-
公开(公告)号：US12130539B2
公开(公告)日：2024-10-29
申请号：US17574413
申请日：2022-01-12
Applicant: Tiposi, Inc.
Inventor： Reza Ebrahimi Ghiri , Jahan Ghofraniha , Shih H Mo
CPC classification number: G02F1/3544 , G01S13/89 , G02F2203/56
Abstract: A microwave imaging system is provided. The microwave imaging system comprises a dual-comb transceiver module and a processing module. The dual comb transceiver module comprises a transmitter module for transmitting an output signal, at least one receiver module for receiving the output signal from the transmitter via a channel and for generating a first output signal, and a reference receiver module for receiving a portion of the output signal transmitted by the transmitter module via an attenuator module and for generating a second output signal. Further, one or more channel parameters associated with the microwave imaging are determined based on the first output signal and the second output signal.
-
2.发明公开公开(公告)号：US20240337897A1
公开(公告)日：2024-10-10
申请号：US18624945
申请日：2024-04-02
Inventor： Joon Tae AHN , Minje SONG , Minhyup SONG , Taehyun LEE , Seungyoung LIM , Young Jin JUNG , Gyu Dong CHOI
CPC classification number: G02F1/353 , H01S3/0057 , H01S3/0085 , G02F2203/56
Abstract: Disclosed is an optical pulse adjusting device including a pulse shaper that receives an input signal generated based on an optical frequency comb (OFC) signal and outputs a spectrum adjustment signal by adjusting an optical spectrum shape of the input signal, an optical amplifier that outputs an optical amplification signal by amplifying the spectrum adjustment signal, an optical spectrum analyzer (OSA) that outputs an information signal by comparing an optical spectrum shape of the optical amplification signal with a target optical spectrum shape, and a control circuit that outputs a comparison signal based on the information signal. The pulse shaper further receives the comparison signal and adjusts the optical spectrum shape of the input signal based on information about a difference between the optical spectrum shape of the optical amplification signal and the target optical spectrum shape, which is included in the comparison signal.
-
3.发明公开公开(公告)号：US20240328786A1
公开(公告)日：2024-10-03
申请号：US18191541
申请日：2023-03-28
Applicant: Honeywell International Inc.
Inventor： Robert Compton
CPC classification number: G01C21/165 , G01C19/58 , G02F1/3517 , H01S3/0078 , G02F2203/56
Abstract: An atomic inertial interferometer comprises a laser that emits a CW beam; a modulator that modulates the CW beam; a filter and delay mechanism that receives the modulated beam, and includes a first pathway and a second pathway longer than the first pathway; a comb generator that receives the modulated beam, and produces a frequency comb; and a comb drive coupled to the comb generator to generate a multiple of a comb repetition rate, the comb drive including a HF source coupled to a bandpass filter. A vacuum cell holds a sample of cold atoms. The frequency comb counter-propagates with respect to the modulated beam to provide velocity slicing of the cold atoms such that a given temperature distribution of the cold atoms is sliced into a plurality of narrow temperature distributions that are probed individually and in parallel, to extract an interference signal from the narrow temperature distributions.
-
公开(公告)号：US12034491B2
公开(公告)日：2024-07-09
申请号：US17426528
申请日：2020-01-28
Applicant: The Regents of the University of California
Inventor： Aydin Babakhani , Babak Jamali
CPC classification number: H04B10/90 , H04B10/501 , H04B10/61 , G02F2203/56
Abstract: Systems and methods in accordance with embodiments of the invention implement electronic frequency-comb detector systems. One embodiment includes an electronic frequency-comb detector, where the electronic frequency-comb detector includes: a frequency-comb generator configured to generate a frequency comb reference signal, and a heterodyne mixer. In addition, the heterodyne mixer is configured to use the frequency comb reference signal to downconvert received millimeter wave (mm-wave) and terahertz (THZ) frequency tones into an intermediate frequency (IF) signal. In a further embodiment, the electronic frequency-comb detector includes an IF amplifier, where the IF amplifier is configured to feed a spectrum analyzer configured to detect a signature of a material under test (MUT).
-
公开(公告)号：US12019353B2
公开(公告)日：2024-06-25
申请号：US18045936
申请日：2022-10-12
Applicant: HONEYWELL INTERNATIONAL INC.
Inventor： Matthew W. Puckett , Chad Hoyt , Karl Nelson , Jianfeng Wu
CPC classification number: G02F1/365 , G02F1/3542 , G02F2201/307 , G02F2203/56
Abstract: An optical frequency comb generation system includes an optical waveguide portion having a uniform width, a first chirped Bragg grating disposed at one end of the optical waveguide portion and a second chirped Bragg grating disposed at the other end of the optical waveguide portion. The first chirped Bragg grating includes at least a first periodic variation having a first refractive index and a second periodic variation having a second refractive index. The second chirped Bragg grating includes the at least first and second periodic variations. A first cavity associated with a first resonant frequency extends between the first periodic variation of the first chirped Bragg grating and the first periodic variation of the second chirped Bragg grating. A second cavity associated with a second resonant frequency extends between the second periodic variation of the first chirped Bragg grating and the second periodic variation of the second chirped Bragg grating.
