公开(公告)号：US08014672B2

公开(公告)日：2011-09-06

申请号：US11815031

申请日：2007-01-26

申请人： Hiroo Suzuki ,  Takashi Yamada ,  Katsumi Iwatsuki

发明人： Hiroo Suzuki ,  Takashi Yamada ,  Katsumi Iwatsuki

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04B10/0793 ,  H04B10/07957 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： According to the present invention, a star-type wavelength multiplexed communication network using optical TX/RX devices capable of assigning the wavelengths can be provided without using the monitoring light. In an embodiment of the present invention, an optical TX/RX device for transmitting and receiving a wavelength-multiplexed signal light comprises an optical receiver capable of varying the RX wavelength and an optical transmitter capable of varying the TX wavelength. The optical TX/RX device detects RX wavelengths not in use via the optical receiver, and assigns the RX wavelength of the optical receiver to one of the RX wavelengths not-in-use, and assigns the TX wavelength of the optical transmitter to a TX wavelength corresponding to the RX wavelength according to a correspondence table of TX and RX wavelengths in the memory. Then, the optical TX/RX device transmits a signal light on this TX wavelength, and detects the response on the RX wavelength. If the response is detected, communication is initiated using the assigned TX wavelength and the RX wavelength. If the response is not detected, the operation is repeated from the detection of RX wavelengths not in use to the transmission of the signal light on TX wavelength again.

摘要翻译： 根据本发明，可以在不使用监视光的情况下提供使用能够分配波长的光TX / RX装置的星型波长复用通信网。 在本发明的实施例中，用于发送和接收波分复用信号光的光TX / RX装置包括能够改变RX波长的光接收机和能够改变TX波长的光发射机。 光学TX / RX设备通过光接收器检测未使用的RX波长，并将光接收机的RX波长分配给不使用的RX波长之一，并将光发射机的TX波长分配给TX 根据存储器中的TX和RX波长的对应表，对应于RX波长的波长。 然后，光TX / RX设备在该TX波长上发送信号光，并检测RX波长的响应。 如果检测到响应，则使用分配的TX波长和RX波长启动通信。 如果没有检测到响应，则从检测不使用的RX波长再次发送TX波长的信号光，重复该操作。

公开(公告)号：US20090016726A1

公开(公告)日：2009-01-15

申请号：US11815031

申请日：2007-01-26

申请人： Hiroo Suzuki ,  Takashi Yamada ,  Katsumi Iwatsuki

发明人： Hiroo Suzuki ,  Takashi Yamada ,  Katsumi Iwatsuki

IPC分类号： H04J14/02

CPC分类号： H04J14/0227 ,  H04B10/0793 ,  H04B10/07957 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： According to the present invention, a star-type wavelength multiplexed communication network using optical TX/RX devices capable of assigning the wavelengths can be provided without using the monitoring light. In an embodiment of the present invention, an optical TX/RX device for transmitting and receiving a wavelength-multiplexed signal light comprises an optical receiver capable of varying the RX wavelength and an optical transmitter capable of varying the TX wavelength. The optical TX/RX device detects RX wavelengths not in use via the optical receiver, and assigns the RX wavelength of the optical receiver to one of the RX wavelengths not-in-use, and assigns the TX wavelength of the optical transmitter to a TX wavelength corresponding to the RX wavelength according to a correspondence table of TX and RX wavelengths in the memory. Then, the optical TX/RX device transmits a signal light on this TX wavelength, and detects the response on the RX wavelength. If the response is detected, communication is initiated using the assigned TX wavelength and the RX wavelength. If the response is not detected, the operation is repeated from the detection of RX wavelengths not in use to the transmission of the signal light on TX wavelength again.

