装置2包括：编码单元21，对编码装置2给出的视频信号V2，音频信号A2和数据信号D2进行编码和复用; 输出时间信息T2的定时器22; 定时器调整单元23，其调整定时器22，使得从编码装置1输出的复用流S1内的时间信息T2和时间信息T1彼此同步; 以及复用单元24，多路复用流S1，从编码单元21输出的编码流S21和时间信息T2，并输出所生成的多路复用流和信息作为编码装置2的输出。第三和随后的编码装置 被配置为具有与编码装置2相同的配置。

公开(公告)号：US20120193740A1

公开(公告)日：2012-08-02

申请号：US13356104

申请日：2012-01-23

申请人： Yoshiyuki Doi ,  Yoshifumi Muramoto ,  Takaharu Ohyama

发明人： Yoshiyuki Doi ,  Yoshifumi Muramoto ,  Takaharu Ohyama

IPC分类号： H01L31/0232

CPC分类号： H01L27/1446 ,  H01L31/0203 ,  H01L31/022408 ,  H01L31/02327 ,  H01L31/105 ,  H01L2224/48091 ,  H01L2224/49175 ,  H01L2224/73265 ,  H01L2924/12032 ,  H01L2924/00014 ,  H01L2924/00

摘要： The present invention is intended to provide a compact and simple optical semiconductor device that reduces crosstalk (leakage current) between light receiving elements. According to the present invention, since a back surface electrode is a mirror-like thin film, crosstalk to an adjacent light receiving element can be suppressed, thereby reducing a detection error of a light intensity. By disposing a patterned back surface electrode or by disposing an ohmic electrode at the bottom of an insulating film over the whole back surface, contact resistance on the back surface can be reduced. By using the optical semiconductor elements with a two-dimensional arrangement and by using a mirror-like thin film as the back surface electrode, crosstalk can be reduced. By accommodating the optical semiconductor elements in the housing in a highly hermetic condition, the optical semiconductor elements can be protected from an external environment.

摘要翻译： 本发明旨在提供一种紧凑且简单的光学半导体器件，其减少光接收元件之间的串扰（漏电流）。 根据本发明，由于背面电极是镜面状的薄膜，因此能够抑制与相邻的受光元件的串扰，能够降低光强度的检测误差。 通过设置图案化的背面电极或通过在整个背面的绝缘膜的底部设置欧姆电极，可以降低背面的接触电阻。 通过使用具有二维排列的光半导体元件和通过使用镜面状的薄膜作为背面电极，可以降低串扰。 通过将光学半导体元件容纳在高度密封状态的壳体中，可以保护光学半导体元件免受外部环境的影响。

公开(公告)号：US20120147910A1

公开(公告)日：2012-06-14

申请号：US13326078

申请日：2011-12-14

申请人： Nobuyuki Kondo ,  Chikara Amano

发明人： Nobuyuki Kondo ,  Chikara Amano

IPC分类号： H01S5/06

CPC分类号： H01S5/0612 ,  H01S5/02415 ,  H01S5/02446 ,  H01S5/065 ,  H01S5/0652 ,  H01S5/06812 ,  H01S5/0683 ,  H01S5/141 ,  H01S5/146 ,  H01S2301/16

摘要： A semiconductor laser device that outputs light while periodically varying the temperature of a semiconductor laser, an optical waveguide, or a diffraction grating, outputs light while causing the optical waveguide or the diffraction grating to mechanically and periodically vary, or causes return light, which varies periodically or non-periodically, to be incident on the semiconductor laser. Since the periodical fluctuation is applied to the temperature of the semiconductor laser, the optical waveguide, or diffraction grating, the periodical mechanical variation is applied to the optical waveguide or the diffraction grating, or the return light is caused to be incident on the semiconductor laser, the semiconductor laser carries out a multimode oscillation from a low output to a high output without shifting between a single mode oscillation and a multimode oscillation.

摘要翻译： 在周期性地改变半导体激光器，光波导或衍射光栅的温度的同时输出光的半导体激光器件，在使光波导或衍射光栅机械地和周期性地变化或引起返回光的同时输出光，其变化 周期地或非周期性地入射在半导体激光器上。 由于周期性波动被应用于半导体激光器，光波导或衍射光栅的温度，所以周期性机械变化被施加到光波导或衍射光栅，或者返回光入射到半导体激光器 ，半导体激光器从低输出到高输出执行多模振荡，而不会在单模振荡和多模振荡之间移位。

公开(公告)号：US20120106969A1

公开(公告)日：2012-05-03

申请号：US13317646

申请日：2011-10-25

申请人： Hiroshi Ogiwara ,  Tsutomu Aiba ,  Shigeru Ono ,  Kouichi Ogihara

发明人： Hiroshi Ogiwara ,  Tsutomu Aiba ,  Shigeru Ono ,  Kouichi Ogihara

IPC分类号： H04J14/02

CPC分类号： H04J14/0279 ,  H04B10/07957 ,  H04B10/516 ,  H04B10/572 ,  H04J14/0273 ,  H04J14/06

摘要： A communications apparatus includes a transmitter that transmits signal light that is wavelength division multiplexed with other signal light and that is to be transmitted to an opposing apparatus, and a processor that is operative to change a frequency of the signal light to be transmitted by the transmitter based on detection results at the opposing apparatus and concerning variation in the frequency of the transmitted signal light.

