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公开(公告)号：US20130005318A1
公开(公告)日：2013-01-03
申请号：US13519702
申请日：2010-12-27
IPC分类号： H04W4/00
摘要： In a BRE300, an RF interface for transmitting and receiving an RF signal is used for communication with a MDE 200 and a digital signal interface for transmitting and receiving a digital signal in accordance with CPRI is used for communication with BDE 300. The BRE 300 includes a monitoring signal interface configured to notify the MDE 200 of a monitoring signal indicating a state of the radio unit 50. The signal transmitted and received through the monitoring signal interface is a ground signal and is of type different from types of signals transmitted and received by the RF interface and the digital signal interface.
摘要翻译： 在BRE300中，用于发送和接收RF信号的RF接口用于与MDE 200进行通信，并且用于根据CPRI发送和接收数字信号的数字信号接口用于与BDE 300进行通信。BRE 300包括 监视信号接口，被配置为向MDE 200通知指示无线电单元50的状态的监视信号。通过监视信号接口发送和接收的信号是接地信号，并且类型与由信号发送和接收的信号的类型不同 RF接口和数字信号接口。
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公开(公告)号：US08285088B2
公开(公告)日：2012-10-09
申请号：US12068351
申请日：2008-02-05
申请人： Hirofumi Aota , Kohei Shibata , Tsuyoshi Yamamoto
发明人： Hirofumi Aota , Kohei Shibata , Tsuyoshi Yamamoto
CPC分类号： G02B6/29311 , G02B6/29313 , G02B6/3512 , G02B6/3548 , G02B6/356 , G02B6/3586 , H04J14/0201
摘要： A wavelength selective switch for suppressing degradation of pass band characteristics when the temperature rises. The wavelength selective switch includes a spectroscopic element for separating input light and providing angular dispersion depending on wavelengths, a collective lens for gathering light output from the spectroscopic element, and a movable reflection block which includes a plurality of mirrors arranged in the direction of angular dispersion made by the spectroscopic element, changes the angles of the mirrors in a direction differing from the direction of angular dispersion, and reflects the light coming from the collective lens. The collective lens is fixed at one end with respect to the direction of angular dispersion, expands with heat in a direction in which it is not fixed when the temperature rises, and outputs the light in a direction opposite to the direction in which the angle of light output from the spectroscopic element changes.
摘要翻译： 一种用于当温度升高时抑制通带特性劣化的波长选择开关。 波长选择开关包括用于分离输入光并提供取决于波长的角度色散的分光元件，用于聚集从分光元件输出的光的集体透镜，以及可移动反射块，其包括沿角度分散方向布置的多个反射镜 由分光元件制成的反射镜的角度沿与角度分散方向不同的方向改变，并且反射来自聚光透镜的光。 集体透镜相对于角度分散的方向固定在一端，当温度升高时，其在不固定的方向上以热量方式膨胀，并且沿与该角度的方向相反的方向输出光 分光元件的光输出变化。
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3.发明授权Optical semiconductor device having active layer of p-type quantum dot structure and its manufacture method 有权具有p型量子点结构的有源层的光半导体器件及其制造方法公开(公告)号：US08232125B2
公开(公告)日：2012-07-31
申请号：US12457677
申请日：2009-06-18
IPC分类号： H01L21/00
CPC分类号： H01S5/22 , B82Y20/00 , H01S5/028 , H01S5/06226 , H01S5/0655 , H01S5/3086 , H01S5/3412 , H01S5/34306 , H01S5/34353 , H01S2301/18
摘要： An active layer having a p-type quantum dot structure is disposed over a lower cladding layer made of semiconductor material of a first conductivity type. An upper cladding layer is disposed over the active layer. The upper cladding layer is made of semiconductor material, and includes a ridge portion and a cover portion. The ridge portion extends in one direction, and the cover portion covers the surface on both sides of the ridge portion. A capacitance reducing region is disposed on both sides of the ridge portion and reaching at least the lower surface of the cover portion. The capacitance reducing region has the first conductivity type or a higher resistivity than that of the ridge portion, and the ridge portion has a second conductivity type. If the lower cladding layer is an n-type, the capacitance reducing region reaches at least the upper surface of the lower cladding layer.
