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31. 发明授权

US5959764A Wavelength converter, optically operational device and optical pulse phase detecting circuit 失效
标题翻译：波长转换器，光学运算器件和光脉冲相位检测电路
公开(公告)号：US5959764A
公开(公告)日：1999-09-28
申请号：US923349
申请日：1997-09-04
申请人： Noboru Edagawa , Masatoshi Suzuki , Shu Yamamoto
发明人： Noboru Edagawa , Masatoshi Suzuki , Shu Yamamoto
IPC分类号： G02F2/02 , G02F1/015 , G02F2/00 , G02F3/00 , H04B10/2507 , H04B10/29 , H04B10/516 , H04B10/54 , H04B10/572 , H04B10/58 , H04B10/61 , H04J14/08 , G02F1/39
CPC分类号： G02F2/004 , G02F2001/0157 , H01S5/509 , H04J14/08
摘要： A waveform converter includes a transmission-type InGaAsP electroabsorption optical modulator 10 using the Franz-Keldysh effect. Continuous light (probe light) 12 as a target of wavelength conversion is fed to an end surface 10a of the optical modulator 10 while a constant voltage of 3 V is applied to the optical modulator 10. An optical circulator 14 is supplied with original signal light (signal light to be waveform-converted) 16 through its terminal A, and delivers it from the terminal B thereof to another end surface 10b of the optical modulator 10. The optical modulator 10 gives a loss to the probe light 12 according to the intensity of the original signal light 16 and makes the waveform of the probe light 12 to be substantially the same as the original signal light. The probe light waveform-converted by the optical modulator 10 and output from the end surface 10b is fed to a terminal B of an optical circulator 14 as a waveform-converted light 18 and output from its terminal C.
摘要翻译：波形转换器包括使用Franz-Keldysh效应的透射型InGaAsP电吸收光调制器10。将作为波长转换的目标的连续光（探测光）12馈送到光调制器10的端面10a，同时将3V的恒定电压施加到光调制器10。光环行器14被提供有原始信号光（要被波形转换的信号光）16，并将其从端子B传送到光调制器10的另一端面10b。光调制器10根据强度给探测光12带来损耗的原始信号光16，使探测光12的波形基本上与原始信号光相同。由光调制器10波形转换并从端面10b输出的探测光被作为波形转换光18馈送到光环行器14的端子B，并从其端子C输出。

32. 发明申请

US20090263133A1 OPTICAL COMMUNICATION NETWORK SYSTEM, PARENT STATION OPTICAL COMMUNICATION DEVICE, AND CHILD STATION OPTICAL COMMUNICATION DEVICE 审中-公开
标题翻译：光通信网络系统，主站光通信设备和儿童站光通信设备
公开(公告)号：US20090263133A1
公开(公告)日：2009-10-22
申请号：US12065155
申请日：2006-08-30
申请人： Junichi Nakagawa , Keiji Tanaka , Masato Kuwazuru , Noboru Edagawa
发明人： Junichi Nakagawa , Keiji Tanaka , Masato Kuwazuru , Noboru Edagawa
IPC分类号： H04J14/00
CPC分类号： H04J14/0226 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04Q11/0067 , H04Q2011/0064 , H04Q2011/0069 , H04Q2011/009
摘要： In a downstream channel communication, an individual downstream channel wavelength is allocated to each group of user nodes, and for user nodes in a same group, a central office performs a downstream-signal communication by a same communication method using the individual downstream channel wavelength. In an upstream channel communication, all user nodes perform an upstream-signal communication with the central office using a single upstream channel. A downstream signal from the central office is distributed to the groups for each individual downstream channel wavelength, and upstream signals from the user nodes are transmitted to the central office in a multiplexing manner.
摘要翻译：在下游信道通信中，将各个下行信道波长分配给每组用户节点，并且对于同一组中的用户节点，中心局通过使用各个下游信道波长的相同通信方式执行下行信号通信。在上游信道通信中，所有用户节点使用单个上游信道执行与中心局的上行信号通信。来自中心局的下行信号被分配给每个单独下游信道波长的组，并且来自用户节点的上行信号以复用方式发送到中心局。

