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1. 发明公开

EP2001148A1 Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them 有权
标题翻译： OptischeÜbertragungsvorrichtung
公开(公告)号：EP2001148A1
公开(公告)日：2008-12-10
申请号：EP08158857.6
申请日：2005-12-29
申请人： Fujitsu Limited
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/155 , H04B10/158
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20). A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3). 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.
摘要翻译：相移单元（12）在经由构成数据调制单元（20）的一对臂发送的一对光信号之间提供规定的相位差（例如，±2）。低频信号f 0叠加在一个光信号上。相位偏离低频信号f 0的信号被叠加在另一个光信号上。一对光信号被耦合，其一部分由光电二极管（3）转换成电信号。提取包含在电信号中的2f 0分量。通过反馈控制来控制提供给相移单元（12）的偏压，使得2f 0分量成为最小。

2. 发明授权

EP0902560B1 Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level 失效
标题翻译：用于根据所述光信号的功率电平在光纤链路优化色散的方法和装置
公开(公告)号：EP0902560B1
公开(公告)日：2006-03-22
申请号：EP98108436.1
申请日：1998-05-08
申请人： FUJITSU LIMITED
发明人： Ishikawa, George , Ooi, Hiroki , Kuwata, Naoki
IPC分类号： H04B10/18
CPC分类号： H04B10/2519 , H04B2210/252

3. 发明授权

EP2110972B1 Optical transmitting apparatus 有权
标题翻译：的光传输装置
公开(公告)号：EP2110972B1
公开(公告)日：2013-11-20
申请号：EP08158852.7
申请日：2005-12-29
申请人： Fujitsu Limited
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/50 , H04B10/516 , H04B10/556 , H04B10/66 , H04B10/67
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (À/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20) . A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by À/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3) . 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.

4. 发明授权

EP2001148B1 Optical transmitting apparatus 有权
公开(公告)号：EP2001148B1
公开(公告)日：2013-11-06
申请号：EP08158857.6
申请日：2005-12-29
申请人： Fujitsu Limited
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/50 , H04B10/516 , H04B10/556 , H04B10/66 , H04B10/67
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677

5. 发明公开

EP2110972A1 Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them 有权
标题翻译：的光传输装置
公开(公告)号：EP2110972A1
公开(公告)日：2009-10-21
申请号：EP08158852.7
申请日：2005-12-29
申请人： Fujitsu Limited
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/155
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20). A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3). 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.

6. 发明授权

EP0915565B1 Filter circuit 失效
标题翻译：滤波电路
公开(公告)号：EP0915565B1
公开(公告)日：2003-09-24
申请号：EP98120133.8
申请日：1994-07-26
申请人： FUJITSU LIMITED
发明人： Yamamoto, Takuji , Kuwata, Naoki
IPC分类号： H03H11/04
CPC分类号： H03F3/4521 , H03F3/45071 , H03F3/45089 , H03F2203/45018 , H03F2203/45022 , H03F2203/45024 , H03F2203/45034 , H03H11/04 , H03H11/1291

7. 发明公开

EP0902560A2 Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level 失效
标题翻译：用于根据所述光信号的功率电平在光纤链路优化色散的方法和装置
公开(公告)号：EP0902560A2
公开(公告)日：1999-03-17
申请号：EP98108436.1
申请日：1998-05-08
申请人： FUJITSU LIMITED
发明人： Ishikawa, George , Ooi, Hiroki , Kuwata, Naoki
IPC分类号： H04B10/18
CPC分类号： H04B10/2519 , H04B2210/252
摘要： A method and apparatus for optimizing dispersion in an optical fiber transmission line. The method and apparatus (a) determine an optimum amount of total dispersion of an optical transmission line corresponding to a power level of an optical signal transmitted through the optical transmission line; (b) control dispersion of the optical transmission line so that the total dispersion up to a specific point along the optical transmission line becomes approximately zero; and (c) add dispersion to the optical transmission line downstream of the specific point, to obtain the determined optimum amount of total dispersion. The control of dispersion in (b), above, can be performed in several different manners. For example, the control of dispersion can include (i) detecting the intensity of a specific frequency component of the optical signal, the optical signal having an intensity v. total dispersion characteristic curve with at least two peaks; and (ii) controlling the amount of total dispersion of the transmission line to substantially minimize the intensity of the specific frequency component between the two highest peaks of the intensity v. total dispersion characteristic curve of the optical signal. Assuming that the optical signal is modulated by a data signal having a bit rate of B bits/second, then the specific frequency component is preferably a B hertz component of the optical signal.
摘要翻译：一种用于在优化光纤传输线中的色散的方法和装置。在一个光传输线对应于光信号的反式的功率电平的总色散最佳量的方法和装置（a）中确定的矿通过光传输线mitted; （B）的光传输线的色散控制所以没有总色散沿光传输线中的特定点变为大约零; 和（c）添加色散到特定点的下游光传输线，以获得总色散确定性开采最佳量。分散的（b）中的控制，上述方法，可以以几种不同的方式来执行。例如，分散体的控制可以包括：（i）检测光信号中特定频率分量的强度，其在强度对光信号。总色散具有至少两个峰的特性曲线; 和（ii）控制传输线的总色散量，基本上最小化的强度V的两个最高峰之间特定频率分量的强度。的光信号的总色散特征曲线。假设没有光信号通过具有B比特的比特率的数据信号调制/秒，则特定频率分量最好是光信号的B赫兹分量。

8. 发明授权

EP2003797B1 Optical transmitting apparatus 有权
标题翻译：光发射装置
公开(公告)号：EP2003797B1
公开(公告)日：2013-11-13
申请号：EP08158854.3
申请日：2005-12-29
申请人： Fujitsu Limited
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/50 , H04B10/516 , H04B10/556 , H04B10/66 , H04B10/67
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677

9. 发明公开

EP2114025A1 Optical receiving apparatus and optical communication system comprising it 有权
标题翻译： Optische Empfangsvorrichtung und optisches Kommunikationssystem damit
公开(公告)号：EP2114025A1
公开(公告)日：2009-11-04
申请号：EP09168464.7
申请日：2005-12-29
申请人： FUJITSU LIMITED
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/158
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20) . A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3). 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.
摘要翻译：相移单元（12）提供经由构成数据调制单元（20）的一对臂发送的一对光信号之间的规定相位差（例如，2）。低频信号f 0叠加在一个光信号上。相位偏离低频信号f 0的信号被叠加在另一个光信号上。一对光信号被耦合，其一部分由光电二极管（3）转换成电信号。提取包含在电信号中的2f 0分量。通过反馈控制来控制提供给相移单元（12）的偏压，使得2f 0分量成为最小。

10. 发明公开

EP1727303A2 Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them 有权
标题翻译： Optische Sendervorrichtung，optische Empfangsvorrichtung und diese enthaltendes Kommunikationssystem
公开(公告)号：EP1727303A2
公开(公告)日：2006-11-29
申请号：EP05028634.3
申请日：2005-12-29
申请人： FUJITSU LIMITED
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/155
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20) . A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3) . 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.
摘要翻译：相移单元（12）在经由构成数据调制单元（20）的一对臂发送的一对光信号之间提供规定的相位差（例如，±2）。低频信号f 0叠加在一个光信号上。相位偏离低频信号f 0的信号被叠加在另一个光信号上。一对光信号被耦合，其一部分由光电二极管（3）转换成电信号。提取包含在电信号中的2f 0分量。通过反馈控制来控制提供给相移单元（12）的偏压，使得2f 0分量成为最小。

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