公开(公告)号：US11994786B2

公开(公告)日：2024-05-28

申请号：US17314224

申请日：2021-05-07

申请人： QphoX B.V.

发明人： Simon Groeblacher ,  Moritz Forsch ,  Robert Hugh James Stockill

IPC分类号： G02F2/02 ,  G06N10/00

CPC分类号： G02F2/02 ,  G06N10/00

摘要： The present invention is in the field of a quantum wavelength converter between a microwave signal and an optical signal and vice versa. In the converter a nanoscale cavity optomechanical circuit is used in which optomechanical cavities supporting colocalized infrared photons and microwave phonons are combined with a photonic and a phononic waveguide.

公开(公告)号：US11835844B2

公开(公告)日：2023-12-05

申请号：US17712667

申请日：2022-04-04

申请人： Mitsubishi Electric Corporation

发明人： Junya Nishioka ,  Tomohiro Akiyama ,  Yuta Takemoto ,  Toshiyuki Ando

IPC分类号： G02F2/02 ,  H01S3/067

CPC分类号： G02F2/02 ,  H01S3/067 ,  H04B2210/006

摘要： An optical frequency control device includes: a detection circuit to receive first light including a first frequency, receive second light including a second frequency, modulate the first light with a local oscillation signal, and detect a differential beat signal between the frequency of sideband light included in the modulated first light and the second frequency; a light source control circuit to change the second frequency by frequency-dividing the differential beat signal with a first frequency division number, by frequency-dividing a reference signal with a second frequency division number, and by outputting a phase error signal indicating a phase difference between the frequency-divided differential beat signal and the frequency-divided reference signal; and a signal processing unit to set each of the first frequency division number and the second frequency division number according to the set value of a frequency difference between the first frequency and the second frequency.

公开(公告)号：US20230283458A1

公开(公告)日：2023-09-07

申请号：US17653761

申请日：2022-03-07

申请人： Raytheon Company

发明人： Stacey L. Franklin ,  Kalin Spariosu

IPC分类号： H04L9/08 ,  H04L9/32 ,  G02F2/02

CPC分类号： H04L9/0852 ,  H04L9/3278 ,  H04L9/3236 ,  G02F2/02

摘要： A physically unclonable function (PUF) device is provided, comprising an excitation source providing light for exciting quantum dots (QDs); a first layer of a material having contained therein a first random distribution of first QDs of a first type that are configured to generate a first color in response to being excited by the excitation source; a second layer of a second material having contained therein a second random distribution of second QDs of a second type that are configured to generate a second color, different from the first color, in response to being excited by the first excitation source, and a detector fixedly attached to one of the first and second layers and configured for detecting a pattern of light emitted by at least one of the first QDs and the second QDs and for providing an output indicative of the detected pattern.

公开(公告)号：US20190013798A1

公开(公告)日：2019-01-10

申请号：US16028123

申请日：2018-07-05

申请人： ANALOG PHOTONICS LLC

发明人： Christopher POULTON ,  Matthew BYRD ,  Ehsan HOSSEINI ,  Erman TIMURDOGAN ,  Michael WATTS

IPC分类号： H03H17/08 ,  H01S1/00 ,  H03H11/22

CPC分类号： H03H17/08 ,  G02F2/02 ,  G02F2203/25 ,  H01S1/005 ,  H03H11/22

摘要： Aspects of the present disclosure describe systems, methods, and structures including integrated laser systems that employ external chirping structures that may advantageously include phase shifters and/or one or more filters. Further aspects of the present disclosure describe systems, methods, and structures including laser systems that employ external chirping structures that may advantageously include optical phased arrays.

公开(公告)号：US09991662B2

公开(公告)日：2018-06-05

申请号：US15653089

申请日：2017-07-18

申请人： Shanghai Jiao Tong University

发明人： Weiwen Zou ,  Hao Zhang ,  Jianping Chen

IPC分类号： G02B6/28 ,  G02B6/00 ,  H01S3/00 ,  H01S3/13 ,  H01S3/11

CPC分类号： H01S3/0057 ,  G02F2/02 ,  H01S3/1106 ,  H01S3/1305

摘要： Generator for wholly optical tunable broadband linearly chirped signal comprising a mode-locked laser, a first optical coupler, a first optical filter, a first dispersion module, a second optical filter, a second dispersion module, a tunable time delay module, a second optical coupler, an optical amplifier, and a photodetector. The generator of the present invention employs just one mode-locked laser as a light source, thus preventing instability of the generated signal resulting from independent unrelated lasers. By making use of the principle of wavelength-time mapping and by means of adjusting the center wavelength and the filter bandwidth of the first optical filter and the second optical filter, easy and flexible tuning of the center frequency and sweep bandwidth of the generated linearly chirped signal is realized. The present invention possesses a big advantage on the aspect of generating a broadband linearly chirped signal over other solutions.