摘要翻译： 根据本发明，可以在不使用监视光的情况下提供使用能够分配波长的光TX / RX装置的星型波长复用通信网。 在本发明的实施例中，用于发送和接收波分复用信号光的光TX / RX装置包括能够改变RX波长的光接收机和能够改变TX波长的光发射机。 光学TX / RX设备通过光接收器检测未使用的RX波长，并将光接收机的RX波长分配给不使用的RX波长之一，并将光发射机的TX波长分配给TX 根据存储器中的TX和RX波长的对应表，对应于RX波长的波长。 然后，光TX / RX设备在该TX波长上发送信号光，并检测RX波长的响应。 如果检测到响应，则使用分配的TX波长和RX波长启动通信。 如果没有检测到响应，则从检测不使用的RX波长再次发送TX波长的信号光，重复该操作。

公开(公告)号：US07206510B2

公开(公告)日：2007-04-17

申请号：US10266905

申请日：2002-10-08

申请人： Hiroo Suzuki ,  Masamichi Fujiwara ,  Mitsuhiro Teshima ,  Koji Akimoto ,  Shingo Kawai ,  Jun-ichi Kani ,  Noboru Takachio ,  Katsumi Iwatsuki

发明人： Hiroo Suzuki ,  Masamichi Fujiwara ,  Mitsuhiro Teshima ,  Koji Akimoto ,  Shingo Kawai ,  Jun-ichi Kani ,  Noboru Takachio ,  Katsumi Iwatsuki

IPC分类号： H04B10/20 ,  G02F1/00

CPC分类号： H04J14/02

摘要： A first optical fiber transmission path is used to transmit continuous-wave light for upstream signal light from the center node to each of the remote nodes, while a second optical fiber transmission path is used to transmit downstream signal light from the center node to each remote node and to transmit upstream signal light (obtained by modulating continuous-wave light) from each remote node to the center node. In this network, specific wavelength bandwidths are allocated to each remote node for the continuous-wave lights (for upstream signal lights) and the downstream signal lights, and the wavelength bandwidths for the continuous-wave lights (for upstream signal lights) and the downstream signal lights are alternately set.

摘要翻译： 第一光纤传输路径用于将用于上行信号光的连续波光从中心节点传输到每个远程节点，而第二光纤传输路径用于将来自中心节点的下行信号光传输到每个远程节点 并且将从每个远程节点发送的上行信号光（通过调制连续波光获得）发送到中心节点。 在该网络中，针对连续波灯（用于上行信号灯）和下行信号灯以及连续波光（用于上行信号灯）和下游的波长带宽，分配给每个远程节点的特定波长带宽 信号灯交替设定。

公开(公告)号：US20060062576A1

公开(公告)日：2006-03-23

申请号：US10535526

申请日：2004-05-28

申请人： Hirotaka Nakamura ,  Junichi Kani ,  Hiroo Suzuki ,  Mitsuhiro Teshima ,  Ukyo Yamaguchi ,  Hidetaka Onishi ,  Katsumi Iwatsuki

发明人： Hirotaka Nakamura ,  Junichi Kani ,  Hiroo Suzuki ,  Mitsuhiro Teshima ,  Ukyo Yamaguchi ,  Hidetaka Onishi ,  Katsumi Iwatsuki

IPC分类号： H04J14/00

CPC分类号： H04J14/0294 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04J14/0283

摘要： A dual structure for a multiplexing section extended to an OSU is obtained without adding a dynamic function, such as an optical switch, to a W-MULDEM. The W-MULDEM of an optical wavelength division multiplexing access system divides, among ports corresponding to the individual ONUs, downstream optical signals having wavelengths λd1 to λdn, which are received along a current-use optical fiber, or downstream optical signals having wavelengths λd1+Δλ to λdn+Δλ, which are received along a redundant optical fiber. The W-MULDEM also multiplexes, for the port that corresponds to the current-use optical fiber or the redundant optical fiber, upstream optical signals having wavelengths λu1 to λun or wavelengths λu1+Δλ to λun+Δλ, which are received along optical fibers corresponding to the ONUs. A wavelength difference between the downstream optical signal and the upstream optical signal that are consonant with each ONU is defined as an integer times the FSR of an AWG.

