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公开(公告)号：US20150200704A1
公开(公告)日：2015-07-16
申请号：US14593253
申请日：2015-01-09
Applicant: RAYTHEON COMPANY
Inventor： Gary M. Graceffo
CPC classification number: H04L27/04 , H04B1/713 , H04B7/06 , H04L1/0612
Abstract: A method and apparatus for data modulation in an antenna array include: storing input data comprising of a plurality of data bits, in a buffer; generating a pseudo random number; computing a transmission mode from the pseudo random number; based on the computed transmission mode and the number of antenna elements in the antenna array, computing a particular phase offset for each antenna element; sequentially providing the stored input data, one bit at a time, to each antenna element; and transmitting the input data from each antenna element according to the computed particular phase offset for said each antenna element.
Abstract translation: 一种用于天线阵列中的数据调制的方法和装置包括：将包括多个数据位的输入数据存储在缓冲器中; 产生伪随机数; 从伪随机数计算传输模式; 基于所计算的传输模式和天线阵列中的天线元件的数量，计算每个天线元件的特定相位偏移; 向每个天线元件顺序地提供所存储的输入数据，一次一个位; 以及根据所计算的所述每个天线元件的特定相位偏移从每个天线元件传输输入数据。
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公开(公告)号：US12189221B2
公开(公告)日：2025-01-07
申请号：US18211004
申请日：2023-06-16
Applicant: RAYTHEON COMPANY
Inventor： Gary M. Graceffo , Andrew Kowalevicz , Benjamin P. Dolgin
IPC: G02F1/03
Abstract: Aspects and examples are directed to programmable optical finite impulse response filters and optical infinite impulse response filters, which may be implemented as photonic integrated circuits.
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公开(公告)号：US20220182147A1
公开(公告)日：2022-06-09
申请号：US17112703
申请日：2020-12-04
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Gary M. Graceffo , Benjamin P. Dolgin
IPC: H04B10/40 , H04B10/532
Abstract: Monostatic optical transceivers, systems, and methods of operating the same include a single aperture, a transmitter that provides a modulated and polarized optical transmit beam, a receiver that receives a modulated and polarized optical receive beam at an optical resonator included therein and processes the received optical receive beam to determine information from the received optical receive beam, a polarizing beam splitter that reflects the optical transmit beam, a polarization rotator that rotates the polarization of the reflected optical transmit beam by a fixed number of degrees in a transmit direction in a coordinate system of the monostatic transceiver, and a waveplate that modifies the polarization of the rotated optical transmit beam.
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公开(公告)号：US11309964B1
公开(公告)日：2022-04-19
申请号：US17123795
申请日：2020-12-16
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Gary M. Graceffo , Benjamin P. Dolgin
IPC: H04B10/2507 , H04B10/079 , H04B10/40 , G02B6/42
Abstract: Free space optical systems and methods of controlling the same for reducing signal fading of encoded optical beams transmitted in a communication channel are provided. Adjacent pairs of a plurality of apertures are separated by a distance being at least greater than the coherence width of the propagation medium of the communication channel. Due to averaging of the beams, variation in power at an optical receiver is reduced. By using an optical resonator in the optical receiver, the beams are converted into an intensity modulation on a non-interfering basis, thereby permitting recovery and decoding of the signal.
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公开(公告)号：US11307395B2
公开(公告)日：2022-04-19
申请号：US16881962
申请日：2020-05-22
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Benjamin P. Dolgin , Gary M. Graceffo , Paul Searcy , Rizwan Parvez
Abstract: Method and apparatus to maintain a resonant condition of an optical cavity such that the optical path length through the optical cavity is independent or minimally dependent on the angle of incidence of a received optical signal are disclosed. A material within the optical cavity has an index of refraction that varies as a function of an angle of propagation of light within the material, thereby achieving the independence of the optical path length and the angle of incidence. The resonant condition is maintained over a range of angles of incidence of the received optical signal.