33. 发明申请

US20050185705A1 Control method of xDSL modem and xDSL modem 审中-公开
标题翻译： xDSL调制解调器和xDSL调制解调器的控制方法
公开(公告)号：US20050185705A1
公开(公告)日：2005-08-25
申请号：US11061968
申请日：2005-02-16
申请人： Keiji Tanaka , Toshitaka Miyaoka , Noboru Edagawa
发明人： Keiji Tanaka , Toshitaka Miyaoka , Noboru Edagawa
IPC分类号： H04L29/08 , H04B1/38 , H04B3/23 , H04M11/00
CPC分类号： H04B3/238 , H04M3/2227 , H04M3/304
摘要： According to one embodiment of the invention, a control method of an xDSL modem to transmit/receive signals to/from an outer xDSL modem through an analog transmission line such as a telephone line is provided. A line quality of the analog transmission line is measured by training. A line profile is determined as a current profile of the analog transmission line according to the results from the training. A link is established with the determined current profile. Disconnected link is recovered with a standby profile.
摘要翻译：根据本发明的一个实施例，提供了一种通过诸如电话线的模拟传输线路向/从外部xDSL调制解调器发送/接收信号的xDSL调制解调器的控制方法。通过训练测量模拟传输线的线路质量。根据训练的结果，线路轮廓被确定为模拟传输线的当前轮廓。使用确定的当前配置文件建立链接。备用配置文件恢复断开连接。

34. 发明授权

US06504638B1 Optical amplifying transmission system and optical amplifier 失效
标题翻译：光放大传输系统和光放大器
公开(公告)号：US06504638B1
公开(公告)日：2003-01-07
申请号：US09206512
申请日：1998-12-07
申请人： Keiji Tanaka , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
发明人： Keiji Tanaka , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
IPC分类号： H04B1016
CPC分类号： H04B10/294 , H04J14/0221
摘要： To increase the number of multiplexed wavelengths and to improve transmission characteristics in a wavelength-division-multiplexed transmission, a bandwidth compressor for bandwidth-compressing the wavelength-division-multiplexed signal light is disposed at a front part of respective optical amplifiers and a bandwidth expander for bandwidth-expanding the wavelength-division-multiplexed signal light output from said optical amplifiers is disposed at a rear part of said optical amplifiers.
摘要翻译：为了增加复用波长的数量并改善波分复用传输中的传输特性，用于带宽压缩波分复用信号光的带宽压缩器被布置在各个光放大器的前部，带宽扩展器为了带宽扩展，从所述光放大器输出的波分复用信号光布置在所述光放大器的后部。

35. 发明授权

US06775478B2 Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converter 失效
标题翻译：光TDM复用器，光TDM解复用器，WDM / TDM转换器和TDM / WDM转换器
公开(公告)号：US06775478B2
公开(公告)日：2004-08-10
申请号：US09816630
申请日：2001-03-23
申请人： Masatoshi Suzuki , Noboru Edagawa
发明人： Masatoshi Suzuki , Noboru Edagawa
IPC分类号： H04J400
CPC分类号： H04J14/0223 , H04J14/08
摘要： An optical TDM multiplexing apparatus to multiplex a plurality of input signals in the optical stage in the time domain according to the invention comprise a plurality of signal light sources to generate optical signals each having a wavelength different from the others to carry each of the plurality of the input signals, a timing adjuster to adjust timings between the respective optical signals so that each optical signal output from the plurality of the signal light sources is disposed on a time slot different from the others in the time domain, an optical multiplexer to multiplex each optical signal output from the timing adjuster in the wavelength domain and a wavelength converter to convert each wavelength of the output light from the optical multiplexer into a predetermined wavelength.
摘要翻译：根据本发明的用于在时域中的光学级中复用多个输入信号的光TDM复用设备包括多个信号光源，以产生每个具有不同于其他波长的波长的光信号，以携带多个输入信号，定时调整器，用于调整各光信号之间的定时，使得从多个信号光源输出的每个光信号在时域上设置在与其他信号光源不同的时隙上;光复用器，从波长域中的定时调节器输出的光信号和波长转换器，用于将来自光复用器的输出光的每个波长转换成预定波长。

