公开(公告)号：US20090237778A1

公开(公告)日：2009-09-24

申请号：US12289469

申请日：2008-10-28

申请人： Miki Onaka

发明人： Miki Onaka

IPC分类号： H01S3/30

CPC分类号： H04B10/2916 ,  H04B10/0731 ,  H04B10/0797

摘要： A monitoring apparatus, based on an optical power monitored in photodetectors arranged at input and output ends of a transmission line, in a condition where pump light is supplied to the transmission line at a time of initial startup of an optical communication system, obtains a relationship for the noise light generated due to Raman amplification, between forward direction noise light power and backward direction noise light power, and while in service, converts the backward direction noise light power monitored by the photodetectors at the input ends of the transmission line into the forward direction noise light power in an arithmetic processing section, in accordance with the relationship obtained at the time of the initial startup. As a result the power of noise light generated due to Raman amplification, can be monitored in real time at high speed.

摘要翻译： 基于在光通信系统的初始启动时将泵浦光提供给传输线的情况下，在布置在传输线的输入和输出端的光电检测器中监测的光功率的监视装置获得关系 对于由于拉曼放大产生的噪声光，在正向噪声光功率和反向噪声光功率之间产生的噪声光，并且在使用中，将由传输线的输入端的光电探测器监视的反向噪声光功率转换成向前 根据初始启动时获得的关系，算术处理部中的方向噪声光功率。 结果，由拉曼放大产生的噪声光的功率可以高速实时监测。

公开(公告)号：US20090190204A1

公开(公告)日：2009-07-30

申请号：US12232900

申请日：2008-09-25

申请人： Miki Onaka ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

发明人： Miki Onaka ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

IPC分类号： H01S3/30

CPC分类号： H01S3/302 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/094096 ,  H01S3/10015 ,  H01S3/10069 ,  H01S3/1305 ,  H04B10/2916

摘要： The WDM optical transmission system using distributed Raman amplification, before starting operation of main signal light, transfers a plurality of lights having different wavelengths to that of the main signal light (for example Raman amplification pump lights or the like) between first and second optical transmission devices connected to opposite ends of a transmission line, monitors transmission line input and output power for each light, calculates a transmission line loss in each wavelength using the monitor results, and specifies a type of the transmission line based on a loss wavelength characteristic that can be estimated from the calculation result. Then the power of pump light provided to the transmission light is optimized in accordance with the type of transmission line.

摘要翻译： 在主信号光开始运行之前，使用分布式拉曼放大的WDM光传输系统将具有不同波长的多个光传输到第一和第二光传输之间的主信号光（例如拉曼放大泵浦光等） 连接到传输线的相对端的装置监测每个光的传输线输入和输出功率，使用监视结果计算每个波长的传输线损耗，并且基于可以根据监视结果的损耗波长特性来指定传输线的类型 根据计算结果估算。 然后根据传输线的类型优化提供给传输光的泵浦光的功率。

公开(公告)号：US06785042B1

公开(公告)日：2004-08-31

申请号：US09531015

申请日：2000-03-20

申请人： Miki Onaka ,  Susumu Kinoshita

发明人： Miki Onaka ,  Susumu Kinoshita

IPC分类号： H01S300

CPC分类号： H04B10/294 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/302 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/2916 ,  H04B10/2942 ,  H04B10/296

摘要： The present invention aims at providing a method for controlling wavelength characteristics of optical transmission powers by Raman amplification, in which the wavelength characteristics of optical transmission powers are automatically compensated without giving any losses to channel lights to thereby improve transmission characteristics, and an apparatus adopting the same. To this end, the method for controlling wavelength characteristics of optical transmission powers by Raman amplification according to the present invention supplies Raman pump light to an optical transmission path (Raman amplifying medium); compensates the wavelength characteristics of optical transmission powers caused by transmission of WDM signal light through the optical transmission path, by gain wavelength characteristics of generated Raman amplification; and monitors the wavelength characteristics of optical transmission powers after Raman amplification to thereby control the gain wavelength characteristics of Raman amplification.

摘要翻译： 本发明的目的在于提供一种用于通过拉曼放大来控制光发射功率的波长特性的方法，其中光传输功率的波长特性被自动补偿，而不会对信道灯造成任何损耗，从而提高传输特性，并且采用 相同。 为此，根据本发明的用于通过拉曼放大来控制光传输功率的波长特性的方法将拉曼泵浦光提供给光传输路径（拉曼放大介质）; 补偿通过光传输路径传输WDM信号光引起的光传输功率的波长特性，通过生成拉曼放大的增益波长特性; 并监测拉曼放大后的光传输功率的波长特性，从而控制拉曼放大的增益波长特性。

