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    Light source for generating an output signal having spaced apart frequencies
    4.
    发明授权
    Light source for generating an output signal having spaced apart frequencies 有权
    用于产生具有间隔开的频率的输出信号的光源

    公开(公告)号：US07315697B2

    公开(公告)日：2008-01-01

    申请号：US10173579

    申请日：2002-06-18

    申请人： Israel Smilanski ,  Isaac Shpantzer ,  Jacob B. Khurgin ,  Nadejda Reingand ,  Pak Shing Cho ,  Yaakov Achiam

    发明人： Israel Smilanski ,  Isaac Shpantzer ,  Jacob B. Khurgin ,  Nadejda Reingand ,  Pak Shing Cho ,  Yaakov Achiam

    IPC分类号： H04J14/02 ,  H04B10/04

    CPC分类号： H04J14/005 ,  H04B10/2543 ,  H04B10/2563 ,  H04B10/2572 ,  H04B10/505 ,  H04B10/508 ,  H04J14/02

    摘要： A multiple wavelength light source generates an output signal having a comb of accurately spaced apart frequencies with variable free spectral range in the C-band of optical fiber communication. The light source employs an electro-optical modulator (EOM) driven by a signal generator which modulates with EOM with multiple modulation frequencies to widen the output spectrum of signal. The EOM has a crystal provided with a waveguide. The waveguide may be doped with a rare-earth metal to impart gain properties to equalize the intensities of the comb. In one preferred embodiment, Er, Yt or other doping elements provide the gain property to waveguides. The crystal is also provided with periodically poled structure, and this may be engineered so as to form domains of unequal widths to improve the efficiency of modulation. The output signal from the light source may be split and presented to a bank of filters to create a multiple signals, each signal having one of the spaced apart frequencies. The output signals may be used as channels to be modulated by data and then combined in dense wavelength division multiplexing system, or may be used as a soliton source in time-division multiplexed communication systems.

    摘要翻译： 多波长光源在光纤通信的C波段中产生具有可变自由光谱范围的精确间隔开的频率梳的梳状输出信号。 光源采用由信号发生器驱动的电光调制器（EOM），该调制器利用具有多个调制频率的EOM进行调制，以加宽信号的输出频谱。 EOM具有配有波导的晶体。 波导可以掺杂稀土金属以赋予增益特性以均衡梳子的强度。 在一个优选实施例中，Er，Yt或其它掺杂元件为波导提供增益特性。 晶体还具有周期性极化结构，并且这可以被设计成形成不等宽度的域以提高调制效率。 来自光源的输出信号可以被分离并呈现给一组滤波器以产生多个信号，每个信号具有间隔开的频率之一。 输出信号可以用作要由数据调制的信道，然后在密集波分复用系统中组合，或者可以用作时分多路复用通信系统中的孤立源。

    Method and system for acoustically tuning a light source
    6.
    发明授权
    Method and system for acoustically tuning a light source 有权
    声源调谐光源的方法和系统

    公开(公告)号：US06671425B1

    公开(公告)日：2003-12-30

    申请号：US10173581

    申请日：2002-06-18

    申请人： Jacob B. Khurgin ,  Nadejda Reingand ,  Isaac Shpantzer ,  Israel Smilanski ,  Pak Shing Cho

    发明人： Jacob B. Khurgin ,  Nadejda Reingand ,  Isaac Shpantzer ,  Israel Smilanski ,  Pak Shing Cho

    IPC分类号： G02F1335

    CPC分类号： H04J14/005 ,  G02F1/125 ,  G02F1/21 ,  G02F2001/212 ,  H01S3/0635 ,  H01S3/0637 ,  H01S3/1068 ,  H01S3/1608 ,  H01S3/2383

    摘要： The present invention relates to an integrated light source having first and second optical waveguides defining a first optical coupling region for coupling light therebetween. At least one of the optical waveguides includes a gain medium configured to emit light upon irradiation. The light source also includes a first acoustic wave source to subject the first optical coupling region to acoustic waves having a longitudinal frequency &ohgr;AC1, whereby a frequency of light propagating along one of the first and second waveguides differs from a frequency of light propagating along the other waveguide by an amount by an amount &ohgr;AC1.

