公开(公告)号：US20080199189A1

公开(公告)日：2008-08-21

申请号：US11676519

申请日：2007-02-20

申请人： Lei XU ,  Philip Nan JI ,  Jianjun YU ,  Milorad CVIJETIC ,  Yutaka YANO ,  Tsutomu TAJIMA ,  Shinya NAKAMURA ,  Ting Wang

发明人： Lei XU ,  Philip Nan JI ,  Jianjun YU ,  Milorad CVIJETIC ,  Yutaka YANO ,  Tsutomu TAJIMA ,  Shinya NAKAMURA ,  Ting Wang

IPC分类号： H04J14/00

CPC分类号： H04B10/677 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213

摘要： A colorless optical DQPSK demodulator and system operating over multiple, equally-spaced DWDM channels with fixed optical delays—capable of demodulating DQPSK within signals within DWDM communications wave bands on ITU grids using delay interferometers having fixed free spectral range at 20 GHz or 25 GHz.

摘要翻译： 一种无色的光学DQPSK解调器和系统，其工作在具有固定光延迟的多个等间隔DWDM信道上，能够使用20 GHz或25 GHz固定自由光谱范围的延迟干涉仪在ITU网格内的DWDM通信波段内的信号内解调DQPSK。

公开(公告)号：US20080089681A1

公开(公告)日：2008-04-17

申请号：US11862739

申请日：2007-09-27

申请人： Yutaka YANO

发明人： Yutaka YANO

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04B10/07955 ,  H04B10/0773

摘要： A monitoring system according to an exemplary aspect of the invention is a monitoring system for use in an optical transmission system that monitors an input level of an optical amplifier and issues an alarm if the input level gets out of a predetermined range, wherein a threshold value for issuing the alarm to decide the predetermined range is set from the outside.

摘要翻译： 根据本发明的示例性方面的监视系统是用于光传输系统中的监视系统，其监视光放大器的输入电平并且如果输入电平超出预定范围则发出报警，其中阈值 从外部设定用于发出警报以决定预定范围。

公开(公告)号：US20120224848A1

公开(公告)日：2012-09-06

申请号：US13411194

申请日：2012-03-02

申请人： Yutaka YANO

发明人： Yutaka YANO

IPC分类号： H04B10/08

CPC分类号： H04B10/0793

摘要： An optical transmission system includes a first node and a second node, the first node includes a first optical amplifier which outputs a signal to the second node through a first transmission line and a first monitoring unit, the second node includes a monitor which monitors a signal from the first transmission line, a second optical amplifier which outputs a signal to the first node through a second transmission line and a second monitoring unit, upon detecting disconnection from the first transmission line, the second monitoring unit transmits a notification for making power of the first optical amplifier reduced, upon receipt of the notification, the first monitoring unit reduces power of the first optical amplifier, and transmits a completion notification to the second monitoring unit, and upon not receiving the completion notification even after expiration of an allowed time, the second monitoring unit reduces power of the second optical amplifier.

摘要翻译： 光传输系统包括第一节点和第二节点，第一节点包括通过第一传输线和第一监视单元向第二节点输出信号的第一光放大器，第二节点包括监视信号的监视器 从第一传输线路，第二光放大器，当检测到与第一传输线路断开时，通过第二传输线路和第二监控单元向第一节点输出信号，第二监视单元发送用于使第 第一光放大器在接收到通知时减小，第一监视单元降低第一光放大器的功率，并将完成通知发送到第二监视单元，并且即使在允许的时间期满之后还没有接收到完成通知， 第二监视单元降低第二光放大器的功率。

公开(公告)号：US20130051796A1

公开(公告)日：2013-02-28

申请号：US13594475

申请日：2012-08-24

申请人： Yutaka YANO

发明人： Yutaka YANO

IPC分类号： H04Q11/00 ,  H04B10/08

CPC分类号： H04Q11/00 ,  H04B10/07955 ,  H04B10/0797

摘要： A transponder device that can form D&C paths with great versatility and high reliability without complicating a device configuration is provided, as well as an optical branching device and an optical signal transmission method. The transponder device that is independent of any directions of a wavelength switching function section at a node in a WDM transport network includes a D&C branching means that branches an optical signal input from the wavelength switching function section into one stream of dropped light and at least one stream of continued light.

摘要翻译： 提供了可以形成具有多功能性和高可靠性的D＆C路径而不使设备配置复杂化的应答器设备，以及光分路设备和光信号传输方法。 独立于WDM传送网络中的节点处的波长切换功能部分的任何方向的应答器设备包括D＆C分支装置，其将从波长切换功能部分输入的光信号分支成一束落下的光和至少一个 持续光线