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公开(公告)号：US09748726B1
公开(公告)日：2017-08-29
申请号：US15372935
申请日：2016-12-08
CPC分类号： H01S3/08013 , H01S3/083 , H01S3/10053 , H01S3/137 , H01S5/021 , H01S5/02248 , H01S5/1032 , H01S5/142
摘要： This invention describes algorithmic and computational approaches to optimize the design and performance of microresonator based ultra-low noise lasers including a reflector or filter comprised of multiple (≧3) microresonator rings with different ring radii coupled together through bus waveguides. The enhanced reflector/filter design optimization provides more control over the key parameters, including the suppression ratio of unwanted modes over both a wide wavelength range (supporting wide wavelength tunability) and over the narrow range around the laser wavelength (improving laser singlemode and noise performance), while also enabling the design of specific reflector/filter bandwidth and effective length (delay), supporting the design of an ultra-low noise laser with specific operating performance parameters.
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2.发明申请公开(公告)号：US20090067772A1
公开(公告)日：2009-03-12
申请号：US12234614
申请日：2008-09-19
申请人： Jacob Khurgin , Paul A. Morton
发明人： Jacob Khurgin , Paul A. Morton
CPC分类号： H01Q3/2676
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US10162117B2
公开(公告)日：2018-12-25
申请号：US14217663
申请日：2014-03-18
申请人： Paul A. Morton , Jacob Khurgin
发明人： Paul A. Morton , Jacob Khurgin
摘要： 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.
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公开(公告)号：US20110019955A1
公开(公告)日：2011-01-27
申请号：US12897219
申请日：2010-10-04
申请人： Paul A. Morton , Jacob Khurgin
发明人： Paul A. Morton , Jacob Khurgin
IPC分类号： G02F1/01
CPC分类号： G02F1/011 , G02F1/0147 , G02F2201/20 , G02F2203/15 , H01Q3/26 , H01Q3/2682
摘要： This invention provides a balanced thermal approach to the tuning of an optical time delay device in order to eliminate any long-term time response of the device performance due to thermal time constants of the device, its mount, packaging or electronic temperature control circuits. The invention provides multiple ways to improve the thermal tuning speed of the balanced thermal approach. Additionally, the invention overcomes an issue of microresonator non-uniformity by operating a large group of microresonators as a ‘super-ring’ by tuning the large group together to provide a controllable group delay with large bandwidth.
摘要翻译： 本发明提供了调谐光学延迟器件的平衡热学方法，以便消除由于器件，其安装，封装或电子温度控制电路的热时间常数而引起的器件性能的任何长期时间响应。 本发明提供了多种方式来改善平衡热方法的热调节速度。 此外，本发明通过将大群体组合在一起来操作大群微谐振器作为“超级环”来克服微谐振器不均匀性的问题，以提供具有大带宽的可控组延迟。
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公开(公告)号：US07558450B2
公开(公告)日：2009-07-07
申请号：US12234614
申请日：2008-09-19
申请人： Jacob Khurgin , Paul A. Morton
发明人： Jacob Khurgin , Paul A. Morton
CPC分类号： H01Q3/2676
摘要： 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=ωr−Δω 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 ωr 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.
摘要翻译： 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ω=1ωω-ΔMagaga，ω=ω+ΔMaga，其中，Deltaomega是与中值频率的偏差。 第三谐振器在光载波ω10处的相位和等于（ω-ω-ω）Td的中值频率ω的相位之间提供相位延迟差，其中Td是时间延迟。 当光信号在光电检测器处被下变频时，该器件对输出信号中的所有频率分量提供相等的群延迟，并且对于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的天线元件的时间延迟的应用。
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公开(公告)号：US08406586B2
公开(公告)日：2013-03-26
申请号：US12897219
申请日：2010-10-04
申请人： Paul A. Morton , Jacob Khurgin
发明人： Paul A. Morton , Jacob Khurgin
CPC分类号： G02F1/011 , G02F1/0147 , G02F2201/20 , G02F2203/15 , H01Q3/26 , H01Q3/2682
摘要： This invention provides a balanced thermal approach to the tuning of an optical time delay device in order to eliminate any long-term time response of the device performance due to thermal time constants of the device, its mount, packaging or electronic temperature control circuits. The invention provides multiple ways to improve the thermal tuning speed of the balanced thermal approach. Additionally, the invention overcomes an issue of microresonator non-uniformity by operating a large group of microresonators as a ‘super-ring’ by tuning the large group together to provide a controllable group delay with large bandwidth.
