公开(公告)号：US20040234267A1

公开(公告)日：2004-11-25

申请号：US10829611

申请日：2004-04-22

申请人： National Taiwan Normal University

发明人： Shyh-Lin Tsao ,  Chang-Hung Tien ,  Chun-Wei Tsai

IPC分类号： H04J014/02

CPC分类号： H04J14/0212 ,  H04J14/0219

摘要： A tunable optical add-drop multiplexer (OADM) based on an SOI (silicon-on-insulator) wafer is disclosed. The tunable OADM includes a multimode interference region, at least a grating formed on the multimode interference region, and at least two electrodes formed on two sides of the multimode interference region and having carriers induced thereinto, thereby a variation of an optical waveguide in the grating is controlled through controlling the carriers induced into the electrodes so as to further control different propagation of wavelength signals.

摘要翻译： 公开了一种基于SOI（绝缘体上硅）晶圆的可调谐光分插复用器（OADM）。 可调谐OADM包括多模干涉区域，至少形成在多模干涉区域上的光栅，以及形成在多模干涉区域的两侧上并且具有引导到其中的载流子的至少两个电极，由此光栅中的光波导的变化 通过控制感应到电极中的载流子进行控制，以进一步控制波长信号的不同传播。

公开(公告)号：US20040234266A1

公开(公告)日：2004-11-25

申请号：US10717055

申请日：2003-11-19

发明人： Sung-Tae Kim ,  Seong-Taek Hwang ,  Young-Seok Kim

IPC分类号： H04J014/02

CPC分类号： H04J14/0216 ,  H04J14/0212

摘要： An add/drop module is disclosed including a first circulator having first through third ports that are connected to an external optical fiber, the first circulator outputting an optical signal, input to the first port, to the second portand outputting an optical signal, input to the second port, to the third port, an optical multiplexer/demultiplexer having a multiplexing port connected to the second port of the first circulator, and adapted to provide a passage for the optical signal, and a plurality of demultiplexing ports respectively adapted to provide passages for demultiplexed channels associated therewith, and a plurality of add/drop units. Each add/drop unit includes a second circulator having first through third ports, a second port thereof being connected to an associated one of the demultiplexing ports, and an optical switch having first through fourth ports. The first port being connected to the third port of the second circulator, and at the third port to the first port of the second circulator, the first port of the optical switch being selectively connected with or the third port of the optical switch to establish a path for a channel to be passed or with the fourth port of the optical switch to establish a path for a channel to be dropped, the second port of the optical switch being selectively connected with the third port of the optical switch to establish a path for a channel to be added.

摘要翻译： 公开了一种包括具有连接到外部光纤的第一到第三端口的第一循环器的第一循环器，所述第一循环器将输入到第一端口的光信号输出到第二端口并输出光信号，输入到 所述第二端口到所述第三端口，具有连接到所述第一循环器的第二端口的多路复用端口并且适于为所述光信号提供通道的光复用器/解复用器，以及多个解复用端口，分别适于提供通道 用于与其相关联的解复用信道，以及多个添加/分出单元。 每个添加/分出单元包括具有第一至第三端口的第二循环器，其第二端口连接到相关联的解复用端口之一，以及具有第一至第四端口的光开关。 第一端口连接到第二环行器的第三端口，并且在第三端口处连接到第二环行器的第一端口，光开关的第一端口选择性地与光开关的第三端口连接，以建立 用于要通过的信道的路径或与光开关的第四端口建立用于信道被丢弃的路径，光开关的第二端口选择性地与光开关的第三端口连接，以建立用于 要添加的频道

公开(公告)号：US20040228631A1

公开(公告)日：2004-11-18

申请号：US10788035

申请日：2004-02-27

申请人： ECI Telecom Ltd.

发明人： Sharon Mantin ,  Dror Nahumi ,  Sason Sourani ,  Moshe Ben-David ,  Hanna Inbar ,  Aharon Segev

IPC分类号： H04J014/02

CPC分类号： H04J14/0227 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/022 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286 ,  H04J14/0291 ,  H04J14/0294

摘要： Dividing a multiplexed optical signal transmitted along a first transmission path into two portions and diverting one of the two portions to a second transmission path and forwarding the other portion of the multiplexed optical signal along that first transmission path, while the energy of the diverted portion comprises the entire spectrum of the multiplexed optical signal. Preferably, the diverted first portion is further divided into at least two parts, each comprising a wavelength range substantially different than the others, and at least one of the two parts is forwarded towards an optical receiver.

