公开(公告)号：US07676127B2

公开(公告)日：2010-03-09

申请号：US11858566

申请日：2007-09-20

申请人： Masahiko Mizutani ,  Toshiki Sugawara ,  Tohru Kazawa ,  Yoshihiro Ashi

发明人： Masahiko Mizutani ,  Toshiki Sugawara ,  Tohru Kazawa ,  Yoshihiro Ashi

IPC分类号： G02B6/28

CPC分类号： H04B1/707 ,  H04B2201/70715 ,  H04J14/005 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0269 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0086

摘要： In a PON system, an OLT periodically transmits a channel resource information block specifying a carrier wavelength and a spreading code on a first downstream channel to which a spread-spectrum spreader having a first spreading code is applied; one of ONUs receives the channel resource information block with a spread-spectrum despreader having the first spreading code and transmits a connection request to the OLT, using the carrier wavelength and the spreading code specified by the channel resource information block; the OLT having received the connection request transmits a new channel resource information block specifying a carrier wavelength and a spreading code to be used on an upstream data channel to the requester ONU through the first channel; and the requester ONU transmits data, using the carrier wavelength and the spreading code specified by the new channel resource information block.

摘要翻译： 在PON系统中，OLT在具有应用具有第一扩展码的扩频扩频器的第一下行信道周期性地发送指定载波波长和扩展码的信道资源信息块; 一个ONU使用具有第一扩展码的扩频解扩器接收信道资源信息块，并使用由信道资源信息块指定的载波波长和扩展码向OLT发送连接请求; 已经接收到连接请求的OLT通过第一信道向请求者ONU发送指定用于上行数据信道的载波波长和扩展码的新信道资源信息块; 并且请求者ONU使用载波波长和由新的信道资源信息块指定的扩展码来发送数据。

公开(公告)号：US20090310964A1

公开(公告)日：2009-12-17

申请号：US12379107

申请日：2009-02-12

申请人： Toshiki Sugawara ,  Yusuke Yajima ,  Tohru Kazawa

发明人： Toshiki Sugawara ,  Yusuke Yajima ,  Tohru Kazawa

IPC分类号： H04B10/20

CPC分类号： H04B10/85 ,  H04B10/272 ,  H04J3/14

摘要： There is provided an abnormal light cut-off system in which even when a high power light is inputted from an optical fiber connected to a user side apparatus by a malicious user or an accident, a trouble rate is low, the abnormal light is cut off at high sensitivity, and security is high. In a network system in which an optical line terminating apparatus and plural optical network apparatuses are connected together via plural optical connection sections and an optical branching section, the optical branching section includes one optical line terminating apparatus side port and plural optical network apparatus side branch ports, an optical line terminating apparatus side optical fiber connects the optical line terminating apparatus and the one optical line terminating apparatus side port, an optical branching section side optical fiber connects the optical network apparatus side branch port and a light cut-off section, and an optical network apparatus side optical fiber connects the light cut-off section and the optical network apparatus. When an abnormal light is inputted from the optical network apparatus side, it is cut off by the light cut-off section.

摘要翻译： 提供了一种异常的遮光系统，其中即使从恶意用户或事故连接到用户侧设备的光纤输入高功率光，故障率低，异常光被切断 灵敏度高，安全性高。 在光线路终端装置和多个光网络装置经由多个光连接部和光分支部连接的网络系统中，光分支部包括一个光线路终端装置侧端口和多个光网络装置侧分支端口 光线路终端装置侧光纤将光线路终端装置与一根光线路终端装置侧端口连接，光分路部侧光纤将光网络装置侧分支端口与遮光部分连接， 光网络装置侧光纤连接光切断部和光网络装置。 当从光网络装置侧输入异常光时，被遮光部切断。

公开(公告)号：US20090304388A1

公开(公告)日：2009-12-10

申请号：US12477952

申请日：2009-06-04

申请人： Kazuyori UMEMATSU ,  Yusuke Yajima ,  Tsuyoshi Kano ,  Toshiki Sugawara

发明人： Kazuyori UMEMATSU ,  Yusuke Yajima ,  Tsuyoshi Kano ,  Toshiki Sugawara

IPC分类号： H04J14/02

CPC分类号： H04J14/0282

摘要： In the case where, in a WDM-PON system, a high-output optical signal or a pseudo signal for illegal access by a hostile user, or an optical signal with a wavelength which is not assigned from an OLT is input to an ONU-side optical fiber, the quality of communications for other users is possibly affected and a receiver on the station side is possibly destroyed. By providing an optical blocking unit at a position near an ONU-side optical splitter of an optical branching unit, in the case where input of an extraordinary optical signal is detected, an optical route into which the extraordinary optical signal is input is blocked, so that the input of the extraordinary optical signal to an OLT and optical lines shared by plural users can be preliminarily blocked.

