公开(公告)号：US08116627B2

公开(公告)日：2012-02-14

申请号：US12222224

申请日：2008-08-05

申请人： Hiroki Ikeda ,  Toshiki Sugawara ,  Yusuke Yajima

发明人： Hiroki Ikeda ,  Toshiki Sugawara ,  Yusuke Yajima

IPC分类号： H04B10/20

CPC分类号： H04B10/272 ,  H04B10/27

摘要： When a signal of weak optical power is received immediately after a signal of intense optical power, input of the signal of intense optical power readily causes saturation, and the influence interferes in the signal of weak optical power to deteriorate receiver sensitivity. Moreover, when a reverse-bias voltage of APD is changed, if a difference between the voltages is large, a next optical signal is received until the receiver sensitivity of the APD becomes stable, so that receiver sensitivity deteriorates. A DBA order is determined so that a difference in reverse-bias voltage is small, and reverse-bias voltage is controlled in line with reception timing from ONU.

摘要翻译： 当在强光信号之后立即接收到弱光功率的信号时，强光信号信号的输入容易引起饱和，并且影响会干扰弱光功率的信号，从而降低接收机灵敏度。 此外，当APD的反向偏置电压发生变化时，如果电压差大，则接收下一个光信号，直到APD的接收灵敏度变得稳定为止，接收灵敏度变差。 确定DBA顺序，使得反向偏置电压的差小，并且根据ONU的接收定时来控制反向偏置电压。

公开(公告)号：US20090169209A1

公开(公告)日：2009-07-02

申请号：US12073949

申请日：2008-03-12

申请人： Toshiki Sugawara ,  Hiroki Ikeda ,  Yusuke Yajima ,  Tohru Kazawa

发明人： Toshiki Sugawara ,  Hiroki Ikeda ,  Yusuke Yajima ,  Tohru Kazawa

IPC分类号： H04J14/00

CPC分类号： H04B10/27 ,  H04B10/272 ,  H04J3/0682

摘要： A general object of the present invention is to provide an optical communication system in which an optical transmission power of an optical communication apparatus is controlled to be a required minimum power that apparatuses of all subscribers in the optical communication system meet a prescribed error rate. An optical line terminating apparatus (OLT) transmits data to multiple optical network apparatuses (ONUs) at an optical intensity calculated based on information acquired from the multiple ONUs, which is related to optical intensities of signals that the multiple ONUs receive from the OLT, the optical intensity being calculated so that a minimum optical intensity of the optical intensities of the signals is greater than a predetermined value.

摘要翻译： 本发明的一般目的是提供一种光通信系统，其中光通信装置的光传输功率被控制为光通信系统中所有用户的设备满足规定的错误率所需的最小功率。 光线路终端装置（OLT）以基于从多个ONU获取的信息计算出的光强度向多个光网络装置（ONU）发送数据，其与多个ONU从OLT接收的信号的光强度相关， 计算光强度，使得信号的光强度的最小光强度大于预定值。

公开(公告)号：US20090162053A1

公开(公告)日：2009-06-25

申请号：US12222224

申请日：2008-08-05

申请人： Hiroki Ikeda ,  Toshiki Sugawara ,  Yusuke Yajima

发明人： Hiroki Ikeda ,  Toshiki Sugawara ,  Yusuke Yajima

IPC分类号： H04B10/08

CPC分类号： H04B10/272 ,  H04B10/27

摘要： When a signal of weak optical power is received immediately after a signal of intense optical power, input of the signal of intense optical power readily causes saturation, and the influence interferes in the signal of weak optical power to deteriorate receiver sensitivity. Moreover, when a reverse-bias voltage of APD is changed, if a difference between the voltages is large, a next optical signal is received until the receiver sensitivity of the APD becomes stable, so that receiver sensitivity deteriorates. A DBA order is determined so that a difference in reverse-bias voltage is small, and reverse-bias voltage is controlled in line with reception timing from ONU.

摘要翻译： 当在强光信号之后立即接收到弱光功率的信号时，强光信号信号的输入容易引起饱和，并且影响会干扰弱光功率的信号，从而降低接收机灵敏度。 此外，当APD的反向偏置电压发生变化时，如果电压差大，则接收下一个光信号，直到APD的接收灵敏度变得稳定为止，接收灵敏度变差。 确定DBA顺序，使得反向偏置电压的差小，并且根据ONU的接收定时来控制反向偏置电压。

公开(公告)号：US08090261B2

公开(公告)日：2012-01-03

申请号：US12073949

申请日：2008-03-12

申请人： Toshiki Sugawara ,  Hiroki Ikeda ,  Yusuke Yajima ,  Tohru Kazawa

发明人： Toshiki Sugawara ,  Hiroki Ikeda ,  Yusuke Yajima ,  Tohru Kazawa

IPC分类号： H04J14/00

CPC分类号： H04B10/27 ,  H04B10/272 ,  H04J3/0682

摘要： A general object of the present invention is to provide an optical communication system in which an optical transmission power of an optical communication apparatus is controlled to be a required minimum power that apparatuses of all subscribers in the optical communication system meet a prescribed error rate. An optical line terminating apparatus (OLT) transmits data to multiple optical network apparatuses (ONUs) at an optical intensity calculated based on information acquired from the multiple ONUs, which is related to optical intensities of signals that the multiple ONUs receive from the OLT, the optical intensity being calculated so that a minimum optical intensity of the optical intensities of the signals is greater than a predetermined value.

