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1. 发明授权

US10014649B2 Stabilized non-reciprocal fiber-ring brillouin laser source 有权
公开(公告)号：US10014649B2
公开(公告)日：2018-07-03
申请号：US15387089
申请日：2016-12-21
申请人： CALIFORNIA INSTITUTE OF TECHNOLOGY , HQPHOTONICS INC.
发明人： Jiang Li , Kerry Vahala
IPC分类号： H01S3/067 , H01S3/11 , H01S3/30 , H01S3/094 , H01S3/13 , H01S3/108 , H03B17/00
CPC分类号： H01S3/06791 , G02B6/293 , G02B6/2934 , H01S3/06708 , H01S3/094003 , H01S3/094049 , H01S3/094096 , H01S3/1086 , H01S3/1109 , H01S3/1305 , H01S3/1312 , H01S3/302 , H03B17/00
摘要： A stabilized laser source includes a fiber-ring Brillouin laser that incorporates a circulator for non-reciprocal operation and for launching of a pump optical signal. Most of the pump optical signal is launched in a forward direction and drives Brillouin laser oscillation in the backward direction, a portion of which exits via an optical coupler as the optical output of the laser source. A small fraction of the pump optical signal is launched in the backward direction via the optical coupler, and a fraction of that backward-propagating pump optical signal exits via the optical coupler as an optical feedback signal. A frequency-locking mechanism receives the optical feedback signal and controls the pump optical frequency to maintain resonant propagation of the backward-propagating pump optical signal. A second pump optical signal can be launched in the forward direction to generate a second Brillouin laser oscillation.

2. 发明授权

US11326884B2 Stimulated brillouin ring laser gyroscope with optical frequency offset of counterpropagating pump laser signals 有权
公开(公告)号：US11326884B2
公开(公告)日：2022-05-10
申请号：US16789404
申请日：2020-02-12
申请人： California Institute of Technology
发明人： Kerry Vahala , Jiang Li , Yu-Hung Lai , Myoung-Gyun Suh , Seung Hoon Lee
IPC分类号： G01C19/66 , G01C19/72 , H01S3/00 , H01S3/094 , H01S3/30 , G01C19/64
摘要： A disk resonator is pumped by counterpropagating pump signals to produce corresponding counterpropagating Brillouin laser signals. The pump laser optical frequencies are separated by a frequency offset ΔνP but excite the same nominal resonator optical mode; the Brillouin laser optical frequencies are separated by a beat frequency ΔνL with 0

3. 发明申请

US20210278215A1 STIMULATED BRILLOUIN RING LASER GYROSCOPE WITH OPTICAL FREQUENCY OFFSET OF COUNTERPROPAGATING PUMP LASER SIGNALS 有权
公开(公告)号：US20210278215A1
公开(公告)日：2021-09-09
申请号：US16789404
申请日：2020-02-12
申请人： California Institute of Technology
发明人： Kerry Vahala , Jiang Li , Yu-Hung Lai , Myoung-Gyun Suh , Seung Hoon Lee
IPC分类号： G01C19/72 , G01C19/66 , H01S3/30 , H01S3/094 , H01S3/00
摘要： A disk resonator is pumped by counterpropagating pump signals to produce corresponding counterpropagating Brillouin laser signals. The pump laser optical frequencies are separated by a frequency offset ΔνP but excite the same nominal resonator optical mode; the Brillouin laser optical frequencies are separated by a beat frequency ΔνL with 0

