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    • 4. 发明申请
    • Uncooled Operation of Microresonator Devices
    • 微机电设备的未冷却运行
    • US20160161676A1
    • 2016-06-09
    • US14217663
    • 2014-03-18
    • Paul A. MortonJacob Khurgin
    • Paul A. MortonJacob Khurgin
    • G02B6/293G02B6/42G02B6/28
    • G02B6/29395G02B6/2861G02B6/29343G02B6/29398G02B6/4286G02F1/011G02F1/0147G02F2201/20G02F2203/055G02F2203/15H01Q3/26H01Q3/2676H01Q3/2682
    • This invention removes the need to provide temperature control for an optical time delay chip, which is usually provided by a thermo-electric-cooler, in order to significantly reduce the power dissipation of the device and allow ‘uncooled’ operation. Uncooled operation is achieved by monitoring the temperature of the chip, and changing the tuning of each microresonator within the device in order to continue providing the required time delay as the temperature is varied. This invention takes advantage of the fact that microresonators provide a series of resonant wavelengths over a wide wavelength range, so that the closest resonance wavelength below the operating wavelength can always be tuned up to that wavelength. When the device temperature changes, this is accounted for by both the choice of resonance wavelengths and the tuning for each of the microresonators in the device, in order to keep the correct tunable delay.
    • 本发明消除了对通常由热电冷却器提供的光学延迟时间芯片提供温度控制的需要,以便显着地降低装置的功率耗散并允许“非制冷”操作。 通过监测芯片的温度以及改变装置内的每个微谐振器的调谐来实现未冷却的操作,以便随着温度的变化继续提供所需的时间延迟。 本发明利用了微谐振器在宽波长范围内提供一系列谐振波长的事实,使得低于工作波长的最近的共振波长可以总是被调谐到该波长。 当器件温度变化时,这通过谐振波长的选择和器件中每个微谐振器的调谐两者来考虑,以保持正确的可调延迟。
    • 8. 发明申请
    • MICROWAVE PHOTONIC DELAY LINE WITH SEPARATE TUNING OF OPTICAL CARRIER
    • MICROWAVE光电延迟线与光载波分离调谐
    • US20090067772A1
    • 2009-03-12
    • US12234614
    • 2008-09-19
    • Jacob KhurginPaul A. Morton
    • Jacob KhurginPaul A. Morton
    • H01Q3/26G02F1/01
    • H01Q3/2676
    • This invention provides a tunable delay of an optical signal having a carrier with an angular frequency ω0 and a single side band having a signal band with a median angular frequency ωr. The delay line comprises at least a first, a second and a third integrated resonators coupled sequentially to a waveguide. The first and the second resonators have angular resonant frequencies ω1=ωrΔω and ω2=ωr+Δω respectively, where Δω is a deviation from the median frequency. The third resonator provides a phase delay difference between the phase at the optical carrier ω0 and the phase at the median frequency (Or equal to (ωr−ω0)Td, where Td is the time delay. The device provides an equal group delay to all frequency components in the output signal and also equal phase delay for all frequency components of an RF signal when the optical signal is downconverted at a photodetector. The device may find applications controlling the time delay to antenna elements in a phased array system.
    • 本发明提供具有角频率ω10的载波和具有中值角频率ω的信号频带的单边带的光信号的可调谐延迟。 延迟线包括至少一个顺序耦合到波导的第一,第二和第三集成谐振器。 第一和第二谐振器分别具有角共振频率ω1=ω加德尔莫多和欧米加=欧米加+多米耳加,其中德尔梅加是偏离中值频率。 第三谐振器在光载波ω0处的相位和中间频率(或等于(ωω-ω=)Td的相位之间提供相位延迟差,其中Td是时间延迟,该装置向所有 当光信号在光电检测器下变频时,RF信号的所有频率分量的相位延迟也相等。该装置可以找到控制相控阵列系统中天线元件的时间延迟的应用。