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公开(公告)号：US20240272283A1
公开(公告)日：2024-08-15
申请号：US18631963
申请日：2024-04-10
发明人： Matthew Wade Puckett , Steven Tin , Chad Fertig
CPC分类号： G01S7/4818 , G01N21/47 , G02B6/12007 , G02B6/4201 , G02F1/225 , G02F2203/055
摘要： Embodiments relating to an integrated photonics air data system are disclosed. A light beam from a laser source is routed to a plurality of tunable optical filters operative to transmit the light beam to one of a plurality of emitting grating couplers at any given time. The tunable optical filters are configured such that the light beam is emitted into the region of interest at different times from each of the emitting grating couplers. A passive optical filter array is configured to receive scattered light from the emitted light beam. The passive optical filter array comprises a plurality of optical notch filters operative for frequency selection, and a plurality of optical detectors each respectively coupled to an output of one of the optical notch filters. The passive optical filter array is operative to perform frequency spectrum decomposition of the received scattered light into a plurality of signals.
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公开(公告)号：US11815718B2
公开(公告)日：2023-11-14
申请号：US17531441
申请日：2021-11-19
发明人： Matthew Wade Puckett , Chad Fertig , Steven Tin
CPC分类号： G02B6/124 , G02B6/12002 , G02B6/14 , G02B6/34
摘要： Techniques relating to an improved optical waveguide are described. The optical waveguide includes an upper and lower waveguide that each comprise a first and second layer, in which photons are transferred from the lower waveguide to the upper waveguide. A structured subwavelength coupling region is included, for example, in the first upper waveguide layer. The fill factor of the subwavelength grating coupling region is increased in the direction of light propagation to increase the index of refraction of the structured subwavelength coupling region and therefore improve photon transfer from the lower waveguide. Additionally, the width of the optical waveguide (at least along the structured subwavelength coupling region) remains constant as the fill factor increases.
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公开(公告)号：US11150264B2
公开(公告)日：2021-10-19
申请号：US16539984
申请日：2019-08-13
发明人： Neil Krueger , Joshua Dorr , Steven Tin , Chad Fertig , Arthur Savchenko
IPC分类号： G01P15/097 , B81B3/00
摘要： An optomechanical device comprising an assembly, one or more laser devices configured to generate a first optical signal and a second optical signal, and circuitry. The circuitry is configured to modulate the second optical signal and output the first optical signal and the second optical signal to the assembly. A first element of a first beam structure shifts the first spatial frequency of the assembly by approximately 180 degrees and a second element of a second beam structure shifts the second spatial frequency of the assembly by approximately 180 degrees such that a first optical resonance is generated, which is probed by the first optical signal interacting with the assembly, and a second optical resonance is generated, which is probed by the second optical signal interacting with the assembly, where the first optical resonance and the second optical resonance are spectrally separated by a minimum threshold.
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公开(公告)号：US20210247515A1
公开(公告)日：2021-08-12
申请号：US16784111
申请日：2020-02-06
发明人： Steven Tin , Matthew Wade Puckett , Chad Fertig
IPC分类号： G01S17/58 , G01S7/4915
摘要： Systems and methods for a silicon photonics integrated optical velocimeter are provided herein. In some embodiments, a method includes producing a laser output at a laser source; emitting the laser output from a plurality of emitters formed in an optical chip; receiving a plurality of reflected portions of the emitted laser output at an optical collector formed in the optical chip, wherein the plurality of reflected portions are reflected off of at least one surface; beating the laser output against the reflected portions of the emitted laser output, wherein one of the laser output or the reflected portions of the emitted laser output are modulated by at least one modulation frequency; and calculating a doppler shift for each of the plurality of reflected portions of the emitted laser output based on an output of the beating and the at least one modulation frequency.
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公开(公告)号：US20210116639A1
公开(公告)日：2021-04-22
申请号：US16803841
申请日：2020-02-27
发明人： Chad Fertig , Matthew Wade Puckett , Steven Tin
摘要： Systems and methods for an integrated photon source and detector of entangled photons are provided. In certain embodiments, a system includes a first waveguide layer comprising a photon producing waveguide configured to provide two photons propagating in orthogonal modes of a single waveguide. The system also includes a second waveguide layer comprising a photon conditioning waveguide network, the second waveguide layer formed on the first waveguide layer, the second waveguide layer having a different index of refraction. Further, the system includes a photon vertical coupling waveguide, coupling the photons into the photon conditioning waveguide network, wherein the photon conditioning waveguide network converts the photons to propagate in two different waveguides in the same mode, wherein the photon conditioning waveguide network provides the photons as an output to an external device, wherein the photon conditioning waveguide network receives the photons from the external device and provides the photons to an interferometer.