4. 发明授权

US10886691B2 High-Q optical resonator with monolithically integrated waveguide 有权
公开(公告)号：US10886691B2
公开(公告)日：2021-01-05
申请号：US15587897
申请日：2017-05-05
申请人： California Institute of Technology
发明人： Kerry Vahala , Kiyoul Yang , Dong Yoon Oh , Seung Hoon Lee
IPC分类号： H01S3/06 , H01S3/063 , H01S5/10 , H01S5/227 , G02F1/39 , H01S3/08 , H01S3/082 , H01S3/067 , G02B6/122 , G02B6/293
摘要： A ring optical resonator is formed on a substrate. An outer circumferential surface of the resonator substantially confines one or more circumferential resonant optical modes. The resonator is positioned above a void formed in the substrate and is supported above the void by a portion of a material layer on the substrate that extends radially inward above the void from an outer circumferential edge of the void to the outer circumferential surface of the resonator. An optical waveguide can be integrally formed on the substrate and traverses a portion of the material layer above the void. The optical waveguide and the ring optical resonator are arranged and positioned so as to establish evanescent optical coupling between them. Q-factors of 108 or more have been achieved with a silica resonator and silicon nitride waveguide integrally formed on a silicon substrate.

5. 发明申请

US20180006424A1 HIGH-Q OPTICAL RESONATOR WITH MONOLITHICALLY INTEGRATED WAVEGUIDE 审中-公开
公开(公告)号：US20180006424A1
公开(公告)日：2018-01-04
申请号：US15587897
申请日：2017-05-05
申请人： California Institute of Technology
发明人： Kerry Vahala , Kiyoul Yang , Dong Yoon Oh , Seung Hoon Lee
IPC分类号： H01S3/063 , H01S5/10 , H01S3/08 , G02F1/39 , H01S3/067 , H01S3/06 , H01S5/227 , H01S3/082
CPC分类号： H01S3/0637 , G02B6/12 , G02F1/395 , H01S3/0627 , H01S3/06791 , H01S3/08086 , H01S3/082 , H01S5/1075 , H01S5/2275
摘要： A ring optical resonator is formed on a substrate. An outer circumferential surface of the resonator substantially confines one or more circumferential resonant optical modes. The resonator is positioned above a void formed in the substrate and is supported above the void by a portion of a material layer on the substrate that extends radially inward above the void from an outer circumferential edge of the void to the outer circumferential surface of the resonator. An optical waveguide can be integrally formed on the substrate and traverses a portion of the material layer above the void. The optical waveguide and the ring optical resonator are arranged and positioned so as to establish evanescent optical coupling between them. Q-factors of 108 or more have been achieved with a silica resonator and silicon nitride waveguide integrally formed on a silicon substrate.

6. 发明申请

US20150311662A1 STABLE MICROWAVE-FREQUENCY SOURCE BASED ON CASCADED BRILLOUIN LASERS 有权
标题翻译：基于圆柱形激光的稳定的微波源
公开(公告)号：US20150311662A1
公开(公告)日：2015-10-29
申请号：US14640031
申请日：2015-03-06
申请人： CALIFORNIA INSTITUTE OF TECHNOLOGY
发明人： Kerry Vahala , Jiang Li
IPC分类号： H01S3/00 , H03B17/00 , H01S3/0941 , H01S3/30 , H01S3/067 , H01S3/08
CPC分类号： H03B17/00 , H01S3/005 , H01S3/06791 , H01S3/0809 , H01S3/09415 , H01S3/1312 , H01S3/302 , H01S5/0085
摘要： A microwave-frequency source, generating an output electrical signal at an output frequency fM, comprises a pump laser source, an optical resonator, and a photodetector. Free spectral range vFSR of the optical resonator equals an integer submultiple of a Brillouin shift frequency vB of the optical resonator (i.e., vB=MvFSR). The pump laser source is frequency-locked to a corresponding resonant optical mode of the optical resonator. Pumping the optical resonator with output of the pump laser source at a pump frequency vpump results in stimulated Brillouin laser oscillation in the optical resonator at respective first, second, and third Stokes Brillouin-shifted frequencies v1=vpump−vB, v2=vpump−2vB, and v3=vpump−3vB. The photodetector receives stimulated Brillouin laser outputs at the first and third Stokes Brillouin-shifted frequencies v1 and v3 and generates therefrom the output electrical signal at a beat frequency fM=v1−v3=2vB. The output electrical signal at the output frequency fM exhibits exceptionally low phase noise.
摘要翻译：以输出频率fM产生输出电信号的微波频率源包括泵激光源，光谐振器和光电检测器。光谐振器的自由光谱范围vFSR等于光谐振器的布里渊移位频率vB的整数倍（即vB = MvFSR）。泵激光源被频率锁定到光谐振器的对应的谐振光学模式。以泵浦频率泵浦泵浦激光源的输出的光学谐振器在相应的第一，第二和第三斯托克斯布里渊偏移频率v1 = vpump-vB，v2 = vpump-2vB的情况下导致光学谐振器中的受激布里渊激光振荡，v3 = vpump-3vB。光电检测器以第一和第三斯托克斯布里渊移位频率v1和v3接收受激布里渊激光输出，并以其频率fM = v1-v3 = 2vB产生输出电信号。输出频率fM的输出电信号表现出极低的相位噪声。

