公开(公告)号：US08929738B2

公开(公告)日：2015-01-06

申请号：US13484115

申请日：2012-05-30

申请人： Stefan Dahlfort ,  Ming Xia

发明人： Stefan Dahlfort ,  Ming Xia

IPC分类号： H04J14/02

CPC分类号： H04J14/0209 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213

摘要： Embodiments herein include a resilient add-drop module for use in one of multiple access subnetwork nodes forming an access subnetwork ring. The module comprises a dual-arm passive optical filter and a cyclic arrayed waveguide grating (AWG). The dual-arm passive optical filter is configured to resiliently drop any wavelength channels within a fixed band uniquely allocated to the access subnetwork node from either arm of the access subnetwork ring and to resiliently add any wavelength channels within the fixed band to both arms of the access subnetwork ring. The cyclic AWG is correspondingly configured to demultiplex wavelength channels dropped by the dual-arm filter and to multiplex wavelength channels to be added by the dual-arm filter. Configured in this way, the module in at least some embodiments advantageously reduces the complexity and accompanying cost of nodes in an optical network, while also providing resilience against fiber and node failures.

摘要翻译： 本文的实施例包括用于在形成接入子网环的多个接入子网节点之一中使用的弹性分插模块。 该模块包括双臂无源光滤波器和循环阵列波导光栅（AWG）。 双臂无源光学滤波器被配置为弹性地将任何波长信道弹性地放置在从接入子网络环的任一臂唯一地分配给接入子网节点的固定频带内，并将固定频带内的任何波长信道弹性地添加到 访问子网环。 相应地，循环AWG配置为对由双臂滤波器丢弃的波长信道进行解复用，并复用由双臂滤波器添加的波长信道。 以这种方式配置，至少一些实施例中的模块有利地降低光网络中的节点的复杂性和伴随的成本，同时还提供针对光纤和节点故障的弹性。

公开(公告)号：US20140205296A1

公开(公告)日：2014-07-24

申请号：US13881667

申请日：2012-05-16

申请人： Stefan Dahlfort ,  Daniele Ceccarlli ,  Ming Xia

发明人： Stefan Dahlfort ,  Daniele Ceccarlli ,  Ming Xia

IPC分类号： H04J14/02

CPC分类号： H04J14/0267 ,  H04J14/0224 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/026 ,  H04Q11/02

摘要： The example embodiments presented herein are directed towards an Optical Network Element, ONE, node (14), and corresponding method therein, for establishing multiple spectral routing in an optical transport network. The establishment of the multiple spectral routing features the use of a Split-Spectrum Label, SSL, (11) which comprises multiple definitions for spectral slots, where each definition has an absolute starting and an absolute ending frequency allocation.

摘要翻译： 这里呈现的示例实施例针对光网络元件ONE（节点）（14）及其中的相应方法，用于在光传输网络中建立多个光谱路由。 多光谱路由的建立特征在于使用分裂频谱标签SSL（11），其包括用于频谱时隙的多个定义，其中每个定义具有绝对起始和绝对结束频率分配。

公开(公告)号：US08554078B2

公开(公告)日：2013-10-08

申请号：US12993945

申请日：2008-08-12

申请人： Fabio Cavaliere ,  Stefan Dahlfort ,  Pierpaolo Ghiggino

发明人： Fabio Cavaliere ,  Stefan Dahlfort ,  Pierpaolo Ghiggino

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282

摘要： An optical network includes a first passive optical network optical line terminal, coupled to a first port of a first optical filter arrangement, and a second passive optical network optical line terminal, coupled to a second port of the first optical filter arrangement. An optical coupler is connected between the second passive optical network line terminal and the second port of the first optical filter arrangement. A passive optical distribution node is coupled to a third port of the first optical filter arrangement.

摘要翻译： 光网络包括耦合到第一滤光器装置的第一端口的第一无源光网络光线路终端和耦合到第一光学滤波器装置的第二端口的第二无源光网络光线路终端。 光耦合器连接在第二无源光网络线路终端和第一光学滤波器装置的第二端口之间。 无源光分配节点耦合到第一光学滤波器装置的第三端口。

公开(公告)号：US20130183039A1

公开(公告)日：2013-07-18

申请号：US13352956

申请日：2012-01-18

申请人： David Hood ,  Stefan Dahlfort

发明人： David Hood ,  Stefan Dahlfort

IPC分类号： H04J14/02

CPC分类号： H04J14/0282 ,  H04J14/0234 ,  H04J14/0246 ,  H04J14/025

摘要： An optical network unit (ONU) accesses services provided by multiple optical line terminals (OLTs) in a wavelength division multiplexing (WDM) passive optical network (PON). The ONU receives downstream signals from a first plurality of OLTs through a designated port of an arrayed waveguide (AWG). At any given time, the bandpass filter module can select any one of a first plurality of AWG cycles allocated to the first plurality of OLTs. Based on received downstream signals, the ONU transmits upstream signals to a second plurality of OLTs through the designated port of the AWG. At any given time, the bandpass filter module and a transmitter of the ONU can select any one of a second plurality of AWG cycles allocated to the second plurality of OLTs. The ONU may be configured with a plurality of receivers and transmitters, whereby it is enabled to simultaneously subscribe to a plurality of AWG cycles.

