公开(公告)号：US06414473B1

公开(公告)日：2002-07-02

申请号：US09617242

申请日：2000-07-14

申请人： Xi-Cheng Zhang ,  Zhiping Jiang

发明人： Xi-Cheng Zhang ,  Zhiping Jiang

IPC分类号： G01R3100

CPC分类号： G01R29/0885

摘要： Characterization of free-space electromagnetic energy pulses (15) using a chirped optical probe beam is provided. An electro-optic or magneto-optic crystal (14) is positioned such that the free-space radiation and chirped optical probe signal co-propagate, preferably in a co-linear common direction, through the crystal where a temporal waveform of the free-space radiation is linearly encoded onto a wavelength spectrum of the chirped optical probe signal. The temporal waveform of the free-space radiation is then reconstructed using, for example, a dynamic subtraction of the spectral distribution of the chirped optical probe signal without modulation from the spectral distribution of the chirped optical probe signal with modulation by the free-space radiation.

摘要翻译： 提供了使用啁啾光学探针光束的自由空间电磁能脉冲（15）的表征。 定位电光或磁光晶体（14），使得自由空间辐射和啁啾光学探针信号优选地以共线共同方向共同传播通过晶体，其中自由空间辐射和啁啾光学晶体 空间辐射被线性编码在啁啾光学探针信号的波长谱上。 然后使用例如通过自由空间辐射调制的啁啾光学探针信号的频谱分布的啁啾光学探针信号的频谱分布的动态减法来重建自由空间辐射的时间波形 。

公开(公告)号：US20220019023A1

公开(公告)日：2022-01-20

申请号：US16929996

申请日：2020-07-15

申请人： Yang Ren ,  Vien Van ,  Zhiping Jiang

发明人： Yang Ren ,  Vien Van ,  Zhiping Jiang

IPC分类号： G02B6/12

摘要： Methods and devices that provide a variable-bandwidth optical filter with frequency tuning are disclosed. A universal variable bandwidth optical filter architecture is disclosed, based on microring resonators that can vary both operation wavelength and bandwidth with no extra complexity relative to conventional wavelength tunable filters. The filter architecture provides a universal filter design for any arbitrary shape of filter response, such as second-order, fourth-order, sixth-order, and so on. The filter characteristics—insertion loss, in-band ripple, and out-of-band rejection level—may be maintained over the bandwidth tuning range. There is no need for extra heaters to tune the filter's operating bandwidth, as the same heaters used to tune the filter frequency can be used to tune filter bandwidth. The device can be used as an add/drop filter.

公开(公告)号：US10701465B2

公开(公告)日：2020-06-30

申请号：US16173377

申请日：2018-10-29

申请人： Zhiping Jiang

发明人： Zhiping Jiang

IPC分类号： H04Q11/00 ,  G02B6/35 ,  G02B6/38 ,  H04J14/02

摘要： Methods and apparatus are provided that configure a wider passband for one or more channels of a wavelength selective switch (WSS). When a wider passband route WSS and a normal width passband select switch are used in combination, crosstalk that may be introduced by the wider passband route WSS can be mitigated. The wider passband WSS can provide a passband that allows a maximum bandwidth of signal to pass on a given channel and avoid signal being attenuated at the channel edges, especially when channels have a reduced channel spacing, such as with 50 GHz spacing.

公开(公告)号：US10298318B1

公开(公告)日：2019-05-21

申请号：US15843897

申请日：2017-12-15

申请人： Zhiping Jiang

发明人： Zhiping Jiang

IPC分类号： H04B10/61 ,  H04B10/077 ,  H04L1/00 ,  H04J14/02

摘要： The inclusion of a pilot tone as a modulation of an optical data signal reduces the optical signal to noise ratio (OSNR). Methods and apparatus for receiving an optical signal are provided that compensate for at least a portion of the pilot tone modulation to reduce the pilot tone induced OSNR penalty. An initial waveform is processed to generate a compensated waveform, the processing including dispersion compensation. An intensity waveform is calculated in accordance with the compensated waveform. The intensity waveform is processed to obtain a pilot tone frequency, a modulation depth, and a phase of the pilot tone. The compensated waveform is multiplied with a pilot tone compensation factor that is a function of the pilot tone frequency, the modulation depth, and the phase of the pilot tone to generate a modified compensated waveform. A symbol carried by the modified compensated waveform is determined.