摘要翻译： 获得扩展到OSU的复用部分的双重结构，而不向诸如光开关的动态功能添加到W-MULDEM。 光波分复用接入系统的W-MULDEM在对应于各个ONU的端口中，沿着当前使用的光纤接收波长为lambdad1至lambdadn的下行光信号，或者具有波长lambdad1 + Deltalambda到lambdadn + Deltalambda，沿冗余光纤接收。 对于与当前使用的光纤或冗余光纤对应的端口，W-MULDEM还将具有波长lambdau1至lambdaun或波长lambdau1 + Deltalambda的上行光信号复用到λun+ Deltalambda，沿着光纤对应接收 到ONU。 与每个ONU相关联的下行光信号和上行光信号之间的波长差定义为AWG的FSR的整数倍。

公开(公告)号：US07555215B2

公开(公告)日：2009-06-30

申请号：US10535526

申请日：2004-05-28

申请人： Hirotaka Nakamura ,  Junichi Kani ,  Hiroo Suzuki ,  Mitsuhiro Teshima ,  Ukyo Yamaguchi ,  Hidetaka Onishi ,  Katsumi Iwatsuki

发明人： Hirotaka Nakamura ,  Junichi Kani ,  Hiroo Suzuki ,  Mitsuhiro Teshima ,  Ukyo Yamaguchi ,  Hidetaka Onishi ,  Katsumi Iwatsuki

IPC分类号： H04J14/00 ,  H04B10/08

CPC分类号： H04J14/0294 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04J14/0283

摘要： A dual structure for a multiplexing section extended to an OSU is obtained without adding a dynamic function, such as an optical switch, to a W-MULDEM. The W-MULDEM of an optical wavelength division multiplexing access system divides, among ports corresponding to the individual ONUs, downstream optical signals having wavelengths λd1 to λdn, which are received along a current-use optical fiber, or downstream optical signals having wavelengths λd1+Δλ to λdn+Δλ, which are received along a redundant optical fiber. The W-MULDEM also multiplexes, for the port that corresponds to the current-use optical fiber or the redundant optical fiber, upstream optical signals having wavelengths λu1 to λun or wavelengths λu1+Δλ to λun+Δλ, which are received along optical fibers corresponding to the ONUs. A wavelength difference between the downstream optical signal and the upstream optical signal that are consonant with each ONU is defined as an integer times the FSR of an AWG.

摘要翻译： 获得扩展到OSU的复用部分的双重结构，而不向诸如光开关的动态功能添加到W-MULDEM。 光波分复用接入系统的W-MULDEM在对应于各个ONU的端口中，沿着当前使用的光纤接收波长为lambdad1至lambdadn的下行光信号，或者具有波长lambdad1 + Deltalambda到lambdadn + Deltalambda，沿冗余光纤接收。 对于与当前使用的光纤或冗余光纤对应的端口，W-MULDEM还将具有波长lambdau1至lambdaun或波长lambdau1 + Deltalambda的上行光信号复用到λun+ Deltalambda，沿着光纤对应接收 到ONU。 与每个ONU相关联的下行光信号和上行光信号之间的波长差定义为AWG的FSR的整数倍。

公开(公告)号：US07127168B2

公开(公告)日：2006-10-24

申请号：US10163849

申请日：2002-06-05

申请人： Jun-ichi Kani ,  Katsuhiro Araya ,  Noboru Takachio ,  Koji Akimoto ,  Mitsuhiro Teshima ,  Masamichi Fujiwara ,  Hiroo Suzuki ,  Shingo Kawai ,  Katsumi Iwatsuki

发明人： Jun-ichi Kani ,  Katsuhiro Araya ,  Noboru Takachio ,  Koji Akimoto ,  Mitsuhiro Teshima ,  Masamichi Fujiwara ,  Hiroo Suzuki ,  Shingo Kawai ,  Katsumi Iwatsuki

IPC分类号： H04B10/00

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0297

摘要： Multi-wavelength light having a frequency band equal to or greater than the FSR of an AWG is demultiplexed into individual wavelength channels, and power level deviations between wavelength channels are suppressed. An optical demultiplexer includes a wavelength-group demultiplexer that demultiplexes multi-wavelength light into wavelength groups formed from wavelength channels, and channel demultiplexers that demultiplex each wavelength group into wavelength channels light. An optical multiplexer includes channel multiplexers that multiplex modulated signal light of each wavelength channel for each wavelength group, and a wavelength-group multiplexer that multiplexes, for each wavelength group, WDM signal light output from the channel multiplexers. The FSR of the wavelength-group multiplexer/demultiplexer is set to be equal to or greater than the frequency band of the multi-wavelength light. The channel multiplexer/demultiplexer is an AWG in which the FSR is approximately the full width at half maximum of the transmission characteristics of each port of the wavelength-group multiplexer/demultiplexer.