摘要翻译： 在WDM-PON系统中，由用户非法接入的高输出光信号或伪信号或者没有从OLT分配的具有波长的光信号输入到ONU- 其他用户的通信质量可能受到影响，站侧的接收机可能被破坏。 通过在光分路单元的ONU侧光分路器附近的位置设置光阻断单元，在检测到异常光信号的输入的情况下，输入异常光信号的光路被阻塞，所以 可以预先阻止非常光信号向OLT和多个用户共享的光线路的输入。

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：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：US07386012B2

公开(公告)日：2008-06-10

申请号：US10728260

申请日：2003-12-03

申请人： Toshiki Sugawara ,  Masaki Ohira ,  Yukio Nakano ,  Takashi Mori

发明人： Toshiki Sugawara ,  Masaki Ohira ,  Yukio Nakano ,  Takashi Mori

IPC分类号： H04J3/24

CPC分类号： H04J3/1611 ,  H04J2203/0057 ,  H04J2203/0089 ,  H04Q11/0478

摘要： An overhead passing processing circuit in a synchronous multiplex network, with a circuit for extracting predetermined administration and maintenance operating information from multiplexed signals, a crossconnecting circuit for crossconnecting information extracted by the extraction circuit stage, and an insertion circuit for inserting an output of the crossconnecting circuit into a predetermined location in the overhead of the multiplexed signal to be transmitted.

摘要翻译： 一种同步多路复用网络中的开销通过处理电路，具有用于从多路复用信号中提取预定的管理和维护操作信息的电路，用于交叉连接由提取电路级提取的信息的交叉连接电路和用于插入交叉连接的输出的插入电路 电路进入待传输的复用信号的开销中的预定位置。

公开(公告)号：US20050185577A1

公开(公告)日：2005-08-25

申请号：US11115125

申请日：2005-04-27

申请人： Kenichi Sakamoto ,  Noboru Endo ,  Toshiki Sugawara ,  Koji Wakayama ,  Kazuyoshi Hoshino

发明人： Kenichi Sakamoto ,  Noboru Endo ,  Toshiki Sugawara ,  Koji Wakayama ,  Kazuyoshi Hoshino

IPC分类号： H04L12/56 ,  H04J14/02 ,  H04L12/26

CPC分类号： H04J14/0295 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0278 ,  H04J14/0283 ,  H04J14/029 ,  H04J14/0294 ,  H04J14/0297 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/0847 ,  H04L43/10 ,  H04L43/16

摘要： In an IP packet communication apparatus, an operation and maintenance function capable of monitoring a transmission path is provided to a layer used to process a packet, which corresponds to an upper layer of an optical network. As one method for applying the operation and maintenance function to the packet layer, in the case of IP over PPP over WDM, an operation/maintenance frame is defined to a PPP frame so as to realize the operation/maintenance function of a PPP connection. In the case that a plurality of connections are multiplexed on the same transmission path, a maintenance frame is conducted in order to operate/manage these connections by being grouped, so that a fault occurring in the optical network is monitored. As another method for applying the operation and maintenance function to the packet layer, an operation/maintenance frame is defined to an IP packet so as to realize an operation and maintenance function of an IP flow. Also, since a plurality of flows are multiplexed on the same transmission path, a management packet is defined to operate/manage these flows to be grouped, so that a fault occurring the in the optical network is monitored.

摘要翻译： 在IP分组通信装置中，向用于处理对应于光网络的上层的分组的层提供能够监视传输路径的操作和维护功能。 作为对分组层应用操作和维护功能的一种方法，在通过WDM通过PPP的IP的情况下，将操作/维护帧定义为PPP帧，以实现PPP连接的操作/维护功能。 在多个连接被复用在同一传输路径上的情况下，进行维护帧以通过分组来操作/管理这些连接，从而监视在光网络中发生的故障。 作为对分组层应用操作和维护功能的另一种方法，将IP分组定义为操作/维护帧，以实现IP流的操作和维护功能。 此外，由于多个流在同一传输路径上多路复用，所以管理分组被定义为对这些流进行分组操作/管理，从而监视在光网络中发生的故障。

