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    • 2. 发明授权
    • Single chip two-polarization quadrature synthesizer, analyser and optical communications system using the same
    • 单片双极化正交合成器,分析仪和光通信系统使用相同
    • US08285153B2
    • 2012-10-09
    • US12413161
    • 2009-03-27
    • Arkady KaplanIsaac Shpantzer
    • Arkady KaplanIsaac Shpantzer
    • G02B6/26
    • H04B10/613G02F1/225H04B10/61H04B10/611H04B10/614H04B10/6151
    • An optical beam synthesizer formed on a single chip is provided. It allows M-PSK modulation for both beam polarizations. The synthesizer comprises an optical pulse shaper and two M-PSK modulators for each polarization. A single-chip-integrated analyzer is provided to receive a modulated data. Analyzer comprises a pulse shaper operating as an optical sampler and a pair of 90-degrees optical hybrids for each polarization. Each optical hybrids mix incoming portions of the modulated beams with portions of the local oscillator beams. Both the synthesizer and the analyzer include a set of mirrors located on the back and front surfaces of the chips to create compact designs. The output beams from the analyzer are detected by a set of balanced photodiodes, and the data is recovered. It is another object of the invention to provide a communication system for data transmission having the synthesizer and the analyzer.
    • 提供了形成在单个芯片上的光束合成器。 它允许两个光束偏振的M-PSK调制。 合成器包括光脉冲整形器和用于每个极化的两个M-PSK调制器。 提供单芯片集成分析器来接收调制数据。 分析仪包括作为光学取样器操作的脉冲整形器和用于每个极化的一对90度光学混合器。 每个光混合器将调制波束的输入部分与本地振荡器波束的一部分相混合。 合成器和分析仪均包括位于芯片的背面和表面上的一组反射镜,以产生紧凑的设计。 来自分析仪的输出光束由一组平衡光电二极管检测,数据被恢复。 本发明的另一个目的是提供一种具有合成器和分析器的用于数据传输的通信系统。
    • 3. 发明授权
    • Sagnac sensor with nested waveguides
    • 具有嵌套波导的Sagnac传感器
    • US07903255B2
    • 2011-03-08
    • US12192593
    • 2008-08-15
    • Arkady Kaplan
    • Arkady Kaplan
    • G01C19/72
    • G01C19/727G01C19/72G01R33/032G02B6/12004G02B2006/1204G02B2006/12142G02B2006/12159
    • Proposed optical device is based on counter-propagating optical fields within at least one nested waveguide-cavity loop, where the part of the waveguide loop is fold into the external waveguide loop. The nesting is performed using at least one waveguide crossing section. The invention may be used in Sagnac interferometer to measure various physical parameters, including rotation rate, electric current and mechanical perturbations. The invention also addressed a measurement method of such non-reciprocal parameters of interest. Optionally, the cavity includes a gain element, and the device operation may be switched discretely or gradually between passive and active regimes, thus changing the measurement characteristics.
    • 提出的光学装置基于至少一个嵌套的波导腔环路内的反向传播的光场,其中波导管的一部分折叠到外部波导管中。 使用至少一个波导交叉部进行嵌套。 本发明可用于Sagnac干涉仪中以测量各种物理参数,包括旋转速率,电流和机械扰动。 本发明还解决了感兴趣的这种不可逆参数的测量方法。 可选地,空腔包括增益元件,并且器件操作可以在被动和有源状态之间离散地或逐渐地切换,从而改变测量特性。
    • 6. 发明授权
    • Optical sensor with distributed sensitivity
    • 具有分布灵敏度的光学传感器
    • US07646944B2
    • 2010-01-12
    • US12466128
    • 2009-05-14
    • Arkady Kaplan
    • Arkady Kaplan
    • G02B6/00G08B13/00
    • G01M11/083G02B6/2766G08B13/186
    • A system and method for a structure monitoring and locating a disturbance event is disclosed. The system includes a compact transceiver chip sending optical signals in three optical fibers that encompass the monitored structure appropriately. The fiber arrangement has different density in different parts of the monitored structure, such as, for example, critical places in the structure may have larger number of fiber loops surrounding them. All fibers transmit signals in both directions: from the transceiver to a returning point and back. A set of two detectors registers the returning signals, and a time delay between those signals is calculated, which is indicative of the disturbance event location. Polarization states of the returning signals are controlled by transceiver built-in controllers. The event location is determined with different sensitivity in different parts of the monitored structure depending on the density of fibers in these parts.
    • 公开了一种用于监测和定位扰动事件的结构的系统和方法。 该系统包括紧凑的收发器芯片,其在三根光纤中发送光信号,以适当地包含所监视的结构。 纤维布置在被监测结构的不同部分具有不同的密度,例如,结构中的关键位置可以具有围绕它们的较大数量的纤维环。 所有光纤在两个方向传输信号:从收发器到返回点和后面。 一组两个检测器记录返回信号,并计算这些信号之间的时间延迟,这表示干扰事件位置。 返回信号的极化状态由收发器内置控制器控制。 根据这些部分中的纤维密度,在被监测结构的不同部分中以不同的灵敏度确定事件位置。