会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 12. 发明授权
    • Optical cross-connect apparatus
    • 光交叉连接装置
    • US06999648B2
    • 2006-02-14
    • US10786082
    • 2004-02-26
    • Yoichi OikawaMakoto MurakamiTakehisa Ishikawa
    • Yoichi OikawaMakoto MurakamiTakehisa Ishikawa
    • G02B6/35G02B6/28H04J14/02
    • H04Q11/0005H04Q2011/0011H04Q2011/0016H04Q2011/002H04Q2011/0045H04Q2011/0049
    • An optical cross-connect apparatus that realizes high throughput in optical cross-connection by performing large-scale switching. An input optical signal processing section converts wavelengths contained in each input WDM signal into wavelengths the number of which is equal to the number of WDM signals, compresses the pulse widths of the WDM signals by dividing the pulse widths by the number of the wavelengths contained in each input WDM signal, and performs a phase shift so that the phases of a plurality of compressed signal will not be the same. A wavelength switching section includes passive optical devices and distributes the optical signals processed by the input optical signal processing section according to wavelengths. An output optical signal processing section converts wavelengths contained in the optical signals distributed by the wavelength switching section into wavelengths recognized from the phases of the optical signals, expands the pulse widths of the optical signals, and outputs WDM signals.
    • 一种光交叉连接装置,通过进行大规模切换,实现光交叉连接中的高吞吐量。 输入光信号处理部分将每个输入WDM信号中包含的波长转换为数量等于WDM信号数的波长,通过将脉冲宽度除以波长数目的波长数来压缩WDM信号的脉冲宽度 每个输入WDM信号,并且执行相移,使得多个压缩信号的相位将不相同。 波长切换部分包括无源光学装置,并根据波长分配由输入光信号处理部分处理的光信号。 输出光信号处理部将由波长切换部分散的光信号中包含的波长变换为从光信号的相位识别的波长,扩大光信号的脉冲宽度,并输出WDM信号。
    • 15. 发明授权
    • Optical transmission system
    • 光传输系统
    • US06307985B1
    • 2001-10-23
    • US09348838
    • 1999-07-08
    • Makoto MurakamiHideki MaedaTakamasa Imai
    • Makoto MurakamiHideki MaedaTakamasa Imai
    • G02B602
    • H04B10/25253
    • It is the objective of the present invention to resolve the limitations on transmission capacity and distance in a system by means of a simple design, through the provision of a means for restraining the deterioration in transmission characteristics that is the result of accumulation over the entire system of third order dispersion in the optical fiber. In the present invention, there is provided an optical fiber transmission path in which positive dispersion fibers 40,46,52, and 54 and negative dispersion fibers 42,48 (referred to as optical fibers hereinafter), which have at least second and third order dispersion of mutually opposite signs, are combined. In addition, the optical fiber is disposed so that the average third order dispersion value on the transmission path overall is reduced, and so the length of each optical fiber is sufficiently smaller than the square root of the product of the second order dispersion length, which is determined from the second order dispersion value of the optical fiber and the pulse width of the signal, and the non-linear length, which is determined from the average power of the signal within the optical fiber and the optical fiber nonlinear coefficient.
    • 本发明的目的是通过简单的设计来解决系统中的传输容量和距离的限制,通过提供一种用于抑制作为在整个系统上累积的结果的传输特性的劣化的装置 的光纤中的三阶色散。 在本发明中,提供了一种光纤传输路径,其中正色散光纤40,46,52和54以及负色散光纤42,48(以下称为光纤)至少具有第二和第三级 相互相反的符号的分散相结合。 此外,光纤被布置成使得传输路径总体上的平均三阶色散值减小,因此每条光纤的长度足够小于二阶色散长度的乘积的平方根,其中 根据光纤的二阶色散值和信号的脉冲宽度以及由光纤内的信号的平均功率和光纤非线性系数确定的非线性长度来确定。
    • 19. 发明授权
    • Dispersion compensation device, optical reception device, method for dispersion compensation, and method for optical reception
    • 色散补偿装置,光接收装置,色散补偿方法和光接收方法
    • US08326160B2
    • 2012-12-04
    • US12951643
    • 2010-11-22
    • Makoto MurakamiToshihiro Ohtani
    • Makoto MurakamiToshihiro Ohtani
    • H04B10/06H04B10/00H04B10/12H04J14/02
    • H04B10/25133H04B2210/252
    • A dispersion compensation device includes: an optical branching unit to branch an optical signal to be received; a first dispersion compensator to perform dispersion compensation on one part of the optical signal branched by the optical branching unit with a variable compensation amount; a second dispersion compensator to perform dispersion compensation on another part of the optical signal branched by the optical branching unit; a monitoring unit to monitor the communication quality of an output optical signal of the second dispersion compensator; and a controlling unit to determine the direction of variation in chromatic dispersion of the optical signal based on the direction of variation in communication quality monitored by the monitoring unit and control the compensation amount of the first dispersion compensator based on the result of the determination.
    • 色散补偿装置包括:光分支单元,用于分支待接收的光信号; 第一色散补偿器,对具有可变补偿量的光分支单元分支的光信号的一部分进行色散补偿; 第二色散补偿器,对由光分支单元分支的光信号的另一部分进行色散补偿; 监视单元,用于监视第二色散补偿器的输出光信号的通信质量; 以及控制单元,其基于由所述监视单元监视的通信质量的变化方向来确定所述光信号的色散的变化方向,并且基于所述确定的结果来控制所述第一色散补偿器的补偿量。