公开(公告)号：US20090161708A1

公开(公告)日：2009-06-25

申请号：US11568109

申请日：2006-02-02

申请人： Shingo Kawai ,  Kiyoshi Matsumoto ,  Hideo Kawata ,  Naoto Yoshimoto ,  Katsumi Iwatsuki

发明人： Shingo Kawai ,  Kiyoshi Matsumoto ,  Hideo Kawata ,  Naoto Yoshimoto ,  Katsumi Iwatsuki

IPC分类号： H01S3/13 ,  H01S3/04

CPC分类号： H01S5/0687 ,  H01S5/0617 ,  H01S5/06804 ,  H01S5/0683

摘要： In the present invention, the extremely complicated setting and control and an extremely expensive optical component (wavelength locker) are not required, and optical output wavelength and optical output power can simply be set and controlled at a moderate price. At least one value for determining a dependence of the optical output wavelength on drive current and device temperature and at least one value for determining a dependence of the optical output power on drive current and device temperature in a light emitting device constituting first means 1 for emitting light are stored in fourth means 4. Fifth means 5 determines drive current or optical output power c and device temperature d, at which both the optical output wavelength and optical output power of the light emitting device are separately specified value b, from a relationship among the drive current, device temperature, and optical output wavelength of the light emitting device, the relationship being determined by the at least one value, and a relationship among the drive current, device temperature, and optical output power, the relationship being determined by the at least one value, and the fifth means 5 gives the drive current or optical output power c and device temperature d as target values to second means 2 and third means 3.

摘要翻译： 在本发明中，不需要非常复杂的设置和控制以及极其昂贵的光学部件（波长锁定器），并且可以以适中的价格简单地设置和控制光输出波长和光输出功率。 用于确定光输出波长对驱动电流和器件温度的依赖性的至少一个值和用于确定构成用于发射的第一装置1的发光器件中的光输出功率对驱动电流和器件温度的依赖性的至少一个值 光存储在第四装置4中。第五装置5确定驱动电流或光输出功率c和器件温度d，其中发光器件的光输出波长和光输出功率两者分别指定值b， 所述驱动电流，器件温度和所述发光器件的光输出波长，所述关系由所述至少一个值确定，以及所述驱动电流，器件温度和光输出功率之间的关系，所述关系由 至少一个值，第五装置5给出驱动电流或光输出功率c和器件温度d 作为第二装置2和第三装置3的目标值。

公开(公告)号：US07336414B2

公开(公告)日：2008-02-26

申请号：US10534310

申请日：2004-06-16

申请人： Masamichi Fujiwara ,  Junichi Kani ,  Koji Akimoto ,  Katsumi Iwatsuki

发明人： Masamichi Fujiwara ,  Junichi Kani ,  Koji Akimoto ,  Katsumi Iwatsuki

IPC分类号： H01S3/00

CPC分类号： H04B10/2587 ,  H04B10/2971 ,  H04B2210/258 ,  H04J14/02

摘要： An optical modulation apparatus is provided which implements a stable amplifying function by reducing the effect of reflected light rays form end faces of a bidirectional optical amplifier by imposing a numerical limitation on the relationship between the gain of the bidirectional optical amplifier and the loss of the optical modulator, or by inserting a polarization rotation section in a reflection type optical modulator including the bidirectional optical amplifier or in a multi-wavelength collective optical modulation system combining the multiple optical modulators. An optical modulation apparatus is provided which implements a stable amplifying function and cost reduction by reducing the effect of reflected light rays by interposing optical isolators at every alternate SOAs in a transmission-type optical modulation apparatus including a plurality of semiconductor optical amplifiers (SOAs) connected in a multistage fashion.