36. 发明授权

US06459518B1 Optical transmitting apparatus 失效
标题翻译：光发射装置
公开(公告)号：US06459518B1
公开(公告)日：2002-10-01
申请号：US09329867
申请日：1999-06-11
申请人： Masatoshi Suzuki , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
发明人： Masatoshi Suzuki , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
IPC分类号： H04B1000
CPC分类号： H04B10/532
摘要： A laser diode continuously laser-oscillates and its output light is applied to an optical modulator. A pulse driver drives the optical modulator according to a data to be transmitted. A phase modulator is driven by a phase modulator driver and phase-modulates the output from the optical modulator. The polarization direction of the incident light of the phase modulator is set so that the modulation efficiency of the phase modulator becomes the maximum. The output light of the phase modulator inputs a birefringent medium and applies to an optical transmission line after transmitting the birefringent medium. The principal axis of the birefringent medium is disposed so as to be at an angle of 45° to the polarization direction of the output light from the phase modulator.
摘要翻译：激光二极管连续激光振荡，其输出光被施加到光学调制器。脉冲驱动器根据要发送的数据驱动光调制器。相位调制器由相位调制器驱动器驱动并对来自光调制器的输出进行相位调制。相位调制器的入射光的偏振方向被设定为使得相位调制器的调制效率达到最大。相位调制器的输出光输入双折射介质，并在透射双折射介质之后施加到光传输线。双折射介质的主轴被布置成与来自相位调制器的输出光的偏振方向成45°的角度。

37. 发明授权

US5889607A Optical modulator, optical short pulse generating device, optical waveform shaping device, and optical demultiplexer device 失效
标题翻译：光调制器，光短脉冲发生装置，光波形整形装置和光解复用装置
公开(公告)号：US5889607A
公开(公告)日：1999-03-30
申请号：US868976
申请日：1997-06-04
申请人： Masatoshi Suzuki , Noboru Edagawa , Itsuro Morita , Shu Yamamoto , Shigeyuki Akiba
发明人： Masatoshi Suzuki , Noboru Edagawa , Itsuro Morita , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： G02F1/01 , G02F1/015 , G02F1/025 , H01S5/00 , G02F1/03
CPC分类号： G02F1/015 , G02F1/0121 , G02F2001/0157 , G02F2203/06 , G02F2203/26
摘要： Incident light 1 is inputted to an electro-absorption-type optical modulator 4 via an optical circulator 2 and a lens 3, and subjected to intensity modulation that corresponds to a modulation signal 8. The optical signal outputted by the electro-absorption-type optical modulator 4 is inputted to a Faraday rotator 6 via a lens 5, and the plane of polarization is rotated 45.degree.. The optical signal transmitted by the Faraday rotator 6 is totally reflected by a totally reflecting mirror 7, inputted for the second time to the Faraday rotator 6, then passed through the lens 5 after the plane of polarization has been rotated 45.degree. by this Faraday rotator 6, and readmitted by the electro-absorption-type optical modulator 4. The output of the electro-absorption-type optical modulator 4 is emitted via the lens 3 and the optical circulator 2. The polarization dependence of insertion loss can be eliminated because the plane of polarization is rotated 90.degree., and the incident light 1 readmitted to the electro-absorption-type optical modulator 4 at any plane of polarization. In view of this, the polarization dependent loss of an electro-absorption-type optical modulator can be eliminated by employing such optical modulators and creating a high-performance optical short pulse generating device, optical waveform shaping device, and optical demultiplexer.
摘要翻译：入射光1通过光环行器2和透镜3输入到电吸收型光调制器4，经受与调制信号8对应的强度调制。由电吸收型光调制器4通过透镜5输入到法拉第转子6，偏振面旋转45度。由法拉第旋转器6传输的光信号被全反射镜7全反射，全反射镜7第二次输入到法拉第旋转器6，然后在该法拉第旋转器旋转了45°的偏振面之后通过透镜5 电吸收型光调制器4再次进入。电吸收型光调制器4的输出通过透镜3和光循环器2发射。插入损耗的偏振依赖性可以被消除，因为偏振平面旋转90°，入射光1以任何偏振平面返回到电吸收型光调制器4。鉴于此，可以通过采用这种光学调制器来消除电吸收型光学调制器的偏振相关损耗，并且产生高性能的光学短脉冲产生装置，光学波形整形装置和光学解复用器。

