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
    • 4. 发明专利
    • Optical fiber transmission system and optical fiber transmission method
    • 光纤传输系统和光纤传输方法
    • JP2013214852A
    • 2013-10-17
    • JP2012083485
    • 2012-04-02
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • SAKAMOTO YASUSHIMORI TAKAYOSHIYAMAMOTO TAKASHI
    • H04B10/2581H04B10/2507H04J14/00H04J14/04H04J14/06
    • PROBLEM TO BE SOLVED: To dispense with different kinds of optical fiber to eliminate the need for taking fabrication errors of different kinds of optical fiber into consideration and the possibility of unintended mode conversion to occur, thereby compensating mode dispersion easily and surely.SOLUTION: An optical fiber transmission system of the present invention comprises: optical fiber 4 having substantially uniform refraction index in a light propagation direction and having four light propagation modes, capable of propagating four kinds of optical signals in the same wavelength; and mode converters 9A-1, 9A-2 and 9A-3, disposed at a position where the optical fiber 4 is divided into four substantially equal parts in the light propagation direction, which each convert the optical propagation mode before input and after output of the optical signal exclusively from one to another between four optical propagation modes to substantially equalize the distance over which each of the four kinds of optical signals are propagated in each of the four optical propagation modes.
    • 要解决的问题:为了省去不同种类的光纤,消除了考虑到不同种类的光纤的制造误差的需要以及发生意外模式转换的可能性,从而容易且可靠地补偿模式分散。解决方案: 本发明的光纤传输系统包括:在光传播方向具有基本均匀的折射率并具有四种光传播模式的光纤4,其能够传播相同波长的四种光信号; 和模式转换器9A-1,9A-2和9A-3,其设置在光纤4在光传播方向上被分成四个基本相等的部分的位置,每个转换器在输入之前和之后输出时转换光传播模式 光信号在四个光传播模式之间专门从一个到另一个,以基本上均衡在四种光传播模式中的每一种传播四种光信号中的每一种的距离。
    • 5. 发明专利
    • Optical fiber transmission system and optical reception apparatus
    • 光纤传输系统和光接收装置
    • JP2012227764A
    • 2012-11-15
    • JP2011094052
    • 2011-04-20
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • SAKAMOTO YASUSHIYAMAMOTO TAKASHIMORI TAKAYOSHI
    • H04B10/18H04B3/06H04B3/10H04B10/02H04B10/04H04B10/06H04B10/142H04B10/152H04B10/20
    • PROBLEM TO BE SOLVED: To provide a technique for implementing long distance transmission by multimode optical fiber transmission.SOLUTION: The present invention relates to an optical fiber transmission system including: a single optical transmitter 1 for transmitting an optical signal; M (M is an integer of two or more) optical receivers 2 for receiving the optical signal; an optical fiber 3 for propagating the optical signal transmitted by the single optical transmitter 1 and having P (P is an integer of two or more and an integer of M or less) propagation modes; a demultiplexer 4 for separating the optical signal propagated by the optical fiber 3 to the M optical receivers 2; and an FIR filter device 5 for compensating a group delay error by means of an FIR filter comprising a delay element for adjusting delay time and an amplitude/phase adjuster for adjusting amplitude and phase about the optical signal received by each optical receiver 2.
    • 要解决的问题:提供一种通过多模光纤传输实现长距离传输的技术。 光纤传输系统技术领域本发明涉及一种光纤传输系统,包括:发送光信号的单个光发射机1; M(M是两个以上的整数)光接收机2,用于接收光信号; 用于传播由单个光发送机1发送的光信号并具有P(P为2以上的整数,M以下的整数)传播模式的光纤3; 用于将由光纤3传播的光信号分离到M个光接收机2的解复用器4; 以及用于通过包括用于调整延迟时间的延迟元件的FIR滤波器来补偿组延迟误差的FIR滤波器装置5以及用于调整由每个光接收器2接收的光信号的幅度和相位的幅度/相位调整器。

      版权所有(C)2013,JPO&INPIT

    • 7. 发明专利
    • Vacancy optical fiber
    • VACANCY光纤
    • JP2011027866A
    • 2011-02-10
    • JP2009171749
    • 2009-07-23
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • MATSUI TAKASHITSUJIKAWA KYOZOSAKAMOTO YASUSHITOMITA SHIGERU
    • G02B6/00G02B6/032G02B6/036
    • PROBLEM TO BE SOLVED: To provide a vacancy optical fiber capable of securing an effective cross sectional area larger than a conventional optical fiber while compensating single mode operation and maintaining practical bending loss characteristics. SOLUTION: The vacancy optical fiber 11 is configured such that: it has a core region 12, a first clad region 13 surrounding the core region, and a second clad region 14 surrounding the first clad region; the first clad region and the second clad region each comprise a plurality of vacancies 15 with different diameters, wherein the diameter d 1 of the vacancies in the first clad region is larger than the diameter d of the vacancies in the second clad region; and a refractive index in the core region is higher than the effective refractive index of the first and second clad regions, wherein the effective refractive index in the first clad region is lower than the effective refractive index in the second clad region. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够确保有效的横截面面积大于常规光纤的空白光纤,同时补偿单模操作并保持实际的弯曲损耗特性。 解决方案:空隙光纤11被配置为:其具有芯区域12,围绕芯区域的第一包层区域13和围绕第一包层区域的第二包层区域14; 第一覆盖区域和第二覆盖区域各自包括具有不同直径的多个空位15,其中第一覆盖区域中的空位的直径d SB> 1 / SB>大于空位的直径d 第二包覆区; 并且所述芯区域的折射率高于所述第一和第二包层区域的有效折射率,其中所述第一包层区域中的有效折射率低于所述第二包层区域中的有效折射率。 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • Multiple wavelength light-generating apparatus and multiple wavelength light transmission system
    • 多波长发光装置和多波长光传输系统
    • JP2010050758A
    • 2010-03-04
    • JP2008213422
    • 2008-08-22
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • SAKAMOTO YASUSHIYAMAMOTO TAKASHISHIRAKI KAZUYUKI
    • H04B10/2507G02F1/035H04B10/2537H04B10/508H04B10/516H04B10/524H04B10/54H04B10/556H04B10/588H04B10/61H04J14/00H04J14/02
    • PROBLEM TO BE SOLVED: To provide a multiple wavelength light-generating apparatus in which frequency control of a light entering into an optical fiber is easily performed and capable of stably suppressing SBS, and to provide a multiple wavelength light transmission system.
