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    • 7. 发明授权
    • Selective intensity modulation of channels in a multiplexed optical communication system
    • 复用光通信系统中信道的选择性强度调制
    • US06529307B1
    • 2003-03-04
    • US09874474
    • 2001-06-04
    • Song PengMing Li
    • Song PengMing Li
    • G02F103
    • H04B10/2569H04B10/532
    • A method and apparatus for achieving dynamic intensity modulation of the channels in a wavelength-division multiplexed optical communication system is presented. Wavelengths are spatially separated into a plurality of channels, the polarization states of which are individually modulated. The channels can be combined or filtered by polarization states to achieve the desired intensity in the output signal. An exemplary embodiment includes at least a polarization modulator, a birefringent wedge, a lens, and a dispersive element (e.g., diffraction grating) arranged in various order. Each segment of the polarization modulator can be made to rotate the polarization direction of an incident channel by a specified angle. A half-wave plate may be inserted between the second dispersive element and the second birefringent wedge to eliminate polarization-dependent loss. Optionally, a parallel birefringent plate may be inserted after the second birefringent wedge to reduce polarization mode dispersion.
    • 提出了一种用于实现波分复用光通信系统中的信道的动态强度调制的方法和装置。 波长在空间上分成多个通道,其偏振状态被单独调制。 可以通过极化状态组合或滤波通道,以在输出信号中达到所需的强度。 示例性实施例至少包括以各种顺序布置的偏振调制器,双折射楔形,透镜和分散元件(例如,衍射光栅)。 可以使偏振调制器的每个段使入射通道的偏振方向旋转指定的角度。 可以在第二分散元件和第二双折射楔之间插入半波片,以消除偏振相关损耗。 可选地,可以在第二双折射楔之后插入平行双折射板以降低偏振模色散。
    • 9. 发明授权
    • Equalizing optical wavelength routers
    • 均衡光波长路由器
    • US07298540B2
    • 2007-11-20
    • US10225936
    • 2002-08-22
    • Song PengMing Li
    • Song PengMing Li
    • G02F1/01G02B5/30G02B5/18H04J14/02H04J14/06
    • G02B6/29314G02B6/2931G02B6/2938
    • A dynamic equalizing optical channel router includes an input port for receiving a wavelength division multiplexed composite optical signal comprising a plurality of channels; at least one output port; a diffraction grating optically coupled to the input and output ports; a lens optically coupled to the diffraction grating at a side opposite to the input and output ports; an array of steering devices optically coupled to the lens at a side opposite to the diffraction grating, wherein each channel is reflected by a different steering device of the array; and a plurality of attenuators, wherein each channel reflected by the array traverses one of the attenuators and the diffraction grating to the at least one output port. The router is able to dynamically adjust optical intensity of each wavelength channel by a different amount while also performing the function of wavelength routing.
    • 动态均衡光信道路由器包括用于接收包括多个信道的波分复用复合光信号的输入端口; 至少一个输出端口; 光学耦合到输入和输出端口的衍射光栅; 在与输入和输出端口相对的一侧光耦合到衍射光栅的透镜; 在与衍射光栅相对的一侧光学地耦合到透镜的转向装置阵列,其中每个通道被阵列的不同转向装置反射; 以及多个衰减器,其中由阵列反射的每个通道将衰减器中的一个和衍射光栅穿过至少一个输出端口。 路由器能够动态地调整每个波长信道的光强度,同时也执行波长路由功能。
    • 10. 发明授权
    • Optical wavelength router using reflective surfaces to direct output signals
    • 光波长路由器使用反射面直接输出信号
    • US06594082B1
    • 2003-07-15
    • US09794590
    • 2001-02-26
    • Ming LiSong Peng
    • Ming LiSong Peng
    • G02B2600
    • G02B6/272G02B6/2766G02B6/278G02B6/2931G02B6/29313G02B6/29395G02B6/3512H04Q11/0005H04Q2011/0024H04Q2011/003
    • An optical wavelength router utilizes a dispersive medium (e.g., a diffraction grating) and reflective surfaces. The dispersive medium separates an input optical signal (light beam) into a plurality of components, for example by wavelengths. The reflective surfaces convert the components into separate output beams traveling in the desired directions. The number and the direction of the output beams can be controlled by manipulating the angle of incidence at which the components strike the reflective surfaces. A micro-mirror array modulator serves as the reflective surfaces. Each mirror in the micro-mirror array modulator is positioned to direct individual components into a number of output signals. Alternatively, a polarization steering device which includes a polarization modulator and at least one birefringent element in addition to reflective surfaces is utilized. A Wollaston prism with a reflective surface may also be used.
    • 光波长路由器使用分散介质(例如,衍射光栅)和反射表面。 分散介质例如通过波长将输入光信号(光束)分离成多个分量。 反射表面将组件转换成沿所需方向行进的分离的输出光束。 输出光束的数量和方向可以通过操纵部件撞击反射表面的入射角来控制。 微镜阵列调制器用作反射表面。 微镜阵列调制器中的每个反射镜被定位成将各个部件引导到多个输出信号中。 或者,利用了包括偏振调制器和除了反射表面之外的至少一个双折射元件的偏振转向装置。 还可以使用具有反射表面的沃拉斯顿棱镜。