摘要翻译： 具有p型量子点结构的有源层设置在由第一导电类型的半导体材料制成的下包层上。 上覆层设置在有源层上。 上包层由半导体材料制成，并且包括脊部和盖部。 脊部沿一个方向延伸，并且盖部分覆盖脊部两侧的表面。 电容减小区域设置在脊部的两侧并且至少到达盖部的下表面。 电容减小区域具有比脊部分的第一导电类型或更高的电阻率，并且脊部分具有第二导电类型。 如果下包层为n型，则电容减小区域至少到达下包层的上表面。
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公开(公告)号：US08068744B2
公开(公告)日：2011-11-29
申请号：US12662726
申请日：2010-04-30
申请人： Suguru Akiyama , Tsuyoshi Yamamoto
发明人： Suguru Akiyama , Tsuyoshi Yamamoto
CPC分类号： H04B10/58 , G02B6/12004 , G02B6/12007 , G02F1/3519 , H01S5/0078 , H04B10/25 , H04B10/503 , H04B10/504
摘要： In an optical transmitter comprising a directly modulated laser and a wavelength filter provided on a post-stage of the directly modulated laser, the wavelength filter has a modulated light input port for inputting modulated light output from the directly modulated laser, a filter transmitted light output port for outputting light having a wavelength included in a filter transmission band among the modulated light as filter transmitted light, and a filter cutoff light output port provided separately from the modulated light input port and the filter transmitted light output port and outputting light having a wavelength included in a filter cutoff band among the modulated light as filter cutoff light, and the peak of the filter transmission band is set on a shorter-wave side from the peak of the spectrum of modulated light output from the directly modulated laser.
摘要翻译： 在包括直接调制激光器和设置在直接调制激光器的后级上的波长滤波器的光发射机中，波长滤波器具有用于输入从直接调制的激光器输出的调制光的调制光输入端口，滤波器透射光输出 用于输出调制光中包括在滤波器传输频带中的波长的光作为滤波器透射光的端口，以及与调制光输入端口和滤光透射光输出端口分离设置的滤光器截止光输出端口，并输出具有波长 被包含在作为滤波器截止光的调制光中的滤波器截止频带中，并且滤波器传输频带的峰值被设置在从直接调制的激光器输出的调制光谱的峰值的较短波侧。
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公开(公告)号：US08068273B2
公开(公告)日：2011-11-29
申请号：US12571787
申请日：2009-10-01
申请人： Takashi Shimizu , Koji Terada , Tsuyoshi Yamamoto
发明人： Takashi Shimizu , Koji Terada , Tsuyoshi Yamamoto
CPC分类号： G02F1/21 , G02F2001/215 , G02F2203/20 , G02F2203/21 , H04L27/2071 , H04L27/223
摘要： A demodulator and method are provided. The demodulator for demodulating an optical signal, includes a splitter that splits a differential phase modulation signal into a first split light component and a second split light component, couples the first split light component to a first optical path and the second split light component to a second optical path, a first medium disposed on the first optical path, a second medium disposed on the second optical path and having a refractive index different from that of the first medium, and a combiner that combines the first split light component that has passed through the first medium and the second split light component that has passed through the second medium, wherein one of the first split light component and the second split light component is delayed in relation to the other.