公开(公告)号：US06724526B1

公开(公告)日：2004-04-20

申请号：US09628811

申请日：2000-07-28

申请人： Miki Onaka ,  Susumu Kinoshita

发明人： Miki Onaka ,  Susumu Kinoshita

IPC分类号： H01S300

CPC分类号： H04J14/0221 ,  H04B10/25073 ,  H04J14/0201 ,  H04J14/0208 ,  H04J14/021 ,  H04J14/0213

摘要： It is aimed at providing an inter-wavelength light power deviation monitoring method capable of directly measuring the signal light power to thereby detect the light power deviations among channels without requiring a higher wavelength resolution, and providing an optical equalizer and an optical amplifier adopting such a monitoring method. To this end, the monitoring method of the present invention comprises the steps of: obtaining channel information concerning WDM signal light; setting, based on the channel information, at least two measuring wavelength regions; measuring channel light power of the WDM signal light, for only the measuring wavelength regions; and obtaining light power ratio for the respective measuring wavelength regions making use of the measured values, to thereby judge the inter-wavelength light power deviations of the WDM signal light.

摘要翻译： 本发明的目的在于提供一种能够直接测量信号光功率从而检测信道中的光功率偏差而不需要更高的波长分辨率的波长间光功率偏差监测方法，并且提供一种光均衡器和采用这种 监测方法。 为此，本发明的监视方法包括以下步骤：获得关于WDM信号光的信道信息; 基于所述信道信息设置至少两个测量波长区域; 测量WDM信号光的通道光功率，仅用于测量波长区域; 并且利用测量值获得各个测量波长区域的光功率比，从而判断WDM信号光的波长间光功率偏差。

公开(公告)号：US08837037B2

公开(公告)日：2014-09-16

申请号：US13425024

申请日：2012-03-20

申请人： Miki Onaka

发明人： Miki Onaka

IPC分类号： H01S3/00

CPC分类号： H01S3/235 ,  H01S3/005 ,  H01S3/06754 ,  H01S3/10007 ,  H01S5/50 ,  H04Q11/0003 ,  H04Q11/0066 ,  H04Q2011/002 ,  H04Q2011/0035

摘要： An optical delay device includes an optical path in which an input optical signal travels the same path recursively; an optical switch that switches between an output state of outputting the optical signal input to the optical path, and a non-output state of not outputting the optical signal input to the optical path; and a controller that sets the optical switch to the non-output state until a point in time when a given delay time elapses since input of the optical signal to the optical path and at the point in time when the given delay time elapses, switches the optical switch to the output state.

摘要翻译： 光延迟装置包括光路，其中输入光信号以相同的路径递归地传播; 在输出到光路的光信号的输出状态和不输出输入到光路的光信号的非输出状态之间切换的光开关; 以及控制器，其将光开关设置为非输出状态，直到从光信号输入到光路并且在给定延迟时间过去的时间点经过给定延迟时间的时间点之后，切换 光开关转为输出状态。

公开(公告)号：US08538264B2

公开(公告)日：2013-09-17

申请号：US12788773

申请日：2010-05-27

申请人： Masahiro Yuki ,  Tsukasa Takahashi ,  Miki Onaka ,  Norifumi Shukunami ,  Tatsuya Tsuzuki ,  Toshihiro Ohtani ,  Ryosuke Goto

发明人： Masahiro Yuki ,  Tsukasa Takahashi ,  Miki Onaka ,  Norifumi Shukunami ,  Tatsuya Tsuzuki ,  Toshihiro Ohtani ,  Ryosuke Goto

IPC分类号： H04B10/00 ,  H04B10/12 ,  H04J14/02

CPC分类号： H04B10/25133

摘要： A dispersion compensating apparatus includes a tunable dispersion compensator that dispersion-compensates an optical signal using a group delay property that is asymmetrical in bands outside an effective band; a set device that sets a dispersion compensation amount in the tunable dispersion compensator; and a shifter that shifts a central frequency of the effective band of the tunable dispersion compensator, based on the dispersion compensation amount set by the set device.

摘要翻译： 色散补偿装置包括可调色散补偿器，其使用在有效频带之外的频带中不对称的组延迟特性对光信号进行色散补偿; 设置可调色散补偿器中的色散补偿量的集合装置; 以及基于由所述设定装置设定的色散补偿量，使所述可调色散补偿器的有效频带的中心频率偏移的移位器。

公开(公告)号：US08482849B2

公开(公告)日：2013-07-09

申请号：US12585045

申请日：2009-09-01

申请人： Miki Onaka

发明人： Miki Onaka

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/094073 ,  H01S3/09408 ,  H01S3/1301 ,  H01S2301/04

摘要： A Raman amplifier, at the time of start up or the like, drives a predetermined number of pump light sources among a plurality of pump light sources, in a stable region, and judges a Raman gain in the transmission line, and based on the judgment result, specifies a pump light source to switch on and a pump light source to switch off, among the plurality of pump light sources, and controls the drive state of the pump light sources that are switched on. As a result, the plurality of pump light sources are appropriately driven corresponding to the system requirements so that stable behavior is possible, and constant control of Raman gain can be realized at a high accuracy.

