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    • 3. 发明授权
    • Dual-band fiber optic amplification system using a single pump source
    • 双波段光纤放大系统采用单泵源
    • US5978130A
    • 1999-11-02
    • US931500
    • 1997-09-16
    • John FeeNiall RobinsonShoa-Kai Liu
    • John FeeNiall RobinsonShoa-Kai Liu
    • H01S3/094H01S3/16H04B10/00
    • H01S3/094003H01S3/1608H01S3/1613
    • A dual-band optical amplifier uses a single pump source, such as a YAG solid-state laser emitting a pump light at a wavelength of 1047 nm, to provide amplification in both the 1550 nm and 1310 nm bands which are commonly encountered in the optical telecommunications environment. The pump light is fed into a fiber doped with praseodymium fluoride having Pr atoms in a +3 ionization state. These ions exhibit a ground state absorption that includes the 1047 nm wavelength. The same pump light is also coupled to a separate amplification fiber doped with trivalent erbium ions and ytterbium. This combination of ions also can be pumped to a metastable excited state by a 1047 nm wavelength source. Accordingly, when photon emission is generated, there is signal amplification in both fibers results.
    • 双波段光放大器使用单个泵浦源,例如发射波长为1047nm的泵浦光的YAG固态激光器,以在光学器件中通常遇到的1550nm和1310nm带中提供放大 电信环境。 泵浦光被馈送到掺杂有具有+3电离状态的Pr原子的氟化镨氟化物的纤维中。 这些离子表现出包括1047nm波长的基态吸收。 相同的泵浦光也耦合到掺杂有三价铒离子和镱的单独的放大光纤。 离子的这种组合也可以被1047nm的波长源泵送到亚稳激发态。 因此,当产生光子发射时,在两个光纤结果中都有信号放大。
    • 8. 发明申请
    • System and method for providing service-agnostic network resources
    • 提供与服务无关的网络资源的系统和方法
    • US20060133405A1
    • 2006-06-22
    • US11295879
    • 2005-12-07
    • John Fee
    • John Fee
    • H04J3/16H04J3/22
    • H04Q3/005H04L12/2856
    • System and method for providing service-agnostic network resources is provided. An embodiment receives an indication that a user is requesting services at a new location, retrieves an access profile, which includes service parameters for services to which the user subscribes, and causes the access network and the programmable network to be reconfigured to provide to the user's services at the new location. The indication may be generated automatically or manually. A network control database that stores network topology information and/or configuration instructions may be used to reconfigure the network resources. In this manner, the access network and the programmable network may be reconfigured to allow the user to move from location to location and from device to device and continue to receive a consistent set of transport services, even involving multiple forms of transport.
    • 提供了提供服务不可知网络资源的系统和方法。 实施例接收用户在新位置请求服务的指示,检索包括用户订阅的服务的服务参数的访问简档,并且使得接入网络和可编程网络被重新配置以提供给用户的 服务在新的位置。 该指示可以自动或手动生成。 可以使用存储网络拓扑信息和/或配置指令的网络控制数据库来重新配置网络资源。 以这种方式,可以重新配置接入网络和可编程网络,以允许用户从位置移动到位置,并且从设备移动到设备,并且继续接收一组一致的传输服务,甚至涉及多种传输形式。
    • 9. 发明申请
    • Methods and systems for controlling fiber polarization mode dispersion (PMD)
    • 用于控制光纤偏振模色散(PMD)的方法和系统
    • US20050174564A1
    • 2005-08-11
    • US10922131
    • 2004-08-20
    • John Fee
    • John Fee
    • G01N21/00G02B6/02
    • G06F17/18C03B2203/36G01M11/336G02B6/02285G06F15/00
    • A method is provided for predicting an installed performance parameter of an optical fiber cable. The method includes obtaining a measurement indicative of a value of the performance parameter at a first moment in time. A measurement indicative of a value of the performance parameter at a second moment in time may then be obtained. A first correlation may then be determined between the measurement at the first moment in time and the measurement at the second moment in time. A value of the performance parameter at the second moment in time may then be estimated based upon the measurement at the first moment in time in combination with the first correlation, the first correlation being based upon observations of a manner in which the performance parameter varies over time for at least a second optical fiber.
    • 提供了一种用于预测光缆的安装性能参数的方法。 该方法包括在第一时刻获得表示性能参数的值的测量值。 然后可以获得指示在第二时刻的性能参数的值的测量。 然后可以在第一时刻的测量和在第二时刻的测量之间确定第一相关性。 然后可以基于第一时刻的测量结合第一相关性来估计在时间上的第二时刻的性能参数的值,第一相关是基于对性能参数变化的方式的观察 至少第二光纤的时间。
    • 10. 发明授权
    • Method and system for equalizing PMD using incremental delay switching
    • 使用增量延迟切换来均衡PMD的方法和系统
    • US5859939A
    • 1999-01-12
    • US804986
    • 1997-02-25
    • John FeeNiall Robinson
    • John FeeNiall Robinson
    • G01M11/02G02F1/313H04B10/02H04B10/18G02B6/26
    • H04B10/2569
    • A polarization beam splitter separates the optical data signal into first and second orthogonally polarized optical signals. A first variable time delay element provides a first incremental propagation delay for the first polarized optical signal. A second variable time delay element provides a second incremental propagation delay for the second polarized optical signal. The first and second variable time delay elements consist of a series of optical switches optically interconnected by different incremental lengths of optical fiber. For example, 2.times.2 optical switches are provided for switching between a reference fiber segment and a respective delay fiber segment to provide a relative incremental propagation delay. A controller controls optical switches in the first and second variable switching delay elements to set first and second incremental propagation delays. In particular, the first and second polarized optical signals are incrementally delayed relative to one another so as to compensate for polarization mode dispersion. A beam combiner then combines the first and second signals to form an optical output data signal which can be detected accurately by a receiver without the effects of polarization mode dispersion. In this way, optical data signals can be reliably transmitted over greater distances along a long-haul fiber optic dispersive medium at even greater bit-rates and bandwidth.
    • 偏振分束器将光学数据信号分离为第一和第二正交偏振光信号。 第一可变时间延迟元件为第一偏振光信号提供第一增量传播延迟。 第二可变时间延迟元件为第二偏振光信号提供第二增量传播延迟。 第一和第二可变时间延迟元件由一系列由不同增量长度的光纤互连的光学开关组成。 例如,提供2x2个光开关用于在参考光纤段和相应的延迟光纤段之间切换以提供相对增量的传播延迟。 控制器控制第一和第二可变切换延迟元件中的光开关以设定第一和第二增量传播延迟。 特别地,第一和第二偏振光信号相对于彼此递增地延迟,以补偿偏振模色散。 然后,光束组合器组合第一和第二信号以形成光输出数据信号,其可以由接收器精确地检测而不受偏振模色散的影响。 以这种方式,光学数据信号可以以更高的比特率和带宽沿着长距离的光纤色散介质在更远的距离上被可靠地传输。