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公开(公告)号：US11936082B2
公开(公告)日：2024-03-19
申请号：US17006761
申请日：2020-08-28
CPC分类号： H01P1/15 , G02F1/011 , G02F1/0338 , G02F1/21 , H01P3/00 , H01P3/003 , H01P3/16 , H01P5/00 , G02F1/212 , G02F2201/16 , G02F2203/055
摘要： Microwave photonic devices use light to carry and process microwave signals over a photonic link. Light can be used as a stimulus to microwave devices that directly control microwave signals. Previous optically controlled devices suffer from large footprint, high optical power level required for switching, lack of scalability and complex integration requirements, restricting their implementation in practical microwave systems. Disclosed are monolithic optically reconfigurable integrated microwave switches (MORIMSs) built on a CMOS compatible silicon photonic chip. The disclosed scalable micrometer-scale switches provide higher switching efficiency and operate using optical power that is orders of magnitude lower than previous devices. The disclosed devices and techniques provide examples of silicon photonic platforms integrating microwave circuitry.
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公开(公告)号：US20240047932A1
公开(公告)日：2024-02-08
申请号：US18484017
申请日：2023-10-10
申请人： Ciena Corporation
发明人： Claude Gamache , Antoine Bois , Marie-Josee Picard
CPC分类号： H01S3/137 , G02F1/21 , H01S3/1305 , H01S3/06791 , H01S3/005 , G02F2201/16 , G02F1/212 , G02F1/213
摘要： An apparatus comprises: a gain medium configured to be pumped by a pump source; a photonic integrated circuit (PIC) positioned in a laser cavity that includes the gain medium, the PIC comprising a substrate comprising silicon, a plurality of photonic structures, and one or more ports coupling an optical wave into the PIC, and coupling an optical wave out of the PIC; an optical isolator configured to limit propagation of an optical wave in a single direction through the optical isolator; and an output coupler configured to provide an output that comprises a fraction of the power of an optical wave that is incident upon the output coupler and to redirect remaining power of the optical wave around a closed path of the laser cavity, where the fraction is greater than 0.5.
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公开(公告)号：US11733580B2
公开(公告)日：2023-08-22
申请号：US17243089
申请日：2021-04-28
申请人： E Ink Corporation
发明人： Stephen J. Telfer , Richard J. Paolini, Jr. , Sunil Krishna Sainis , Randal M. Hill , Isaac W. Moran , Lee Yezek , Alain Bouchard , William Vetterling , George G. Harris , Hywel Morgan , Luke Slominski , Jay William Anseth , Jennifer M. Morrison , Craig A. Herb
IPC分类号： G02B26/00 , G03G17/04 , G09G3/34 , G02F1/133 , G02F1/16757 , G02F1/167 , G02F1/1681 , G02F1/1675 , G02F1/1347
CPC分类号： G02F1/16757 , G02F1/167 , G02F1/1347 , G02F1/1681 , G02F2001/1678 , G02F2201/16 , G02F2203/30 , G02F2203/34
摘要： An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.
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公开(公告)号：US20190204641A1
公开(公告)日：2019-07-04
申请号：US15996417
申请日：2018-06-01
发明人： Chunchi CHEN
IPC分类号： G02F1/1347 , G02F1/1335 , G02F1/135
CPC分类号： G02F1/1347 , G02F1/133514 , G02F1/133528 , G02F1/133621 , G02F1/1358 , G02F2001/133622 , G02F2201/16
摘要： Provided is a display panel, which includes a first LCD panel and a second LCD panel. The first LCD panel is disposed in opposite to and atop the second LCD panel. Each sub-pixel of the first LCD panel is correspondingly aligned with each sub-pixel of the second LCD panel. The second LCD panel includes ferroelectric liquid crystals. Also provided is a display device having such display panel. The invention can effectively enhance the transmittance of the backlight and elevate the luminance, thereby reducing power consumption and saving cost.
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公开(公告)号：US20180203326A1
公开(公告)日：2018-07-19
申请号：US15409368
申请日：2017-01-18
发明人： Rüdiger VON ELM , Wolf SEELERT
CPC分类号： G02F1/3501 , G02F1/353 , G02F1/3534 , G02F1/3551 , G02F1/37 , G02F2001/3507 , G02F2001/3509 , G02F2201/16
摘要： Optical apparatus for performing a frequency-conversion operation on laser-radiation includes three elongated optically nonlinear crystals arranged end-to-end on a propagation-axis of the laser-radiation. Each of the crystals is arranged to perform the same frequency-conversion operation. The length of the crystals is made progressively shorter in the propagation-axis direction.