摘要翻译： 提供了一种解调器和方法。 用于解调光信号的解调器包括将差分相位调制信号分离成第一分光元件和第二分光元件的分光器，将第一分光元件耦合到第一光路，将第二分光元件耦合到 第二光路，布置在第一光路上的第一介质，设置在第二光路上并且具有与第一介质不同的折射率的第二介质，以及组合器，其组合已经穿过的第一分裂光分量 通过第二介质的第一中分光元件和第二分光元件，其中第一分光元件和第二分光元件中的一个相对于另一个延迟。
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公开(公告)号：US07991447B2
公开(公告)日：2011-08-02
申请号：US10577944
申请日：2004-07-01
申请人： Hiroki Sato , Masashi Kiguchi , Atsushi Maki , Tsuyoshi Yamamoto
发明人： Hiroki Sato , Masashi Kiguchi , Atsushi Maki , Tsuyoshi Yamamoto
IPC分类号： A61B5/1455
CPC分类号： A61B5/14553
摘要： To control information obtained from inside of a living body with higher precision as compared to that in the conventional technology by controlling a ratio of intensities of light, directed to a trial body, in a plurality of wavelength ranges different in peak wavelength from each other, a measurement error included in information obtained from the living body can be controlled by changing a ratio of intensity of the light in the first wavelength range against that of the light in the second wavelength range. When intensity of irradiated light is limited from the viewpoint of safety to the trial subject, keeping a ratio of the light irradiated to the trial body in the first wavelength range against that of the light in the second wavelength range under a prespecified value and also changing the ratio of irradiated light intensities under the prespecified value.
摘要翻译： 通过在峰值波长不同的多个波长范围内控制指向试验体的光的强度比，通过控制比现有技术更高的精度从内部获得的生物体的信息， 可以通过改变第一波长范围内的光的强度与第二波长范围内的光的强度的比例来控制从生物体获得的信息中包括的测量误差。 当照射光的强度从安全性的角度受限于试验对象时，将照射在试验体上的光的第1波长范围内的光与第2波长范围内的光的比例保持在规定值以下， 照射光强度的比例在预先指定的值之下。
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公开(公告)号：US07899283B2
公开(公告)日：2011-03-01
申请号：US12868163
申请日：2010-08-25
申请人： Manabu Matsuda , Tsuyoshi Yamamoto
发明人： Manabu Matsuda , Tsuyoshi Yamamoto
IPC分类号： G02B6/34
CPC分类号： H01S5/1228 , B82Y20/00 , H01S5/0654 , H01S5/1215 , H01S5/124 , H01S5/2209 , H01S5/2275 , H01S5/32333 , H01S5/3403 , H01S5/3434
摘要： An optical device including: an optical waveguide; and a plurality of diffraction grating layers provided along the optical waveguide, wherein each of the diffraction grating layers comprises a diffraction grating, each diffraction grating comprising a discontinuous first semiconductor layer and a second semiconductor layer burying the first semiconductor layer, the first and second semiconductor layers having different refractive indices, the plurality of diffraction grating layers comprise at least two diffraction grating layers being different from each other in terms of the length of a region where the diffraction grating is provided, and the diffraction gratings in an overlap region of the plurality of diffraction grating layers have the same phase and period is provided.
摘要翻译： 一种光学装置，包括：光波导; 以及沿着光波导设置的多个衍射光栅层，其中每个衍射光栅层包括衍射光栅，每个衍射光栅包括不连续的第一半导体层和埋入第一半导体层的第二半导体层，第一和第二半导体 具有不同折射率的层，多个衍射光栅层包括至少两个衍射光栅层相对于设置有衍射光栅的区域的长度而彼此不同，并且多个衍射光栅层的重叠区域中的衍射光栅 的衍射光栅层具有相同的相位和周期。
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公开(公告)号：US07791995B2
公开(公告)日：2010-09-07
申请号：US11668984
申请日：2007-01-30
IPC分类号： G11B7/00
CPC分类号： G11B7/0037
摘要： An image information detecting apparatus is disclosed that comprises: a semiconductor laser that emits a laser light beam; a light receiving unit that receives a reflected light beam of the laser light beam applied to a color changing layer of an optical disc, the color changing layer being formed from a photo-sensitive material of a heat-sensitive material, and that outputs an electrical signal corresponding to the level of the reflected light beam; and a detecting unit that detects image information based on the electric signal, wherein the image information detecting apparatus detects the image information indicating an image from the color changing layer after the image has been formed therein.
