公开(公告)号：US07266300B2

公开(公告)日：2007-09-04

申请号：US10458171

申请日：2003-06-10

申请人： Sung-Kee Kim ,  Young-Hun Joo ,  Seong-Taek Hwang

发明人： Sung-Kee Kim ,  Young-Hun Joo ,  Seong-Taek Hwang

IPC分类号： H04J14/02

CPC分类号： H04J14/0216 ,  H04B10/2971 ,  H04J14/02 ,  H04J14/0208 ,  H04J14/0227

摘要： A bi-directional path switched ring optical transmission node has simple configuration which reduces the influence of a wave reflected by an obstacle on optical line.The BPSR optical transmission node connects to a first optical line through which an odd channel signal and an even channel signal are transmitted to and from the BPSR optical transmission node in direction opposite to each other. The BPSR optical transmission node further connects to a second optical line through which the odd channel signal and the even channel signal are transmitted from and to the BPSR optical transmission node in direction opposite to each other. The BPSR optical transmission n-ode includes a node section for directing the odd channel signal and the even channel signal, dropping/adding a desired channel from/to the odd channel signal and the even channel signal,and then allowing each of the odd channel signal and the even channel signal to proceed in a direction traveled by that channel signal upon arriving at the BPSR optical transmission node; and filtering section coupled between the node section and respective optical lines, the filtering section allowing only one of the odd channel signal and the even channel signal to pass without attenuating the signal.

摘要翻译： 双向路径交换环形光传输节点具有简单的配置，减少了由障碍物反射的波对光线路的影响.BPSR光传输节点连接到第一光线路，奇数信道信号和偶信道信号 在彼此相反的方向上被传送到BPSR光传输节点。 BPSR光传输节点进一步连接到第二光线路，通过该第二光线路，奇数信道信号和偶信道信号以彼此相反的方向从BPSR光传输节点传送到BPSR光传输节点。 BPSR光传输n-ode包括用于引导奇信道信号和偶信道信号的节点部分，从奇信道信号和偶信道信号中丢弃/添加所需信道，然后允许奇信道 信号和偶数信道信号在到达BPSR光传输节点时沿着该信道信号行进的方向进行; 以及耦合在所述节点部分和各个光线路之间的滤波部分，所述滤波部分仅允许奇数信道信号和偶数信道信号中的一个通过而不衰减所述信号。

公开(公告)号：US20070127113A1

公开(公告)日：2007-06-07

申请号：US11674576

申请日：2007-02-13

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 from 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降低来自双向光放大器的端面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式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：US07024117B1

公开(公告)日：2006-04-04

申请号：US09555295

申请日：1998-11-06

申请人： Erich Gottwald

发明人： Erich Gottwald

IPC分类号： H04J14/02 ,  H04B10/12

CPC分类号： H04B10/2971 ,  H01S3/302 ,  H04B10/2916

摘要： Pump energy with a wavelength which is below the wavelength of an optical signal is fed into a transmission section from a pump laser via a coupler. The received optical signal is attenuated with increasing pump power with signals having higher frequencies being more strongly damped.

摘要翻译： 具有低于光信号波长的波长的泵浦能量通过耦合器被馈送到来自泵浦激光器的透射部分。 接收到的光信号随着泵浦功率的增加而衰减，而具有较高频率的信号被更强阻尼。

公开(公告)号：US20040042067A1

公开(公告)日：2004-03-04

申请号：US10454712

申请日：2003-06-03

发明人： Michael H. Eiselt

IPC分类号： H01S003/00

CPC分类号： H04B10/2971 ,  H04B10/2916

摘要： The invention pertains to optical fiber transmission systems, and is particularly relevant to optical transport systems employing optical amplifiers. In particular the invention teaches an apparatus and method that allows cost effective co-directional operation of an optical amplifier to support full duplex traffic.

摘要翻译： 本发明涉及光纤传输系统，并且与使用光放大器的光传输系统特别相关。 具体地，本发明教导了一种允许光放大器的成本有效的同向操作来支持全双工业务的装置和方法。