7. 发明授权

US09042003B2 Chip-based frequency comb generator with microwave repetition rate 有权
标题翻译：基于芯片的频率梳发生器，具有微波重复率
公开(公告)号：US09042003B2
公开(公告)日：2015-05-26
申请号：US14513058
申请日：2014-10-13
申请人： CALIFORNIA INSTITUTE OF TECHNOLOGY
发明人： Jiang Li , Hansuek Lee , Tong Chen , Kerry Vahala
IPC分类号： G02F2/02 , G02F1/225 , G02F1/35
CPC分类号： G02F1/353 , G02F1/2257 , G02F2201/063 , G02F2201/17 , G02F2201/58 , G02F2202/09 , G02F2202/105 , G02F2203/15 , G02F2203/54 , G02F2203/56 , G02F2203/69
摘要： A frequency comb generator fabricated on a chip with elimination of a disadvantageous reflow process, includes an ultra-high Q disk resonator having a waveguide that is a part of a wedge structure fabricated from a silicon dioxide layer of the chip. The disk resonator allows generation of a frequency comb with a mode spacing as low as 2.6 GHz and up to 220 GHz. A surface-loss-limited behavior of the disk resonator decouples a strong dependence of pumping threshold on repetition rate.
摘要翻译：制造在芯片上的消除不利的回流工艺的频率梳发生器包括具有作为由芯片的二氧化硅层制成的楔形结构的一部分的波导的超高Q盘谐振器。磁盘谐振器允许产生低至2.6GHz和高达220GHz的模式间隔的频率梳。盘式谐振器的表面损耗受限行为使抽水阈值对重复率的强烈依赖性解耦。

8. 发明申请

US20180095003A1 OPTICAL FREQUENCY MEASUREMENT AND CONTROL USING DUAL OPTICAL-FREQUENCY COMBS 审中-公开
公开(公告)号：US20180095003A1
公开(公告)日：2018-04-05
申请号：US15590005
申请日：2017-05-08
申请人： California Institute of Technology , The Regents of the University of California , National Institute of Standards and Technology
发明人： Kerry Vahala , John E. Bowers , Kartik A. Srinivasan , Scott B. Papp , Scott A. Diddams
IPC分类号： G01M11/00 , G05D25/02 , H01S3/10 , H01S3/08
CPC分类号： G01M11/333 , G05D25/02 , H01S3/08027 , H01S3/1003
摘要： A dual-comb optical-frequency comb generator includes a tunable comb-generating laser, a coarse-comb generator, a fine-comb generator, a second harmonic generator, a coarse-comb offset photodetector, a dual-comb offset photodetector, and a fine-comb photodetector. The coarse comb is self-referencing and coupled to the fine comb so as to enable absolute determination of the frequencies of the fine comb.