摘要翻译： 光网络单元（ONU）访问由波分多路复用（WDM）无源光网络（PON）中的多个光线路终端（OLT）提供的服务。 ONU通过阵列波导（AWG）的指定端口从第一多个OLT接收下行信号。 在任何给定时间，带通滤波器模块可以选择分配给第一多个OLT的第一多个AWG周期中的任一个。 基于接收到的下行信号，ONU通过AWG的指定端口将上行信号发送到第二多个OLT。 在任何给定时间，带通滤波器模块和ONU的发射机可以选择分配给第二多个OLT的第二多个AWG周期中的任何一个。 ONU可以配置有多个接收机和发射机，由此能够同时订阅多个AWG周期。

公开(公告)号：US20130071118A1

公开(公告)日：2013-03-21

申请号：US13235227

申请日：2011-09-16

申请人： Fabio CAVALIERE ,  Stefan DAHLFORT ,  Luca GIORGI

发明人： Fabio CAVALIERE ,  Stefan DAHLFORT ,  Luca GIORGI

IPC分类号： H04B10/20

CPC分类号： H04L25/4902

摘要： Methods and apparatus for line coding in a communications network are described. According to one embodiment of the invention, downstream communications traffic bits are received and mapped into downstream bit positions of a transmission structure. A pre-selected bit in each upstream bit positions of the transmission structure is provided to form a downstream transmission structure. A downstream optical signal carrying the downstream transmission structure is generated for transmission. Upstream communications traffic bits are also received and mapped into the upstream bit positions of the transmission structure to form an upstream transmission structure. An upstream optical signal carrying the upstream transmission structure is generated for transmission.

摘要翻译： 描述了通信网络中线路编码的方法和装置。 根据本发明的一个实施例，下行通信业务比特被接收并映射到传输结构的下游比特位置。 提供传输结构的每个上游位位置中的预选位以形成下游传输结构。 产生携带下游传输结构的下行光信号用于传输。 上行通信业务比特也被接收并映射到传输结构的上游比特位置，形成上行传输结构。 产生携带上游传输结构的上行光信号用于传输。

公开(公告)号：US09252912B2

公开(公告)日：2016-02-02

申请号：US13542295

申请日：2012-07-05

申请人： Ming Xia ,  Stefan Dahlfort

发明人： Ming Xia ,  Stefan Dahlfort

IPC分类号： H04J14/00 ,  H04Q11/00 ,  H04J14/02

CPC分类号： H04J14/0257 ,  H04J14/0267 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0086

摘要： Methods and apparatus are disclosed for performing a spectrum assignment and route selection algorithm in an optical WDM network. The optical WDM is assigned an optical band of frequencies. In accordance to the present invention, a new spectrum assignment in the optical band always adjoins a spectrum assignment previously allocated. The very first spectrum assignment may be made to start with one end frequency in the optical band. Given a spectrum demand, one or more spectrum assignments are identified and one or more feasible routes are determined. Among the one or more feasible routes, an optimal route may be selected based on a set of pre-defined criteria. The spectrum assignment and route selection algorithm disclosed herein reduces computational complexities and improves spectrum efficiencies.

摘要翻译： 公开了用于在光WDM网络中执行频谱分配和路由选择算法的方法和装置。 光学WDM被分配一个频带的光带。 根据本发明，光带中的新频谱分配总是与先前分配的频谱分配相邻。 可以使第一频谱分配从光带中的一个终端频率开始。 给定频谱需求，识别一个或多个频谱分配，并确定一个或多个可行路线。 在一个或多个可行路线中，可以基于一组预定义标准来选择最优路线。 本文公开的频谱分配和路由选择算法降低了计算复杂度并提高了频谱效率。

公开(公告)号：US09031408B2

公开(公告)日：2015-05-12

申请号：US13157017

申请日：2011-06-09

申请人： Stefan Dahlfort ,  David Hood

发明人： Stefan Dahlfort ,  David Hood

IPC分类号： H04B10/20 ,  H04J14/02

CPC分类号： H04J14/0282 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/026 ,  H04J14/0267 ,  H04J14/0269

摘要： A method provides advertisements to optical network units (ONUs) by an optical line terminal (OLT), wherein the advertisements enable the ONUs to identify free channels from a plurality of wavelength-division multiplexing (WDM) channels in a passive optical network (PON). The method includes: transmitting from the OLT to the ONUs an advertisement identifying a free channel for each of a plurality of incompatible channel (ICH) groups, receiving a request from an ONU for the advertised free channel of an ICH group, authenticating the requesting ONU via the advertised free channel, allocating the advertised free channel to the requesting ONU upon successful authentication of the requesting ONU, and transmitting an updated advertisement from the OLT to the ONUs.

