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    • 62. 发明申请
    • FIBER-BASED TUNABLE LASER
    • 光纤激光器
    • US20090041062A1
    • 2009-02-12
    • US12100669
    • 2008-04-10
    • Jian Liu
    • Jian Liu
    • H01S3/10H01S3/30
    • H01S3/0057G02B6/29361G02B6/29395G02B6/4215
    • A fiber-based tunable laser includes a spectrum-expansion device comprising a micro structured fiber configured to receive a pump laser pulse having a first band width and a first pulse energy, and to produce a spectrally expanded laser pulse having a second band width at least two times broader than the first band width. The fiber-based tunable laser also includes a combiner that can couple the pump laser pulse into the spectrum-expansion device and a filter that can select a signal laser wavelength within the second band width and to produce a signal laser pulse at the signal laser wavelength. The signal laser pulse has a third band width narrower than the second band width. One or more cavity fibers allow propagation of the spectrally expanded laser pulse and the signal laser pulse between the spectrum-expansion device and the filter.
    • 基于光纤的可调谐激光器包括频谱扩展装置,其包括被配置为接收具有第一带宽和第一脉冲能量的泵浦激光脉冲的微结构光纤,并且产生具有至少第二带宽的光谱扩展的激光脉冲 比第一个带宽宽两倍。 基于光纤的可调谐激光器还包括可以将泵激光脉冲耦合到频谱扩展装置中的组合器和可以在第二带宽内选择信号激光波长并且以信号激光波长产生信号激光脉冲的滤波器 。 信号激光脉冲具有比第二带宽窄的第三带宽。 一个或多个空腔光纤允许频谱扩展的激光脉冲和信号激光脉冲在频谱扩展装置和滤波器之间传播。
    • 64. 发明授权
    • High power pulse shaping fiber laser for high data rate free space telecommunication systems
    • 高功率脉冲整形光纤激光器,用于高数据速率自由空间电信系统
    • US07256930B2
    • 2007-08-14
    • US10825746
    • 2004-04-15
    • Jian Liu
    • Jian Liu
    • H04B10/12
    • H01S3/0941H01S3/005H01S3/0078H01S3/0085H01S3/06708H01S3/0675H01S3/06758H01S3/1608
    • An amplified laser source for amplifying a laser projection that includes a diode laser source modulated by a pulse generator applying an alternate high and low voltages higher and lower than a threshold voltage for projecting a modulated optical signal. The laser source further includes a first erbium-doped fiber (EDF) for amplifying the modulated optical signal. The laser source further includes a set of Bragg gratings for receiving the modulated optical signal from the first EDF for reflecting a grating-specific pulse-distortion-reduced optical signal. The laser source further includes an electro-absorption (EA) modulator synchronized with the pulse generator for increasing an extinction ratio of the optical signals. The laser source further includes a second erbium doped fiber (EDF) for receiving and amplifying the optical signal from the EA modulator wherein the second erbium doped fiber (EDF) having a length of several meters and a diameter greater than or equal to thirty-five micrometers.
    • 一种用于放大激光投射的放大激光源,其包括由脉冲发生器调制的二极管激光源,所述脉冲发生器施加高于和低于用于投影调制光信号的阈值电压的低和低的电压。 激光源还包括用于放大经调制的光信号的第一掺铒光纤(EDF)。 激光源还包括一组布拉格光栅,用于从第一EDF接收经调制的光信号,用于反射特定于光栅的脉冲失真减小的光信号。 激光源还包括与脉冲发生器同步的电吸收(EA)调制器,以增加光信号的消光比。 激光源还包括用于接收和放大来自EA调制器的光信号的第二掺铒光纤(EDF),其中第二掺铒光纤(EDF)的长度为几米,直径大于或等于三十五 微米。
    • 67. 发明申请
    • Multi-antenna solution for mobile handset
    • 移动手机的多天线解决方案
    • US20060233221A1
    • 2006-10-19
    • US10540791
    • 2003-12-22
    • Luzhou XuYanzhong DaiJian LiuRonghui WuMin ShiYun YuanYan Li
    • Luzhou XuYanzhong DaiJian LiuRonghui WuMin ShiYun YuanYan Li
    • H04B1/00
    • H04B7/0897H04B7/022H04B7/0613H04B7/084H04B7/0854
    • A mobile terminal with multi-antenna (200) based on CDMA, comprises a plurality of groups of radio frequency signal processing modules (202), for transforming received multi-channel radio frequency signals based on CDMA to multi-channel baseband signals; a multi-antenna module (206), for combining said multi-channel baseband signals output from the plurality of groups of radio frequency signal processing modules into single-channel baseband signals according to control information received one-off when said multi-antenna module enables a multi-antenna baseband processing; and a baseband processing module (203), for providing said control information to said multi-antenna module and baseband processing said single-channel baseband signals outputted from said multi-antenna module.
    • 一种基于CDMA的具有多天线(200)的移动终端包括多组射频信号处理模块(202),用于将接收到的基于CDMA的多频道射频信号变换为多信道基带信号; 多天线模块(206),用于当所述多天线模块使能时,将根据多次接收的控制信息将从多组射频信号处理模块输出的所述多通道基带信号组合为单通道基带信号 多天线基带处理; 以及基带处理模块(203),用于向所述多天线模块提供所述控制信息,以及对从所述多天线模块输出的所述单信道基带信号进行基带处理。
    • 69. 发明授权
    • Integrated polarization analyzer for fiber telecommunications
    • 光纤通信集成偏振分析仪
    • US06927845B2
    • 2005-08-09
    • US10288353
    • 2002-11-04
    • Jian Liu
    • Jian Liu
    • G01J4/04G01N21/21G01N21/00
    • G01N21/211G01J4/04
    • A method is disclosed in this invention for designing an optical polarization analyzer for measuring a state of polarization (SOP) of an optical signal transmitted over a particular range of wavelengths. The method includes a step of selecting a corner cube having a specific input medium refraction index and comprising four triangular surfaces and attaching four optical detectors on each of the four surfaces for sequentially absorbing and then reflecting an incident light from one detector to a next detector wherein said incident light is within the particular range of wavelengths. The method further includes a step of selecting a coating to coat over each of the detectors disposed on each of the four surfaces by selecting a coating material and designing an accurately controlled thickness of each of the coatings for controlling a absorption/reflectance ratio for each of the detectors whereby an optimal sensitivity of photopolarimeter is achieved.
    • 在本发明中公开了一种用于设计用于测量在特定波长范围上传输的光信号的偏振态(SOP)的光学偏振分析器的方法。 该方法包括选择具有特定输入介质折射率并包括四个三角形表面的角立方体的步骤,并且在四个表面中的每一个上附接四个光学检测器,以顺序吸收然后将来自一个检测器的入射光反射到下一个检测器,其中 所述入射光在特定的波长范围内。 该方法还包括通过选择涂层材料并设计每个涂层的精确控制的厚度来选择涂覆在布置在四个表面中的每一个上的每个检测器上的涂层以控制每个涂层的吸收/反射率的步骤 由此获得光偏振计的最佳灵敏度的检测器。