公开(公告)号：EP3017558A1

公开(公告)日：2016-05-11

申请号：EP14842918.6

申请日：2014-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： MEHRVAR, Hamid ,  GOODWILL, Dominic

IPC: H04J14/02 ,  G02B6/293

CPC classification number: H04J14/0212 ,  H04J14/0217 ,  H04L45/62 ,  H04Q11/0005 ,  H04Q2011/0016

Abstract: System and method embodiments are provided for a photonic switch chip for scalable reconfigurable optical add/drop multiplexer (ROADM). The embodiments enable a low-cost pay as you grow ROADM that scales as both the number of wavelengths added or dropped increases and the size of the node in terms of number of directions increase. In an embodiment, a ROADM includes an M degree optical cross-connect tandem component comprising M wavelength selective switch (WSS) coupled to M wavelength division multiplexing (WDM) node interfaces, where M is equal to a number of input or output directions; a routing stage wavelength selector switch (WSS) comprising a plurality of WSSs connected to the tandem component; and an N by M combiner/distributor for add/drop coupled to the routing stage WSS, wherein the combiner/distributor comprises one or more photonic integrated circuit (PIC) chips, and wherein N is a maximum number of add/drop wavelengths.

公开(公告)号：EP2985930A4

公开(公告)日：2016-04-13

申请号：EP13882022

申请日：2013-09-13

Applicant: ZTE CORP

Inventor： HUA FENG ,  SHEN BAILIN

IPC: H04B10/294 ,  H04B10/07 ,  H04B10/079 ,  H04B10/564 ,  H04J14/02 ,  H04L27/01

CPC classification number: H04B10/564 ,  H04B10/07955 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04L27/01

Abstract: Provided are an optical power equalization method and apparatus, which are applied to a flexible grid reconfigurable optical add drop multiplexer (Flex ROADM) system. The optical power equalization method includes: judging, according to an optical power monitoring result and an optical power control target value of an optical channel, whether optical power equalization needs to be performed on the optical channel; and when a judgement result is that the optical power equalization needs to be performed on the optical channel, performing equalization on an optical power of the optical channel and an optical power of each sub-carrier in the optical channel according to the optical power monitoring result. By means of the technical solution, the optical performance of the Flex ROADM system can satisfy the requirements.

公开(公告)号：EP2651061A3

公开(公告)日：2016-04-06

申请号：EP13160837.4

申请日：2013-03-25

Applicant: FUJITSU LIMITED

Inventor： Wang, Xi ,  Kim, Inwoong ,  Palacharla, Paparao ,  Sekiya, Motoyoshi

IPC: H04J14/02

CPC classification number: H04J14/0256 ,  H04J14/0212 ,  H04J14/0257 ,  H04J14/026 ,  H04J14/0298

Abstract: According to an aspect of an embodiment, a method of spectrum defragmentation in an optical network may include assigning an optical signal within an optical network to a first frequency slot that spans a first portion of an optical spectrum of the optical network. The method may also include constructing a frequency slot dependency map based on the assignation of the optical signal to the frequency slot. The method may also include reassigning, as a result of an optical signal departure event, the optical signal to a second frequency slot based on the frequency slot dependency map. The second frequency slot may span a second portion of the optical spectrum of the optical network.

公开(公告)号：EP2052480B1

公开(公告)日：2016-04-06

申请号：EP07796705.7

申请日：2007-07-06

Applicant: Tellabs Operations, Inc.

