-
公开(公告)号：US20240272353A1
公开(公告)日：2024-08-15
申请号：US18638044
申请日：2024-04-17
Applicant: Raytheon Company
Inventor： Richard Lee Kendrick , Joseph Marron
CPC classification number: G02B6/12004 , G02B6/12019 , G02B6/124 , G02B2006/12104 , G02B2006/12121 , G02B2006/12164
Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a laser source implemented on the photonic integrated circuit configured to provide light, a first waveguide structure implemented on the photonic integrated circuit configured to direct a first portion of light from the laser source at a moving object and receive light reflected from the moving object, a second waveguide structure implemented on the photonic integrated circuit configured to combine a second portion of light from the laser source with the light reflected from the moving object to produce a measurement beam, a first multiplexer implemented on the photonic integrated circuit configured to split the measurement beam into a plurality of channels, and a plurality of detectors implemented on the photonic integrated circuit configured to detect an intensity value of each channel to measure a distance between the digital measuring device and the moving object.
-
公开(公告)号：US12050341B2
公开(公告)日：2024-07-30
申请号：US16929907
申请日：2020-07-15
Applicant: RAYTHEON COMPANY
Inventor： Richard Lee Kendrick , Joseph Marron
CPC classification number: G02B6/12004 , G02B6/12019 , G02B6/124 , G02B2006/12104 , G02B2006/12121 , G02B2006/12164
Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a laser source implemented on the photonic integrated circuit configured to provide light, a first waveguide structure implemented on the photonic integrated circuit configured to direct a first portion of light from the laser source at a moving object and receive light reflected from the moving object, a second waveguide structure implemented on the photonic integrated circuit configured to combine a second portion of light from the laser source with the light reflected from the moving object to produce a measurement beam, a first multiplexer implemented on the photonic integrated circuit configured to split the measurement beam into a plurality of channels, and a plurality of detectors implemented on the photonic integrated circuit configured to detect an intensity value of each channel to measure a distance between the digital measuring device and the moving object.
-
公开(公告)号：US20240210618A1
公开(公告)日：2024-06-27
申请号：US18392389
申请日：2023-12-21
Applicant: IMEC VZW
Inventor： Bruno Figeys
CPC classification number: G02B6/12014 , G01J3/0208 , G01J3/021 , G02B6/12021 , G02B2006/12104 , G02B2006/12164
Abstract: An integrated photonics arrayed waveguide multiplexing/demultiplexing device is disclosed. The device includes an array of waveguides having an incident light waveguide section including a phase correcting region, a transmitted light waveguide section, a tunable reflector, wherein each pair of consecutive waveguides in the array includes a coupler. The coupler configured to combine light from the transmitted light waveguide sections, determine therefrom an optical phase difference between the two consecutive waveguides, and wherein the couplers are further configured to determine therefrom a change in optical path length required for each of two consecutive waveguides to reach a predetermined optical phase difference, and wherein each phase correcting region is configured to apply the change to correct the optical path length of the respective waveguide.
-
公开(公告)号：US11984933B2
公开(公告)日：2024-05-14
申请号：US17227179
申请日：2021-04-09
Applicant: Psiquantum, Corp.
Inventor： Hugo Cable
CPC classification number: H04B10/70 , G02B6/12016 , G02F3/00 , G02B2006/12152 , G02B2006/12159 , G02B2006/12164 , G06E1/00
Abstract: Optical circuits support reconfigurable spatial rearrangement (also referred to as “spatial multiplexing”) for a group of photons propagating in waveguides. According to some embodiments, a set of 2×2 muxes can be used to rearrange a pattern of photons on a first set of waveguides into a usable input pattern for a downstream optical circuit.
-
公开(公告)号：US11973535B2
公开(公告)日：2024-04-30
申请号：US17424733
申请日：2020-01-17
Applicant: Nippon Telegraph and Telephone Corporation
Inventor： Osamu Moriwaki , Manabu Oguma , Kenya Suzuki , Takashi Go , Yuichiro Ikuma
IPC: H04B10/079 , G01J3/45 , G02B6/12 , G02B6/125 , H04B10/572 , H04J14/02
CPC classification number: H04B10/07957 , G01J3/45 , H04B10/079 , H04B10/572 , G02B6/12009 , G02B2006/12159 , G02B2006/12164 , G02B6/125 , H04J14/02
Abstract: A wavelength monitoring circuit obtains a light output proportional to only an input optical signal, independent of wavelength, by adding a light split circuit to the configuration in the related art, or changing the light split circuit to a light trifurcation circuit. In addition, wavelength monitoring with high accuracy is possible while improving the resistance to noise. The extraction of the light output proportional to only the input optical signal is performed by a light split circuit for input light at the top stage of the wavelength monitoring circuit or a light split circuit for interference in a stage in the middle of the circuit. The changed light split circuit causes the MZI included in the wavelength monitoring circuit to operate in a state of losing the balance of the configuration or the optical signal level, and increases the signal level near the bottom portion of the transmission characteristics.