公开(公告)号：US20030215239A1

公开(公告)日：2003-11-20

申请号：US10391672

申请日：2003-03-19

发明人： Young-Hoon Joo ,  Seong-Taek Hwang ,  Lae-Kyoung Kim ,  Gyu-Woong Lee

IPC分类号： H04J014/02

CPC分类号： H04B10/2971 ,  H04B2210/256 ,  H04J14/0208 ,  H04J14/0213 ,  H04J14/0216

摘要： A bi-directional optical add/drop multiplexer is provided comprising a first interleaver for outputting to a second end a forward optical signal that has been inputted through a first end connected to the optical fiber, and a backward optical signal to a second end that has been inputted through a third end; a second interleaver for interleaving the forward optical signal inputted through a first end and the backward optical signal inputted through a second end by wavelengths, and outputting the interleaved signal through a third end; an optical add/drop multiplexing unit for adding a selected channel to the interleaved optical signal or dropping a selected channel from the interleaved optical signal; a third interleaver for outputting a backward optical signal among the channel-modified optical signals inputted through a second end to the third end of the first interleaver through a first end, and a forward optical signal through a third end; and a fourth interleaver for outputting a backward optical signal inputted through a second end connected to an optical fiber to the second end of the second interleaver through a first end, and the forward optical signal inputted from the third interleaver to the second end.

摘要翻译： 提供一种双向光分插复用器，包括：第一交织器，用于向第二端输出通过连​​接到光纤的第一端输入的正向光信号;以及反向光信号， 通过第三端输入; 第二交织器，用于交织通过第一端输入的正向光信号和通过第二端输入的反向光信号，并通过第三端输出交错信号; 光分插复用单元，用于将所选择的信道添加到交织的光信号或从所交织的光信号中丢弃所选择的信道; 第三交织器，用于经由第一端在第一交织器的第二端输入的信道修改的光信号中输出反向光信号，以及通过第三端输出正向光信号; 以及第四交织器，用于通过第一端将通过连接到光纤的第二端输入的反向光信号输出到第二交织器的第二端，以及从第三交织器输入到第二端的正向光信号。

公开(公告)号：US06616351B1

公开(公告)日：2003-09-09

申请号：US09417222

申请日：1999-10-13

申请人： Jin Hwan Jang

发明人： Jin Hwan Jang

IPC分类号： H04J1402

CPC分类号： H04B10/2971 ,  H04J14/0221

摘要： A bidirectional optical amplifying apparatus-and method of controlling the optical gain in a bidirectional WDM optical communication network includes a bidirectional optical amplifier for amplifying a forward WDM optical input signal and a reverse WDM optical input signal, a measurement means for measuring the total input intensity and the total output intensity of the bidirectional optical amplifier,and a control means for measuring a gain using the total input intensity and the total output intensity, compensating the error between the measured gain and a reference gain, and feedback controlling the bidirectional optical amplifier to uniformly maintain the gain. The measurement means divides a forward optical input signal and a reverse optical input signal, in a constant ratio, respectively, converts the divided optical signal to an electrical signal, and measures total input intensity. The measurement means divides a forward optical output signal and a reverse optical output signal, in a constant ratio, respectively, converts the divided optical signal to an electrical signal, and measures the total output intensity. The control means controls the optical output of a pump laser using the error signal. Accordingly, if a WDM channel is branched or coupled from the optical communication network, the optical gain and gain flatness can be maintained uniformly by measuring the total input and the total output of the bidirectional optical amplifier and automatically controlling the gain, even if the optical input level increases or decreases.

摘要翻译： 一种双向光放大装置 - 在双向WDM光通信网络中控制光增益的方法包括用于放大正向WDM光输入信号和反向WDM光输入信号的双向光放大器，用于测量总输入强度的测量装置 和双向光放大器的总输出强度，以及控制装置，用于使用总输入强度和总输出强度来测量增益，补偿所测量的增益和参考增益之间的误差，以及控制双向光放大器的反馈 均匀地保持增益。 测量装置分别以恒定比例分割正向光输入信号和反向光输入信号，将划分的光信号转换为电信号，并测量总输入强度。 测量装置分别将正向光输出信号和反向光输出信号以恒定比例分频，将分割的光信号转换为电信号，并测量总输出强度。 控制装置使用误差信号来控制泵浦激光器的光输出。 因此，如果WDM信道从光通信网络分支或耦合，则通过测量双向光放大器的总输入和总输出并且自动控制增益，即使光学增益和增益平坦度也可以均匀地保持 输入电平增加或减少。

公开(公告)号：US20020080474A1

公开(公告)日：2002-06-27

申请号：US10029237

申请日：2001-12-28

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Yasutake Ohishi ,  Atsushi Mori ,  Makoto Yamada ,  Hirotaka Ono ,  Terutoshi Kanamori ,  Toshiyuki Shimada

IPC分类号： H01S003/00 ,  H04B010/12

CPC分类号： G02B6/3803 ,  C03C3/122 ,  C03C4/0071 ,  C03C13/048 ,  G02B6/255 ,  G02B6/3636 ,  G02B6/3652 ,  G02B6/3806 ,  G02B6/3818 ,  G02B6/382 ,  G02B6/3822 ,  G02B6/3838 ,  G02B6/3861 ,  H01S3/06708 ,  H01S3/06716 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/06787 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/177 ,  H01S3/2375 ,  H04B10/2971