Inventor： BODUCH, Mark E. ,  PAPAKOS, Kimon ,  BUESCHER, Gilbert A. III

IPC: H04J14/02

CPC classification number: H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0221

公开(公告)号：EP2985930A1

公开(公告)日：2016-02-17

申请号：EP13882022.0

申请日：2013-09-13

Applicant: ZTE Corporation

Inventor： HUA, Feng ,  SHEN, Bailin

IPC: H04B10/294 ,  H04B10/07

CPC classification number: H04B10/564 ,  H04B10/07955 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04L27/01

Abstract: Provided are an optical power equalization method and apparatus, which are applied to a flexible grid reconfigurable optical add drop multiplexer (Flex ROADM) system. The optical power equalization method includes: judging, according to an optical power monitoring result and an optical power control target value of an optical channel, whether optical power equalization needs to be performed on the optical channel; and when a judgement result is that the optical power equalization needs to be performed on the optical channel, performing equalization on an optical power of the optical channel and an optical power of each sub-carrier in the optical channel according to the optical power monitoring result. By means of the technical solution, the optical performance of the Flex ROADM system can satisfy the requirements.

Abstract translation: 提供了一种应用于柔性并网可重构光分插复用器（Flex ROADM）系统的光功率均衡方法及装置。 所述光功率均衡方法包括：根据光功率监测结果和光功率控制目标值判断是否需要对所述光通道进行光功率均衡; 当判断结果为需要对所述光通道进行光功率均衡时，根据所述光功率监测结果对所述光通道中的光通道的光功率和每个子载波的光功率进行均衡处理 。 通过技术方案，Flex ROADM系统的光学性能可以满足要求。

公开(公告)号：EP2979382A1

公开(公告)日：2016-02-03

申请号：EP14711553.9

申请日：2014-03-12

Applicant: British Telecommunications Public Limited Company

Inventor： LORD, Andrew

IPC: H04J14/02 ,  H04Q11/00

CPC classification number: H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/026 ,  H04Q11/0062 ,  H04Q2011/0015 ,  H04Q2011/0052

Abstract: An upgradable optical router for use in an optical switching network. In an initial configuration, the optical router contains wavelength selective switches configured to switch optical signals having WDM wavelengths positioned in a grid having exactly 100 GHz (about 0.8 nm) spacing in optical frequency, aka fixed grid. The interface ports and optical backplane within the optical switch contain an optical splitter and optical coupler and additionally space for a second selective switch. At a later point in time, a second wavelength selective switch can be added to provide additional capabilities such as switching wavelengths positioned in a flexible grid.

公开(公告)号：EP2830238A4

公开(公告)日：2015-11-11

申请号：EP12871896

申请日：2012-03-19

Applicant: FUJITSU LTD

Inventor： KAMURA YUJI ,  NAKAJIMA ICHIRO

IPC: H04B10/00 ,  G02B6/293 ,  G02B6/35 ,  H04B10/07 ,  H04B10/077 ,  H04B10/2513 ,  H04J14/02

CPC classification number: G02B6/29385 ,  G02B6/3588 ,  H04B10/0775 ,  H04B10/25133 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0227 ,  H04J14/0283

公开(公告)号：EP2940904A1

公开(公告)日：2015-11-04

申请号：EP15158994.2

申请日：2015-03-13

Applicant: FUJITSU LIMITED

Inventor： Nakagawa, Goji ,  Oda, Shoichiro

IPC: H04B10/67 ,  H04J14/02

CPC classification number: H04J14/0221 ,  H04B10/675 ,  H04J14/0212 ,  H04J14/0258 ,  H04Q11/0066 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0083

Abstract: A transmission device that receives an optical signal on which a frequency modulated signal is superimposed includes: an optical filter (104) configured to filter the optical signal; a filter controller (113) configured to control a passband of the optical filter based on a change of power of the optical signal; and a signal detection unit (114) configured to detect the frequency modulated signal based on the change of the power of the optical signal filtered by the optical filter. In WDM systems, the invention is intended to optimize the detection of path ID signals which are superimposed by the aforementioned frequency modulation, by appropriately adjusting a tunable optical filter that operates in conjunction with a multistage wavelength selective switch (WSS).