38. 发明授权

US5864421A Optical frequency shifter and optical soliton-like return-to-zero pulse transmission system using optical frequency shifter 失效
标题翻译：光移频器和光孤子回归到零脉冲传输系统使用光学变频器
公开(公告)号：US5864421A
公开(公告)日：1999-01-26
申请号：US864192
申请日：1997-05-28
申请人： Masatoshi Suzuki , Noboru Edagawa , Itsuro Morita , Shu Yamamoto , Shigeyuki Akiba
发明人： Masatoshi Suzuki , Noboru Edagawa , Itsuro Morita , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： G02F1/35 , G02F1/33 , G02F2/02 , H04B10/2507 , H04B10/2519 , H04B10/2525 , H04B10/2569 , H04B10/29 , H04B10/291 , H04B10/02
CPC分类号： H04B10/25077 , G02F1/33
摘要： An optical frequency shifter which has no insertion loss polarization dependency and no polarization mode dispersion is formed by: at least one ultrasonic wave generator for generating ultrasonic waves; at least one electric acousto-optic element forming at least one diffraction grating therein upon being applied with the ultrasonic waves generated by the ultrasonic wave generator; at least one polarization rotator for rotating a polarization plane of a first primary diffracted light produced by the diffraction grating, by 90.degree.; and a light path through which an input light is entered into the electric acousto-optic element at a Bragg angle of the diffraction grating in a prescribed direction side, the prescribed direction being defined as either identical or opposite to a propagation direction of the ultrasonic waves, so that the first primary diffracted light is produced by the diffraction grating from the input light, a polarization plane rotated light produced by the polarization rotator is entered into the electric acousto-optic element at a Bragg angle of the diffraction grating in the prescribed direction side, and a second primary diffracted light produced by the diffraction grating from the polarization plane rotated light is outputted as an output light. An optical soliton-like return-to-zero pulse transmission system using a combination of this optical frequency shifter and a fixed optical filter in an optical amplifier repeater is also disclosed.
摘要翻译：通过以下方法形成没有插入损耗极化依赖性和无偏振模色散的光学移频器：至少一个用于产生超声波的超声波发生器; 至少一个电声光学元件在被施加超声波发生器产生的超声波时形成至少一个衍射光栅; 至少一个偏振旋转器，用于将由衍射光栅产生的第一主衍射光的偏振面旋转90度; 以及在规定的方向侧以衍射光栅的布拉格角将输入光输入到电声元件中的光路，规定的方向被定义为与超声波的传播方向相同或相反，使得第一主衍射光由衍射光栅从输入光产生，由偏振旋转器产生的偏振面旋转的光以预定方向的衍射光栅的布拉格角进入电声元件输出由衍射光栅从偏振面旋转的光产生的第二主衍射光作为输出光。还公开了在光放大器中继器中使用该光移频器和固定滤光器的组合的光孤子状归零脉冲传输系统。