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Patent Agency Ranking
96.发明授权公开(公告)号：US11290191B2
公开(公告)日：2022-03-29
申请号：US16853107
申请日：2020-04-20
Applicant: RAYTHEON COMPANY
Inventor： Gary M. Graceffo , Andrew Kowalevicz , Benjamin P. Dolgin
IPC: H04B10/06 , H04B10/61 , H04B10/556 , H01S3/10 , H01S3/13
Abstract: An optical receiver including an optical resonator and a steering mechanism coupled to the at least one optical resonator is disclosed. The optical resonator is configured to receive a phase modulated input optical signal and to produce an intensity modulated output optical signal. An intensity modulation of the output optical signal is representative of the phase modulation of the input optical signal. The optical receiver further comprises an optical-electrical converter that detects the intensity modulated output optical signal and converts the intensity modulated output optical signal to an electrical signal, and signal processor that receives the electrical signal, performs symmetric phase change measurements based on the electrical signal, and provides a control signal to actuate the steering mechanism to steer the optical resonator to maintain normal incidence of the phase modulated input optical signal on a surface of at least one optical resonator.
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公开(公告)号：US20220014276A1
公开(公告)日：2022-01-13
申请号：US17371635
申请日：2021-07-09
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Benjamin P. Dolgin , Gary M. Graceffo , James Talamonti
Abstract: An optical signal receiver includes a multimode waveguide for receiving a complex modulated optical signal, an optical resonator that receives the complex modulated optical signal from the multimode waveguide and converts the complex modulated optical signal to an intensity modulated signal, and a detector that is configured to convert the intensity modulated signal into an electrical signal, the electrical signal having an amplitude indicative of an intensity of the intensity modulated signal from the optical resonator, and that provides a detected signal.
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公开(公告)号：US20200295839A1
公开(公告)日：2020-09-17
申请号：US16778916
申请日：2020-01-31
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Benjamin P. Dolgin , Gary M. Graceffo
IPC: H04B10/556 , H04B10/516 , H04L27/20
Abstract: Optical transmitters configured to modulate optical signals with a path-dependent phase modulation scheme. In certain examples, an optical transmitter includes an optical source that emits a carrier waveform, a modulator configured to modulate the carrier waveform according to a path-dependent phase modulation scheme to produce a modulated optical signal, a mapping module configured to map a data payload to the path-dependent phase modulation scheme, each symbol in the path-dependent phase modulation scheme including a concatenation of at least one location bit and a path bit, the at least one location bit identifying an amount of a phase transition in the modulated optical signal and the path bit identifying a direction of the phase transition, and a pulse-shaping filter configured to control the modulator, based on an output from the mapping module, to impose the path-dependent phase modulation scheme on the carrier waveform to generate the modulated optical signal.
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公开(公告)号：US10686533B2
公开(公告)日：2020-06-16
申请号：US16367567
申请日：2019-03-28
Applicant: RAYTHEON COMPANY
Inventor： Benjamin P. Dolgin , Gary M. Graceffo , Andrew Kowalevicz
Abstract: Optical receivers and methods for balanced signal detection using an optical resonator. In one example, an optical receiver includes an optical resonator that receives an optical signal, accumulates resonant optical signal energy, and emits first output optical signal energy from a first output and second output optical signal energy from the second output. In response to a modulation of the optical signal, the optical resonator is configured to disrupt the first and second output optical signal energies to convert the modulation of the optical signal into an intensity modulation of the first and second output optical signal energies. The optical receiver includes a first detector that receives the first output optical signal energy and detects the intensity modulation of the first output optical signal energy, and a second detector that receives the second output optical signal energy and detects the intensity modulation of the second output optical signal energy.
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公开(公告)号：US20190319715A1
公开(公告)日：2019-10-17
申请号：US16380269
申请日：2019-04-10
Applicant: RAYTHEON COMPANY
Inventor： Andrew Kowalevicz , Gary M. Graceffo , Benjamin P. Dolgin
IPC: H04B10/67
Abstract: Photo-resonator optical detectors and optical receiver systems incorporating same, In one example, an optically resonant detector includes a housing having an optical window, a photodetector disposed within the housing, and an optical resonator disposed in optical alignment with the photodetector within the housing and positioned between the optical window and the photodetector, the optical resonator being configured to receive an input optical signal via the optical window and to provide an output optical signal to the photodetector.
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