摘要翻译： 本发明的一般目的是提供一种光通信系统，其中光通信装置的光传输功率被控制为光通信系统中所有用户的设备满足规定的错误率所需的最小功率。 光线路终端装置（OLT）以基于从多个ONU获取的信息计算出的光强度向多个光网络装置（ONU）发送数据，其与多个ONU从OLT接收的信号的光强度相关， 计算光强度，使得信号的光强度的最小光强度大于预定值。

公开(公告)号：US07936991B2

公开(公告)日：2011-05-03

申请号：US12068829

申请日：2008-02-12

申请人： Toshiki Sugawara ,  Masahiko Mizutani ,  Hiroki Ikeda ,  Kenichi Sakamoto

发明人： Toshiki Sugawara ,  Masahiko Mizutani ,  Hiroki Ikeda ,  Kenichi Sakamoto

IPC分类号： H04B10/20 ,  H04J14/00

CPC分类号： H04L7/0075 ,  H04J3/1694

摘要： An optical access communication apparatus and an optical access communication system for the coexistence of two wideband PON systems without using an expensive optical device or module. A low-speed PON and a high-speed PON have a same upstream wavelength, and an OLT receives optical signals by a same optical receiver in the two systems, converts the optical signals into electric signals, amplifies the electric signals, branches the amplified electric signals, and processes the branched signals by clock and data recovery sections of bit rates corresponding to the two PON systems, thereby achieving an optical communication apparatus and an optical communication system for constructing a simple and low-cost triple-play service system of excellent transmission quality.

摘要翻译： 一种用于两个宽带PON系统共存而不使用昂贵的光学设备或模块的光接入通信设备和光接入通信系统。 低速PON和高速PON具有相同的上行波长，并且OLT在两个系统中通过相同的光接收器接收光信号，将光信号转换为电信号，放大电信号，将放大的电 信号，并通过对应于两个PON系统的比特率的时钟和数据恢复部分对分支信号进行处理，从而实现用于构建出色传输的简单且低成本的三重播放业务系统的光通信装置和光通信系统 质量。

公开(公告)号：US20090080888A1

公开(公告)日：2009-03-26

申请号：US12068829

申请日：2008-02-12

申请人： Toshiki Sugawara ,  Masahiko Mizutani ,  Hiroki Ikeda ,  Kenichi Sakamoto

发明人： Toshiki Sugawara ,  Masahiko Mizutani ,  Hiroki Ikeda ,  Kenichi Sakamoto

IPC分类号： H04B10/20 ,  H04J14/00

CPC分类号： H04L7/0075 ,  H04J3/1694

摘要： An optical access communication apparatus and an optical access communication system for the coexistence of two wideband PON systems without using an expensive optical device or module. A low-speed PON and a high-speed PON have a same upstream wavelength, and an OLT receives optical signals by a same optical receiver in the two systems, converts the optical signals into electric signals, amplifies the electric signals, branches the amplified electric signals, and processes the branched signals by clock and data recovery sections of bit rates corresponding to the two PON systems, thereby achieving an optical communication apparatus and an optical communication system for constructing a simple and low-cost triple-play service system of excellent transmission quality.

摘要翻译： 一种用于两个宽带PON系统共存而不使用昂贵的光学设备或模块的光接入通信设备和光接入通信系统。 低速PON和高速PON具有相同的上行波长，并且OLT在两个系统中通过相同的光接收器接收光信号，将光信号转换为电信号，放大电信号，将放大的电 信号，并通过对应于两个PON系统的比特率的时钟和数据恢复部分对分支信号进行处理，从而实现用于构建出色传输的简单且低成本的三重播放业务系统的光通信装置和光通信系统 质量。

公开(公告)号：US20090162065A1

公开(公告)日：2009-06-25

申请号：US12337793

申请日：2008-12-18

申请人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

发明人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04J3/0655 ,  H04J3/0682 ,  H04L7/0008 ,  H04Q2011/0064 ,  H04Q2011/0079

摘要： It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized with high accuracy between plural systems. A reference clock is provided from an external device or a representative OLT to the entire systems to perform clock synchronization between plural systems, so that the overall systems are synchronized by synchronizing each OLT with the reference clock. A hierarchical management method is selected that manages ONUs under the control of each OLT by managing band use information arranged for each OLT with respect to an external device or a representative OLT for sharing of bandwidth use conditions between plural systems.