      SOLUTION: In the multiple wavelength light transmission system having the multiple wavelength-generating apparatus 10A for generating a multiple wavelength light, and an optical fiber 12 for connecting the multiple wavelength light-generating apparatus 10A to a receiver 11 for receiving the multiple wavelength light generated by the multiple wavelength light-generating apparatus 10A, the multiple wavelength light-generating apparatus 10A has a CW light source 13 for oscillating a light having a single frequency, a modulator 14 for modulating light oscillated from the CW light source 13, and a signal generator 15 for generating an electric signal having a frequency of double amount of Brillouin frequency shift of the optical fiber 12 and for applying the electric signal to the modulator 14.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够容易地进入入射到光纤中的光的频率控制并且能够稳定地抑制SBS并提供多波长光传输系统的多波长发光装置。 解决方案:在具有用于产生多波长光的多波长发生装置10A的多波长光传输系统中,以及用于将多波长发光装置10A连接到用于接收多波长光的接收机11的光纤12 多波长发光装置10A产生的波长光,多波长发光装置10A具有用于振荡具有单一频率的光的CW光源13,用于调制从CW光源13振荡的光的调制器14, 以及信号发生器15,用于产生具有双重光纤12的布里渊频移频率的电信号并将该信号施加到调制器14.信号发生器(C)2010,JPO&INPIT
    • 9. 发明专利
    • Variable wavelength dispersion compensating device and method
    • 可变波长分散补偿装置和方法
    • JP2009186507A
    • 2009-08-20
    • JP2008023155
    • 2008-02-01
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • SAKAMOTO YASUSHISHIRAKI KAZUYUKIKURASHIMA TOSHIO
    • G02F1/35
    • PROBLEM TO BE SOLVED: To provide a variable wavelength dispersion compensating device and method that adds an optional compensation amount to WDM signal light of each wavelength without generating loss with respect to the signal light. SOLUTION: The variable wavelength dispersion and compensation device causes light (pump light) transmitted in the opposite direction to the propagation direction of a light signal to enter an optical fiber 14 where a light signal is propagated through an optical branching filter or an optical circulator 13, thereby the wavelength dispersion of the light signal is compensated using a group refractive index change caused by the effect of a stimulated Brillouin scattering generated in the optical fiber. Further, at least either the frequency or strength of light (pump light) entering through the optical branching filter (or the optical circulator) is changed to control the wavelength dispersion compensating amount of the light signal. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种可变波长色散补偿装置和方法,其对每个波长的WDM信号光添加可选的补偿量,而不会相对于信号光产生损耗。 解决方案:可变波长色散和补偿装置使得沿与光信号的传播方向相反的方向传输的光(泵浦光)进入光纤14,其中光信号通过光分路滤波器或 光环行器13,由此由光纤中产生的受激布里渊散射的影响引起的组折射率变化来补偿光信号的波长色散。 此外,改变通过光分路滤波器(或光循环器)进入的光(泵浦光)的频率或强度中的至少一个,以控制光信号的波长色散补偿量。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Multimode optical fiber and optical fiber transmission system
    • 多模光纤和光纤传输系统
    • JP2014137588A
    • 2014-07-28
    • JP2013007853
    • 2013-01-18
    • Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • MORI TAKAYOSHISAKAMOTO YASUSHIWADA MASAKIYAMAMOTO TAKASHI
    • G02B6/028H04B10/2581
    • PROBLEM TO BE SOLVED: To provide a multimode optical fiber and optical fiber transmission system capable of reducing the group delay difference between propagation modes and making the number of propagation modes larger than two.SOLUTION: The multimode optical fiber of the present invention includes a core having a graded profile and a low refractive index layer outside the core, and can reduce the group delay difference between light propagation modes. In other words, in an optical transmission system using a MIMO technology, the load of digital signal processing can be reduced by using the multimode optical fiber. Therefore, the present invention can provide a multimode optical fiber capable of reducing the load of the digital processing required for reconstructing a signal.
    • 要解决的问题:提供能够减少传播模式之间的组延迟差异并使传播模式数大于2的多模光纤和光纤传输系统。解决方案:本发明的多模光纤包括核 在芯外部具有分级轮廓和低折射率层,并且可以减少光传播模式之间的组延迟差。 换句话说,在使用MIMO技术的光传输系统中,通过使用多模光纤可以减少数字信号处理的负担。 因此,本发明可以提供能够减少重建信号所需的数字处理的负载的多模光纤。