    摘要翻译： 本发明涉及具有第一和第二光波导的集成光源，其限定用于在其间耦合光的第一光耦合区域。 光波导中的至少一个包括被配置为在照射时发光的增益介质。 光源还包括第一声波源，用于使第一光耦合区域具有纵向频率ωgaAC1的声波，由此沿着第一和第二波导中的一个传播的光的频率不同于沿另一个传播的光的频率 波导量的量为ωgaAC1。

    Coherent optical detector and coherent communication system and method
    8.
    发明授权
    Coherent optical detector and coherent communication system and method 有权
    相干光检测器和相干通信系统及方法

    公开(公告)号：US07327913B2

    公开(公告)日：2008-02-05

    申请号：US10669130

    申请日：2003-09-22

    申请人： Isaac Shpantzer ,  Arkady Kaplan ,  Aviv Salamon ,  Yaakov Achiam ,  Jacob B. Khurgin ,  Michael Tseytlin ,  Pak Shing Cho ,  Arthur Greenblatt ,  Christopher Kerr ,  Geoffrey Harston

    发明人： Isaac Shpantzer ,  Arkady Kaplan ,  Aviv Salamon ,  Yaakov Achiam ,  Jacob B. Khurgin ,  Michael Tseytlin ,  Pak Shing Cho ,  Arthur Greenblatt ,  Christopher Kerr ,  Geoffrey Harston

    IPC分类号： G02B6/12 ,  G02B6/26 ,  G02F1/03 ,  G02F1/07 ,  H04B10/06

    CPC分类号： H04B10/50 ,  G02B6/12004 ,  G02B6/12007 ,  G02B2006/12147 ,  H04B10/60 ,  H04B10/61 ,  H04B10/613 ,  H04B10/614 ,  H04B10/6162 ,  H04B10/63 ,  H04J14/005 ,  H04J14/02

    摘要： An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides. The first and second waveguides connect one of the outputs of the first or second coupler and one of the inputs of the third or fourth couplers. The first, second, third and fourth couplers, the two crossing waveguides and the phase shifter are each formed as part of a single planar chip made of an electro-optical material.

    摘要翻译： 光学装置设置有第一和第二输入。 耦合的第一耦合耦合到第一输入并且产生至少第一和第二输出。 第二耦合器耦合到第二输入并且产生至少第一和第二输出。 第三耦合器耦合到第一耦合器的第一输出端和第二耦合器的第一输出端。 第四耦合器耦合到第一耦合器的第二输出端和第二耦合器的第二输出端。 第一和第二交叉波导具有被选择的角度，以最小化第一和第二交叉波导之间的串扰和损耗。 第一交叉波导将来自第一耦合器的第一或第二输出中的一个与第四耦合器的输入连接。 第二交叉波导将来自第二耦合器的第一或第二输出中的一个与第三耦合器的输入连接。 第一移相器耦合到第一和第二波导。 第一和第二波导连接第一或第二耦合器的输出之一和第三或第四耦合器的输入之一。 第一，第二，第三和第四耦合器，两个交叉波导和移相器各自形成为由电光材料制成的单个平面芯片的一部分。

    Coherent photothermal interferometric spectroscopy system and method for chemical sensing
    10.
    发明授权
    Coherent photothermal interferometric spectroscopy system and method for chemical sensing 有权
    相干光热干涉光谱系统和化学感测方法

    公开(公告)号：US07277178B2

    公开(公告)日：2007-10-02

    申请号：US10947640

    申请日：2005-01-13

    申请人： Isaac Shpantzer ,  Jacob B. Khurgin ,  Pak Shing Cho ,  Yaakov Achiam

    发明人： Isaac Shpantzer ,  Jacob B. Khurgin ,  Pak Shing Cho ,  Yaakov Achiam

    IPC分类号： G01B9/02 ,  G01J3/45

    CPC分类号： G01N21/171 ,  G01J3/4338 ,  G01N21/39 ,  G01N21/65 ,  G01N2021/655

    摘要： A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical at a remote location. A first light source assembly is included that emits a first beam. The first beam has one or more wavelengths that interact with the chemical and change a refractive index of the chemical. A second light source produces a second beam. The second beam interacts with the chemical resulting in a third beam with a phase change that corresponds with the change of the refractive index of the chemical. A detector system is positioned remote from the chemical to receive at least a portion of the third beam. The detector system provides information on a phase change in the third beam relative to the second beam that is indicative of at least one of, absorption spectrum and concentration of the chemical.

    摘要翻译： 公开了一种光热干涉光谱系统，其提供关于远程位置处的化学物质的信息。 包括发射第一光束的第一光源组件。 第一光束具有与化学物质相互作用并改变化学物质折射率的一种或多种波长。 第二光源产生第二光束。 第二束与化学物质相互作用，导致具有与化学物质的折射率变化相对应的相变的第三光束。 检测器系统定位成远离化学品以接收第三束的至少一部分。 检测器系统提供关于相对于第二光束的第三光束相位变化的信息，其指示化学品的吸收光谱和浓度中的至少一个。