公开(公告)号：US20050047792A1

公开(公告)日：2005-03-03

申请号：US10958277

申请日：2004-10-06

申请人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04B10/2507 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/2543 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  H04B10/12

CPC分类号： H04B10/25137 ,  H04B10/25133 ,  H04B2210/252

摘要： In an optical transmission system comprising a transmitter, a receiver, and a transmission line that connects the transmitter and the receiver, a dispersion compensator is disposed in the receiver. The transmitter comprises an E/O (electro-optical signal converter) and a post-amplifier. An optical signal that has been RZ-coded is supplied to the E/O. The transmitter pre-chirps the optical signal. The pre-chirp is performed by red-chirp of which the value of the chirping parameter a is positive. When the pre-chirp is performed, the non-linear effect of the optical signal on the transmission line can be canceled. In addition, with the RZ coded signal, the inter-symbol interference can be alleviated. Thus, the total dispersion amount of the dispersion compensator can be suppressed. In addition, the power of the optical output can be increased.

摘要翻译： 在包括发射机，接收机和连接发射机和接收机的传输线的光传输系统中，在接收机中设置色散补偿器。 发射机包括E / O（电光信号转换器）和后置放大器。 经RZ编码的光信号被提供给E / O。 发射机预啁啾光信号。 前线啁啾由啁啾线啁啾参数a的值为正的红啁啾执行。 当进行前啁啾时，可以消除光信号在传输线上的非线性效应。 另外，利用RZ编码信号，可以减轻符号间干扰。 因此，可以抑制色散补偿器的总色散量。 另外，可以提高光输出的功率。

公开(公告)号：US06496288B2

公开(公告)日：2002-12-17

申请号：US09922777

申请日：2001-08-07

申请人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04J1400

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572

摘要： The invention provides a wavelength multiplexing transmission apparatus includes a plurality of optical signal outputting sections for outputting optical signals having different wavelengths from each other, and a wavelength multiplexing section for wavelength multiplexing the optical signals outputted from the optical signal outputting sections and sending out a resulting optical signal. Each of the optical signal outputting sections includes a transmission light source driven by an electric signal for outputting an optical signal of a predetermined wavelength, and a wavelength filter capable of passing therethrough and sending out only an optical signal of the predetermined wavelength to be outputted from the transmission light source to prevent a wavelength drift of the optical signal outputted from the transmission light source. A variation of the wavelength of the transmission light source is detected, and the transmission light source is shut down in order to prevent otherwise possible crosstalk with another channel and prevent a further influence of the same.

摘要翻译： 本发明提供了一种波长复用传输装置，包括：多个光信号输出部分，用于输出具有不同波长的光信号;以及波长多路复用部分，用于对从光信号输出部分输出的光信号进行波长多路复用， 光信号。 每个光信号输出部分包括由用于输出预定波长的光信号的电信号驱动的透射光源和能够通过其的波长滤波器，并且仅发送预定波长的光信号以从 传输光源，以防止从传输光源输出的光信号的波长漂移。 检测发送光源的波长的变化，并且关闭发送光源，以防止与另一个信道的可能的串扰，并防止其进一步的影响。

公开(公告)号：US5877881A

公开(公告)日：1999-03-02

申请号：US752516

申请日：1996-11-20

申请人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04B10/2507 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/00

CPC分类号： H04B10/2519 ,  H04B10/25137 ,  H04B2210/252 ,  H04B2210/254

摘要： A chirping parameter .alpha. in a transmitter is set to a positive value with respect to an SMF that has a positive dispersion value with respect to signal light. A dispersion compensator is provided not only at the receiving end but also at the transmitting end. This achieves a reduction in the number of types of dispersion compensators that should be prepared in advance to optimize transmission characteristics despite the variety in the lengths of transmission fibers.

摘要翻译： 发射机中的啁啾参数α被设置为相对于相对于信号光具有正色散值的SMF的正值。 不但在接收端，而且在发送端都提供了色散补偿器。 尽管传输光纤的长度有所不同，但是尽管实现了传输特性的优化，但是其预先准备的色散补偿器的种类数量的减少。

公开(公告)号：US20080002979A1

公开(公告)日：2008-01-03

申请号：US11892302

申请日：2007-08-21

申请人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

发明人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

IPC分类号： H04J14/02

CPC分类号： H04B10/25253 ,  H04B2210/256 ,  H04J14/0206 ,  H04J14/0213

摘要： Dispersion compensation values are set so as to be transmittable to any path groups in a WDM optical communication system having OADM nodes, which includes transmitting-end and receiving-end terminal nodes; a WDM optical communication transmission line including a plurality of spans each having an optical fiber, the plurality of spans joining the transmitting-end and receiving-end terminal nodes; and a plurality of add drop multiplexing (OADM) nodes disposed on the optical communication transmission line; wherein when taking as the reference a residual dispersion target value of between the transmitting-end terminal and receiving-end terminal nodes, a residual dispersion target value for a node segment between one of the terminal nodes and one of the add drop multiplexing (OADM) nodes and a residual dispersion target value for a node-to-node segment between two of the add drop multiplexing (OADM) nodes are set so as to be proportional to ratios of the span counts in the node segment and in the node-to-node segment, respectively, to the total span count between the transmitting-end and receiving-end terminal nodes.

