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公开(公告)号：US11768113B2
公开(公告)日：2023-09-26
申请号：US17436789
申请日：2020-04-30
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Zhongmin Yang , Xiaoxiao Wen , Wei Lin , Xiaoming Wei
CPC classification number: G01J11/00 , G02B27/14 , G02F1/353 , G02F1/3503
Abstract: The present application relates to a light pulse signal processing system. A to-be-measured signal light source generates a to-be-measured signal light pulse, and the to-be-measured signal light pulse is transmitted to a cylindrical lens. The to-be-measured signal light pulse is converted into a to-be-measured signal light pulse having a spatial angle chirp by the cylindrical lens, and is outputted and is incident into a pair of long mirrors at different angles. The to-be-measured signal light pulse incident at different incident angles is delayed by the pair of long mirrors. A cluster of to-be-measured signal light pulses with a corresponding repetition rate is outputted to a beam combining mirror, and is combined with a cluster of reference light pulses by the beam combining mirror. A light signal analysis device analyzes the combined cluster of light pulses.
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公开(公告)号：US12181841B2
公开(公告)日：2024-12-31
申请号：US17946051
申请日：2022-09-16
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Zhongmin Yang , Yuankai Guo , Xiaoming Wei
Abstract: The present application relates to a real-time measurement method and system for ultrafast space-time-frequency three-domain information based on space-time-frequency compression. The method includes: generating an ultrafast-pulse optical signal in a to-be-observed physical system; performing intensity-modulated spatial encoding on the ultrafast-pulse optical signal; arranging, by a space-time editor, a time-domain series of an encoded ultrafast-pulse optical signal in a horizontal space direction; performing, by a frequency-space editor, frequency spectral processing on a space-time distribution encoding form of the encoded ultrafast-pulse optical signal; performing, by a frequency-time delayer, frequency-time delaying on an encoded space-time-frequency synchronized ultrafast-pulse optical signal; performing, by an area array detector, real-time compression and acquisition on a high-frequency-resolution encoded space-time-frequency synchronized ultrafast-pulse optical signal, to obtain compressed encoded data information; and decompressing and decoding data according to the compressed encoded data information, to obtain space-time-frequency three-domain synchronization information of the ultrafast-pulse optical signal.
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公开(公告)号：US12095501B2
公开(公告)日：2024-09-17
申请号：US17946054
申请日：2022-09-16
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Zhongmin Yang , Xiaoxiao Wen , Yueyi Sun , Xiaoming Wei
IPC: H04B10/079
CPC classification number: H04B10/079
Abstract: The present invention discloses an intelligent real-time full-field measurement method and system for a high-repetition-rate femtosecond pulse. The method includes: splitting a to-be-tested signal into n channels; performing a frequency reduction separation on each of the channels; splitting each channel of frequency-reduced time-domain demultiplexed signals into two signals, where a small dispersion component performs time-domain stretching on one signal, and a big dispersion component performs a time-frequency conversion on the other signal; acquiring time-domain intensity information of the to-be-tested signal after the stretching by the small dispersion component and frequency-domain envelope information of the to-be-tested signal after the time-frequency conversion by the big dispersion component; and continuously iterating the acquired time-domain intensity information and frequency-domain envelope information according to a Gerchberg-Saxton algorithm until a convergence is achieved, to obtain information about intensity and phase of the to-be-tested signal in a time domain and a frequency domain.
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