摘要翻译： 将沿着第一传输路径传输的复用光信号分成两部分，并将两部分中的一个转发到第二传输路径，并且沿着该第一传输路径转发复用的光信号的另一部分，同时转向部分的能量包括 复用光信号的整个频谱。 优选地，转移的第一部分被进一步分成至少两部分，每个部分包括与其他部分基本上不同的波长范围，并且两个部分中的至少一个被转发到光接收器。

公开(公告)号：US20040218926A1

公开(公告)日：2004-11-04

申请号：US10686860

申请日：2003-10-16

发明人： Jong-Kwon Kim ,  Ki-Cheol Lee ,  Jun-Ho Koh ,  Yun-Je Oh

IPC分类号： H04J014/02

CPC分类号： H04J14/0209 ,  H04J14/021

摘要： An optical add/drop multiplexer for adding or dropping a channel to an optical signal. The optical add/drop multiplexer includes a wavelength-division multiplexer to receive and transmit an optical signal, and a plurality of demultiplexing ports, each demultiplexing port is a path for a demultiplexed channel of the optical signal; and a plurality of add/drop multiplexers, wherein respective add/drop multiplexers are connected to respective demultiplexing ports, each of the add/drop multiplexers having a reflector for transmitting or reflecting an input channel, wherein each add/drop multiplexers is configured to add and/or drop a channel to/from from the wavelength-division multiplexer using the reflector.

公开(公告)号：US20040213575A1

公开(公告)日：2004-10-28

申请号：US10305239

申请日：2002-11-27

申请人： NEC Miyagi, Ltd.

发明人： Shiaki Aono

IPC分类号： G02B006/28 ,  H04J014/02

CPC分类号： H04J14/0221 ,  H04B10/296 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0213

摘要： Variations in a peak power level of add signals due to transmission trouble are to be reduced with a relatively inexpensive and simple configuration. When an input of optical signals to an optical amplifier unit is cut off by transmission trouble, only amplified spontaneous emission light is supplied from the optical amplifier unit. An output power constant control unit amplifies this amplified spontaneous emission light to a certain level. This amplification level is substantially equal to what it would be if the input optical signals were inputted into the optical amplifier unit. This makes it possible to restrain variations in a ratio of OADM add signals to be added to OADM through signals in an OADM unit in time of transmission trouble.

摘要翻译： 由于传输故障引起的加法信号的峰值功率电平的变化将以相对便宜且简单的配置进行降低。 当通过传输故障切断对光放大器单元的光信号的输入时，仅从放大器单元提供放大的自发发射光。 输出功率恒定控制单元将该放大的自发发射光放大到一定水平。 该放大电平基本上等于如果输入光信号被输入到光放大器单元中那将是什么。 这使得可以通过OADM单元中的传输故障时的信号来抑制OADM添加信号与OADM的比率的变化。

公开(公告)号：US20040213519A1

公开(公告)日：2004-10-28

申请号：US10028419

申请日：2001-12-21

发明人： Joseph Vanniasinkam ,  Jon Meyer ,  Christopher Viray ,  Bor-Long Twu

IPC分类号： G02B006/34 ,  G02B006/293 ,  H04J014/02

CPC分类号： G02B6/29311 ,  G02B6/2938 ,  G02B6/4214

摘要： A grating based demultiplexer module is described. The module includes an integrally formed first section, second section, and third section. The first section includes a diffraction grating formed on the surface of the first section and directs a WDM beam onto the internal surface of the diffraction grating. The third section is positioned to receive angularly separated light from the external surface of the diffraction grating. In some embodiments, the third section can direct individualy beams of the angularly separated light onto the surface of optical detectors. The third section provides structural support and maintains the alignment between the first section and the third section.

摘要翻译： 描述基于光栅的解复用器模块。 模块包括整体形成的第一部分，第二部分和第三部分。 第一部分包括形成在第一部分的表面上的衍射光栅，并将WDM光束引导到衍射光栅的内表面上。 第三部分定位成从衍射光栅的外表面接收角度分离的光。 在一些实施例中，第三部分可以将角度分离的光的各个光束引导到光学检测器的表面上。 第三部分提供结构支撑，并保持第一部分和第三部分之间的对齐。

公开(公告)号：US20040208622A1

公开(公告)日：2004-10-21

申请号：US10139058

申请日：2002-05-03

申请人： LUCENT TECHNOLOGIES INC.

发明人： Diego Fernando Grosz ,  Stefan Hunsche ,  Gregory Raybon

IPC分类号： H04J014/02 ,  H04B010/00

CPC分类号： H04B10/5165 ,  H04B10/5162

摘要： The invention comprises a method and apparatus for passive optical conditioning and format conversion of RZ optical signals including, but not limited to, conversion from RZ to CRZ or to CSRZ, using a nonlinear device. The invention generates signals that may be optimized to improve transmission performance, receiver performance, and/or spectral efficiency of the optical transmission system. A method for passively generating an optical carrier-suppressed return-to-zero (CSRZ) signal according to the present invention includes, propagating an optical RZ signal through a nonlinear element, the nonlinear element configured to broaden the optical RZ signal such that the optical RZ signal is phase shifted by approximately 3null/2.