公开(公告)号：US10243722B2

公开(公告)日：2019-03-26

申请号：US15358734

申请日：2016-11-22

申请人： Zhiping Jiang

发明人： Zhiping Jiang

IPC分类号： H04B10/00 ,  H04L7/00 ,  H04Q11/00 ,  H04J14/02

摘要： Aspects of the present application provide an optical interconnecting network architecture. The architecture involves a central node coupled to multiple access nodes (ANs), in which the central node includes a pair of optical couplers used to combine optical signals received from the ANs and broadcast the combined optical signals to all destination ANs. A coherent detection receiver in each of the ANs receives the combined optical signals and selectively detects a wavelength carrying the optical signal assigned to that AN by tuning a local oscillator (LO) wavelength of the coherent detection receiver.

公开(公告)号：US10003426B2

公开(公告)日：2018-06-19

申请号：US15336061

申请日：2016-10-27

申请人： Zhiping Jiang

发明人： Zhiping Jiang

IPC分类号： H04B10/077 ,  H04J14/02 ,  H04B10/079 ,  H04B10/548 ,  H04L5/00

CPC分类号： H04J14/021 ,  H04B10/0773 ,  H04B10/0775 ,  H04B10/07955 ,  H04B10/07957 ,  H04B10/548 ,  H04B2210/075 ,  H04J14/0213 ,  H04J14/0221 ,  H04J14/0256 ,  H04L5/0008 ,  H04L5/0048 ,  H04L27/0004 ,  H04L27/0014 ,  H04L27/02

摘要： Systems and methods for performing wavelength conflict detection are provided. These are to detect situations in optical networks where two instances of the same wavelength channel have been added. Wavelength conflict detection is performed for each of a plurality of possible wavelength channels that could be present in an optical signal, each wavelength channel that is present modulated by a pilot tone signal with a respective pilot tone frequency, the pilot tone signal carrying M-ary pilot tone data, M=2n, n≥1, with a respective one of M different sequences being used to represent each of M possible data values over a data value period. Conflict detection for each wavelength channel involves performing correlation peak detection using each of the M different sequences to determine correlation peaks for each of the M different sequences, and, based on the determined correlation peaks, determining whether multiple instances of the wavelength channel are present in the optical signal.

公开(公告)号：US09941960B2

公开(公告)日：2018-04-10

申请号：US15189330

申请日：2016-06-22

申请人： Zhiping Jiang ,  Jianhong Ke

发明人： Zhiping Jiang ,  Jianhong Ke

IPC分类号： H04B17/00 ,  H04B10/079 ,  H04B10/54 ,  H04J14/02

CPC分类号： H04B10/07955 ,  H04B10/077 ,  H04B10/0775 ,  H04B10/541 ,  H04B2210/075 ,  H04J14/021

摘要： An aspect of the disclosure provides methods and systems for encoding a data bit stream onto a pilot tone signal. Another aspect of the disclosure provides method and systems for pilot tone detection. In both, a coded pilot tone signal is encoded using a code sequence m1 for each bit value of 1 (b1) and a code sequence m0 for each bit value of 0 (b0) of a data bit stream including pilot tone data bit values of 1 (b1) and bit values of 0 (b0), with each code sequence having multiple coding bits in the duration of each bit. Pilot tone detection can further include decoding each code sequence of the coded pilot tone signal using a plurality of successive overlapping measurement windows. In some embodiments each measurement window is of the same duration, being of the duration of each code sequence, and detecting each code sequence comprises selecting one of the plurality of measurement windows to represent a complete code sequence.