公开(公告)号：US20050185576A1

公开(公告)日：2005-08-25

申请号：US11114178

申请日：2005-04-26

申请人： Toshiki Sugawara ,  Noboru Endo ,  Kenichi Sakamoto

发明人： Toshiki Sugawara ,  Noboru Endo ,  Kenichi Sakamoto

IPC分类号： H04J3/16 ,  H04L1/00

CPC分类号： H04J3/1611 ,  H04J14/0289 ,  H04J14/0293

摘要： Interlayer-coordinated communication-line switching in a network including two layers, each having a switching function. In the present invention, a communication apparatus which (1) is connected with a network including (i) lower layer apparatus which are connected with communication lines of a lower layer and communication lines of an upper layer and conducts line switching in the lower layer and (ii) upper layer apparatuses which are connected with the communication lines of the upper layer and have means for line switching in the upper layer and (2) detects line failure and coordinates line switching using failure information on the lower and upper layer communication lines.

摘要翻译： 在包括两层的网络中的层间协调通信线路交换，每个层具有切换功能。 在本发明中，（1）的通信装置与网络连接，包括：（i）下层装置，其与下层的通信线路和上层的通信线路连接，并在下层进行线路交换;以及 （ii）与上层的通信线路连接并具有上层线路交换装置的上层装置，（2）利用上下层通信线路的故障信息检测线路故障和坐标线路切换。

公开(公告)号：US06697386B2

公开(公告)日：2004-02-24

申请号：US09731424

申请日：2000-12-06

申请人： Toshiki Sugawara ,  Masaki Ohira ,  Yukio Nakano ,  Takashi Mori

发明人： Toshiki Sugawara ,  Masaki Ohira ,  Yukio Nakano ,  Takashi Mori

IPC分类号： H04J304

CPC分类号： H04J3/1611 ,  H04J2203/0057 ,  H04J2203/0089 ,  H04Q11/0478

摘要： In a synchronous multiplex network including a plurality of multiplex transmission apparatuses, an overhead is passed through intervening multiplex transmission apparatuses such that administration and maintenance operation information is transmitted and received through the overhead between arbitrary multiplex transmission apparatuses. The multiplex transmission apparatus receives a multiplexed signal comprising a payload having a plurality of main signals multiplexed therein and overhead bytes including a plurality of administration and maintenance operation information, performs termination processing for the administration and maintenance operation information and transmission processing for the payload, thereafter converts the multiplexed signal into a different multiplexed signal comprising a payload which has been processed for transmission and a plurality of administration and maintenance operation information, and transmits the different multiplexed signal.

摘要翻译： 在包括多个多路传输装置的同步多路复用网络中，通过中间多路复用传输装置，通过任意多路复用传输装置之间的开销发送和接收管理和维护操作信息。 多路复用发送装置接收包含多路复用的多个主信号的有效载荷和包含多个管理维护操作信息的开销字节的多路复用信号，执行管理和维护操作信息的终止处理以及有效负载的发送处理 将多路复用的信号转换为包括已经被处理以进行传输的有效载荷和多个管理和维护操作信息的不同复用信号，并发送不同的复用信号。

公开(公告)号：US06388804B1

公开(公告)日：2002-05-14

申请号：US09808944

申请日：2001-03-16

申请人： Toshiki Sugawara

发明人： Toshiki Sugawara

IPC分类号： H01S300

CPC分类号： H01S3/1301 ,  H01S3/06754 ,  H01S3/10069 ,  H01S2301/04

摘要： Disclosed is an optical amplifier which is smaller in power consumption and number of component parts, simpler in structure, and rid of wavelength dependency of gain against the variation of input light power and temperature. The optical amplifier has a characteristic information table which stores data of a proper curve indicative of the relation between the pumping light power and output light power of the optical amplifying medium at a constant gain tilt of wavelength-multiplexed signal light, and a pumping light controller which controls the pumping power such that the output light power and pumping light power of the optical amplifying medium are related to lie on the proper curve.

摘要翻译： 公开了一种光功率放大器，其组成部件数量较少，结构简单，并且消除了增益对输入光功率和温度变化的波长依赖性。 光放大器具有特征信息表，其以波长复用信号光的恒定增益倾斜存储表示光放大介质的泵浦光功率和输出光功率之间的关系的适当曲线的数据，以及泵浦光控制器 其控制泵浦功率，使得光放大介质的输出光功率和泵浦光功率位于适当的曲线上。