摘要翻译： 本发明包括一种用于无源光学调理和RZ光信号的格式转换的方法和装置，包括但不限于使用非线性装置从RZ到CRZ或CSRZ的转换。 本发明产生可被优化以提高光传输系统的传输性能，接收机性能和/或频谱效率的信号。 根据本发明的用于被动地生成光载波抑制归零（CSRZ）信号的方法包括：通过非线性元件传播光学RZ信号，所述非线性元件被配置为扩大光学RZ信号，使得光学 RZ信号相移大约3Pi / 2。

公开(公告)号：US20040208583A1

公开(公告)日：2004-10-21

申请号：US10229623

申请日：2002-08-28

发明人： Kameran Azadet ,  Fadi Ryad Olivier Saibi

IPC分类号： H04J014/02 ,  H04B010/06

CPC分类号： H04B10/505 ,  H04B10/506 ,  H04B10/5165 ,  H04J14/02

摘要： A single-sideband dense wavelength division multiplexing optical communication system and method are disclosed that achieve an increased throughput by moving the carrier wavelengths from the center of the corresponding channel band and suppressing one of the sidebands associated with each channel band. Most of the power is placed in the selected sideband and additional bandwidth is available to increase the throughput within the selected sideband. An electrical signal is modulated to provide a passband signal without low frequency components. The disclosed modulation scheme shifts the carrier wavelengths within the wavelength grid to provide additional bandwidth for the selected sideband in each channel band. Generally, the bandwidth (and thus, throughput) that is available to the selected sideband increases by a factor of two.

摘要翻译： 公开了一种单边带密集波分复用光通信系统和方法，其通过从对应的信道频带的中心移动载波波长并抑制与每个信道频带相关联的一个边带来实现增加的吞吐量。 大多数功率被放置在所选择的边带中，并且附加带宽可用于增加所选边带内的吞吐量。 电信号被调制以提供没有低频分量的通带信号。 所公开的调制方案移动波长网格内的载波波长，以为每个信道频带中的所选边带提供附加带宽。 通常，所选边带可用的带宽（因此，吞吐量）增加一倍。

公开(公告)号：US20040208567A1

公开(公告)日：2004-10-21

申请号：US10125512

申请日：2002-04-19

申请人： FUJITSU LIMITED

发明人： Hisanori Okano ,  Hiroyuki Iwaki ,  Chikashi Hashimoto ,  Tatsuhiko Son ,  Seiji Matsuzaki ,  Megumi Shibata

IPC分类号： H04J014/02

CPC分类号： H04J14/0227 ,  H04J14/0246 ,  H04J14/0279

摘要： An optical wavelength division multiplexing transmission system is disclosed, in which it is possible to establish a new additional line readily, without affecting lines. The optical wavelength division multiplexing transmission system has a plurality of cascaded transmission devices respectively having optical wavelength division multiplexing functions, and each of the plurality of transmission devices includes a management section for managing used and unused wavelengths, and the respective transmission devices located in a section where a new additional line is to be established allocate an unused wavelength to the new additional line, on the basis of the unused wavelength information held by the management sections, thereby ensuring a route going to the target transmission device.

摘要翻译： 公开了一种光波分复用传输系统，其中可以容易地建立新的附加线路，而不影响线路。 光波分复用传输系统具有分别具有光波分复用功能的多个级联传输设备，并且多个传输设备中的每一个包括用于管理使用和未使用的波长的管理部分，以及位于部分中的各个传输设备 其中，要建立新的附加线路，基于由管理部分保持的未使用的波长信息，向新的附加线路分配未使用的波长，从而确保到达目标传输设备的路由。

公开(公告)号：US20040208547A1

公开(公告)日：2004-10-21

申请号：US10020032

申请日：2001-12-14

申请人： Boca Photonics Inc.

发明人： Jose H. Sabat ,  Michael McLaughlin ,  Andre Kauffman ,  Benny Lederman ,  Fabiano Meneses ,  A. M. Kabakcioglu

IPC分类号： H04B010/08 ,  H04J014/02

CPC分类号： H04J14/0295 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0284

摘要： In a communications network, a method and apparatus for providing QoS parameters based protection against network failure scenarios. The invention selectively allocates network resources for protection of a network communication service based on a QoS parameter requirement for the particular network communication service. An alarm provides notification of a failure scenario disrupting network resources interrupting the network communication service. In response to the alarm notification, the system automatically switches a path of the network communication service to make use of the network resources, which have been pre-allocated for protection of the network communication service.

摘要翻译： 在通信网络中，提供了针对网络故障场景的基于QoS参数的保护的方法和装置。 本发明基于对特定网络通信业务的QoS参数要求，有选择地分配用于网络通信业务保护的网络资源。 警报提供通知中断网络通信服务的网络资源的故障情况。 响应告警通知，系统自动切换网络通信业务的路径，利用网络资源预先分配给网络通信业务。