公开(公告)号：US06285479B1

公开(公告)日：2001-09-04

申请号：US09050105

申请日：1998-03-30

申请人： Kazue Okazaki ,  Hiroshi Onaka ,  Hideyuki Miyata ,  Yutaka Kai ,  Terumi Chikama

发明人： Kazue Okazaki ,  Hiroshi Onaka ,  Hideyuki Miyata ,  Yutaka Kai ,  Terumi Chikama

IPC分类号： H04J1402

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0221 ,  H04M1/274558 ,  H04M1/274583 ,  H04M2250/60 ,  H04Q2011/0016 ,  H04Q2011/0018 ,  H04Q2011/0024 ,  H04Q2011/0045 ,  H04Q2011/0049

摘要： The present invention relates to an optical cross connect unit comprising M wavelength separating sections for receiving multiplexed optical signals each having N kinds of wavelengths different from each other through M optical fibers, respectively, and for wavelength-separating each of the multiplexed optical signals into N optical signals, M optical reproduction relay sections each for conducting an optical reproduction and relay in a manner of making a conversion of each of the N optical signals, wavelength-separated in each of the wavelength separating sections, into an electric signal and then modulating it with a desired optical wavelength, a refill section for mutually refilling M sets of optical signals optically reproduced and relayed in the optical reproduction relay sections, a focusing section for focusing the M sets of optical signals refilled in the refill section, and a light source unit for supplying input lights having desired wavelengths to be modulated in the M optical reproduction relay sections. The light source unit includes N light sources for outputting lights having the N kinds of optical wavelengths, a multiplexing and branching section for multiplexing the lights from the N light sources to produce a multiplexed light having N kinds of optical wavelength components and further for branching the multiplexed light into M×N lights to output them as multiplexed and distributed lights, M wavelength filter sections for distributively receiving N multiplexed and distributed lights of the M×N multiplexed and distributed lights branched in the multiplexing and branching section to output N lights due to the passage of only arbitrary wavelengths of the N kinds of optical wavelengths, and a wavelength setting control section for setting optical wavelengths, which pass through the wavelength filter sections, so that they differ from each other. The N lights from each of the M wavelength filter sections are supplied as the input lights. In the case that many light sources are necessary for the modulation processing by modulators or the like, this optical cross connect unit is also suitable because of using given wavelengths from a small number of light sources for a lot of modulation processing.

公开(公告)号：US06243176B1

公开(公告)日：2001-06-05

申请号：US08917292

申请日：1997-08-25

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： H04J1402

CPC分类号： G02B6/29377 ,  G02B6/4215 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02 ,  H04J14/0224

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength &lgr;&thgr; of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用和发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长的预定带宽的四波混频抑制保护带，并且信号光 要复用的多个信道的波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。

公开(公告)号：US5696614A

公开(公告)日：1997-12-09

申请号：US781137

申请日：1997-01-09

申请人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

发明人： George Ishikawa ,  Hideyuki Miyata ,  Hiroshi Onaka ,  Motoyoshi Sekiya ,  Kazue Otsuka

IPC分类号： H04J14/00 ,  G02B6/34 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/299 ,  H04J14/02 ,  H04B10/00

CPC分类号： G02B6/29377 ,  G02B6/4215 ,  H04B10/25133 ,  H04B10/2525 ,  H04B10/25253 ,  H04B10/255 ,  H04B10/2563 ,  H04J14/0224 ,  H04B2210/252 ,  H04B2210/254 ,  H04B2210/258 ,  H04J14/02

摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength .lambda..sub.0 of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.

摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用并发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长λ0的预定带宽的四波混频抑制保护带，并且信号 要复用的多个信道的光波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。

公开(公告)号：US5646399A

公开(公告)日：1997-07-08

申请号：US593211

申请日：1996-01-29

申请人： Nobuhiro Fukushima ,  Hiroshi Onaka

发明人： Nobuhiro Fukushima ,  Hiroshi Onaka

IPC分类号： G02B5/20 ,  G02B6/28 ,  G02B6/34 ,  G02B7/00 ,  G02B26/00 ,  G02B27/28 ,  H01J40/14

CPC分类号： G02B6/4246 ,  G02B26/007 ,  G02B27/283 ,  G02B5/20 ,  G02B5/203 ,  G02B6/2713 ,  G02B6/2848 ,  G02B6/29311 ,  G02B6/29358 ,  G02B6/29361 ,  G02B6/29395 ,  G01J2003/1243 ,  G02B6/2786

摘要： A tunable filter module which can automatically make the center wavelength in the passband coincident with the center wavelength of a signal light beam according to variations in wavelength of the signal light beam. The tunable filter module includes a beam splitting mechanism for splitting an incident signal light beam into a first beam undeviated, a second beam deflected to one side of the first beam; and a third beam deflected to another side of the first beam, and a multilayer film filter located so as to transmit the first, second, and third beams. A first photodetector is located so as to detect the second beam, and a second photodetector is located so as to detect the third beam. A comparator is connected to the first and second photodetectors to compare outputs from the first and second photodetectors and output a differential signal indicative of the difference between these outputs. A tilt angle of the multilayer film filter is changed according to the differential signal so that the center wavelength in the passband of the multilayer film filter comes into coincidence with the center wavelength of the signal light beam.

