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1. 发明授权

US5506542A Filter circuit and filter integrated circuit 失效
标题翻译：滤波电路和滤波器集成电路
公开(公告)号：US5506542A
公开(公告)日：1996-04-09
申请号：US152838
申请日：1993-11-12
申请人： Hiroshi Hamano , Izumi Amemiya , Yoichi Oikawa , Takuji Yamamoto , Takeshi Ihara , Yoshinori Nishizawa
发明人： Hiroshi Hamano , Izumi Amemiya , Yoichi Oikawa , Takuji Yamamoto , Takeshi Ihara , Yoshinori Nishizawa
IPC分类号： H03H11/04 , H03H11/12 , H03K5/01
CPC分类号： H03H11/1213
摘要： A filter circuit and a filter integrated circuit capable of being used in a high frequency band includes a first resistor R.sub.1 connected between an input signal source and an emitter of a common-base transistor TR.sub.1, a first capacitor C.sub.1 connected between said input signal source and a reference voltage point, a second capacitor C.sub.2 connected between said input signal source and a collector of the common-base transistor TR.sub.1, and a second resistor R.sub.2 connected between the collector of the common-base transistor and the reference voltage point. Thus, a low-pass filter which operates in a high frequency band and suppresses the influence of characteristic parameters over the filter characteristic can be constructed.
摘要翻译：能够在高频带中使用的滤波器电路和滤波器集成电路包括连接在公共基极晶体管TR1的输入信号源和发射极之间的第一电阻器R1，连接在所述输入信号源和参考电压点，连接在所述输入信号源和共基极晶体管TR1的集电极之间的第二电容器C2，以及连接在共基极晶体管的集电极和参考电压点之间的第二电阻器R2。因此，可以构成在高频带下工作的低通滤波器，抑制特性参数对滤波器特性的影响。

2. 发明授权

US5293087A Filter circuit and filter integrated circuit 失效
标题翻译：滤波电路和滤波器集成电路
公开(公告)号：US5293087A
公开(公告)日：1994-03-08
申请号：US963574
申请日：1992-10-19
申请人： Hiroshi Hamano , Izumi Amemiya , Yoichi Oikawa , Takuji Yamamoto , Takeshi Ihara , Yoshinori Nishizawa
发明人： Hiroshi Hamano , Izumi Amemiya , Yoichi Oikawa , Takuji Yamamoto , Takeshi Ihara , Yoshinori Nishizawa
IPC分类号： H03H11/04 , H03H11/12 , H03K5/01
CPC分类号： H03H11/1213
摘要： A filter circuit and a filter integrated circuit capable of being used in a high frequency band comprises a first resistor R.sub.1 connected between an input signal source and an emitter of a common-base transistor TR.sub.1, a first capacitor C.sub.1 connected between said input signal source and a reference voltage point, a second capacitor C.sub.2 connected between said input signal source and a collector of the common-base transistor TR.sub.1, and a second resistor R.sub.2 connected between the collector of the common-base transistor and the reference voltage point. Thus, a low-pass filter which operates in a high frequency band and suppresses the influence of characteristic parameters over the filter characteristic can be constructed.
摘要翻译：能够在高频带中使用的滤波器电路和滤波器集成电路包括连接在公共基极晶体管TR1的输入信号源和发射极之间的第一电阻器R1，连接在所述输入信号源和参考电压点，连接在所述输入信号源和共基极晶体管TR1的集电极之间的第二电容器C2，以及连接在共基极晶体管的集电极和参考电压点之间的第二电阻器R2。因此，可以构成在高频带下工作的低通滤波器，抑制特性参数对滤波器特性的影响。

