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    • 62. 发明申请
    • OPTICAL AMPLIFICATION CONTROL APPARATUS AND CONTROL METHOD OF THE SAME
    • 光放大控制装置及其控制方法
    • US20150009555A1
    • 2015-01-08
    • US14344257
    • 2012-08-30
    • Yurie Takahashi
    • Yurie Takahashi
    • H01S3/10H04J14/02
    • H01S3/10023H01S3/10015H01S3/1301H04B10/2939H04J14/021H04J14/0221H04J14/0241
    • An optical amplification control apparatus is provided with: a first branch unit for branching an optical signal to which an additional optical signal with a predetermined wavelength has been added in a self node or a nearest node; a first filter unit for extracting the additional optical signal from one optical signal into which the first branch unit has branched; an amplification unit for amplifying the other optical signal into which the first branch unit has branched; a second branch unit for branching the optical signal amplified by the amplification unit; a second filter unit for extracting the additional optical signal from one optical signal into which the second branch unit has branched; and a first control unit for performing automatic gain control of the amplification unit based on the additional optical signal extracted by the first filter unit, and the additional optical signal extracted by the second filter unit.
    • 一种光放大控制装置具有:第一分支单元,用于分支具有预定波长的附加光信号的光信号已经被添加到自节点或最近节点中; 第一滤波器单元,用于从第一分支单元已经分支的一个光信号中提取附加光信号; 放大单元,用于放大第一分支单元已经分支的另一个光信号; 第二分支单元,用于对由放大单元放大的光信号进行分支; 第二滤波器单元,用于从第二分支单元已经分支到的一个光信号中提取附加光信号; 以及第一控制单元,用于基于由第一滤波器单元提取的附加光信号和由第二滤波器单元提取的附加光信号执行放大单元的自动增益控制。
    • 66. 发明申请
    • Network Fragmentation Measurement in an Optical Wavelength Division Multiplexing (WDM) Network
    • 光波分复用(WDM)网络中的网络分段测量
    • US20140226986A1
    • 2014-08-14
    • US14177654
    • 2014-02-11
    • NEC Laboratories America, Inc.
    • Ankitkumar PatelPhilip Nan Ji
    • H04J14/02H04L12/721
    • H04J14/021H04J14/0224H04J14/0257H04L45/12
    • A method implemented in a network apparatus used in a wavelength division multiplexing (WDM) optical network is disclosed. The method includes (a) finding K-shortest routes between each node pair (s, d), where s, d∈V and |V|≦K, where V is a set of reconfigurable optical add-drop multiplexer (ROADM) nodes, (b) selecting unconsidered node pair (s, d), (c) selecting unconsidered route k between nodes s and d out of the K-shortest routes, (d) finding a bit map of route k by performing bit-wise logical AND operation on bit vectors of fibers along route k, (e) selecting unconsidered line rate l out of offered set L of line rates, and (f) finding a probability αls,d,k of provisioning a connection with line rate l. Other apparatuses, systems, and methods also are disclosed.
    • 公开了一种在波分多路复用(WDM)光网络中使用的网络装置中实现的方法。 该方法包括:(a)在每个节点对(s,d)之间找到K个最短路径,其中s,d∈V和| V |≦̸ K,其中V是可重配置光分插复用器(ROADM) 节点,(b)选择未考虑的节点对(s,d),(c)从K个最短路由中的节点s和d之间选择未被考虑的路由k,(d)通过逐位执行寻找路由k的位图 沿着路线k对光纤的位向量进行逻辑与运算,(e)从所提供的线路速率集合L中选择未考虑的线路速率l,以及(f)找到用线路速率l提供连接的概率αls,d,k。 还公开了其他装置,系统和方法。
    • 68. 发明申请
    • End-to-End Carrier Frequency Control to Improve Bandwidth Utilization in an Optical Network
    • 端到端载波频率控制,以提高光网络中的带宽利用率
    • US20140161443A1
    • 2014-06-12
    • US13707841
    • 2012-12-07
    • AT&T INTELLECTUAL PROPERTY I, L.P.
    • Xiang Zhou
    • H04J14/02
    • H04J14/021H04B10/0775H04J14/0275
    • A system to provide carrier frequency control in an optical network includes a first network element monitoring performance information and a second network element coupled to the first network element by the optical network. The second network element receives performance information from the first network element using an administration channel bandwidth, and modifies a carrier frequency associated with the second network element based on the performance information such that the carrier frequency is aligned to a center of a signal channel bandwidth. A method of providing carrier frequency control includes transmitting performance information by the first network element to the second network element using an administration channel bandwidth, and modifying the carrier frequency by the second network element based on the performance information such that the carrier frequency is aligned to the center of the signal channel bandwidth. The administrative channel bandwidth can be within or outside the signal channel bandwidth. A corresponding computer-readable device is disclosed.
    • 在光网络中提供载波频率控制的系统包括:监测性能信息的第一网络单元和由光网络耦合到第一网络单元的第二网络单元。 第二网络单元使用管理信道带宽从第一网元接收性能信息,并且基于性能信息修改与第二网元相关联的载波频率,使得载波频率与信号信道带宽的中心对准。 提供载波频率控制的方法包括使用管理信道带宽将第一网元的性能信息发送给第二网元,并且基于性能信息修改第二网元的载波频率,使得载波频率与 信号通道带宽的中心。 管理信道带宽可以在信号通道带宽内或外。 公开了相应的计算机可读设备。
    • 69. 发明申请
    • OPTICAL DROP APPARATUS, OPTICAL ADD APPARATUS, AND OPTICAL ADD/DROP APPARATUS
    • 光学设备,光学设备和光学附加设备
    • US20140147121A1
    • 2014-05-29
    • US14033894
    • 2013-09-23
    • FUJITSU LIMITED
    • Yoshinobu MATSUKAWA
    • H04J14/02
    • H04J14/0204H04J14/0206H04J14/0209H04J14/021H04J14/0212H04J14/0213H04J14/0217
    • Provided is an optical apparatus including: wavelength separation units corresponding to the respective routes, each of which divides a wavelength multiplexed optical signal of one route into M wavelength groups (M is an integer satisfying N×M=the number of multiplexed wavelengths of the wavelength multiplexed optical signal of one route), each of which includes N wavelengths (N is an integer of 2 or more); and M wavelength separation blocks, each of which is input with a plurality of the wavelength groups divided by the different wavelength separation units and outputs optical signals with any one or a plurality of wavelengths included in the input wavelength groups to N coherent transponders. Accordingly, it is possible to flexibly adapt to extension in wavelength or extension in route in units of a wavelength separation block and/or wavelength multiplexing block.
    • 本发明提供一种光学装置,包括:对应于各路径的波长分离单元,每个路由将一个路由的波长复用光信号划分成M个波长组(M是满足N×M的整数=波长的多路复用波长数 一个路由的复用光信号),其中每个包括N个波长(N是2或更大的整数); 和M个波长分离块,其中每个波长分离块输入有由波长不同的分离单元划分的多个波长组,并将包括在输入波长组中的任何一个或多个波长的光信号输出到N个相干转发器。 因此,可以以波长分离块和/或波长复用块为单位在路由中灵活地适应波长或扩展的扩展。