摘要翻译： 在启动等时，拉曼放大器在稳定区域中驱动多个泵浦光源中的预定数量的泵浦光源，并且判断传输线中的拉曼增益，并且基于判断 结果，指定在多个泵浦光源之间开启的泵浦光源和泵浦光源关闭，并且控制被接通的泵浦光源的驱动状态。 结果，根据系统要求适当地驱动多个泵浦光源，使得稳定的行为成为可能，并且可以高精度地实现拉曼增益的恒定控制。

公开(公告)号：US08315529B2

公开(公告)日：2012-11-20

申请号：US12640381

申请日：2009-12-17

申请人： Miki Onaka

发明人： Miki Onaka

IPC分类号： H04B10/06

摘要： An optical receiver for receiving a wavelength channel signal light separated out of a wavelength division multiplexed signal light including a plurality of wavelength channel signal lights, the optical receiver includes an optical amplifier for amplifying the wavelength channel signal light, a cyclic filter having a transmission wavelength characteristic of periodically changing transmittance property for a wavelength interval between a wavelength of an adjacent wavelength channel signal light and a wavelength of the wavelength diversion multiplexed signal light, the cyclic filter passing the wavelength channel signal light amplified by the optical amplifier, and a demodulator operably connected to the cyclic filter for demodulating the wavelength channel signal light output from the cyclic filter into an electrical signal.

公开(公告)号：US20100221021A1

公开(公告)日：2010-09-02

申请号：US12644038

申请日：2009-12-22

申请人： Miki Onaka ,  Kazuto Imai

发明人： Miki Onaka ,  Kazuto Imai

IPC分类号： H04B10/06

CPC分类号： H04B10/671 ,  H04J14/0201

摘要： An optical receiver that can receive WDM signal light in which first and second wavelength bands are combined. Within optical reception units corresponding to each channel is respectively provided tunable dispersion compensator (TDC) modules in which one wavelength band is made a design standard. When known, based on signal light channel information (wavelength, frequency, channel number) notified from outside, that signal light of the second wavelength band is being input to the receiver, then in the TDC module that performed chromatic dispersion compensation of the signal light, control is performed to shift the center frequency of the dispersion compensation range by a predetermined amount corresponding to the wavelength of the signal light. When the signal light of the first wavelength band is input, shift control of the dispersion compensation range is not performed, and the dispersion compensation range at the time of designing is maintained. As a result, chromatic dispersion compensation of signal light of respective wavelength bands can be performed with high accuracy by one type of TDC.

摘要翻译： 可以接收其中组合第一和第二波长带的WDM信号光的光接收器。 内对应于每个信道的光接收单元被分别设置可调谐色散补偿器（TDC）的模块，其中一个波长带是由一个设计标准。 当公知的，基于从外部通知的信号光的信道信息（波长，频率，信道数），所述第二波长频带的该信号光被输入到接收器，则在所执行的信号光的色散补偿的TDC模块 ，执行控制以将色散补偿范围的中心频率移动与信号光的波长对应的预定量。 当输入第一波长带的信号光时，不执行色散补偿范围的偏移控制，并且维持设计时的色散补偿范围。 结果，可以通过一种类型的TDC以高精度执行各波段的信号光的色散补偿。

公开(公告)号：US20090016727A1

公开(公告)日：2009-01-15

申请号：US12169454

申请日：2008-07-08

申请人： Taichi Ueki ,  Miki Onaka

发明人： Taichi Ueki ,  Miki Onaka

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04B10/07955 ,  H04B10/294 ,  H04J14/0204 ,  H04J14/0217

摘要： An optical transmission apparatus includes a reception part for receiving a wavelength division multiplexed (WDM) signal reached via optical amplifiers; a measuring part for measuring an optical power level of each wavelength of the WDM signal received by the reception part; a determination part for determining whether an amount of tilt of the WDM signal calculated based on measurement results of the measuring part is suitable or not; an operation part for calculating the tilt correction amount to be applied to tilt correction processing performed by the optical amplifiers if the amount of tilt of the WDM signal is not suitable; and a notification part for notifying the optical amplifiers of the tilt correction amount.

摘要翻译： 光传输装置包括用于接收通过光放大器到达的波分复用（WDM）信号的接收部分; 测量部分，用于测量由接收部分接收的WDM信号的每个波长的光功率电平; 确定部分，用于确定基于测量部分的测量结果计算出的WDM信号的倾斜量是否合适; 操作部，用于如果WDM信号的倾斜量不合适，则计算用于由光放大器执行的倾斜校正处理的倾斜校正量; 以及用于通知光放大器倾斜校正量的通知部。