摘要翻译： 通信装置包括发射机，其发射与其他信号光波分复用并将被发送到相对设备的信号光;以及处理器，其可操作以改变由发射机发射的信号光的频率 基于相对设备处的检测结果和发射信号光的频率变化。

公开(公告)号：US20110241150A1

公开(公告)日：2011-10-06

申请号：US13133990

申请日：2009-12-11

申请人： Tadao Ishibashi ,  Seigo Ando ,  Yoshifumi Muramoto ,  Fumito Nakajima ,  Haruki Yokoyama

发明人： Tadao Ishibashi ,  Seigo Ando ,  Yoshifumi Muramoto ,  Fumito Nakajima ,  Haruki Yokoyama

IPC分类号： H01L31/0224

CPC分类号： H01L31/1075

摘要： An electron injected APD with an embedded n electrode structure in which edge breakdown can be suppressed without controlling the doping profile of an n-type region of the embedded n electrode structure with high precision. The APD comprising a buffer layer with a low ionization rate is inserted between an n electrode connecting layer and an avalanche multiplication layer. Specifically, the APD is an electron injected APD in which an n electrode layer, the n electrode connecting layer, the buffer layer, the avalanche multiplication layer, an electric field control layer, a band gap gradient layer, a low-concentration light absorbing layer, a p-type light absorbing layer, and a p electrode layer are sequentially stacked, and a light absorbing portion that includes at least the low-concentration light absorbing layer and the p-type light absorbing layer forms a mesa shape.

摘要翻译： 具有嵌入式n电极结构的电子注入APD，其中可以抑制边缘击穿而不以高精度控制嵌入式n电极结构的n型区域的掺杂分布。 包括具有低电离速率的缓冲层的APD插入在n电极连接层和雪崩倍增层之间。 具体地，APD是电子注入APD，其中n电极层，n电极连接层，缓冲层，雪崩倍增层，电场控制层，带隙梯度层，低浓度光吸收层 p型光吸收层和ap电极层依次层叠，并且至少包含低浓度光吸收层和p型光吸收层的光吸收部形成台面形状。

公开(公告)号：US20110229152A1

公开(公告)日：2011-09-22

申请号：US12727121

申请日：2010-03-18

申请人： Kazutaka Hara ,  Shunji Kimura ,  Hirotaka Nakamura ,  Koji Kitahara ,  Yoshikazu Urabe ,  Masahiro Endo

发明人： Kazutaka Hara ,  Shunji Kimura ,  Hirotaka Nakamura ,  Koji Kitahara ,  Yoshikazu Urabe ,  Masahiro Endo

IPC分类号： H04B10/06

CPC分类号： H04L25/0262

摘要： In the present invention, unlike a conventional circuit, discrimination is not made by integrating a logical code that includes “0” and “1” to some extent and produced from a random code, but repetition of an identical pattern of a well-known preamble signal added to a head portion of a signal is discriminated when a bit-rate of the signal is changed. More specifically, the repetition of the identical pattern is converted into a consecutive identical signal to generate the consecutive identical signal (having a length of tens bits to thousands bits). Although the consecutive identical signal is longer than a same-code continuation length included in the signal, and is shorter than a time constant necessary to the conventional circuit by about one to three digits. Therefore, an integration time can be shortened to the same degree as the generated consecutive identical signal length, and the bit-rate can be discriminated at high speed within a preamble signal receiving time.

摘要翻译： 在本发明中，与传统电路不同，不是通过将包含“0”和“1”的逻辑码在某种程度上进行积分而产生的，而是由随机码产生，而是重复公知前导码的相同模式 当信号的比特率改变时，鉴别加到信号头部的信号。 更具体地，将相同图案的重复转换为连续的相同信号，以产生连续相同的信号（具有十位至数千比特的长度）。 虽然连续相同的信号比包括在信号中的相同代码连续长度更长，并且比常规电路所需的时间常数大约一到三位数。 因此，可以将积分时间缩短到与所生成的连续相同的信号长度相同的程度，并且可以在前导码信号接收时间内以高速判别比特率。