Abstract translation: 接收其上叠加有调制信号的光信号的发送装置包括：滤波器（104），被配置为对所述光信号进行滤波; 滤波器控制器（113），被配置为基于所述光信号的功率的变化来控制所述滤光器的通带; 以及信号检测单元（114），被配置为基于由所述滤光器滤波的光信号的功率的变化来检测所述调频信号。 在WDM系统中，本发明旨在通过适当调整与多级波长选择开关（WSS）结合操作的可调光滤波器来优化通过上述频率调制叠加的路径ID信号的检测。

公开(公告)号：EP1944894A3

公开(公告)日：2015-10-28

申请号：EP07023032.1

申请日：2007-11-28

Applicant: FUJITSU LIMITED

Inventor： Tanaka, Toshiki ,  Nakashima, Hisao ,  Hoshida, Takeshi ,  Katagiri, Toru ,  Ooi, Hiroki ,  Miura, Akira

IPC: H04J14/02 ,  H04B10/155 ,  H04B10/18

CPC classification number: H04J14/0286 ,  H04B10/2557 ,  H04B10/516 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0283

Abstract: An optical transmitter is provided for transmitting a wavelength multiplexed signal comprising an intensity modulation optical signal and a phase modulation optical signal through a transmission line. The optical transmitter includes a bit time difference given signal generator (11, 12) for generating at least two optical signals having a bit time difference therebetween, from the wavelength multiplexed signal. The optical transmitter further includes a wavelength multiplexed signal output unit (13) to which at least two optical signals are input from the bit time difference given signal generator (11, 12), and which generates and outputs a wavelength multiplexed signal in which the bit time difference was given between the phase modulation optical signal and the phase modulation optical signal.

公开(公告)号：EP2919404A1

公开(公告)日：2015-09-16

申请号：EP14305343.7

申请日：2014-03-10

Applicant: ALCATEL LUCENT

Inventor： Charlet, Gabriel ,  Rios Muller, Rafael

IPC: H04J14/02

CPC classification number: H04J14/0208 ,  H04J14/0212 ,  H04J14/0221

Abstract: The present document relates to an optical multiplexing system (500a) comprising:
- a first multiplexer (510) comprising a first input (511) for receiving a first optical channel set comprising one or more optical channels of an optical channel grid;
- a second multiplexer (520) comprising a first input (521) for receiving a second optical channel set comprising one or more optical channels of the optical channel grid; and
- an optical coupler (530) for transmitting the first and second channel sets via a common optical transmission path (540), the inputs (531) of the optical coupler (530) coupled with the outputs (512, 522) of the first and second multiplexers (510, 520),

wherein
- one channel of the first optical channel set and one channel of the second optical channel set are adjacent channels of the optical channel grid;
- the first multiplexer (510) comprises a first filter unit having a first filter function for filtering the optical signals of one or more optical channels received at the first input (511) of the first multiplexer (510);
- the second multiplexer (520) comprises a second filter unit having a second filter function for filtering the optical signals of one or more optical channels received at the first input (521) of the second multiplexer (520); and
- the bandwidths of the first and second filter functions overlap.

Abstract translation: 本发明涉及一种光复用系统（500a），包括： - 第一多路复用器（510），包括用于接收包括光信道格栅的一个或多个光信道的第一光通道组的第一输入端（511） - 第二多路复用器（520），包括用于接收包括所述光通道网格的一个或多个光通道的第二光通道组的第一输入端（521） 以及 - 用于经由公共光传输路径（540）传输所述第一和第二信道集合的光耦合器（530），所述光耦合器（530）的输入（531）与所述第一和第二信道集合的输出（512,522） 和第二多路复用器（510,520），其中 - 所述第一光通道组的一个通道和所述第二光通道组的一个通道是所述光通道栅格的相邻通道; - 第一多路复用器（510）包括具有第一滤波器功能的第一滤波器单元，用于对在第一多路复用器（510）的第一输入端（511）处接收的一个或多个光信道的光信号进行滤波; - 第二多路复用器（520）包括具有第二滤波器功能的第二滤波器单元，用于对在第二多路复用器（520）的第一输入端（521）处接收的一个或多个光信道的光信号进行滤波; 以及 - 第一和第二滤波器功能的带宽重叠。