摘要翻译： 公开了一种图像信息检测装置，包括：发射激光的半导体激光器; 光接收单元，其接收施加到光盘的变色层的激光束的反射光束，所述变色层由感光材料的感光材料形成，并且输出电 信号对应于反射光束的电平; 以及检测单元，其基于所述电信号检测图像信息，其中所述图像信息检测装置在形成所述图像之后检测指示来自所述变色层的图像的图像信息。
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公开(公告)号：US20100221002A1
公开(公告)日：2010-09-02
申请号：US12659270
申请日：2010-03-02
申请人： Hiroki Ooi , Akira Miura , Tsuyoshi Yamamoto , Naoki Hashimoto
发明人： Hiroki Ooi , Akira Miura , Tsuyoshi Yamamoto , Naoki Hashimoto
IPC分类号： H04J14/00
CPC分类号： G02B6/29313 , G02B6/2931 , G02B6/29383 , G02B6/3512 , G02B6/356 , G02B26/0833 , H04J14/0204 , H04J14/0208 , H04J14/0212 , H04J14/0213
摘要： An OADM in a wavelength division multiplexing transmission system includes a wavelength selection switch that selects a predetermined wavelength from a multiple optical signal obtained by multiplexing a phase modulated signal and an intensity modulated signal and outputs the selected wavelength signal to a predetermined output port. The wavelength selection switch has a different delay for each wavelength of the multiple optical signal. For example, the wavelength selection switch includes a mirror array. Optical paths from the surfaces of mirrors arranged on the mirror array to the diffraction grating are different in the case of adjacent mirrors.
摘要翻译： 波分复用传输系统中的OADM包括波长选择开关，其从通过复用相位调制信号和强度调制信号获得的多个光信号中选择预定波长，并将所选择的波长信号输出到预定输出端口。 波长选择开关对于多个光信号的每个波长具有不同的延迟。 例如，波长选择开关包括反射镜阵列。 在相邻反射镜的情况下，从反射镜阵列上布置在反射镜阵列上的反射镜的表面的光路不同。
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公开(公告)号：US07732821B2
公开(公告)日：2010-06-08
申请号：US12073837
申请日：2008-03-11
IPC分类号： H01L29/72
CPC分类号： H01L29/66068 , H01L21/0465 , H01L29/0615 , H01L29/063 , H01L29/0638 , H01L29/1608 , H01L29/45 , H01L29/7828
摘要： The SiC semiconductor device includes a substrate of a first conduction type made of silicon carbide, a drift layer of the first conduction type made of silicon carbide, the drift layer being less doped than the substrate, a cell portion constituted by a part of the substrate and a part of the drift layer, a circumferential portion constituted by another part of the substrate and another part of the drift layer, the circumferential portion being formed so as to surround the cell portion, and a RESURF layer of a second conduction type formed in a surface portion of the drift layer so as to be located in the circumferential portion. The RESURF layer is constituted by first and second RESURF layers having different impurity concentrations, the second RESURF layer being in contact with an outer circumference of the first RESURF layer and extending to a circumference of the cell portion.
摘要翻译： SiC半导体器件包括由碳化硅制成的第一导电类型的衬底，由碳化硅制成的第一导电类型的漂移层，漂移层比衬底掺杂少，由衬底的一部分构成的单元部分 以及漂移层的一部分，由基板的另一部分和漂移层的另一部分构成的圆周部分，周向部分形成为围绕电池部分，以及形成在第二导电类型的RESURF层 漂移层的表面部分，以便位于圆周部分中。 RESURF层由具有不同杂质浓度的第一和第二RESURF层构成，第二RESURF层与第一RESURF层的外周接触并延伸到电池单元的周围。
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