3. 发明授权

US5999289A Detection of, and compensation for, waveform change due to chromatic dispersion 失效
标题翻译：由于色散引起的波形变化的检测和补偿
公开(公告)号：US5999289A
公开(公告)日：1999-12-07
申请号：US35852
申请日：1998-03-06
申请人： Takeshi Ihara , Yoichi Oikawa
发明人： Takeshi Ihara , Yoichi Oikawa
IPC分类号： H04B10/2507 , H04B10/07 , H04B10/2525 , H04J14/02 , G01N21/00
CPC分类号： H04B10/25133 , H04B2210/252
摘要： Waveform degradation due to chromatic dispersion of an optical fiber is detected and compensated for. A waveform detector detects a change in waveform, based on the ratio between the powers of a plurality of frequency components or on peak or duty detection, and the frequency bandwidth of an equalizing amplifier or the chromatic dispersion of an optical fiber is controlled based on the result of the detection.
摘要翻译：检测并补偿由于光纤的色散引起的波形劣化。波形检测器基于多个频率分量的功率之间或峰值或占空比检测来检测波形变化，并且基于均衡放大器的频率带宽或光纤的色散来控制光纤的色散检测结果。

4. 发明授权

US07440648B2 Wavelength selective switch 失效
标题翻译：波长选择开关
公开(公告)号：US07440648B2
公开(公告)日：2008-10-21
申请号：US11157985
申请日：2005-06-22
申请人： Yoichi Oikawa , Kazuaki Akimoto
发明人： Yoichi Oikawa , Kazuaki Akimoto
IPC分类号： G02B6/26
CPC分类号： H04Q11/0005 , H04Q2011/003 , H04Q2011/0032
摘要： A wavelength selective switch of the invention separates WDM light coming out from an input fiber of a fiber collimator array according to its wavelength, in a diffraction grating, and reflects each wavelength channel proceeding in different directions by MEMS mirrors corresponding to a mirror array. In the MEMS mirrors, the angles of their reflecting surfaces are set corresponding to the location of the output port which is set in the output address of the wavelength channel to be injected. For each of the wavelength channels that reach the target output port, one part of each is reflected by the end face of an output fiber, and the reflected light is returned to the input port, and sent to a channel monitor via an optical circulator, so that the optical power corresponding to each wavelength channel is monitored. As a result it is possible to provide a small size, and low-cost, wavelength selective switch, that can monitor the power of each wavelength channel guided to a plurality of output ports, with good accuracy.
摘要翻译：本发明的波长选择开关根据其波长在衍射光栅中分离从光纤准直器阵列的输入光纤出来的WDM光，并且通过与镜阵列相对应的MEMS镜反射在不同方向上的每个波长信道。在MEMS反射镜中，其反射表面的角度对应于设置在要注入的波长通道的输出地址中的输出端口的位置。对于到达目标输出端口的每个波长通道，每个波长通道的一部分被输出光纤的端面反射，并且反射光返回到输入端口，并经由光循环器发送到通道监视器，从而监视对应于每个波长信道的光功率。结果，可以提供小尺寸和低成本的波长选择开关，其可以以高精度监视引导到多个输出端口的每个波长通道的功率。

5. 发明申请

US20080166128A1 OPTICAL APPARATUS USING POLARIZED ORTHOGONAL CONTROL 失效
标题翻译：使用极化正交控制的光学设备
公开(公告)号：US20080166128A1
公开(公告)日：2008-07-10
申请号：US11950222
申请日：2007-12-04
申请人： Takashi TOYOMAKI , Noriaki Mizuguchi , Yoichi Oikawa
发明人： Takashi TOYOMAKI , Noriaki Mizuguchi , Yoichi Oikawa
IPC分类号： H04J14/02
CPC分类号： H04B10/532 , H04J14/02 , H04J14/06
摘要： An optical apparatus comprising, converting units converting electrical signals into signal lights with different wavelength, polarization control units controlling polarizing states of the signal lights into polarization controlled lights respectively, an optical multiplexer multiplexing the polarization controlled lights into a multiplexed light, an optical branching unit branching the multiplexed light and outputting a branched light, a polarizing unit extracting only signal lights of the specified polarizing state from the branched light into an extracted light, and a control unit detecting intensity of the extracted light. Pilot signals are applied to modulate the electrical signals or the polarization controls. The polarization control units controls the polarizing states of the signal lights based on the pilot signal frequencies of the detection result by the control unit.
摘要翻译：一种光学装置，包括：将电信号转换成具有不同波长的信号光的单元，分别将信号光的偏振状态分别控制为偏振控制光的偏振控制单元，将多路复用光转换为多路复用光的光学多路复用光;光分路单元分支多路复用光并输出分支光;偏振单元，其将仅从分支光的指定偏振状态的信号光提取到提取的光中;以及控制单元，其检测所提取的光的强度。应用导频信号来调制电信号或极化控制。偏振控制单元基于控制单元的检测结果的导频信号频率来控制信号光的偏振状态。