摘要翻译： 色散补偿值被设置为可以发送到具有包括发送端和接收端终端节点的OADM节点的WDM光通信系统中的任何路径组; WDM光通信传输线，其包括多个具有光纤的跨度，所述多个跨接器连接所述发送端和接收端终端节点; 以及设置在所述光通信传输线上的多个添加分集复用（OADM）节点; 其中，当以发送端终端和接收端终端节点之间的残留分散目标值作为参考时，在一个终端节点之间的节点段之间的残留分散目标值和添加分集复用（OADM）之一， 节点和两个添加分集复用（OADM）节点之间的节点到节点分段的残余分散目标值被设置成与节点分段和节点到节点中的跨度计数的比率成比例， 节点段分别为发送端和接收端终端之间的总宽度计数。

公开(公告)号：US07263296B2

公开(公告)日：2007-08-28

申请号：US11508949

申请日：2006-08-24

申请人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04B10/00

CPC分类号： H04B10/25137 ,  H01L31/14 ,  H04B10/2543 ,  H04B2210/252 ,  H04B2210/256

摘要： In a system connecting a transmitter and a receiver using transmission paths and repeaters (in-line amplifiers), red chirping whose α parameter is performed for an optical signal on a transmitting side. Each of the repeaters includes a dispersion-compensator for compensating the amount of dispersion on a preceding transmission path. The amount of dispersion compensation of the dispersion-compensator included in the transmitter is made constant. The dispersion-compensator included in the receiver is arranged in order to compensate the amount of dispersion on a preceding transmission path. A spread of a pulse width on a transmission path can be efficiently compensated by using the compensation capability of the dispersion-compensators and the red chirping on the transmitting side.

摘要翻译： 在使用传输路径和中继器（串联放大器）连接发射机和接收机的系统中，对发射侧的光信号执行其alpha参数为正的红色啁啾。 每个中继器包括用于补偿在先传输路径上的色散量的色散补偿器。 包含在发射机中的色散补偿器的色散补偿量是恒定的。 为了补偿前一个传输路径上的色散量，布置了包含在接收机中的色散补偿器。 通过使用色散补偿器的补偿能力和发送侧的红色啁啾，可以有效地补偿传输路径上的脉冲宽度的扩展。

公开(公告)号：US20070014578A1

公开(公告)日：2007-01-18

申请号：US11523064

申请日：2006-09-19

申请人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04B10/12

CPC分类号： H04B10/25137 ,  H04B10/25133 ,  H04B2210/252

摘要： In an optical transmission system comprising a transmitter, a receiver, and a transmission line that connects the transmitter and the receiver, a dispersion compensator is disposed in the receiver. The transmitter comprises an E/O (electro-optical signal converter) and a post-amplifier. An optical signal that has been RZ-coded is supplied to the E/O. The transmitter pre-chirps the optical signal. The pre-chirp is performed by red-chirp of which the value of the chirping parameter α is positive. When the pre-chirp is performed, the non-linear effect of the optical signal on the transmission line can be canceled. In addition, with the RZ coded signal, the inter-symbol interference can be alleviated. Thus, the total dispersion amount of the dispersion compensator can be suppressed. In addition, the power of the optical output can be increased.

摘要翻译： 在包括发射机，接收机和连接发射机和接收机的传输线的光传输系统中，在接收机中设置色散补偿器。 发射机包括E / O（电光信号转换器）和后置放大器。 经RZ编码的光信号被提供给E / O。 发射机预啁啾光信号。 前线啁啾由啁啾声执行，啁啾参数α的值为正。 当进行前啁啾时，可以消除光信号在传输线上的非线性效应。 另外，利用RZ编码信号，可以减轻符号间干扰。 因此，可以抑制色散补偿器的总色散量。 另外，可以提高光输出的功率。

公开(公告)号：US07068876B1

公开(公告)日：2006-06-27

申请号：US09432112

申请日：1999-11-02

申请人： Takashi Tsuda ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Takashi Tsuda ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： G02B6/28

CPC分类号： H04B10/25133

摘要： An optical fiber transmission line composed of a plurality of segments each having a length falling within a predetermined range is provided. An optical transmitter for supplying an optical signal to the transmission line is provided at one end of the transmission line. An optical receiver for receiving the optical signal from the transmission line is provided at the other end of the transmission line. An optical amplifier is provided between any two adjacent ones of the segments. A dispersion compensator is provided in association with each of the optical transmitter, the optical receiver, and the optical amplifier. The dispersion compensator provides a dispersion selected from a plurality of stepwise varying dispersions determined according to the predetermined range.