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公开(公告)号：US20180197488A1
公开(公告)日：2018-07-12
申请号：US15740972
申请日：2016-06-24
发明人： TOMOYUKI ISHIHARA , KENTA FUKUOKA
IPC分类号： G09G3/36 , G02F1/1335 , G02F1/1347
CPC分类号： G09G3/36 , G02F1/133528 , G02F1/133536 , G02F1/1347 , G02F1/13471 , G02F2201/16 , G02F2203/01 , G09G3/20 , G09G3/34 , G09G3/3611 , G09G2320/06 , G09G2370/08
摘要： A display device that can display an image and make a background visible even when the image represented by a display gradation value and a transparency gradation value included in an image information signal is not within a displayable range is provided. Even when the image specified by the display gradation value and the transparency gradation value included in the image information signal is not within the displayable range, the display gradation value and the transparency gradation value can be adjusted by prioritizing the transparency gradation value or prioritizing the display gradation value. In this way, the display device can display the image, make the background transparent, and display the image and the background overlapping each other regardless of whether the image specified by the display gradation value and the transparency gradation value is within the displayable range.
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公开(公告)号：US09935426B2
公开(公告)日：2018-04-03
申请号：US14316392
申请日：2014-06-26
发明人： Toshimitsu Kaneko
IPC分类号： G02F1/295 , H01S5/0625 , G02F1/01 , G02F1/025 , H01S5/026 , H01S5/06 , H01S5/065 , H01S5/10 , H01S5/12 , H01S5/343
CPC分类号： H01S5/06256 , G02F1/0147 , G02F1/025 , G02F2201/16 , G02F2201/307 , G02F2203/055 , H01S5/0265 , H01S5/0612 , H01S5/0617 , H01S5/06258 , H01S5/0654 , H01S5/1014 , H01S5/1209 , H01S5/34306
摘要： An optical semiconductor device is provided as one achieving reduction of power in phase control. The optical semiconductor device has: a first optical waveguide having a plurality of segments each of which has a diffraction grating region with a diffraction grating and a space portion coupled to the diffraction grating region, having two ends interposed between the diffraction grating regions, and having a constant optical length, wherein at least one of the segments is provided with a phase shift structure; a first phase control device for adjusting a phase of light in each segment with the phase shift structure; and a second phase control device for adjusting a phase of light in each segment without the phase shift structure.
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公开(公告)号：US09929529B2
公开(公告)日：2018-03-27
申请号：US15672754
申请日：2017-08-09
申请人： GIGAPHOTON INC.
发明人： Takashi Onose , Osamu Wakabayashi
CPC分类号： H01S3/10 , G02F1/37 , G02F2001/354 , G02F2201/16 , H01S3/0078 , H01S3/0092 , H01S3/06754 , H01S3/094003 , H01S3/09415 , H01S3/10015 , H01S3/10069 , H01S3/1608 , H01S3/1618 , H01S3/2251 , H01S3/23 , H01S3/2316 , H01S3/2375 , H01S3/2383 , H01S3/2391 , H01S5/06804 , H01S5/141
摘要： A solid-state laser system may include a first solid-state laser unit, a second solid-state laser unit, a wavelength conversion system, a wavelength detector, and a wavelength controller. The wavelength conversion system may receive a first pulsed laser light beam with a first wavelength and a second pulsed laser light beam with a second wavelength, and output a third pulsed laser light beam with a third wavelength converted from the first and second wavelengths. The wavelength controller may control the first solid-state laser unit to vary the first wavelength on a condition that an absolute value of a difference between a value of a target wavelength and a value of the third wavelength detected by the wavelength detector is equal to or less than a predetermined value, and control the second solid-state laser unit to vary the second wavelength on a condition that the absolute value exceeds the predetermined value.
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公开(公告)号：US09912413B1
公开(公告)日：2018-03-06
申请号：US15249182
申请日：2016-08-26
IPC分类号： H04B10/00 , H04B10/548 , H03C7/00
CPC分类号： H04B10/548 , G02F1/0123 , G02F1/225 , G02F2201/16 , H03C7/00
摘要： An optical phase modulator includes an input source that is configured to receive a light source. There is an output operative to provide a phase modulated output signal based on the received light source. There is a first optical coupler configured to split the light source into a first optical path of a Mach Zehnder Interferometer (MZI) and a second optical path of the MZI. A static phase shifter is configured to provide a static phase shift to the first optical path. There is a phase modulator in the second optical path. There is a second optical coupler configured to combine the first optical path and the second optical path. The first and second optical couplers are tuned such that the phase modulated optical signal at the output provides a substantially constant amplitude that is independent of a change in loss introduced by the phase modulator.
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公开(公告)号：US09904078B2
公开(公告)日：2018-02-27
申请号：US14314798
申请日：2014-06-25
发明人： Chang-young Park , Yong-hwa Park , Sang-hun Lee
CPC分类号： G02F1/017 , G01S7/4814 , G02F2201/16
摘要： An optical modulator and a 3D image acquisition apparatus including an optical modulator are provided. The optical modulator is disposed in a multiple quantum well including a plurality of quantum wells and a plurality of quantum barriers, and includes at least one carrier block disposed in the multiple quantum well restricting the carrier movement between the multiple quantum wells.
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