6. 发明申请

US20050089275A1 Optical device module 有权
标题翻译：光器件模块
公开(公告)号：US20050089275A1
公开(公告)日：2005-04-28
申请号：US10807520
申请日：2004-03-24
申请人： Yoichi Oikawa , Hirofumi Aota , Kazuaki Akimoto , Hideyuki Miyata , Yumi Nakazawa , Tadao Nakazawa
发明人： Yoichi Oikawa , Hirofumi Aota , Kazuaki Akimoto , Hideyuki Miyata , Yumi Nakazawa , Tadao Nakazawa
IPC分类号： G02B6/12 , G02F1/125 , G02B6/26 , G02B6/42
CPC分类号： G02F1/125
摘要： An optical device module includes an optical device with a plurality of electrodes disposed at predetermined positions, a substrate disposed oppositely to the optical device and with wiring patterns for connecting to the electrodes, and a wiring which connects the electrodes to the wiring patterns.
摘要翻译：光学装置模块包括具有设置在预定位置的多个电极的光学装置，与光学装置相对设置的基板和用于连接到电极的布线图案，以及将电极连接到布线图案的布线。

7. 发明授权

US07522843B2 Optical repeater converting wavelength and bit rate between networks 有权
标题翻译：光中继器转换网络之间的波长和比特率
公开(公告)号：US07522843B2
公开(公告)日：2009-04-21
申请号：US12193199
申请日：2008-08-18
申请人： Yoichi Oikawa
发明人： Yoichi Oikawa
IPC分类号： H04J14/02 , H04B10/02
CPC分类号： H04B10/271 , H04B10/27 , H04B10/275 , H04B10/29 , H04J14/02
摘要： An optical repeater which includes a wavelength converter and a bit rate converter. The wavelength converter converts a wavelength of an optical signal from a first optical network to a wavelength of a second optical network. The bit rate converter converts a bit rate of the optical signal from the first optical network to a bit rate of the second optical network. The optical repeater transmits the optical signal from the first optical network to the second optical network at the converted bit rate and wavelength.
摘要翻译：一种包括波长转换器和比特率转换器的光中继器。波长转换器将来自第一光网络的光信号的波长转换为第二光网络的波长。比特率转换器将来自第一光网络的光信号的比特率转换为第二光网络的比特率。光中继器以转换比特率和波长将光信号从第一光网络传输到第二光网络。

8. 发明申请

US20070297718A1 Temperature-independent optical wavelength identification apparatus and optical wavelength identification method 失效
标题翻译：温度独立光波长识别装置和光波长识别方法
公开(公告)号：US20070297718A1
公开(公告)日：2007-12-27
申请号：US11783392
申请日：2007-04-09
申请人： Yoichi Oikawa
发明人： Yoichi Oikawa
IPC分类号： G02B6/26
CPC分类号： G02B6/29398 , G02B6/12019 , G02B6/12026 , G02B6/29311 , G02B6/356 , G02B6/4201 , G02B6/4215
摘要： The distance between an optical diffraction device and a focusing lens, and the coefficient of the focal length change of the focusing lens, are adjusted based on the calculation expression of wavelength identification errors in light of temperature change of a member making up light receiving means (e.g., PD array), thereby performing correction of wavelength identification errors, whereby optical wavelength identification can be performed with high precision even when the temperature changes.
摘要翻译：基于构成光接收装置的构件的温度变化的波长识别误差的计算表达式，调整光学衍射装置与聚焦透镜之间的距离以及聚焦透镜的焦距变化系数（例如PD阵列），从而执行波长识别误差的校正，由此即使当温度改变时也可以以高精度进行光波长识别。