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公开(公告)号：US20210080549A1
公开(公告)日：2021-03-18
申请号：US16569581
申请日：2019-09-12
发明人： Steven Tin , Chad Fertig , Matthew Wade Puckett , Neil A. Krueger , Jianfeng Wu
摘要： A sensor system comprises a pulsed light source, and a passive sensor head chip in communication with the light source. The sensor head chip includes a first photonics substrate, a transmitting optical component on the first photonics substrate and configured to couple a pulse, transmitted through a first optical fiber from the light source, into a region of interest; and a receiving optical component on the first photonics substrate and configured to couple backscattered light, received from the region of interest, into a second optical fiber. A signal processing chip communicates with the sensor head chip and light source. The signal processing chip includes a second photonics substrate and comprises a passive optical filter array that receives the backscattered light from the second optical fiber. The filter array includes notch filters in communication with each other and operative for frequency selection; and optical detectors respectively coupled to the notch filters.
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公开(公告)号：US20210018531A1
公开(公告)日：2021-01-21
申请号：US16514905
申请日：2019-07-17
发明人： Neil Krueger , Matthew Puckett , Chad Fertig , Arthur Savchenko , Steven Tin , Joshua Dorr
IPC分类号： G01P15/093 , G01H9/00 , G01P15/08
摘要： This disclosure is related to devices, systems, and techniques for inducing mechanical vibration in one or more mechanical structures. For example, a system includes a mechanical structure extending along a longitudinal axis. The mechanical structure includes a set of mechanical beams, where the set of mechanical beams are configured to guide a modulated optical signal, and where the set of mechanical beams includes a first mechanical beam and a second mechanical beam separated by a gap. The first mechanical beam includes at least one of a first corrugated inner edge parallel to the longitudinal axis and a first corrugated outer edge parallel to the longitudinal axis. The second mechanical beam includes at least one of a second corrugated inner edge parallel to the longitudinal axis and a second corrugated outer edge parallel to the longitudinal axis.
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公开(公告)号：US10788340B1
公开(公告)日：2020-09-29
申请号：US16569555
申请日：2019-09-12
发明人： Steven Tin , Chad Fertig , Matthew Wade Puckett
摘要： A system for light detection and ranging (LiDAR) based sensing including air data detection is disclosed. The system comprises a photonics substrate comprising a passive optical filter array configured to receive backscattered light produced in a region of interest when a light beam is emitted by a laser device, and a reference beam from the laser device. The passive optical filter array includes a plurality of optical notch filters in optical communication with each other, the optical notch filters operative for frequency selection, and a plurality of optical detectors each respectively coupled to an output of one of the optical notch filters. The passive optical filter array is operative to perform frequency spectrum decomposition of the received backscattered light into a plurality of signals for data extraction and processing to determine air data parameters.
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公开(公告)号：US10761176B1
公开(公告)日：2020-09-01
申请号：US16162276
申请日：2018-10-16
发明人： Steven Tin
IPC分类号： G01S1/72
摘要： A differential signature detection system is provided. The system comprises: a target sensor, wherein the target sensor is configured to measure acoustical signals within a first narrow band around a target frequency; an offset sensor, wherein the offset sensor is configured to measure acoustical signals within a second narrow band around an offset frequency; and a controller coupled to the target sensor and the offset sensor, wherein the controller is configured to: compare a signal output of the target sensor with an output of the signal output of the offset sensor to calculate a differential measurement that comprises a difference in signal peak intensity; compare the differential measurement to a reference signal, wherein the reference signal comprises a threshold indicative of a presence of a characteristic signature peak associated with a target object; and produce an output based on the comparison between the differential measurement and the reference signal.
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公开(公告)号：US10424441B2
公开(公告)日：2019-09-24
申请号：US15803155
申请日：2017-11-03
发明人： Steven Tin , Neil Krueger
摘要： An ultra-high charge density electret is disclosed. The ultra-high charge density electret includes a three-dimensional structure having a plurality of sidewalls. A porous silicon dioxide film is formed on the plurality of sidewalls, and the porous silicon dioxide film is charged with a plurality of positive or negative ions.
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