39. 发明授权

US5808789A Optically amplifying transmission system 失效
标题翻译：光放大传输系统
公开(公告)号：US5808789A
公开(公告)日：1998-09-15
申请号：US873568
申请日：1997-06-12
申请人： Noboru Edagawa , Hidenori Taga , Masatoshi Suzuki , Itsuro Morita , Shu Yamamoto , Shigeyuki Akiba
发明人： Noboru Edagawa , Hidenori Taga , Masatoshi Suzuki , Itsuro Morita , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： H01S3/10 , H01S3/06 , H04B3/04 , H04B10/2513 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02 , G02B6/26 , H04B3/14
CPC分类号： H04B10/2935 , H04B10/2912
摘要： An optically amplifying transmission system available for wider signal bands includes an optical transmission line 42 divided into two sections 42a and 42b, optically amplifying repeaters 48a having 7 m-long erbium-doped optical fibers to repeat transmission optical fibers 46a in the section 42a, and optically amplifying repeaters 48b having 10.8 m-long erbium-doped optical fibers to repeat transmission optical fibers 46b in the section 42b. The transmission optical fibers 46a an 46b are optical fibers absolutely identical in construction and length.
摘要翻译：可用于更宽信号频带的光放大传输系统包括分为两部分42a和42b的光传输线42，光放大具有7m长掺铒光纤的中继器48a，以重复部分42a中的传输光纤46a，以及将具有10.8m长的掺铒光纤的光放大中继器48b重复部分42b中的传输光纤46b。透射光纤46a，46b是结构和长度完全相同的光纤。

40. 发明授权

US5625479A Soliton optical communication system and optical transmitter and optical receiver therefor 失效
标题翻译： Soliton光通信系统及光发射机及光接收机
公开(公告)号：US5625479A
公开(公告)日：1997-04-29
申请号：US372668
申请日：1995-01-13
申请人： Masatoshi Suzuki , Noboru Edagawa , Hidenori Taga , Shu Yamamoto , Shigeyuki Akiba
发明人： Masatoshi Suzuki , Noboru Edagawa , Hidenori Taga , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： G02F1/35 , H04B10/2507 , H04B10/2513 , H04B10/40 , H04B10/50 , H04B10/508 , H04B10/556 , H04B10/58 , H04B10/60 , H04J14/08
CPC分类号： H04B10/25077 , H04J14/08
摘要： An optical transmitter which reverses the ON-OFF state of the optical intensity of a bright soliton lightwave and generates a dark soliton lightwave having an optical phase shift, an optical receiver for the dark soliton lightwave, and a superfast, high-capacity optical transmission system which is capable of increasing the soliton pulse array density while suppressing timing jitter. The optical transmission system is provided with the optical transmitter which transmits a dark soliton lightwave having digital information, the optical receiver which receives the dark soliton lightwave as a return-to-zero pulse and a transmission optical fiber interconnecting the transmitter and the receiver. The system has a construction in which the transmission optical fiber has, at the wavelength of the transmission lightwave, a normal dispersion value which makes negative the average wavelength dispersion value over the entire length of the optical fiber, and the average value of the wavelength dispersion value and the optical output intensity of the transmission optical fiber have values so that a non-linear optical effect and a wavelength dispersion effect, which are exerted on the transmission lightwave, are balanced with each other.
摘要翻译：一种光发射器，其反转明亮的孤子光波的光强度的ON-OFF状态并产生具有光学相移的暗孤子光波，用于暗孤子光波的光接收器，以及超快大容量光传输系统其能够在抑制定时抖动的同时增加孤子脉冲阵列密度。光传输系统设置有发射具有数字信息的暗孤子光波的光发射机，接收暗孤子光波作为归零脉冲的光接收机和互连发射机和接收机的传输光纤。该系统具有这样的结构，其中传输光纤在传输光波长的波长处具有在光纤的整个长度上使平均波长色散值为负的正常色散值，并且波长色散的平均值值和发射光纤的光输出强度具有使得施加在透射光波上的非线性光学效应和波长色散效应彼此平衡的值。

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