摘要翻译： 为了使PON共存，必须完全消除多个PON之间的信号重叠。 因此，需要在用作多个系统之间的公共频带的光纤上共享或集中管理带宽使用条件。 因此，传输时钟应该在多个系统之间以高精度同步。 从外部设备或代表性OLT向整个系统提供参考时钟以在多个系统之间执行时钟同步，使得通过使每个OLT与参考时钟同步来使整个系统同步。 选择分级管理方法，通过管理针对每个OLT针对外部设备或代表性的OLT布置的用于共享多个系统之间的带宽使用条件的代表性OLT来管理在每个OLT的控制下的ONU。

公开(公告)号：US20090162063A1

公开(公告)日：2009-06-25

申请号：US12337790

申请日：2008-12-18

申请人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

发明人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

IPC分类号： H04B10/20

CPC分类号： H04J3/0682 ,  H04J3/1694

摘要： It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized with high accuracy between plural systems. A reference clock is provided from an external device or a representative OLT to the entire systems to perform clock synchronization between plural systems, so that the overall systems are synchronized by synchronizing each OLT with the reference clock. A hierarchical management method is selected that manages ONUs under the control of each OLT by managing band use information arranged for each OLT with respect to an external device or a representative OLT for sharing of bandwidth use conditions between plural systems.

摘要翻译： 为了使PON共存，必须完全消除多个PON之间的信号重叠。 因此，需要在用作多个系统之间的公共频带的光纤上共享或集中管理带宽使用条件。 因此，传输时钟应该在多个系统之间以高精度同步。 从外部设备或代表性OLT向整个系统提供参考时钟以在多个系统之间执行时钟同步，使得通过使每个OLT与参考时钟同步来使整个系统同步。 选择分级管理方法，通过管理针对每个OLT针对外部设备或代表性的OLT布置的用于共享多个系统之间的带宽使用条件的代表性OLT来管理在每个OLT的控制下的ONU。

公开(公告)号：US08488965B2

公开(公告)日：2013-07-16

申请号：US12337783

申请日：2008-12-18

申请人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

发明人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

IPC分类号： H04J14/00 ,  H04J14/08

CPC分类号： H04J14/0282 ,  H04J3/0682 ,  H04J3/0685 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0254 ,  H04J14/0256 ,  H04J14/0267 ,  H04J14/0269 ,  H04Q11/0067

摘要： It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized with high accuracy between plural systems. A reference clock is provided from an external device or a representative OLT to the entire systems to perform clock synchronization between plural systems, so that the overall systems are synchronized by synchronizing each OLT with the reference clock. A hierarchical management method is selected that manages ONUs under the control of each OLT by managing band use information arranged for each OLT with respect to an external device or a representative OLT for sharing of bandwidth use conditions between plural systems.

摘要翻译： 为了使PON共存，必须完全消除多个PON之间的信号重叠。 因此，需要在用作多个系统之间的公共频带的光纤上共享或集中管理带宽使用条件。 因此，传输时钟应该在多个系统之间以高精度同步。 从外部设备或代表性OLT向整个系统提供参考时钟以在多个系统之间执行时钟同步，使得通过使每个OLT与参考时钟同步来使整个系统同步。 选择分级管理方法，通过管理针对每个OLT针对外部设备或代表性的OLT布置的用于共享多个系统之间的带宽使用条件的代表性OLT来管理在每个OLT的控制下的ONU。

公开(公告)号：US08457495B2

公开(公告)日：2013-06-04

申请号：US12337790

申请日：2008-12-18

申请人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

发明人： Masahiko Mizutani ,  Toshiki Sugawara ,  Hiroki Ikeda

IPC分类号： H04J14/00

CPC分类号： H04J3/0682 ,  H04J3/1694

摘要： It is necessary to completely remove overlapping of signals between plural PONs in order to make the PONs coexist. Accordingly, it is required to share or intensively manage bandwidth use conditions over an optical fiber that serves as a common band between plural systems. Therefore, transmission clocks should be synchronized with high accuracy between plural systems. A reference clock is provided from an external device or a representative OLT to the entire systems to perform clock synchronization between plural systems, so that the overall systems are synchronized by synchronizing each OLT with the reference clock. A hierarchical management method is selected that manages ONUs under the control of each OLT by managing band use information arranged for each OLT with respect to an external device or a representative OLT for sharing of bandwidth use conditions between plural systems.

摘要翻译： 为了使PON共存，必须完全消除多个PON之间的信号重叠。 因此，需要在用作多个系统之间的公共频带的光纤上共享或集中管理带宽使用条件。 因此，传输时钟应该在多个系统之间以高精度同步。 从外部设备或代表性OLT向整个系统提供参考时钟以在多个系统之间执行时钟同步，使得通过使每个OLT与参考时钟同步来使整个系统同步。 选择分级管理方法，通过管理针对每个OLT针对外部设备或代表性的OLT布置的用于共享多个系统之间的带宽使用条件的代表性OLT来管理在每个OLT的控制下的ONU。