摘要翻译： 根据信号光束的波长变化，可以自动使通带中的中心波长与信号光束的中心波长一致的可调谐滤波器模块。 可调谐滤波器模块包括分束机构，用于将入射信号光束分解成未被发射的第一光束，偏转到第一光束一侧的第二光束; 以及偏转到所述第一光束的另一侧的第三光束，以及多个膜滤光器，所述多层膜滤光器被定位成透射所述第一，第二和第三光束。 第一光电检测器被定位成检测第二光束，并且第二光电检测器被定位成检测第三光束。 比较器连接到第一和第二光电检测器以比较来自第一和第二光电检测器的输出，并输出指示这些输出之间的差的差分信号。 多层膜滤光器的倾斜角度根据差分信号而改变，使得多层膜滤光片的通带中的中心波长与信号光束的中心波长一致。

公开(公告)号：US5471336A

公开(公告)日：1995-11-28

申请号：US928101

申请日：1992-08-11

申请人： Hiroshi Onaka ,  Hideyuki Miyata ,  Takao Naito

发明人： Hiroshi Onaka ,  Hideyuki Miyata ,  Takao Naito

IPC分类号： H04B10/516 ,  H04B10/07 ,  H04B10/61 ,  H04B10/64 ,  H04N5/50

CPC分类号： H04B10/61 ,  H04B10/64

摘要： A cold start control system and method for use in a coherent lightwave communications system, in which received signal light is mixed with local light to obtain an IF signal. In the cold start control, the frequency of the local light and/or the frequency of the signal light is swept in the state of the system capable of detecting the IF signal and discrimination between the real/image states and relative correction are made, and then, an AFC operation is started.

摘要翻译： 一种在相干光波通信系统中使用的冷启动控制系统和方法，其中接收的信号光与本地光混合以获得IF信号。 在冷启动控制中，在能够检测IF信号的系统的状态下，本地光的频率和/或信号光的频率被扫描，并且进行实/图像状态之间的鉴别和相对校正，以及 那么AFC操作就开始了。

公开(公告)号：US07953329B2

公开(公告)日：2011-05-31

申请号：US12497884

申请日：2009-07-06

申请人： Hideyuki Miyata ,  Hiroshi Onaka

发明人： Hideyuki Miyata ,  Hiroshi Onaka

IPC分类号： H04B10/04

CPC分类号： H04B10/50575 ,  G02F2203/20 ,  H04B10/50595 ,  H04B10/572 ,  H04B10/58 ,  H04J14/0201 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0276 ,  H04J14/0283

摘要： An apparatus comprising an optical modulator modulating a light in accordance with a modulation signal and an operating point of the optical modulator, to thereby output a modulated optical signal; and a controller controlling the operating point in accordance with a branched portion of the modulated optical signal and a detected intensity of the modulation signal so that the operating point is kept stable when the detected intensity falls below a predetermined value.

摘要翻译： 一种装置，包括根据调制信号和光调制器的工作点调制光的光调制器，从而输出调制的光信号; 以及控制器，根据调制光信号的分支部分和调制信号的检测强度来控制工作点，使得当检测到的强度低于预定值时，工作点保持稳定。

公开(公告)号：US20100221013A1

公开(公告)日：2010-09-02

申请号：US12688137

申请日：2010-01-15

申请人： Hiroki OOI ,  Hiroshi Onaka ,  George Ishikawa

发明人： Hiroki OOI ,  Hiroshi Onaka ,  George Ishikawa

IPC分类号： H04J14/02 ,  H04B10/02 ,  H04B10/18

CPC分类号： H04B10/2557 ,  H04J14/02

摘要： An optical transmission apparatus for suppressing deterioration of transmission quality due to XPM in a wavelength division multiplexing optical communication system in which an intensity modulation optical signal and a phase modulation optical signal exist in a mixed form. The apparatus has an intensity inversion signal light output section which outputs light having an intensity pattern obtained by inverting intensity changes of the intensity modulation optical signal near a wavelength of the intensity modulation optical signal in arrangement on wavelength axis of optical wavelengths that can be multiplexed as a wavelength division multiplexed signal as intensity inversion signal light, and a wavelength division multiplexed optical signal output unit which wavelength-division-multiplexes the intensity modulation optical signal, the phase modulation optical signal and light from the intensity inversion signal light output section and outputs a wavelength division multiplexed optical signal.