-
Patent Agency Ranking
公开(公告)号：US11809061B2
公开(公告)日：2023-11-07
申请号：US17970189
申请日：2022-10-20
Applicant: President and Fellows of Harvard College , The Board of Trustees of the Leland Stanford Junior University
Inventor： Mian Zhang , Cheng Wang , Marko Loncar , Brandon Taylor Buscaino , Joseph M. Kahn
IPC: G02F1/35
CPC classification number: G02F1/3536 , G02F2203/56
Abstract: Kerr and electro-optic frequency comb generation in integrated lithium niobate devices is provided. In various embodiments, a microring resonator comprising lithium niobate is disposed on a thermal oxide substrate. The microring resonator has inner and outer edges. Electrodes are positioned along the inner and outer edges of the microring resonator. The electrodes are adapted to modulate the refractive index of the microring. A pump laser is optically coupled to the microring resonator. The microring resonator is adapted to emit an electro-optical frequency comb when receiving a pump mode from the pump laser and when the electrodes are driven at a frequency equal to a free-spectral-range of the microring resonator.
-
公开(公告)号：US11733586B2
公开(公告)日：2023-08-22
申请号：US17701952
申请日：2022-03-23
Applicant: HYPERLIGHT CORPORATION
Inventor： Mian Zhang , Christian Reimer , Kevin Luke
CPC classification number: G02F1/365 , G02F1/3551 , G02F2203/56
Abstract: An integrated electro-optic frequency comb generator based on ultralow loss integrated, e.g. thin-film lithium niobate, platform, which enables low power consumption comb generation spanning over a wider range of optical frequencies. The comb generator includes an intensity modulator, and at least one phase modulator, which provides a powerful technique to generate a broad high power comb, without using an optical resonator. A compact integrated electro-optic modulator based frequency comb generator, provides the benefits of integrated, e.g. lithium niobate, platform including low waveguide loss, high electro-optic modulation efficiency, small bending radius and flexible microwave design.
-
公开(公告)号：US20230152664A1
公开(公告)日：2023-05-18
申请号：US17920128
申请日：2021-04-22
Applicant: The Trustees of Princeton University
Inventor： Alexei GOUN , Herschel RABITZ
CPC classification number: G02F1/353 , G01S7/415 , G01S7/4816 , G02F2203/56
Abstract: Disclosed herein is the detection of dangerous dielectric materials (explosives) and dangerous non-explosive and/or prohibited items. The detection is based on a broad bandwidth nonlinear radar system, driven by a highly stable optical frequency comb. The disclosed approach allows for the spatial resolution of the interrogated object in complex settings. Detection of dangerous materials and non-explosive chemical prohibited items is disclosed. The chemicals can be identified under clothing, within boxes, or other dielectric enclosures
-
公开(公告)号：US20180307118A1
公开(公告)日：2018-10-25
申请号：US15923571
申请日：2018-03-16
Inventor： Corrado SCIANCALEPORE , Marco CASALE , Houssein EL DIRANI
IPC: G02F1/39
CPC classification number: G02F1/395 , G02F1/3536 , G02F1/365 , G02F2001/392 , G02F2201/04 , G02F2201/58 , G02F2202/101 , G02F2202/102 , G02F2203/15 , G02F2203/17 , G02F2203/56
Abstract: The invention relates to an optoelectronic device for generating a frequency comb comprising a laser source (2), a ring microresonator (3) comprising a resonant ring (20) made of a third order optically non-linear material with abnormal dispersion regime. It also comprises a spectral tuning device comprising a junction guide (30) coupled to the resonant ring, electrical biasing means (40) adapted to apply an electrical voltage to the junction, and a control unit (42) adapted to modify the value of the electrical voltage until at least one dissipative temporal soliton is formed in the resonant ring.
-
公开(公告)号：US09891500B1
公开(公告)日：2018-02-13
申请号：US15399321
申请日：2017-01-05
Applicant: City University of Hong Kong
Inventor： Sai Tak Chu , Kun Zhu
CPC classification number: G02F1/3536 , G02F1/365 , G02F2201/02 , G02F2203/15 , G02F2203/56 , G02F2203/70 , H01S3/067 , H01S3/06791 , H01S3/08013 , H01S5/0092 , H01S5/06821 , H01S5/5054
Abstract: Systems and methods which provide for the generation of optical frequency combs using a microring resonator optical frequency comb generator configuration are described. A microring resonator optical frequency comb generator configuration of embodiments comprises a plurality of fiber loop laser cavities and at least one microring cavity are utilized. For example, an optical frequency comb generator may include a first fiber loop laser cavity, a second fiber loop laser cavity that is symmetrical with the first fiber loop laser cavity, and a microring resonator that is coupled into both of the first and second fiber loop laser cavities. The microring resonator may be configured to provide a high quality factor, Q, value. The microring resonator of embodiments works together with optical bandpass filters and amplifiers in the multiple fiber loops to make the generated optical frequency comb stable and flexible.
-
-
-
-
-
-
-
-
-
Search Results
190
records
(took 0.019 seconds)
