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公开(公告)号：US20220381644A1
公开(公告)日：2022-12-01
申请号：US17787379
申请日：2020-12-20
发明人： Shmuel STERNKLAR
IPC分类号： G01M11/00
摘要： A system for providing information based on a spectral content of an optical signal, comprises: an optical modulator for applying a time-dependent modulation to the optical signal according to at least one sub-optical modulation frequency, to provide a modulated optical signal. The system also comprises an optoelectronic device configured for receiving the modulated optical signal and responsively generate an electrical sensing signal, and a signal processing system configured for processing the electrical sensing signal and to generate output correlative to at least one wavelength of the optical signal based on the modulation.
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公开(公告)号：US20170115138A1
公开(公告)日：2017-04-27
申请号：US15319001
申请日：2015-06-16
CPC分类号： G01D5/35377 , G01D5/35361 , G01D5/36 , G01M11/3109 , G01M11/319 , H01S3/06754 , H01S3/302
摘要： A method of optical sensing is disclosed. The method comprises coupling an excitation optical signal into a first optical fiber to induce Rayleigh backscattering, thereby providing a backscattered signal; coupling the backscattered signal into a second optical fiber, spatially separated from the first optical fiber; and optically amplifying the backscattered signal in the second optical fiber, thereby generating a sensing signal.
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公开(公告)号：US20210033380A1
公开(公告)日：2021-02-04
申请号：US17046781
申请日：2019-04-18
IPC分类号： G01B9/02
摘要： An interferometer system comprises a sample interferometer arm for guiding a first wave to a sample, and receiving a reflected wave from the sample and a phase amplifier for amplifying a phase shift of the reflected wave, to provide phase-shift-amplified intermediate wave. The interferometer system can also comprise an additional interferometer arm for guiding an additional wave to combine with the intermediate wave, to provide an output wave, and a detector for detecting the output wave.
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公开(公告)号：US20190250015A1
公开(公告)日：2019-08-15
申请号：US16392692
申请日：2019-04-24
CPC分类号： G01D5/35377 , G01D5/35361 , G01D5/36 , G01M11/3109 , G01M11/319 , H01S3/06754 , H01S3/302
摘要： A method of optical sensing is disclosed. The method comprises coupling an excitation optical signal into a first optical fiber to induce Rayleigh backscattering, thereby providing a backscattered signal; coupling the backscattered signal into a second optical fiber, spatially separated from the first optical fiber; and optically amplifying the backscattered signal in the second optical fiber, thereby generating a sensing signal.
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公开(公告)号：US20220057265A1
公开(公告)日：2022-02-24
申请号：US17517743
申请日：2021-11-03
发明人： Shmuel STERNKLAR , Ziv GLASSER
IPC分类号： G01J3/44
摘要： A method of spectroscopy, comprises: transmitting output radiation to a sample; collecting from the sample input radiation being indicative of interaction between the output radiation and the sample; modulating at least one of the output radiation and the input radiation, wherein at least one of the output radiation and the modulation is characterized by a scanned parameter; combining the input radiation, following the modulation, with a reference signal to provide a combined signal; processing the combined signal to construct a vector describing a dependence of a radiation property of the input radiation on the parameter; and at least partially identifying the sample or a change in comprises sample based on at least the vector.
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公开(公告)号：US20210262835A1
公开(公告)日：2021-08-26
申请号：US17256664
申请日：2019-07-04
发明人： Shmuel STERNKLAR , Ziv GLASSER
IPC分类号： G01D5/353
摘要： A method of determining perturbation of a grating formed in an optical fiber, comprises: modulating and transmitting a light beam through the optical fiber, measuring at least one phase shift in a modulation of light reflected off the grating, and determining the perturbation of the grating based on the phase shift(s).
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