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公开(公告)号：US06931039B2
公开(公告)日：2005-08-16
申请号：US10412425
申请日：2003-04-14
申请人： Kouji Nakahara , Ryoji Takeyari
发明人： Kouji Nakahara , Ryoji Takeyari
CPC分类号： H01S5/041 , H01S5/026 , H01S5/042 , H01S5/0427 , H01S5/2224 , H01S5/2275
摘要： Optical transmitter equipment and a semiconductor laser device are provided. In one example, optical transmitter equipment includes a semiconductor laser driven by a direct-modulated method. The optical transmitter equipment comprises at least a semiconductor laser, the semiconductor laser having an active layer for laser oscillation and a clad region for optical confinement; an emission device capable of supplying optical energy to the active layer in the semiconductor laser; and a drive circuit for the semiconductor laser. The emission device is configured to supply optical energy corresponding to a bias current in the semiconductor laser to the active layer in the semiconductor laser.
摘要翻译： 提供光发射机设备和半导体激光器件。 在一个示例中，光发射机设备包括由直接调制方法驱动的半导体激光器。 所述光发射机设备至少包括半导体激光器，所述半导体激光器具有用于激光振荡的有源层和用于光学限制的包层区域; 能够向半导体激光器中的有源层提供光能的发射器件; 以及用于半导体激光器的驱动电路。 发射装置被配置为将与半导体激光器中的偏置电流相对应的光能量提供给半导体激光器中的有源层。
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公开(公告)号：US07127170B2
公开(公告)日：2006-10-24
申请号：US10623160
申请日：2003-07-21
申请人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
发明人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
CPC分类号： H04Q11/0062 , H04J14/02 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0039 , H04Q2011/0086
摘要： An optical frequency division multiplexing network includes first optical communication paths connected to terminals, respectively, a second optical communication path connected to the outside and a node composed of a selection unit for selecting signals having optical frequencies to be sent to the plurality of terminals, respectively, from signals transmitted through the second optical communication path in optical frequency division multiplexing, a conversion unit for converting the selected signals into signals having a single optical frequency and an output unit for producing the converted signals to the terminals through the first optical communication paths, respectively.
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公开(公告)号：US07099596B2
公开(公告)日：2006-08-29
申请号：US10319514
申请日：2002-12-16
申请人： Koichi Watanabe , Ryoji Takeyari , Masataka Shirai
发明人： Koichi Watanabe , Ryoji Takeyari , Masataka Shirai
IPC分类号： H04B10/04
CPC分类号： H04B10/504 , H04B10/505
摘要： A high-speed optical transmitter having an optical modulator and a driver circuit while maintaining optical modulator performance. The high-speed optical transmitter comprises the optical modulator which modulates and outputs an input light in accordance with an applied voltage, and a driver circuit which outputs the applied voltage into the optical modulator and has an emitter follower circuit at an output stage thereof.
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公开(公告)号：US06850713B2
公开(公告)日：2005-02-01
申请号：US10320527
申请日：2002-12-17
IPC分类号： G02F1/025 , H04B10/516 , H04B10/54 , H04B10/61 , H01S3/10 , G02B26/00 , G02F1/00 , H04B10/12
CPC分类号： H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50572 , H04B10/506 , H04B10/508 , H04B2210/258 , H04L7/0008
摘要： With the normal modulation method, it is difficult to construct a Hilbert transform device because it is complicated. To solve the problem, a single sideband modulated optical pulse train is generated by driving a Mach-Zehnder optical modulator for optical pulse generation with a laser source's sine wave clock signals that have been rendered 90 degrees out of phase from each other. The generated pulse train is applied to an optical modulator, modulated with an NRZ (nonreturn-to-zero) data signal, and filtered by a narrow-band optical filter to obtain one of two sidebands.
摘要翻译： 利用正常的调制方法，由于复杂而难以构造希尔伯特变换装置。 为了解决这个问题，通过用激光源的正弦波时钟信号驱动用于光脉冲生成的马赫 - 曾德尔光学调制器来产生单个边带调制的光脉冲串，这些信号彼此相差90度。 所产生的脉冲串被施加到用NRZ（非归零）数据信号调制的光调制器，并由窄带滤光器滤波以获得两个边带之一。
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公开(公告)号：US5801864A
公开(公告)日：1998-09-01
申请号：US608725
申请日：1996-02-29
申请人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
发明人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
CPC分类号： H04Q11/0062 , H04J14/02 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0039 , H04Q2011/0086
摘要： An optical frequency division multiplexing network includes first optical communication paths connected to terminals, respectively, a second optical communication path connected to the outside and a node composed of a selection unit for selecting signals having optical frequencies to be sent to the plurality of terminals, respectively, from signals transmitted through the second optical communication path in optical frequency division multiplexing, a conversion unit for converting the selected signals into signals having a single optical frequency and an output unit for producing the converted signals to the terminals through the first optical communication paths, respectively.
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公开(公告)号：US5510921A
公开(公告)日：1996-04-23
申请号：US233974
申请日：1994-04-28
申请人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
发明人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
CPC分类号： H04Q11/0062 , H04J14/02 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0039 , H04Q2011/0086
摘要： An optical frequency division multiplexing network includes first optical communication paths connected to terminals, respectively, a second optical communication path connected to the outside and a node composed of a selection unit for selecting signals having optical frequencies to be sent to the plurality of terminals, respectively, from signals transmitted through the second optical communication path in optical frequency division multiplexing, a conversion unit for converting the selected signals into signals having a single optical frequency and an output unit for producing the converted signals to the terminals through the first optical communication paths, respectively.