摘要翻译： 一种方法通过光线路终端（OLT）向光网络单元（ONU）提供广告，其中广告使得ONU能够从无源光网络（PON）中的多个波分复用（WDM）信道中识别自由信道， 。 该方法包括：从OLT向ONU发送识别多个不兼容信道（ICH）组中的每一个的空闲信道的广告，从ONU接收针对ICH组的通告空闲信道的请求，认证请求ONU 通过发布的自由频道，在请求的ONU成功认证后将所通告的空闲信道分配给请求的ONU，并将更新的广告从OLT发送到ONU。

公开(公告)号：US20150086209A1

公开(公告)日：2015-03-26

申请号：US14387463

申请日：2012-04-05

申请人： Kim Laraqui ,  Stefan Dahlfort ,  Zere Ghebretensaé ,  Panagiotis Saltsidis

发明人： Kim Laraqui ,  Stefan Dahlfort ,  Zere Ghebretensaé ,  Panagiotis Saltsidis

IPC分类号： H04B10/2575

CPC分类号： H04B10/25758 ,  H04B10/2575

摘要： An arrangement in a network (10), comprising: a site node (100) arranged to comprise a base station (120), the base station (120) being adapted for termination of wireless communication, and a central node (140) arranged to comprise a service unit (160), the service unit (160) being adapted for communication with the base station (120), wherein the central node (140) comprises a central switch unit (155), adapted for switching of data between the base station (120) and the service unit (160), wherein the base station (120) and the central switch unit (155) are optically connected, thus enabling that communication is carried by light.

摘要翻译： 一种网络（10）中的布置，包括：站点节点（100），被布置为包括基站（120），所述基站（120）适于终止无线通信;以及中心节点（140），被布置为 包括服务单元（160），所述服务单元（160）适于与所述基站（120）通信，其中所述中央节点（140）包括中央交换单元（155），适于在所述基站 站（120）和服务单元（160），其中基站（120）和中央交换单元（155）被光学连接，从而使得能够通过光进行通信。

公开(公告)号：US08817589B2

公开(公告)日：2014-08-26

申请号：US13235227

申请日：2011-09-16

申请人： Fabio Cavaliere ,  Stefan Dahlfort ,  Luca Giorgi

发明人： Fabio Cavaliere ,  Stefan Dahlfort ,  Luca Giorgi

IPC分类号： H04J9/00 ,  H04J14/00 ,  H04B10/20 ,  H04B10/00 ,  H04L25/49

CPC分类号： H04L25/4902

摘要： Methods and apparatus for line coding in a communications network are described. According to one embodiment of the invention, downstream communications traffic bits are received and mapped into downstream bit positions of a transmission structure. A pre-selected bit in each upstream bit positions of the transmission structure is provided to form a downstream transmission structure. A downstream optical signal carrying the downstream transmission structure is generated for transmission. Upstream communications traffic bits are also received and mapped into the upstream bit positions of the transmission structure to form an upstream transmission structure. An upstream optical signal carrying the upstream transmission structure is generated for transmission.

摘要翻译： 描述了通信网络中线路编码的方法和装置。 根据本发明的一个实施例，下行通信业务比特被接收并映射到传输结构的下游比特位置。 提供传输结构的每个上游位位置中的预选位以形成下游传输结构。 产生携带下游传输结构的下行光信号用于传输。 上行通信业务比特也被接收并映射到传输结构的上游比特位置，形成上行传输结构。 产生携带上游传输结构的上行光信号用于传输。

公开(公告)号：US08744263B2

公开(公告)日：2014-06-03

申请号：US13132536

申请日：2009-12-01

申请人： Peter Öhlén ,  Stefan Dahlfort

发明人： Peter Öhlén ,  Stefan Dahlfort

IPC分类号： H04J14/00

CPC分类号： H04B10/272 ,  H04J14/0221 ,  H04J14/0282

摘要： A wavelength-multiplexed passive optical network (WDM-PON) and a method are described herein for setting-up (e.g., wavelength tuning, power tuning) an ONT laser by establishing a communications channel on an optical layer between an optical line terminal (OLT) and an optical network termination (ONT). The communications channel is established by utilizing the OLT's laser shutdown function and the ONT's signal detection function.

摘要翻译： 本文描述了波分复用无源光网络（WDM-PON）和方法，用于通过在光线路终端（OLT）之间的光学层上建立通信信道来建立（例如波长调谐，功率调谐）ONT激光器 ）和光网络终端（ONT）。 通过利用OLT的激光关机功能和ONT的信号检测功能建立通信信道。