-
Patent Agency Ranking
公开(公告)号：US11874497B2
公开(公告)日：2024-01-16
申请号：US17627544
申请日：2019-07-17
Inventor： Lin Yang , Shanglin Yang , Lei Zhang
IPC: G02B6/12
CPC classification number: G02B6/12011 , G02B2006/1204 , G02B2006/12061 , G02B2006/12164
Abstract: A photonic chip and a preparation method thereof are provided. The chip includes a lithium niobate film modulator array, a first optical coupling array, and a silica waveguide wavelength-division multiplexer, and the lithium niobate film modulator array includes one or more lithium niobate film modulators and is used to modulate an optical signal; the first optical coupling array includes one or more first optical coupling structures, and the first optical coupling structure has one end connected to a corresponding lithium niobate thin film modulator and the other end connected to the silica waveguide wavelength-division multiplexer so as to transmit the modulated optical signal to the silica waveguide wavelength-division multiplexer; and the silica waveguide wavelength-division multiplexer is used to perform wavelength-division multiplexing on the modulated optical signal.
-
7.发明公开公开(公告)号：US20230288636A1
公开(公告)日：2023-09-14
申请号：US17980607
申请日：2022-11-04
Applicant: Southwest Jiaotong University
Inventor： Xihua ZOU , Changjian XIE , Xiaojun XIE , Wei PAN , Lianshan YAN
IPC: G02B6/12
CPC classification number: G02B6/12011 , G02B2006/12164
Abstract: A super-compact arrayed waveguide grating (AWG) wavelength division multiplexer based on a sub-wavelength grating is provided and includes an input waveguide, a first planar waveguide, an arrayed waveguide, a second planar waveguide, and the output waveguide that are sequentially connected. The input waveguide has 1 port, and the output waveguide has 8 ports. The arrayed waveguide includes 50 equivalent uniform strip waveguides with the same length difference, and each of the equivalent uniform strip waveguides is configured as a sub-wavelength grating structure, thereby forming the effect of increasing group refractive index or transmission delay based on a slow light effect. The 8 channels with a channel spacing of 200 GHz have the minimum adjacent channel crosstalk of less than -27 dB, and the overall size is within 300×230 µm2. In the multiplexer, the overall integration size of the device is reduced by an order of magnitude.
-
公开(公告)号：US20230194779A1
公开(公告)日：2023-06-22
申请号：US18062269
申请日：2022-12-06
Applicant: Alibaba (China) Co., Ltd.
Inventor： Sai CHEN , Chongjin XIE , Huan ZHANG , Liang DOU , Rui LU
CPC classification number: G02B6/12007 , H04B10/614 , G02B2006/12164
Abstract: An optical transmission system is provided. The optical transmission system includes a first board card including a multiplexer/demultiplexer, and an optical amplifier. The multiplexer/demultiplexer is configured to receive a plurality of first split optical signals and combine the received plurality of first split optical signals into a first combined optical signal, and the optical amplifier is configured to amplify power of the first combined optical signal.
-
公开(公告)号：US20190222309A1
公开(公告)日：2019-07-18
申请号：US16324511
申请日：2017-08-09
Applicant: MACQUARIE UNIVERSITY
Inventor： Simon GROSS , Michael WITHFORD
IPC: H04B10/07 , H04B10/073
CPC classification number: H04B10/0705 , G02B6/0288 , G02B6/125 , G02B6/14 , G02B6/2821 , G02B2006/1209 , G02B2006/12152 , G02B2006/12164 , H04B10/073 , H04B10/077 , H04B10/85
Abstract: A system for detecting the installation of an optical tap on an optical fiber link. The system comprises a spatial mode de-multiplexer optically coupled to the optical fiber link. The spatial mode de-multiplexer is configured to isolate an optical signal in a first spatial mode of the optical fiber link. The spatial mode de-multiplexer is configured to isolate light in a second spatial mode of the optical fiber link 14. The system comprises an optical sensor optically coupled to the spatial mode de-multiplexer for measuring the optical power of the light in the second spatial mode of the optical fiber link. Also disclosed herein are methods for detecting installation of an optical tap and methods for securing an optical signal in an optical fiber.
-
公开(公告)号：US20190196205A1
公开(公告)日：2019-06-27
申请号：US16231326
申请日：2018-12-21
Applicant: NORTH INC.
Inventor： Jörg Pierer , Rony Jose James , Stefan Mohrdiek , Martin Joseph Kiik , Syed Moez Haque , Douglas Raymond Dykaar
CPC classification number: G02B27/0176 , G02B6/12004 , G02B6/124 , G02B27/0172 , G02B2006/12107 , G02B2006/12164 , G02B2027/0116 , G02B2027/015 , G02B2027/0178 , H01S5/02272 , H01S5/02288 , H01S5/02292 , H01S5/4093
Abstract: Systems, devices, and methods of manufacturing optical engines and laser projectors that are well-suited for use in wearable heads-up displays (WHUDs) are described. Generally, the optical engines of the present disclosure integrate a plurality of laser diodes (e.g., 3 laser diodes, 4 laser diodes) within a single, hermetically or partially hermetically sealed, encapsulated package. A grating waveguide combiner comprising a plurality of waveguides having grating couplers thereon may be used to combine beams of light emitted by the plurality of laser diodes into a coaxially superimposed aggregate beam. Such optical engines may have advantages over existing designs including, for example, smaller volumes, better manufacturability, faster modulation speed, etc. WHUDs that employ such optical engines and laser projectors are also described.
-
-
-
-
-
-
-
-
-
Search Results
575
records
(took 0.036 seconds)
