公开(公告)号：US4803384A

公开(公告)日：1989-02-07

申请号：US921110

申请日：1986-10-21

申请人： Kazuo Yamane ,  Masakazu Mori ,  Takashi Tsuda ,  Yoshinori Ohkuma ,  Kazuhiro Suzuki

发明人： Kazuo Yamane ,  Masakazu Mori ,  Takashi Tsuda ,  Yoshinori Ohkuma ,  Kazuhiro Suzuki

IPC分类号： H01S5/042 ,  H01S5/062 ,  H01S5/0683 ,  H03K5/02 ,  H03K5/08 ,  G06G7/12 ,  H01S3/00 ,  H03L5/00

CPC分类号： H01S5/06216 ,  H01S5/06835 ,  H03K5/023 ,  H03K5/086 ,  H01S5/0428

摘要： A semiconductor laser driving device using FET's as a positive element in a bias current supply circuit and a pulse current supply circuit, and having compensating circuits for compensating differences in the characteristics of the FET's and a laser diode used in the driving device. Also a pulse amplifier suitable for use as the pulse current supply circuit in the semiconductor driving device, which circuit cuts off a pulse top side portion and a pulse base side portion of an input pulse with respect to a mesial point of the input pulse to obtain an output pulse having a desired pulse amplitude in response to a control signal, without varying a pulse width.

公开(公告)号：US4813048A

公开(公告)日：1989-03-14

申请号：US197214

申请日：1988-05-23

申请人： Kazuo Yamane ,  Masakazu Mori ,  Takashi Tsuda ,  Yoshinori Ohkuma ,  Kazuhiro Suzuki

发明人： Kazuo Yamane ,  Masakazu Mori ,  Takashi Tsuda ,  Yoshinori Ohkuma ,  Kazuhiro Suzuki

IPC分类号： H01S5/042 ,  H01S5/062 ,  H01S5/0683 ,  H03K5/02 ,  H03K5/08 ,  H01S3/00

CPC分类号： H01S5/06216 ,  H01S5/06835 ,  H03K5/023 ,  H03K5/086 ,  H01S5/0428

摘要： A semiconductor laser driving device using FET's as a positive element in a bias current supply circuit and a pulse current supply circuit, and having compensating circuits for compensating differences in the characteristics of the FET's and a laser diode used in the driving device. Also a pulse amplifier suitable for use as the pulse current supply circuit in the semiconductor driving device, which circuit cuts off a pulse top side portion and a pulse base side portion of an input pulse with respect to a mesial point of the input pulse to obtain an output pulse having a desired pulse amplitude in response to a control signal, without varying a pulse width.

公开(公告)号：US5680246A

公开(公告)日：1997-10-21

申请号：US412290

申请日：1995-03-28

申请人： Tsukasa Takahashi ,  Hiroyuki Itou ,  Yuji Tamura ,  Michikazu Shima ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Keisuke Imai ,  Yoshinori Ohkuma ,  Kazuhiro Suzuki ,  Yasunori Nagakubo ,  Takashi Tsuda ,  Yuji Miyaki

发明人： Tsukasa Takahashi ,  Hiroyuki Itou ,  Yuji Tamura ,  Michikazu Shima ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Keisuke Imai ,  Yoshinori Ohkuma ,  Kazuhiro Suzuki ,  Yasunori Nagakubo ,  Takashi Tsuda ,  Yuji Miyaki

IPC分类号： H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/13 ,  H01S3/131 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/29 ,  H04B10/293 ,  H04B10/564 ,  H04B10/572 ,  H01S3/00

CPC分类号： H04B10/564 ,  H01S3/1301 ,  H04B10/077 ,  H04B10/07955 ,  H04B10/2912 ,  H04B10/2931 ,  H01S3/06754

摘要： The optical amplifier includes a doped fiber doped with a rare earth element, a pumping light source, means for introducing signal light and pumping light into the doped fiber, detection means for detecting whether or not amplified signal light is included in light outputted from the doped fiber, and means for decreasing the intensity of the pumping light when it is detected that amplified signal light is not included. It can be possible to eliminate an influence of an optical surge arising from a characteristic of the doped fiber.