摘要翻译： 提供由长度落在预定范围内的多个段组成的光纤传输线。 在传输线的一端设置用于向传输线提供光信号的光发射机。 用于从传输线接收光信号的光接收机设置在传输线的另一端。 在任何两个相邻片段之间提供光放大器。 与每个光发射机，光接收机和光放大器相关联地提供色散补偿器。 色散补偿器提供从根据预定范围确定的多个逐步变化的色散中选出的色散。

公开(公告)号：US06570691B1

公开(公告)日：2003-05-27

申请号：US08929090

申请日：1997-09-15

申请人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04B1000

CPC分类号： H04B10/25137 ,  H01L31/14 ,  H04B10/2543 ,  H04B2210/252 ,  H04B2210/256

摘要： In a system connecting a transmitter and a receiver using transmission paths and repeaters (in-line amplifiers), red chirping whose a parameter is positive is performed for an optical signal on a transmitting side. Each of the repeaters includes a dispersion-compensator for compensating the amount of dispersion on a preceding transmission path. The amount of dispersion compensation of the dispersion-compensator included in the transmitter is made constant. The dispersion-compensator included in the receiver is arranged in order to compensate the amount of dispersion on a preceding transmission path. A spread of a pulse width on a transmission path can be efficiently compensated by using the compensation capability of the dispersion-compensators and the red chirping on the transmitting side.

摘要翻译： 在使用传输路径和中继器（串联放大器）连接发射机和接收机的系统中，对发射侧的光信号执行参数为正的红色啁啾。 每个中继器包括用于补偿在先传输路径上的色散量的色散补偿器。 包含在发射机中的色散补偿器的色散补偿量是恒定的。 为了补偿前一个传输路径上的色散量，布置了包含在接收机中的色散补偿器。 通过使用色散补偿器的补偿能力和发送侧的红色啁啾，可以有效地补偿传输路径上的脉冲宽度的扩展。

公开(公告)号：US6038063A

公开(公告)日：2000-03-14

申请号：US40372

申请日：1998-03-18

申请人： Takashi Tsuda ,  Hiroshi Nishimoto ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Takashi Tsuda ,  Hiroshi Nishimoto ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H01S3/094 ,  H01S3/06 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/13 ,  H01S3/131 ,  H04B10/077 ,  H04B10/079 ,  H04B10/29 ,  H04B10/296 ,  H01S3/00

CPC分类号： H04B10/2931 ,  H01S3/1301 ,  H04B10/2912 ,  H04B10/296 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/10023

摘要： An optical amplifier relates to WDM (wavelength division multiplexing). The optical amplifier includes an optical amplifying unit, an ALC (automatic output level control) circuit for controlling the unit based on the output level thereof, and AGC (automatic gain control) circuit for controlling the unit based on the input and output levels thereof. A selecting circuit alternatively selects and operates the ALC and AGC circuits in accordance with a predetermined rule. Accordingly, the inconvenience occurring in the case of performing only one of ALC and AGC can be eliminated.

摘要翻译： 光放大器涉及WDM（波分复用）​​。 光放大器包括光放大单元，用于基于其输出电平控制单元的ALC（自动输出电平控制）电路和用于基于输入和输出电平来控制该单元的AGC（自动增益控制）电路。 选择电路根据预定规则交替地选择和操作ALC和AGC电路。 因此，可以消除在仅执行ALC和AGC中的一个的情况下发生的不便。

公开(公告)号：US07079771B2

公开(公告)日：2006-07-18

申请号：US10272995

申请日：2002-10-18

申请人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Kazuo Yamane ,  Takashi Tsuda ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04J14/02 ,  H04B10/04 ,  H01S3/00

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572

摘要： The invention provides a wavelength multiplexing transmission apparatus includes a plurality of optical signal outputting sections for outputting optical signals having different wavelengths from each other, and a wavelength multiplexing section for wavelength multiplexing the optical signals outputted from the optical signal outputting sections and sending out a resulting optical signal. Each of the optical signal outputting sections includes a transmission light source driven by an electric signal for outputting an optical signal of a predetermined wavelength, and a wavelength filter capable of passing therethrough and sending out only an optical signal of the predetermined wavelength to be outputted from the transmission light source to prevent a wavelength drift of the optical signal outputted from the transmission light source. A variation of the wavelength of the transmission light source is detected, and the transmission light source is shut down in order to prevent otherwise possible crosstalk with another channel and prevent a further influence of the same.