公开(公告)号：US20250147160A1

公开(公告)日：2025-05-08

申请号：US18724578

申请日：2022-01-11

Applicant: University of Science and Technology of China

Inventor： Chong Wang ,  Kexin Yang ,  Bin Yang ,  Wei Qiang ,  Xianghui Xue ,  Ruocan Zhao

IPC: G01S7/487 ,  G01S7/481 ,  G01S7/484

Abstract: Disclosed in the present application is a method for fitting spontaneous emission noise of a lidar system or an optical fiber sensing system. The method includes: providing a trigger collection signal by a signal source; triggering, based on the trigger collection signal, a co-located transceiver module and a distributed transceiver module to perform synchronous detection on a detection target; receiving co-located data and distributed data returned by the detection target; subtracting local noise from the co-located data and the distributed data, respectively; selecting a linear interval to normalize the co-located data; performing subtraction operation on the normalized co-located data and the distributed data to obtain spontaneous emission noise; and fitting the spontaneous emission noise by a function.

公开(公告)号：US12224548B2

公开(公告)日：2025-02-11

申请号：US18716704

申请日：2023-04-21

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Chong Wang ,  Haocheng Yang ,  Xianghui Xue ,  Yudie Li ,  Tingdi Chen

IPC: H01S3/108 ,  H01S3/00 ,  H01S3/115 ,  H01S3/30

Abstract: A single-photon Raman optical frequency comb source is provided, including: a light source assembly, a filtering mechanism, at least three electro-optical modulators, a wavelength division multiplexer and a single photon generating mechanism. The light source assembly is configured to generate a Raman scattering light. The filtering mechanism is configured to pass a light having a specific wavelength, to filter the Raman scattering light and obtain at least three Raman scattering spectral lines. Each electro-optical modulator is configured to modulate a frequency of one of the Raman scattering spectrum lines in one-to-one correspondence, so as to cause a frequency shift of the Raman scattering spectrum line. The wavelength division multiplexer is configured to multiplex all modulated Raman scattering spectral lines and output a Raman optical frequency comb. The single photon generating mechanism is configured to adjust the Raman optical frequency comb to obtain a single-photon Raman optical frequency comb.