摘要翻译： 光放大器包括掺杂有稀土元素的掺杂光纤，泵浦光源，用于将信号光和泵浦光引入掺杂光纤的装置，用于检测放大信号光是否包含在从掺杂光 光纤，以及当检测到不包括放大信号光时降低泵浦光强度的装置。 可以消除由掺杂光纤的特性引起的光学浪涌的影响。

公开(公告)号：US4765735A

公开(公告)日：1988-08-23

申请号：US21717

申请日：1987-03-04

申请人： Masakazu Mori ,  Takashi Tsuda ,  Kazuo Yamane

发明人： Masakazu Mori ,  Takashi Tsuda ,  Kazuo Yamane

IPC分类号： H04B10/00 ,  H01S5/00 ,  H01S5/042 ,  H04B10/07 ,  H04B10/2513 ,  G01J1/00

CPC分类号： H01S5/0014

摘要： An apparatus and a method for measuring a mode partition characteristics of laser diode with so-called a k-value (k factor), in which the PN (Pseudo Noise) pulse pattern is used for modulation of laser diode to be measured on the occasion of measuring various parameters required for calculation of the k value.

摘要翻译： 一种用于测量具有所谓k值（k因子）的激光二极管的模式分区特性的装置和方法，其中PN（伪噪声）脉冲模式用于当前测量的激光二极管的调制 测量k值计算所需的各种参数。

公开(公告)号：US07006769B1

公开(公告)日：2006-02-28

申请号：US09256079

申请日：1999-02-24

申请人： Yumiko Kawasaki ,  Kazuo Yamane ,  Takashi Tsuda ,  Satoru Okano

发明人： Yumiko Kawasaki ,  Kazuo Yamane ,  Takashi Tsuda ,  Satoru Okano

IPC分类号： H04B10/00 ,  H04B10/12

CPC分类号： H04B10/2525 ,  G02F1/0121 ,  G02F1/0123 ,  G02F2203/25 ,  H04B10/0775 ,  H04B10/07953 ,  H04B10/0799 ,  H04B2210/077 ,  H04B2210/252 ,  H04B2210/254

摘要： The invention, relates to a method for optical fiber communication. An optical signal having chirping determined by a chirp parameter is output to an optical fiber transmission line. The optical signal transmitted by the optical fiber transmission line is converted into an electrical signal. A bit error of the electrical signal is detected. Then, the chirp parameter is controlled so that the bit error detected above is reduced. According to this method, the chirp parameter is controlled so that the bit error detected is reduced. Accordingly, a chirping occurring in the optical fiber transmission line can be suppressed by the chirping of the optical signal to be output to the optical fiber transmission line, thereby compensating for chromatic dispersion and nonlinearity.

摘要翻译： 本发明涉及一种光纤通信方法。 将具有由啁啾参数确定的啁啾的光信号输出到光纤传输线。 由光纤传输线传输的光信号被转换为电信号。 检测到电信号的位错误。 然后，控制啁啾参数，使得上面检测到的位错误减少。 根据该方法，控制啁啾参数，使得检测到的位错误减少。 因此，可以通过对输出到光纤传输线的光信号的线性调频来抑制在光纤传输线中发生的线性调频，从而补偿色散和非线性。

公开(公告)号：US07079771B2

公开(公告)日：2006-07-18

申请号：US10272995

申请日：2002-10-18

申请人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04J14/02 ,  H04B10/04 ,  H01S3/00

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572

摘要： The invention provides a wavelength multiplexing transmission apparatus includes a plurality of optical signal outputting sections for outputting optical signals having different wavelengths from each other, and a wavelength multiplexing section for wavelength multiplexing the optical signals outputted from the optical signal outputting sections and sending out a resulting optical signal. Each of the optical signal outputting sections includes a transmission light source driven by an electric signal for outputting an optical signal of a predetermined wavelength, and a wavelength filter capable of passing therethrough and sending out only an optical signal of the predetermined wavelength to be outputted from the transmission light source to prevent a wavelength drift of the optical signal outputted from the transmission light source. A variation of the wavelength of the transmission light source is detected, and the transmission light source is shut down in order to prevent otherwise possible crosstalk with another channel and prevent a further influence of the same.

公开(公告)号：US06744958B2

公开(公告)日：2004-06-01

申请号：US09753573

申请日：2001-01-04

申请人： Shinya Inagaki ,  Hisashi Takamatsu ,  Kazuo Yamane ,  Takashi Tsuda

发明人： Shinya Inagaki ,  Hisashi Takamatsu ,  Kazuo Yamane ,  Takashi Tsuda

IPC分类号： G02B602

CPC分类号： G02B6/29377 ,  G02B6/29358 ,  G02B6/29374 ,  G02B6/29394 ,  G02B6/4215 ,  H04B10/25133

摘要： Both wavelength dispersion and a dispersion slope of a line fiber are simultaneously compensated for by combining two types of dispersion compensators having different characteristics.