摘要翻译： 提供一种光调制装置，其通过对双向光放大器的增益与光学损耗之间的关系施加数值限制来减小由双向光放大器的端面反射的反射光的影响来实现稳定的放大功能 或者通过在包括双向光放大器的反射型光调制器中插入偏振旋转部分，或者在组合多个光调制器的多波长集合光调制系统中。 提供了一种光调制装置，其通过在包括连接的多个半导体光放大器（SOA）的透射型光调制装置中的每个替代的SOA处插入光隔离器来减小反射光线的影响，从而实现了稳定的放大功能和成本降低 以多层次的方式。

公开(公告)号：US07076166B2

公开(公告)日：2006-07-11

申请号：US10212389

申请日：2002-08-05

申请人： Masaru Fuse ,  Toru Shiozaki ,  Yoshikazu Ishii ,  Hiroaki Asano ,  Kuniaki Utsumi ,  Katsumi Iwatsuki ,  Hitoshi Uematsu ,  Shigeru Kuwano ,  Mitsuhiro Teshima

发明人： Masaru Fuse ,  Toru Shiozaki ,  Yoshikazu Ishii ,  Hiroaki Asano ,  Kuniaki Utsumi ,  Katsumi Iwatsuki ,  Hitoshi Uematsu ,  Shigeru Kuwano ,  Mitsuhiro Teshima

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0226 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04L7/0008 ,  H04L7/0075

摘要： This invention discloses an optical burst transmission system in which an optical generator generates Type 1 lightwaves having different wavelengths corresponding to transmission lines and having undergone intensity modulation with obtained data; a broad spectrum optical generator generates, by incorporating Type 2 lightwaves, a Type 3 lightwave using a fewer light emitting devices than the number of the Type 1 lightwaves, each Type 2 lightwaves having a corresponding wavelength apart from Type 1 lightwave's wavelength with an FSR interval and having undergone the intensity modulation with clock signals; an optical multiplexer multiplexes the Type 1 and Type 3 lightwaves to output the combination to each transmission line; and an optical routing unit extracts, from the combination, pairs of one Type 1 lightwave and one Type 2 lightwave having the corresponding wavelength, and guides pairs to each transmission line corresponding to the Type 1 lightwave's wavelength in each pair.

公开(公告)号：US20050213991A1

公开(公告)日：2005-09-29

申请号：US11132937

申请日：2005-05-19

申请人： Masamichi Fujiwara ,  Mitsuhiro Teshima ,  Noboru Takachio ,  Katsumi Iwatsuki

发明人： Masamichi Fujiwara ,  Mitsuhiro Teshima ,  Noboru Takachio ,  Katsumi Iwatsuki

IPC分类号： G02F1/01 ,  H04B10/2507 ,  H04B10/532 ,  H04B10/04

CPC分类号： H04B10/2572 ,  G02F1/0136 ,  G02F2001/0139 ,  H04B10/532

摘要： To generate light with the degree of polarization zeroed and the spread of an optical spectrum suppressed even with temporal overlapping between optical pulses each of which is polarized orthogonally to the succeeding pulse, a polarization scrambler includes an optical pulse generator that generates optical pulses with an intensity waveform repetition T/2 and an electrical field repetition period T in which the same intensity waveform is repeated every repetition period T/2 and in which phase is inverted every repetition period T/2, and an orthogonal polarization delay unit which receives each of the optical pulses, separates the optical pulse into two optical pulses with orthogonal states of polarization, and relatively shifts the temporal position of one of the two optical pulses from that of the other optical pulse by (2n−1)T/4 (n is a natural number) to generate light in which each pulse is polarized orthogonally to a succeeding pulse.

摘要翻译： 为了产生具有归零度的光，并且即使光学脉冲之间的时间重叠也抑制光谱的扩展，每个光脉冲与后续脉冲正交地极化，偏振加扰器包括产生具有强度的光脉冲的光脉冲发生器 波形重复T / 2和电场重复周期T，其中每个重复周期T / 2重复相同的强度波形，并且每个重复周期T / 2对相位进行反相，并且正交偏振延迟单元接收每个 光脉冲将光脉冲分离成具有正交偏振态的两个光脉冲，并将两个光脉冲之一的时间位置从另一个光脉冲的时间位置相对移位（2n-1）T / 4（n为 自然数）以产生其中每个脉冲与后续脉冲正交极化的光。