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公开(公告)号：US20050175351A1
公开(公告)日：2005-08-11
申请号：US10623160
申请日：2003-07-21
申请人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
发明人： Atsushi Takai , Ryoji Takeyari , Akihiko Takase
CPC分类号： H04Q11/0062 , H04J14/02 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0039 , H04Q2011/0086
摘要： An optical frequency division multiplexing network includes first optical communication paths connected to terminals, respectively, a second optical communication path connected to the outside and a node composed of a selection unit for selecting signals having optical frequencies to be sent to the plurality of terminals, respectively, from signals transmitted through the second optical communication path in optical frequency division multiplexing, a conversion unit for converting the selected signals into signals having a single optical frequency and an output unit for producing the converted signals to the temrinals through the first optical communication paths, respectively.
摘要翻译： 光分频复用网络包括分别连接到终端的第一光通信路径，连接到外部的第二光通信路径和由用于选择要发送到多个终端的光频信号的选择单元组成的节点 通过光分频多路复用通过第二光通信路径发送的信号，将所选择的信号转换为具有单个光频率的信号的转换单元和用于通过第一光通信路径产生转换信号到转换信号的输出单元， 分别。
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公开(公告)号：US6005699A
公开(公告)日：1999-12-21
申请号：US927277
申请日：1997-09-11
申请人： Keiji Tomooka , Naohiro Sakakida , Shin Nishimura , Yoshihiro Ashi , Hironari Matsuda , Satoshi Aoki , Yukio Nakano , Masahiro Takatori , Toru Kazawa , Shinya Sasaki , Ryoji Takeyari , Hiroyuki Nakano
发明人： Keiji Tomooka , Naohiro Sakakida , Shin Nishimura , Yoshihiro Ashi , Hironari Matsuda , Satoshi Aoki , Yukio Nakano , Masahiro Takatori , Toru Kazawa , Shinya Sasaki , Ryoji Takeyari , Hiroyuki Nakano
CPC分类号： H04J14/0295 , H04B10/2939 , H04J14/02 , H04J14/0241 , H04Q11/0062 , H04Q11/0478 , H04J14/0226 , H04J14/0227 , H04J14/0279 , H04J14/0283 , H04J14/0284 , H04J14/0286 , H04J14/0294 , H04J2203/0051 , H04Q2011/0069 , H04Q2011/0081 , H04Q2011/0083
摘要： An optical transmission system accomplishes optical transmission to a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission to a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-to-electric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, an with no use of any optical booster amplifier and optical preamplifier in the multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.
摘要翻译： 光传输系统通过将多路复用线路终端与光放大器，线性中继器和具有组合在一起的光放大器的再生器组合来实现长距离的光传输。 该系统还通过直接连接它们之间的线性端子来实现光传输到短距离，其中电光转换器由具有半导体放大器的电光转换器代替，其中光电转换器由 具有雪崩光电二极管作为光接收器的光电转换器，在复用线路终端中不使用任何光学增强放大器和光学前置放大器。 利用这些，可以根据所需的传输距离容易地构造光传输系统。
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公开(公告)号：US5844445A
公开(公告)日：1998-12-01
申请号：US736209
申请日：1996-10-25
申请人： Ryoji Takeyari
发明人： Ryoji Takeyari
IPC分类号： H03G3/10 , H03F1/34 , H03F3/08 , H03F3/343 , H03F3/45 , H03G1/00 , H04B1/18 , H03F1/32 , H03F17/00
摘要： A pre-amplifier disclosed in which low noise at the time of small input and linear amplification at the time of large input are compatible. In a pre-amplifier, such compatibility can be realized by constituting a current mirror circuit, with respect to a current of a first stage transistor in a transimpedance portion, by a by-passing transistor which is provided at an input side of the pre-amplifier. In such a configuration, by making a by-pass current flow proportionally to an input instantaneous current at the time of a large input, the transimpedance can be made small equivalently to thereby widen the dynamic range.
摘要翻译： 公开了一种前置放大器，其中在大输入时小输入和线性放大时的低噪声是兼容的。 在前置放大器中，这种兼容性可以通过构成相对于跨阻抗部分中的第一级晶体管的电流的电流镜电路来实现，该旁路晶体管设置在预放大器的输入侧， 放大器 在这种结构中，通过在大输入时与输入瞬时电流成比例地使旁路电流流动，可以将跨阻抗等同地变小，从而扩大动态范围。
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公开(公告)号：US5838475A
公开(公告)日：1998-11-17
申请号：US744762
申请日：1996-11-06
申请人： Ryoji Takeyari , Takashi Funada , Yukihiko Wakai , Kazuo Hagimoto
发明人： Ryoji Takeyari , Takashi Funada , Yukihiko Wakai , Kazuo Hagimoto
IPC分类号： H04B3/36 , H04B10/2507 , H04B10/2537 , H04B10/29 , H04B10/54 , H04B10/548 , H04B10/588 , H04L7/027 , H04L25/52 , H04B10/16
CPC分类号： H04B10/299 , H04B10/2537 , H04B10/29 , H04L7/027
摘要： A a first clock extraction device included in the receiving section of the optical regenerator recovers a receiving clock. The receiving clock follows the jitter contained in a receiving optical signal caused by fiber wavelength dispersion. The receiving optical signal is detected in synchrony with the receiving clock. A transmission section includes a transmitter for generating a transmission optical signal changed in phase in such a manner as to suppress the stimulated Brillouin scattering and a second clock extraction device for regenerating the transmission clock not following the jitter. The data of the receiving optical signal is processed at a processing unit, and intensity-modulated on the basis of the data thus processed. The timing of this modulation is synchronized with the transmission clock. The receiving clock is synchronized with the jitter, and therefore no logic error occurs. Since the transmission clock does not follow the jitter, the jitter is prevented from accumulating.
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