9. 发明申请

US20140105232A1 ON-CHIP OPTICAL REFERENCE CAVITY EXHIBITING REDUCED RESONANCE CENTER FREQUENCY FLUCTUATIONS 有权
标题翻译：片内光学参考孔展示减少谐振中心频率波动
公开(公告)号：US20140105232A1
公开(公告)日：2014-04-17
申请号：US13831692
申请日：2013-03-15
申请人： California Institute of Technology
发明人： Kerry Vahala , Tong Chen , Hansuek Lee , Myoung-Gyun Suh
IPC分类号： H01S3/00 , H01S3/13 , H01S3/08
CPC分类号： H01S3/0014 , G02B6/12007 , G02B6/2934 , H01S3/08013 , H01S3/1305 , H01S5/026 , H01S5/0687
摘要： An optical apparatus comprises a waveguide substrate and an optical reference cavity. The optical reference cavity comprises an optical waveguide formed on the waveguide substrate and arranged to form a closed loop greater than or about equal to 10 cm in length. The RMS resonance frequency fluctuation is less than or about equal to 100 Hz. The Q-factor can be greater than or about equal to 108. The optical waveguide can exhibit optical loss less than or about equal to 0.2 dB/m for propagation of an optical signal along the optical waveguide. The closed loop path can comprise two or more linked spirals greater than or about equal to 1 meter in length and can occupy an area on the waveguide substrate less than or about equal to 5 cm2.
摘要翻译：光学装置包括波导基板和光学参考腔。光学参考腔包括形成在波导衬底上并被布置成形成长度大于或等于10cm的闭环的光波导。 RMS谐振频率波动小于或等于100Hz。 Q因子可以大于或等于108.光波导可以表现出对于光信号沿着光波导传播的小于或等于0.2dB / m的光损耗。闭环路径可以包括长度大于或等于1米的两个或多个连接的螺旋，并且可以占据波导基底上的面积小于或等于5cm 2。

10. 发明授权

US09595918B2 Stable microwave-frequency source based on cascaded brillouin lasers 有权
标题翻译：基于级联布里渊激光器的稳定的微波频率源
公开(公告)号：US09595918B2
公开(公告)日：2017-03-14
申请号：US14640031
申请日：2015-03-06
申请人： California Institute of Technology
发明人： Jiang Li , Kerry Vahala
IPC分类号： H03B17/00 , H01S3/30 , H01S3/067 , H01S3/0941 , H01S3/131 , H01S5/00 , H01S3/00 , H01S3/08
CPC分类号： H03B17/00 , H01S3/005 , H01S3/06791 , H01S3/0809 , H01S3/09415 , H01S3/1312 , H01S3/302 , H01S5/0085
摘要： A microwave-frequency source, generating an output electrical signal at an output frequency fM, comprises a pump laser source, an optical resonator, and a photodetector. Free spectral range vFSR of the optical resonator equals an integer submultiple of a Brillouin shift frequency vB of the optical resonator (i.e., vB=MvFSR). The pump laser source is frequency-locked to a corresponding resonant optical mode of the optical resonator. Pumping the optical resonator with output of the pump laser source at a pump frequency vpump results in stimulated Brillouin laser oscillation in the optical resonator at respective first, second, and third Stokes Brillouin-shifted frequencies v1=vpump−vB, v2=vpump−2vB, and v3=vpump−3vB. The photodetector receives stimulated Brillouin laser outputs at the first and third Stokes Brillouin-shifted frequencies v1 and v3 and generates therefrom the output electrical signal at a beat frequency fM=v1−v3=2vB. The output electrical signal at the output frequency fM exhibits exceptionally low phase noise.
摘要翻译：以输出频率fM产生输出电信号的微波频率源包括泵激光源，光谐振器和光电检测器。光谐振器的自由光谱范围vFSR等于光谐振器的布里渊移位频率vB的整数倍（即vB = MvFSR）。泵激光源被频率锁定到光谐振器的对应的谐振光学模式。以泵浦频率泵浦泵浦激光源的输出的光学谐振器在相应的第一，第二和第三斯托克斯布里渊移位频率v1 = vpump-vB，v2 = vpump-2vB的情况下导致在光学谐振器中的受激布里渊激光振荡，v3 = vpump-3vB。光电检测器以第一和第三斯托克斯布里渊移位频率v1和v3接收受激布里渊激光输出，并以其频率fM = v1-v3 = 2vB产生输出电信号。输出频率fM的输出电信号表现出极低的相位噪声。

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