摘要翻译： 本发明提供了调谐光学延迟器件的平衡热学方法，以便消除由于器件，其安装，封装或电子温度控制电路的热时间常数而引起的器件性能的任何长期时间响应。 本发明提供了多种方式来改善平衡热方法的热调节速度。 此外，本发明克服了通过将大组的微谐振器作为超级环通过一起调谐大组来提供具有大带宽的可控组延迟的微谐振器不均匀性的问题。
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公开(公告)号：US20110164299A1
公开(公告)日：2011-07-07
申请号：US13044669
申请日：2011-03-10
申请人： Paul A. Morton , Jacob Khurgin
发明人： Paul A. Morton , Jacob Khurgin
IPC分类号： G02B26/06
CPC分类号： G02B6/29395 , G02B6/2861 , G02B6/29343 , G02B6/29398 , G02B6/4286 , G02F1/011 , G02F1/0147 , G02F2201/20 , G02F2203/055 , G02F2203/15 , H01Q3/26 , H01Q3/2676 , H01Q3/2682
摘要： This invention provides an optical device comprising a large group of non-uniform resonators operating cumulatively as a ‘super-ring’ to provide a controllable group delay with large bandwidth. The super-ring tuning is performed by a single control. The device may include two super-rings, each includes a large number of resonators with a resonant frequencies centered around ω1 and ω2 respectively. The invention provides multiple ways to improve the delay duration, bandwidth and the tuning speed, and overcomes the issue of non-uniformity of resonance frequency for devices incorporating multiple optical resonators.
摘要翻译： 本发明提供了一种光学装置，其包括大量非均匀谐振器作为“超级环”累积运行，以提供具有大带宽的可控组延迟。 超级环调整由单个控制执行。 该装置可以包括两个超级环，每个超级环分别包括大量谐振器，谐振频率分别以ω1和ω2为中心。 本发明提供多种方式来改善延迟持续时间，带宽和调谐速度，并且克服了包含多个光谐振器的装置的谐振频率不均匀性的问题。
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公开(公告)号：US10128952B2
公开(公告)日：2018-11-13
申请号：US15399563
申请日：2017-01-05
申请人： Paul A. Morton , Jacob Khurgin
发明人： Paul A. Morton , Jacob Khurgin
IPC分类号： H04B10/2575 , H04B10/40 , H04B10/50 , H04B10/516 , H04Q5/00 , H04Q11/00
摘要： High-performance ultra-wideband Receive Phased Array Sensors (Rx-PAS) are disclosed, which have unique capabilities, enabled through photonic integrated circuits and novel optical architectures. Unique capabilities for a Rx-PAS are provided by wafer scale photonic integration including heterogeneous integration of III-V materials and ultra-low-loss silicon nitride waveguides. Novel aspects include optical multiplexing combining wavelength division multiplexing and/or a novel extension to array photodetectors providing the capability to combine many RF photonic signals with very low loss. The architecture includes tunable optical down-conversion, moving a chosen frequency band to baseband with high dynamic range; creating also a single frequency hand channelizer, which is also expanded to create a multiple tunable frequency band channelizer. Simultaneous multi-channel beamforming is achieved through optical power splitting of optical signals to create multiple exact replicas of the signals that are then processed independently.
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公开(公告)号：US09559484B2
公开(公告)日：2017-01-31
申请号：US14828846
申请日：2015-08-18
申请人： Paul A. Morton , Jacob Khurgin
发明人： Paul A. Morton , Jacob Khurgin
CPC分类号： H01S3/083 , H01S3/10053 , H01S5/021 , H01S5/1032 , H01S5/142
摘要： This invention provides ultra-low noise lasers with exceptional performance through the use of ultra-low loss microresonator based filters/reflectors including multiple (≧3) microresonator rings with different ring radii. The ultra-low loss microresonators provide a long effective laser cavity length enabling very narrow linewidth laser operation, with multiple (≧3) microresonators providing extremely high selectivity of the lasing mode over a very wide wavelength range; supporting single wavelength and widely tunable wavelength laser operation. The highly selective and also low loss filter/reflector supports high output power operation of the lasers.
摘要翻译： 本发明通过使用具有不同环形半径的多个（≥3）微谐振器环的基于超低损耗微谐振器的滤波器/反射器来提供具有出色性能的超低噪声激光器。 超低损耗微谐振器提供长效的激光腔长度，可实现非常窄的线宽激光操作，多个（≥3）微谐振器在非常宽的波长范围内提供极高的激光模式选择性; 支持单波长和广泛可调波长激光操作。 高选择性和低损耗滤波器/反射器支持激光器的高输出功率操作。
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公开(公告)号：US09507238B2
公开(公告)日：2016-11-29
申请号：US14831071
申请日：2015-08-20
申请人： Jacob Khurgin , Paul A. Morton
发明人： Jacob Khurgin , Paul A. Morton
CPC分类号： G02F1/2257 , G02F1/2255 , G02F2001/215
摘要： The invention provides a new linearized electro-optic modulator in which linearization is achieved by modulating the index of a Bragg grating reflector placed in the arm(s) of a Michelson Interferometer. This grating-assisted Michelson Interferometer (GAMI) modulator operates as either an intensity or amplitude modulator, and is shown to significantly improve the linearity of microwave photonics links. Furthermore, this modulator improves the performance of optical communication systems using advanced modulation formats.
摘要翻译： 本发明提供了一种新的线性化电光调制器，其中通过调制放置在迈克尔逊干涉仪的臂中的布拉格光栅反射器的折射率来实现线性化。 该光栅辅助迈克尔逊干涉仪（GAMI）调制器作为强度或幅度调制器工作，并显示出显着提高微波光子学链路的线性度。 此外，该调制器提高了使用高级调制格式的光通信系统的性能。
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