公开(公告)号：US09705628B2

公开(公告)日：2017-07-11

申请号：US15258661

申请日：2016-09-07

申请人： Zhiping Jiang ,  Zhuhong Zhang ,  Xuefeng Tang

发明人： Zhiping Jiang ,  Zhuhong Zhang ,  Xuefeng Tang

IPC分类号： H04B10/00 ,  H04J14/02 ,  H04B10/077 ,  H04B10/25 ,  H04B10/516 ,  H04J14/06

CPC分类号： H04J14/0276 ,  H04B10/077 ,  H04B10/0775 ,  H04B10/2504 ,  H04B10/516 ,  H04B2210/075 ,  H04J14/06

摘要： The present applies to digital wavelength converters that convert, independently of the format in which optical data may be encoded, an input waveform at a first wavelength to an output waveform at a second wavelength. When operating in an environment where an input waveform has a pilot tone associated thereto, the method and system of the present disclosure allows for the removal of the pilot tone from the input waveform, and also allows for the addition of another pilot to the output waveform.

公开(公告)号：US20120321319A1

公开(公告)日：2012-12-20

申请号：US13164226

申请日：2011-06-20

申请人： Zhiping Jiang ,  Jian Zhong

发明人： Zhiping Jiang ,  Jian Zhong

IPC分类号： H04J14/02

CPC分类号： H04B10/0793 ,  H04B10/294 ,  H04J14/0201 ,  H04J14/0221

摘要： An apparatus comprising one or more optical amplifiers coupled to an optical link and configured to amplify a plurality of Wavelength Division Multiplexing (WDM) channels that are transmitted at a plurality of wavelengths on the optical link, and a processor coupled to the optical link and configured to add, delete, or both a plurality of WDM channels in the optical link based on an allowed power ratio indication for the WDM channels, wherein the allowed power ratio indication is calculated based on a plurality of gain change representations for the WDM channels at a plurality of power ratios and on a link budget requirement for the optical link.

摘要翻译： 一种装置，包括耦合到光链路并被配置为放大在光链路上以多个波长发送的多个波分复用（WDM）信道的一个或多个光放大器，以及耦合到光链路并配置的处理器 基于用于WDM信道的允许功率比指示来添加，删除或同时在所述光链路中的多个WDM信道，其中，基于对于所述WDM信道的WDM信道的多个增益改变表示来计算所述允许功率比指示， 多个功率比和光链路的链路预算需求。

公开(公告)号：US20100310933A1

公开(公告)日：2010-12-09

申请号：US12455885

申请日：2009-06-09

申请人： Zhiping Jiang ,  Rimma Sirotina ,  Nikolay Iltchev

发明人： Zhiping Jiang ,  Rimma Sirotina ,  Nikolay Iltchev

IPC分类号： H01M6/04 ,  H01M4/58

CPC分类号： H01M6/168 ,  H01M4/38 ,  H01M4/466 ,  H01M4/5815 ,  H01M6/166 ,  H01M2300/0025 ,  H01M2300/0037

摘要： An improved electrolyte for a cell having an anode comprising magnesium or magnesium alloy. The cell's cathode may desirably include iron disulfide (FeS2) as cathode active material. The improved electrolyte comprises a magnesium salt, preferably magnesium perchlorate dissolved in an organic solvent which preferably includes acetonitrile or mixture of tetrahydrofuran and propylene carbonate. The electrolyte includes an additive to retard the buildup of deleterious passivation coating on the magnesium anode surface, thereby enhancing cell performance. Such additive may preferably include 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4), 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6), lithium hexafluorophosphate (LiPF6), or aluminum chloride (AlCl3)

摘要翻译： 用于具有包含镁或镁合金的阳极的电池的改进的电解质。 电池的阴极可以理想地包括二硫化铁（FeS 2）作为阴极活性材料。 改进的电解质包括镁盐，优选溶解在有机溶剂中的高氯酸镁，优选包括乙腈或四氢呋喃和碳酸亚丙酯的混合物。 电解质包括一种添加剂，用于延缓镁阳极表面上有害钝化涂层的积聚，从而提高电池性能。 这种添加剂可优选包括1-丁基-3-甲基咪唑鎓四氟硼酸盐（BMIMBF4），1-丁基-3-甲基咪唑六氟磷酸盐（BMIMPF6），六氟磷酸锂（LiPF 6）或氯化铝（AlCl 3）