摘要翻译： 通过组合具有不同特性的两种类型的色散补偿器来同时补偿线光纤的波长色散和色散斜率。

公开(公告)号：US06295147B1

公开(公告)日：2001-09-25

申请号：US09115914

申请日：1998-07-15

申请人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04J1402

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572

摘要： The invention provides a wavelength multiplexing transmission apparatus includes a plurality of optical signal outputting sections for outputting optical signals having different wavelengths from each other, and a wavelength multiplexing section for wavelength multiplexing the optical signals outputted from the optical signal outputting sections and sending out a resulting optical signal. Each of the optical signal outputting sections includes a transmission light source driven by an electric signal for outputting an optical signal of a predetermined wavelength, and a wavelength filter capable of passing therethrough and sending out only an optical signal of the predetermined wavelength to be outputted from the transmission light source to prevent a wavelength drift of the optical signal outputted from the transmission light source. A variation of the wavelength of the transmission light source is detected, and the transmission light source is shut down in order to prevent otherwise possible crosstalk with another channel and prevent a further influence of the same.

摘要翻译： 本发明提供了一种波长复用传输装置，包括：多个光信号输出部分，用于输出具有不同波长的光信号;以及波长多路复用部分，用于对从光信号输出部分输出的光信号进行波长多路复用， 光信号。 每个光信号输出部分包括由用于输出预定波长的光信号的电信号驱动的透射光源和能够通过其的波长滤光器，并且仅发出预定波长的光信号以从 传输光源，以防止从传输光源输出的光信号的波长漂移。 检测发送光源的波长的变化，并且关闭发送光源，以防止与另一个信道的可能的串扰，并防止其进一步的影响。

公开(公告)号：US06288836B1

公开(公告)日：2001-09-11

申请号：US09040323

申请日：1998-03-18

申请人： Yumiko Kawasaki ,  Satoru Okano ,  Kazuo Yamane ,  Hiroshi Nishimoto ,  Takashi Tsuda

发明人： Yumiko Kawasaki ,  Satoru Okano ,  Kazuo Yamane ,  Hiroshi Nishimoto ,  Takashi Tsuda

IPC分类号： G01J328

CPC分类号： H04B10/2935 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1301 ,  H04B10/2912 ,  H04B10/2942

摘要： The present invention relates to an optical amplifier and an optical communication system applied to WDM (wavelength division multiplexing). The optical amplifier includes an optical amplifying medium to which WDM signal light obtained by wavelength division multiplexing a plurality of optical signals having different wavelengths is supplied, a pumping unit for pumping the optical amplifying medium such that the medium gives a gain to the WDM signal light, a feedback loop for controlling the pumping unit so that the gain is maintained constant, and an optical attenuator for giving a variable attenuation to the WDM signal light. Through the structure of the present invention, it becomes possible to provide an optical amplifier which can maintain constant the optical output level per channel of WDM and can maintain the gain characteristic constant.

摘要翻译： 本发明涉及一种应用于WDM（波分复用）​​的光放大器和光通信系统。 该光放大器包括一个光放大介质，通过波分多路复用多个具有不同波长的光信号获得的WDM信号光，一个泵浦单元，用于泵浦光放大介质，使得介质给予WDM信号光增益 ，用于控制泵送单元以使增益保持恒定的反馈回路，以及用于向WDM信号光提供可变衰减的光衰减器。 通过本发明的结构，可以提供一种能够维持WDM每通道的光输出电平恒定并且可以保持增益特性恒定的光放大器。

公开(公告)号：US06496288B2

公开(公告)日：2002-12-17

申请号：US09922777

申请日：2001-08-07

申请人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04J1400

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572

摘要： The invention provides a wavelength multiplexing transmission apparatus includes a plurality of optical signal outputting sections for outputting optical signals having different wavelengths from each other, and a wavelength multiplexing section for wavelength multiplexing the optical signals outputted from the optical signal outputting sections and sending out a resulting optical signal. Each of the optical signal outputting sections includes a transmission light source driven by an electric signal for outputting an optical signal of a predetermined wavelength, and a wavelength filter capable of passing therethrough and sending out only an optical signal of the predetermined wavelength to be outputted from the transmission light source to prevent a wavelength drift of the optical signal outputted from the transmission light source. A variation of the wavelength of the transmission light source is detected, and the transmission light source is shut down in order to prevent otherwise possible crosstalk with another channel and prevent a further influence of the same.

摘要翻译： 本发明提供了一种波长复用传输装置，包括：多个光信号输出部分，用于输出具有不同波长的光信号;以及波长多路复用部分，用于对从光信号输出部分输出的光信号进行波长多路复用， 光信号。 每个光信号输出部分包括由用于输出预定波长的光信号的电信号驱动的透射光源和能够通过其的波长滤波器，并且仅发送预定波长的光信号以从 传输光源，以防止从传输光源输出的光信号的波长漂移。 检测发送光源的波长的变化，并且关闭发送光源，以防止与另一个信道的可能的串扰，并防止其进一步的影响。