摘要翻译： 一种光传输装置，用于在混合形式存在强度调制光信号和相位调制光信号的波分复用光通信系统中抑制由XPM导致的传输质量的恶化。 该装置具有强度反转信号光输出部，其输出具有通过将强度调制光信号的波长附近的强度调制光信号的强度变化反转的强度图形输出的光配置在可以多路复用的光波长的波长轴上 波分多路复用信号作为强度反转信号光，以及波分复用光信号输出单元，其对强度调制光信号，相位调制光信号和强度反转信号光输出部分的光进行波分复用，并输出 波分复用光信号。

公开(公告)号：US07577368B2

公开(公告)日：2009-08-18

申请号：US11953278

申请日：2007-12-10

申请人： Hideyuki Miyata ,  Hiroshi Onaka

发明人： Hideyuki Miyata ,  Hiroshi Onaka

IPC分类号： H04B10/04

CPC分类号： H04B10/50575 ,  G02F2203/20 ,  H04B10/50595 ,  H04B10/572 ,  H04B10/58 ,  H04J14/0201 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0276 ,  H04J14/0283

摘要： An apparatus comprising an optical modulator modulating a light in accordance with a modulation signal and an operating point of the optical modulator, to thereby output a modulated optical signal; and a controller controlling the operating point in accordance with a branched portion of the modulated optical signal and a detected intensity of the modulation signal so that the operating point is kept stable when the detected intensity falls below a predetermined value.

摘要翻译： 一种装置，包括根据调制信号和光调制器的工作点调制光的光调制器，从而输出调制的光信号; 以及控制器，根据调制光信号的分支部分和调制信号的检测强度来控制工作点，使得当检测到的强度低于预定值时，工作点保持稳定。

公开(公告)号：US07483639B2

公开(公告)日：2009-01-27

申请号：US09853323

申请日：2001-05-10

申请人： Takeshi Hoshida ,  Hiroshi Onaka ,  Takafumi Terahara

发明人： Takeshi Hoshida ,  Hiroshi Onaka ,  Takafumi Terahara

IPC分类号： H04B10/00

CPC分类号： H04B10/2916 ,  H01S3/094011 ,  H01S3/302

摘要： A method and system for transmitting information in an optical communication system includes modulating a non-intensity characteristic of an optical carrier signal with a data signal to generate an optical information signal. The optical information signal is transmitted over an optical link. The optical information signal is amplified over a length of the optical link with a co-launched amplification signal traveling in the optical link in a same direction as the optical information signal.

摘要翻译： 用于在光通信系统中发送信息的方法和系统包括用数据信号调制光载波信号的非强度特性以产生光信息信号。 光信息信号通过光链路传输。 光信息信号在光链路的长度上以与光信息信号相同的方向在光链路中行进的共同放大信号放大。

公开(公告)号：US07406262B2

公开(公告)日：2008-07-29

申请号：US11082958

申请日：2005-03-18

申请人： Goji Nakagawa ,  Hideyuki Miyata ,  Yutaka Kai ,  Hiroshi Onaka ,  Setsuo Yoshida ,  Kyosuke Sone ,  Tomohiro Ueno

发明人： Goji Nakagawa ,  Hideyuki Miyata ,  Yutaka Kai ,  Hiroshi Onaka ,  Setsuo Yoshida ,  Kyosuke Sone ,  Tomohiro Ueno

IPC分类号： H04J14/02

CPC分类号： H04B10/572 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/022 ,  H04J14/0227

摘要： An optical transmission device improved in quality and reliability of OADM function and permitting configuration of highly-flexible, economical OADM networks. A wavelength tunable filter variably selects a wavelength according to a control frequency. A filter controller applies the control frequency to the filter while scanning wavelength over an entire signal bandwidth, to detect, from a reference wavelength monitor signal supplied thereto, a reference control frequency which permits the filter to select a reference wavelength and according to which wavelength is matched. On receiving a wavelength selection request, the controller obtains a target control frequency from the reference control frequency and the position of a target wavelength relative to the reference wavelength, and applies the obtained frequency to the filter. A reference wavelength filter transmits the reference wavelength therethrough. A light-receiving element monitors the transmitted reference wavelength to generate the monitor signal.

摘要翻译： 一种光传输设备改进了OADM功能的质量和可靠性，并允许配置高度灵活，经济的OADM网络。 波长可调滤波器根据控制频率可变地选择波长。 滤波器控制器在整个信号带宽上扫描波长时将滤波器的控制频率施加到滤波器，从提供给其的参考波长监测信号中检测出允许滤波器选择参考波长的参考控制频率，根据哪个波长是 匹配。 在接收到波长选择请求时，控制器从参考控制频率和目标波长相对于参考波长的位置获得目标控制频率，并将获得的频率应用于滤波器。 参考波长滤波器透过参考波长。 光接收元件监测发射的参考波长以产生监测信号。