摘要： A tellurite glass as a glass material of optical fiber and optical waveguide has a composition of 0

摘要翻译： 作为光纤和光波导的玻璃材料的白云石玻璃的组成为0

公开(公告)号：US06400475B1

公开(公告)日：2002-06-04

申请号：US09191051

申请日：1998-11-12

申请人： Junya Kosaka ,  Takayuki Suzuki

发明人： Junya Kosaka ,  Takayuki Suzuki

IPC分类号： H04B1008

CPC分类号： H04B10/2971 ,  H04B10/0775 ,  H04B10/0779 ,  H04B10/07955 ,  H04B10/2972 ,  H04B2210/078 ,  H04B2210/258 ,  H04J14/0221

摘要： An optical transmission unit is comprised of an optical power control unit to adjust the optical power, an optical detection unit to detect the power of the optical signal from a transmission medium, an optical control-information generating unit to generate information relating to the size of the detected optical power monitor value, an optical control-information introduction unit to input the generated information into the transmission medium as optical control information, an optical control-information input detection unit to detect optical control information from the transmission medium, and a control unit to regulate the detected information so the optical power from the optical power adjustment device is within a specified value.

摘要翻译： 光传输单元包括用于调整光功率的光功率控制单元，用于检测来自传输介质的光信号的功率的光检测单元，光控制信息产生单元，用于生成与 所检测的光功率监视值，光控制信息引入单元，用于将生成的信息输入到作为光控制信息的传输介质中;光控制信息输入检测单元，用于检测来自传输介质的光控信息;以及控制单元 以调节检测到的信息，使得来自光功率调节装置的光功率在规定值内。

公开(公告)号：US20020051267A1

公开(公告)日：2002-05-02

申请号：US09800891

申请日：2001-03-08

发明人： Kentaro Nakamura ,  Takafumi Terahara ,  Junichi Kumasako ,  Rainer Hainberger

IPC分类号： H04J014/02

CPC分类号： H04B10/2971 ,  H04B10/2503 ,  H04B10/2916

摘要： Different bands (C-band and L-band) are allotted respectively to an upstream optical signal and a downstream optical signal. In a transmission-path optical fiber for Raman amplification, the C-band optical signal is amplified by pumping light from a C-band pumping light source, and the L-band optical signal is amplified by pumping light from an L-band pumping light source. As a result of this configuration, the optical signals are Raman-amplified through backward pumping in both upstream and downstream directions, whereby negative effects, which could be exerted on the optical signals by forward pumping, can be avoided.

摘要翻译： 分别将不同的频带（C波段和L波段）分配给上行光信号和下行光信号。 在用于拉曼放大的传输路径光纤中，C波段光信号通过泵浦来自C波段泵浦光源的光而被放大，并且L波段光信号通过泵浦来自L波段泵浦光的光而被放大 资源。 作为该结构的结果，光信号通过在上下游方向上的反向泵浦而被拉曼放大，由此可以避免通过正向泵浦对光信号施加的负面影响。

公开(公告)号：US06381049B1

公开(公告)日：2002-04-30

申请号：US08990421

申请日：1997-12-15

申请人： David J. Xu ,  Sami T. Hendow

发明人： David J. Xu ,  Sami T. Hendow

IPC分类号： H04B1000

CPC分类号： G02B6/29364 ,  G02B6/266 ,  G02B6/2938 ,  H04B10/2971

摘要： A four-port Wavelength-Division-Multiplexing (WDM) element is disclosed that can be employed for various purposes in optical communication networks, particularly in bi-directional fiber optic lines. In one embodiment, one four-port WDM element is used with one optical amplifier to provide bi-directional propagation on the same fiber. In another embodiment, the four-port element is used in conjunction with optical attenuators to provide for gain equalization of channels and the flexibility to add or remove channels. In yet another embodiment, input and output ports are added to current-art elements thereby enabling bi-directional operation to be achieved with equipment that does not provide such capabilities.

摘要翻译： 公开了四端口波分复用（WDM）元件，其可以用于光通信网络中的各种目的，特别是在双向光纤线路中。 在一个实施例中，一个四端口WDM元件与一个光放大器一起使用以在同一光纤上提供双向传播。 在另一个实施例中，四端口元件与光衰减器一起使用以提供通道的增益均衡以及添加或去除通道的灵活性。 在另一个实施例中，输入和输出端口被添加到当前艺术元件，从而使得能够利用不提供这种能力的设备实现双向操作。