9. 发明授权

US07206476B2 Optical switch 失效
标题翻译：光开关
公开(公告)号：US07206476B2
公开(公告)日：2007-04-17
申请号：US11123095
申请日：2005-05-06
申请人： Yoichi Oikawa , Satoshi Kuroyanagi
发明人： Yoichi Oikawa , Satoshi Kuroyanagi
IPC分类号： G02B6/26 , G02B6/42
CPC分类号： G02B6/3514 , G02B6/122 , G02B6/3512 , G02B6/3518 , G02B6/3538 , G02B6/3546 , G02B6/356 , G02B6/3582 , G02B2006/12145 , H04Q11/0005 , H04Q2011/0024 , H04Q2011/003
摘要： An optical switch having a plurality of switch cells. The optical switch has n inputs (n is a natural number) and m outputs (m is a natural number). The optical switch has a unit size defined as the distance between any two adjacent ones of the switch cells. The optical switch comprises a substrate having a switch size of K×L (K is an integer satisfying n≦K, and L is an integer satisfying m≦L), first and second mirrors parallel to each other and perpendicular to a principal surface of the substrate, and an optical unit providing a plurality of input optical paths for the n inputs and a plurality of output optical paths for the m outputs. The plurality of input optical paths are inclined relative to the first and second mirrors, and the plurality of output optical paths are inclined relative to the first and second mirrors. Each switch cell comprises a switch mirror provided movably relative to the substrate. With this configuration, the path dependence of loss is substantially eliminated.
摘要翻译：具有多个开关单元的光开关。光开关具有n个输入（n是自然数），m个输出（m是自然数）。光开关具有被定义为任何两个相邻的开关单元之间的距离的单位尺寸。光开关包括开关尺寸为KxL（K为满足n <= K的整数，L为满足m <= L的整数）的基板，第一和第二反射镜彼此平行并垂直于基板和为n个输入提供多个输入光路的光学单元和用于m个输出的多个输出光路。多个输入光路相对于第一和第二反射镜倾斜，并且多个输出光路相对于第一和第二反射镜倾斜。每个开关单元包括相对于基板可移动地设置的开关镜。利用这种配置，基本上消除了损耗的路径依赖性。

10. 发明申请

US20050089282A1 Optical device module 有权
标题翻译：光器件模块
公开(公告)号：US20050089282A1
公开(公告)日：2005-04-28
申请号：US10805481
申请日：2004-03-22
申请人： Yoichi Oikawa , Hirofumi Aota , Kazuaki Akimoto , Hideyuki Miyata , Tadao Nakazawa , Yumi Nakazawa
发明人： Yoichi Oikawa , Hirofumi Aota , Kazuaki Akimoto , Hideyuki Miyata , Tadao Nakazawa , Yumi Nakazawa
IPC分类号： G02B6/12 , G02B7/00 , G02F1/11 , G02F1/125 , G02B6/36
CPC分类号： G02B7/008 , G02F1/116 , G02F2203/60
摘要： An optical device module includes an optical device, a soaking unit fixed to one surface of the optical device, a heating/cooling unit fixed to one surface of the soaking unit, a heat-insulating unit fixed to one surface of the heating/cooling unit, and a package that houses the optical device, the soaking unit, the heating/cooling unit, and the heat-insulating unit and to which the heat-insulating unit is fixed. The heating/cooling unit heats the optical device using self-generated heat or cools the optical device via the soaking unit.
摘要翻译：光学装置模块包括光学装置，固定在光学装置的一个表面上的均热单元，固定在均热单元的一个表面上的加热/冷却单元，固定在加热/冷却单元的一个表面上的绝热单元以及容纳光学器件，均热单元，加热/冷却单元和隔热单元并且绝热单元被固定到其上的封装。加热/冷却单元使用自发热加热光学装置，或通过均热单元冷却光学装置。

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