公开(公告)号：US20180129116A1

公开(公告)日：2018-05-10

申请号：US15798725

申请日：2017-10-31

申请人： Elwha LLC

发明人： GLEB M. AKSELROD ,  DAVID R. SMITH

IPC分类号： G02F1/35

CPC分类号： G02F1/353 ,  B82Y20/00 ,  G02F2/02 ,  G02F2203/10

摘要： An embodiment simultaneously receives light waves emanating from an object and having first frequency components f1.1 and f1.2, and pumped monochromatic coherent light waves having a second frequency f2. The method non-linearly combines the light waves having the first frequency component f1.1 and the pumped monochromatic coherent light waves, and generates coherent light waves having a third frequency component f3.1 that is a sum of the first frequency f1.1 and the second frequency f2. The method non-linearly combines the light waves having the first frequency component f1.2 and the pumped monochromatic coherent light waves, and generates coherent light waves having a third frequency component f3.2 that is a sum of the first frequency f1.2 and the second frequency f2. The method digitizes the generated coherent light waves and outputs an image responsive to the light waves emanating from the object.

公开(公告)号：US20180129115A1

公开(公告)日：2018-05-10

申请号：US15798699

申请日：2017-10-31

申请人： Elwha LLC

发明人： GLEB M. AKSELROD ,  DAVID R. SMITH

IPC分类号： G02F1/35

CPC分类号： G02F1/353 ,  B82Y20/00 ,  G02F2/02 ,  G02F2203/10

摘要： Embodiments include an apparatus and method. An apparatus includes a metasurface that coherently upconverts light waves having a first frequency f1. A substrate forms a first plasmonic surface. A plasmonic nanoparticle forms a second plasmonic surface. A layer of a second-order nonlinear dielectric material is disposed between the first plasmonic surface and the second plasmonic surface. The metasurface has at least three plasmonic resonant modes including a first plasmonic resonant mode having a first frequency f1, a second plasmonic resonant mode having a second frequency f2, and a third plasmonic resonant mode having a third frequency f3 that is a sum of the first frequency f1 and the second frequency f2. The apparatus includes a second light propagation path from a source of pumped monochromatic coherent light waves having the second frequency f2 to the metasurface. A digital image capture device captures the generated light waves having the frequency f3.

公开(公告)号：US20180095327A1

公开(公告)日：2018-04-05

申请号：US15723925

申请日：2017-10-03

申请人： SAMSUNG DISPLAY CO., LTD.

发明人： Gakseok LEE ,  Sunyoung KWON ,  Taehoon KIM ,  Jihong BAE ,  Jieun JANG

IPC分类号： G02F1/1335

CPC分类号： G02F1/133553 ,  G02F1/133528 ,  G02F1/133617 ,  G02F1/133621 ,  G02F1/13718 ,  G02F2/02 ,  G02F2001/133638 ,  G02F2001/1351 ,  G02F2201/343 ,  G02F2203/02

摘要： A reflective liquid crystal display device includes a first substrate on which a plurality of pixel areas are defined, a second substrate facing the first substrate, a cholesteric liquid crystal (“CLC”) layer between the first substrate and the second substrate, a linear polarization member on the second substrate, a retardation member between the linear polarization member and the CLC layer, a light absorbing layer on the first substrate, and a light conversion member corresponding to the pixel area and interposed between the CLC layer and the light absorbing layer.

公开(公告)号：US20170317462A1

公开(公告)日：2017-11-02

申请号：US15653089

申请日：2017-07-18

申请人： Shanghai Jiao Tong University

发明人： Weiwen ZOU ,  Hao ZHANG ,  Jianping CHEN

IPC分类号： H01S3/00 ,  H01S3/13 ,  H01S3/11

CPC分类号： H01S3/0057 ,  G02F2/02 ,  H01S3/1106 ,  H01S3/1305

摘要： Generator for wholly optical tunable broadband linearly chirped signal comprising a mode-locked laser, a first optical coupler, a first optical filter, a first dispersion module, a second optical filter, a second dispersion module, a tunable time delay module, a second optical coupler, an optical amplifier, and a photodetector. The generator of the present invention employs just one mode-locked laser as a light source, thus preventing instability of the generated signal resulting from independent unrelated lasers. By making use of the principle of wavelength-time mapping and by means of adjusting the center wavelength and the filter bandwidth of the first optical filter and the second optical filter, easy and flexible tuning of the center frequency and sweep bandwidth of the generated linearly chirped signal is realized. The present invention possesses a big advantage on the aspect of generating a broadband linearly chirped signal over other solutions.

公开(公告)号：US20170227813A1

公开(公告)日：2017-08-10

申请号：US15499542

申请日：2017-04-27

申请人： SAMSUNG DISPLAY CO. , LTD.

发明人： JAE BYUNG PARK ,  SUNG SIK YUN ,  JONG HYUK KANG ,  HAE IL PARK ,  HYUN MIN CHO

IPC分类号： G02F1/1335 ,  G02F1/1333

CPC分类号： G02F1/133514 ,  G02F1/133377 ,  G02F1/133528 ,  G02F1/133617 ,  G02F2/02 ,  G02F2201/08 ,  G02F2202/02 ,  G02F2202/36 ,  G02F2203/055

摘要： A wide viewing angle liquid crystal display includes color filters having a quantum dot and scattering particles and liquid crystal layer disposed in a microcavity, a distance between the color filter and the liquid crystal layer being sized to minimize display deterioration due to parallax.